{"id":120194,"date":"2026-10-31T06:57:15","date_gmt":"2026-10-30T22:57:15","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/120194.html"},"modified":"2026-10-31T06:57:15","modified_gmt":"2026-10-30T22:57:15","slug":"%e3%80%90stm32%e3%80%91-%e5%86%85%e9%83%a8-flash-%e8%af%a6%e8%a7%a3%ef%bc%9a%e5%af%84%e5%ad%98%e5%99%a8%e9%80%90%e4%bd%8d%e6%8b%86%e8%a7%a3-%e5%b7%a5%e4%bd%9c%e6%b5%81%e7%a8%8b%e9%a1%ba%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/120194.html","title":{"rendered":"\u3010STM32\u3011 \u5185\u90e8 Flash \u8be6\u89e3\uff1a\u5bc4\u5b58\u5668\u9010\u4f4d\u62c6\u89e3 + \u5de5\u4f5c\u6d41\u7a0b\u987a\u5e8f\u5168\u8bb2 + EEPROM\u518d\u5b9e\u73b0"},"content":{"rendered":"

\"\"<\/p>\n

\n

\u00a0 \u5185\u90e8 Flash \u8be6\u89e3：\u5bc4\u5b58\u5668\u9010\u4f4d\u62c6\u89e3 + \u5de5\u4f5c\u6d41\u7a0b\u987a\u5e8f\u5168\u8bb2\u00a0\u00a0<\/span><\/span><\/h2>\n

\u4e00\u3001\u57fa\u7840\u6982\u5ff5（\u56de\u987e）<\/span><\/h3>\n

1.1 \u4ec0\u4e48\u662f\u5185\u90e8 Flash<\/span><\/h4>\n

Flash（\u95ea\u5b58） \u662f STM32 \u82af\u7247\u5185\u90e8\u7684\u975e\u6613\u5931\u6027\u5b58\u50a8\u5668：<\/span><\/p>\n

    \n
  • \u6389\u7535\u4e0d\u4e22\u5931：\u65ad\u7535\u540e\u6570\u636e\u4f9d\u7136\u4fdd\u7559；<\/span><\/li>\n
  • \u7247\u5185\u96c6\u6210：\u540c\u4e00\u9897\u82af\u7247\u5185，\u603b\u7ebf\u76f4\u63a5\u8bbf\u95ee；<\/span><\/li>\n
  • \u53ef\u64e6\u5199：\u53ef\u53cd\u590d\u64e6\u9664\u548c\u7f16\u7a0b（\u5bff\u547d\u7ea6 1 \u4e07\u6b21）\u3002<\/span><\/li>\n<\/ul>\n

    1.2 Flash vs SRAM vs EEPROM<\/span><\/h4>\n\n\u5bf9\u6bd4\u9879<\/span>\u5185\u90e8 Flash<\/span>SRAM<\/span>EEPROM（\u5916\u90e8）<\/span><\/tr>\n\n\n\n\n\n\n
    \u6613\u5931\u6027<\/span><\/td>\n\u975e\u6613\u5931<\/span><\/td>\n\u6613\u5931<\/span><\/td>\n\u975e\u6613\u5931<\/span><\/td>\n<\/tr>\n
    \u8bbf\u95ee\u901f\u5ea6<\/span><\/td>\n\u5feb（\u53ef\u53d6\u6307\u6267\u884c）<\/span><\/td>\n\u6700\u5feb<\/span><\/td>\n\u6162（I2C\/SPI）<\/span><\/td>\n<\/tr>\n
    \u64e6\u5199\u5355\u4f4d<\/span><\/td>\n\u9875\/\u6247\u533a\u64e6\u9664<\/span><\/td>\n\u65e0\u9700\u64e6\u9664<\/span><\/td>\n\u6309\u5b57\u8282<\/span><\/td>\n<\/tr>\n
    \u64e6\u5199\u5bff\u547d<\/span><\/td>\n~10,000 \u6b21<\/span><\/td>\n\u65e0\u9650<\/span><\/td>\n~1,000,000 \u6b21<\/span><\/td>\n<\/tr>\n
    \u4e3b\u8981\u7528\u9014<\/span><\/td>\n\u5b58\u4ee3\u7801\u3001\u5e38\u91cf\u3001\u6570\u636e<\/span><\/td>\n\u53d8\u91cf\u3001\u6808\u3001\u5806<\/span><\/td>\n\u5c0f\u91cf\u6389\u7535\u6570\u636e<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    1.3 \u5185\u90e8 Flash \u80fd\u5e72\u4ec0\u4e48<\/span><\/h4>\n
  • \u5b58\u4ee3\u7801（\u4e0a\u7535\u4ece 0x08000000 \u53d6\u6307\u6267\u884c）；<\/span><\/li>\n
  • \u5b58\u5e38\u91cf（const \u6570\u7ec4\u3001\u5b57\u7b26\u4e32）；<\/span><\/li>\n
  • \u6389\u7535\u4fdd\u5b58\u6570\u636e（\u6a21\u62df EEPROM）；<\/span><\/li>\n
  • OTA \u5347\u7ea7（Bootloader \u5199\u65b0\u56fa\u4ef6）；<\/span><\/li>\n
  • \u914d\u7f6e\u82af\u7247\u884c\u4e3a（\u9009\u9879\u5b57\u8282）\u3002<\/span><\/li>\n
    \n

    \u4e8c\u3001Flash \u5185\u90e8\u7ed3\u6784<\/span><\/h3>\n

    2.1 \u6574\u4f53\u5e03\u5c40（F103 \u4e3a\u4f8b）<\/span><\/h4>\n

    STM32F103 \u5185\u90e8 Flash \u603b\u89c8
    \n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510
    \n\u2502 \u4e3b\u5b58\u50a8\u5757（Main Memory） \u2502
    \n\u2502 0x0800_0000 \u2500\u2500\u25ba \u98750 (1KB) \u2502
    \n\u2502 0x0800_0400 \u2500\u2500\u25ba \u98751 (1KB) \u2502
    \n\u2502 … \u2502
    \n\u2502 0x0801_FC00 \u2500\u2500\u25ba \u9875127 (1KB) \u2502
    \n\u2502 \u5171 128 \u9875 \u00d7 1KB = 128KB \u2502
    \n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524
    \n\u2502 \u7cfb\u7edf\u5b58\u50a8\u5668（System Memory） 2KB Bootloader \u2502
    \n\u2502 0x1FFF_F000 ~ 0x1FFF_F7FF \u2502
    \n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524
    \n\u2502 \u9009\u9879\u5b57\u8282（Option Bytes） 16B \u2502
    \n\u2502 0x1FFF_F800 ~ 0x1FFF_F80F \u2502
    \n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524
    \n\u2502 OTP \u533a\u57df（\u4e00\u6b21\u6027\u53ef\u7f16\u7a0b） \u2502
    \n\u2502 0x1FFF_7800 ~ 0x1FFF_7A0F \u2502
    \n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n

    2.2 F1 \u9875\u5f0f vs F4 \u6247\u533a\u5f0f<\/span><\/h4>\n\n\u7cfb\u5217<\/span>\u7ed3\u6784<\/span>\u64e6\u9664\u5355\u4f4d<\/span>\u7f16\u7a0b\u5355\u4f4d<\/span>\u5178\u578b\u5bb9\u91cf<\/span><\/tr>\n\n\n\n
    F1（F103）<\/span><\/td>\n\u9875\u5f0f<\/span><\/td>\n1KB\/\u9875<\/span><\/td>\n\u534a\u5b57（16bit）<\/span><\/td>\n64KB~512KB<\/span><\/td>\n<\/tr>\n
    F4（F407）<\/span><\/td>\n\u6247\u533a\u5f0f<\/span><\/td>\n32KB\/128KB\/256KB<\/span><\/td>\n\u5b57（32bit）\/\u53cc\u5b57<\/span><\/td>\n512KB~2MB<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    F4 \u6247\u533a：<\/span><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Sector03 \u5404 32KB\u3001Sector4 128KB\u3001Sector511 \u5404 256KB（1MB \u5bb9\u91cf\u65f6\u7528\u524d 12 \u4e2a\u6247\u533a）\u3002<\/span><\/p>\n

    \n

    \u4e09\u3001\u5bc4\u5b58\u5668\u8be6\u89e3（\u9010\u4f4d\u62c6\u89e3）<\/span><\/h3>\n

    STM32F1 \u7684 Flash \u63a5\u53e3\u4e00\u5171 8 \u4e2a\u5bc4\u5b58\u5668\u3002\u672c\u7ae0\u662f\u91cd\u70b9，\u9010\u4e2a\u5c55\u5f00\u3002<\/span><\/p>\n

    3.1 FLASH_ACR \u2014 \u8bbf\u95ee\u63a7\u5236\u5bc4\u5b58\u5668（\u5730\u5740 0x4002_2000 + 0x00）<\/span><\/h4>\n

    \u4f5c\u7528：\u914d\u7f6e Flash \u8bfb\u53d6\u65f6\u5e8f（\u7b49\u5f85\u72b6\u6001\u3001\u9884\u53d6\u7f13\u51b2）\u3002<\/span><\/p>\n\n\u4f4d<\/span>\u540d\u79f0<\/span>\u7c7b\u578b<\/span>\u590d\u4f4d\u503c<\/span>\u4f5c\u7528<\/span><\/tr>\n\n\n\n\n\n\n
    bit[2:0]<\/span><\/td>\nLATENCY<\/span><\/td>\nRW<\/span><\/td>\n000<\/span><\/td>\n\u7b49\u5f85\u72b6\u6001（\u89c1\u4e0b\u8868）<\/span><\/td>\n<\/tr>\n
    bit3<\/span><\/td>\nPRFTBE<\/span><\/td>\nRW<\/span><\/td>\n0<\/span><\/td>\n\u9884\u53d6\u7f13\u51b2\u4f7f\u80fd：1=\u5f00\u542f，0=\u5173\u95ed<\/span><\/td>\n<\/tr>\n
    bit4<\/span><\/td>\nPRFTBS<\/span><\/td>\nR<\/span><\/td>\n0<\/span><\/td>\n\u9884\u53d6\u7f13\u51b2\u72b6\u6001：1=\u7f13\u51b2\u5df2\u6ee1<\/span><\/td>\n<\/tr>\n
    bit5<\/span><\/td>\nHLFCLK<\/span><\/td>\nRW<\/span><\/td>\n0<\/span><\/td>\n\u534a\u5468\u671f\u914d\u7f6e：1=\u534a\u5468\u671f（\u4ec5 8MHz \u4ee5\u4e0b\u4e14\u5173\u95ed\u9884\u53d6\u65f6\u7528）<\/span><\/td>\n<\/tr>\n
    bit31:6<\/span><\/td>\n\u4fdd\u7559<\/span><\/td>\n\u2014<\/span><\/td>\n\u2014<\/span><\/td>\n\u2014<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    LATENCY \u7b49\u5f85\u72b6\u6001\u8868（F103，HCLK \u9891\u7387\u51b3\u5b9a）：<\/span><\/p>\n\nHCLK \u9891\u7387<\/span>\u7535\u538b 2.7V~3.6V<\/span>\u7535\u538b 2.4V~2.7V<\/span><\/tr>\n\n\n\n\n
    0 < HCLK \u2264 24MHz<\/span><\/td>\n0 \u4e2a\u7b49\u5f85<\/span><\/td>\n0 \u4e2a\u7b49\u5f85<\/span><\/td>\n<\/tr>\n
    24MHz < HCLK \u2264 48MHz<\/span><\/td>\n1 \u4e2a\u7b49\u5f85<\/span><\/td>\n1 \u4e2a\u7b49\u5f85<\/span><\/td>\n<\/tr>\n
    48MHz < HCLK \u2264 72MHz<\/span><\/td>\n2 \u4e2a\u7b49\u5f85<\/span><\/td>\n2 \u4e2a\u7b49\u5f85<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u4e3a\u4ec0\u4e48\u9700\u8981\u7b49\u5f85\u72b6\u6001：<\/span><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Flash \u8bfb\u53d6\u901f\u5ea6\u662f\u56fa\u5b9a\u7684（\u7ea6 24MHz \u4e00\u4e2a\u5468\u671f），CPU \u4e3b\u9891 72MHz \u65f6 CPU \u6bcf 13.9ns \u5c31\u8981\u53d6\u4e00\u6b21\u6307，Flash \u8ddf\u4e0d\u4e0a，\u5fc5\u987b\u63d2\u5165 2 \u4e2a\u7b49\u5f85\u5468\u671f\u8ba9\u6570\u636e\u7a33\u5b9a\u3002<\/span><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7b49\u5f85\u72b6\u6001\u914d\u9519 = \u7a0b\u5e8f\u968f\u673a\u8dd1\u98de\u3002<\/span><\/p>\n

    3.2 FLASH_KEYR \u2014 \u5bc6\u94a5\u5bc4\u5b58\u5668（\u504f\u79fb 0x04）<\/span><\/h4>\n

    \u4f5c\u7528：\u89e3\u9501 Flash \u7f16\u7a0b\/\u64e6\u9664\u3002<\/span>\u53ea\u5199\u5bc4\u5b58\u5668，\u8bfb\u65e0\u610f\u4e49\u3002<\/span><\/p>\n\n\u5199\u5165\u503c<\/span>\u4f5c\u7528<\/span><\/tr>\n\n\n\n
    \u7b2c\u4e00\u6b21\u5199 0x45670123<\/span><\/td>\n\u5bc6\u94a5\u5e8f\u5217\u7b2c\u4e00\u90e8\u5206<\/span><\/td>\n<\/tr>\n
    \u7b2c\u4e8c\u6b21\u5199 0xCDEF89AB<\/span><\/td>\n\u5bc6\u94a5\u5e8f\u5217\u7b2c\u4e8c\u90e8\u5206，\u5199\u5bf9\u540e\u89e3\u9501<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u89e3\u9501\u7ec6\u8282：<\/span><\/p>\n

      \n
    • \u4e24\u628a\u5bc6\u94a5\u5fc5\u987b\u6309\u987a\u5e8f\u8fde\u7eed\u5199\u5165，\u4e2d\u95f4\u4e0d\u80fd\u9694\u5176\u4ed6 Flash \u64cd\u4f5c；<\/span><\/li>\n
    • \u5199\u9519\u4efb\u610f\u4e00\u628a：\u672c\u6b21\u89e3\u9501\u5931\u8d25，\u9700\u8981\u91cd\u65b0\u4ece\u7b2c\u4e00\u628a\u5f00\u59cb；<\/span><\/li>\n
    • \u89e3\u9501\u6210\u529f\u540e，FLASH_CR \u7684 LOCK \u4f4d\u81ea\u52a8\u6e05 0；<\/span><\/li>\n
    • \u786c\u4ef6\u590d\u4f4d\u6216\u7f6e LOCK=1 \u540e，Flash \u91cd\u65b0\u4e0a\u9501，\u9700\u91cd\u65b0\u89e3\u9501\u3002<\/span><\/li>\n<\/ul>\n

      3.3 FLASH_OPTKEYR \u2014 \u9009\u9879\u5b57\u8282\u5bc6\u94a5\u5bc4\u5b58\u5668（\u504f\u79fb 0x08）<\/span><\/h4>\n

      \u4f5c\u7528：\u89e3\u9501\u9009\u9879\u5b57\u8282\u7684\u7f16\u7a0b\/\u64e6\u9664（\u5199 OB \u533a\u57df\u524d\u5fc5\u987b\u5148\u89e3\u9501）\u3002<\/span><\/p>\n\n\u5199\u5165\u503c<\/span>\u4f5c\u7528<\/span><\/tr>\n\n\n\n
      \u7b2c\u4e00\u6b21\u5199 0x08192A3B<\/span><\/td>\n\u9009\u9879\u5b57\u8282\u5bc6\u94a5\u7b2c\u4e00\u90e8\u5206<\/span><\/td>\n<\/tr>\n
      \u7b2c\u4e8c\u6b21\u5199 0x4C5D6E7F<\/span><\/td>\n\u9009\u9879\u5b57\u8282\u5bc6\u94a5\u7b2c\u4e8c\u90e8\u5206<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \u548c KEYR \u540c\u6837\u7684\u673a\u5236：<\/span><\/p>\n

      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e24\u628a\u5bc6\u94a5\u3001\u6309\u5e8f\u5199\u3001\u5199\u9519\u91cd\u6765\u3002<\/span><\/p>\n

      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u53ea\u6709\u8981\u4fee\u6539\u9009\u9879\u5b57\u8282（\u8bfb\u4fdd\u62a4\/\u5199\u4fdd\u62a4\/\u786c\u4ef6\u72d7\u914d\u7f6e）\u65f6\u624d\u7528\u8fd9\u4e2a\u5bc4\u5b58\u5668\u3002<\/span><\/p>\n

      3.4 FLASH_SR \u2014 \u72b6\u6001\u5bc4\u5b58\u5668（\u504f\u79fb 0x0C）<\/span><\/h4>\n

      \u4f5c\u7528：\u67e5\u8be2 Flash \u64cd\u4f5c\u72b6\u6001\u3002\u8fd9\u662f\u7f16\u7a0b\u65f6\u67e5\u5f97\u6700\u591a\u7684\u5bc4\u5b58\u5668\u3002<\/span><\/p>\n\n\u4f4d<\/span>\u540d\u79f0<\/span>\u7c7b\u578b<\/span>\u590d\u4f4d\u503c<\/span>\u4f5c\u7528<\/span><\/tr>\n\n\n\n\n\n\n
      bit0<\/span><\/td>\nBSY<\/span><\/td>\nR<\/span><\/td>\n0<\/span><\/td>\n\u5fd9\u6807\u5fd7：1=\u6b63\u5728\u64e6\u9664\/\u7f16\u7a0b，\u4efb\u4f55\u65b0\u64cd\u4f5c\u524d\u5fc5\u987b\u7b49\u5b83=0<\/span><\/td>\n<\/tr>\n
      bit2<\/span><\/td>\nPGERR<\/span><\/td>\nRW0<\/span><\/td>\n0<\/span><\/td>\n\u7f16\u7a0b\u9519\u8bef：1=\u7f16\u7a0b\u64cd\u4f5c\u5931\u8d25（\u672a\u64e6\u9664\/\u5730\u5740\u672a\u5bf9\u9f50\/\u8d8a\u754c），\u5199 1 \u6e05\u9664<\/span><\/td>\n<\/tr>\n
      bit4<\/span><\/td>\nWRPRTERR<\/span><\/td>\nRW0<\/span><\/td>\n0<\/span><\/td>\n\u5199\u4fdd\u62a4\u9519\u8bef：1=\u8bd5\u56fe\u5199\u88ab\u4fdd\u62a4\u7684\u9875，\u5199 1 \u6e05\u9664<\/span><\/td>\n<\/tr>\n
      bit5<\/span><\/td>\nEOP<\/span><\/td>\nRW0<\/span><\/td>\n1<\/span><\/td>\n\u64cd\u4f5c\u5b8c\u6210：1=\u64e6\u9664\/\u7f16\u7a0b\u6210\u529f\u7ed3\u675f，\u5199 1 \u6e05\u9664<\/span><\/td>\n<\/tr>\n
      bit1,3,6,7<\/span><\/td>\n\u4fdd\u7559<\/span><\/td>\n\u2014<\/span><\/td>\n\u2014<\/span><\/td>\n\u2014<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \u5404\u6807\u5fd7\u7684\u4f7f\u7528\u573a\u666f：<\/span><\/p>\n

      while(FLASH->SR & FLASH_SR_BSY); \/\/ \u2460 \u64cd\u4f5c\u524d：\u7b49\u4e0a\u4e00\u6b21\u5fd9\u5b8c
      \n\/\/ … \u53d1\u8d77\u64e6\u9664\/\u7f16\u7a0b …
      \nwhile(FLASH->SR & FLASH_SR_BSY); \/\/ \u2461 \u64cd\u4f5c\u540e：\u7b49\u672c\u6b21\u5b8c\u6210<\/p>\n

      if(FLASH->SR & FLASH_SR_PGERR) { \/\/ \u2462 \u67e5\u7f16\u7a0b\u9519\u8bef
      \n \/\/ \u5904\u7406：\u4e00\u822c\u662f\u6ca1\u64e6\u9664\u5c31\u5199 \/ \u5730\u5740\u6ca1\u5bf9\u9f50
      \n}
      \nif(FLASH->SR & FLASH_SR_WRPRTERR) { \/\/ \u2463 \u67e5\u5199\u4fdd\u62a4\u9519\u8bef
      \n \/\/ \u5904\u7406：\u76ee\u6807\u9875\u88ab\u9009\u9879\u5b57\u8282\u5199\u4fdd\u62a4
      \n}
      \nFLASH->SR |= FLASH_SR_EOP; \/\/ \u2464 \u6e05\u9664\u5b8c\u6210\u6807\u5fd7（\u5199 1 \u6e05 0）<\/p>\n

      \u4e3a\u4ec0\u4e48 EOP \u590d\u4f4d\u503c\u662f 1：<\/span><\/p>\n

      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u82af\u7247\u8bbe\u8ba1\u65f6\u8ba9"\u672a\u53d1\u751f\u8fc7\u64cd\u4f5c"\u4e5f\u8868\u73b0\u4e3a\u5b8c\u6210，\u65b9\u4fbf\u8bfb\u53d6\u3002<\/span><\/p>\n

      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u771f\u6b63\u5224\u65ad"\u672c\u6b21\u64cd\u4f5c\u5b8c\u6210"\u8981\u770b BSY \u4ece 1 \u53d8 0，EOP \u53ea\u4f5c\u4e3a\u53ef\u9009\u7684\u5b8c\u6210\u786e\u8ba4\u3002<\/span><\/p>\n

      3.5 FLASH_CR \u2014 \u63a7\u5236\u5bc4\u5b58\u5668（\u504f\u79fb 0x10）<\/span><\/h4>\n

      \"\"<\/p>\n

      \u4f5c\u7528：\u63a7\u5236 Flash \u7684\u6a21\u5f0f（\u7f16\u7a0b\/\u64e6\u9664\/\u9009\u9879\u5b57\u8282）\u548c\u542f\u52a8\u3002\u8fd9\u662f\u6700\u6838\u5fc3\u7684\u5bc4\u5b58\u5668\u3002<\/span><\/p>\n\n\u4f4d<\/span>\u540d\u79f0<\/span>\u7c7b\u578b<\/span>\u590d\u4f4d\u503c<\/span>\u4f5c\u7528<\/span><\/tr>\n\n\n\n\n\n\n\n\n\n
      bit0<\/span><\/td>\nPG<\/span><\/td>\nRW<\/span><\/td>\n0<\/span><\/td>\n\u7f16\u7a0b\u4f7f\u80fd：1=\u8fdb\u5165\u7f16\u7a0b\u6a21\u5f0f（\u7f6e\u4f4d\u540e\u5199\u5730\u5740\u624d\u89e6\u53d1\u7f16\u7a0b）<\/span><\/td>\n<\/tr>\n
      bit1<\/span><\/td>\nPER<\/span><\/td>\nRW<\/span><\/td>\n0<\/span><\/td>\n\u9875\u64e6\u9664<\/span>\u4f7f\u80fd：1=\u8fdb\u5165\u9875\u64e6\u9664\u6a21\u5f0f<\/span><\/td>\n<\/tr>\n
      bit2<\/span><\/td>\nMER<\/span><\/td>\nRW<\/span><\/td>\n0<\/span><\/td>\n\u6574\u7247\u64e6\u9664<\/span>\u4f7f\u80fd：1=\u8fdb\u5165\u5168\u7247\u64e6\u9664\u6a21\u5f0f（\u5371\u9669！）<\/span><\/td>\n<\/tr>\n
      bit3<\/span><\/td>\nOPTPG<\/span><\/td>\nRW<\/span><\/td>\n0<\/span><\/td>\n\u9009\u9879\u5b57\u8282\u7f16\u7a0b\u4f7f\u80fd<\/span><\/td>\n<\/tr>\n
      bit4<\/span><\/td>\nOPTER<\/span><\/td>\nRW<\/span><\/td>\n0<\/span><\/td>\n\u9009\u9879\u5b57\u8282\u64e6\u9664\u4f7f\u80fd<\/span><\/td>\n<\/tr>\n
      bit5<\/span><\/td>\nSTRT<\/span><\/td>\nRW<\/span><\/td>\n0<\/span><\/td>\n\u542f\u52a8\u64e6\u9664：\u5199 1 \u542f\u52a8\u5f53\u524d\u6a21\u5f0f\u7684\u64e6\u9664（\u4ec5\u64e6\u9664\u9700\u8981，\u7f16\u7a0b\u4e0d\u9700\u8981）<\/span><\/td>\n<\/tr>\n
      bit6<\/span><\/td>\nLOCK<\/span><\/td>\nRW<\/span><\/td>\n1<\/span><\/td>\n\u9501\u5b9a：1=Flash \u9501\u5b9a；\u5199 1 \u4e0a\u9501，<\/span>\u53ea\u80fd\u7531\u786c\u4ef6\u590d\u4f4d\u6216\u6210\u529f\u89e3\u9501\u6e05 0<\/span><\/td>\n<\/tr>\n
      bit7<\/span><\/td>\nOPTWRE<\/span><\/td>\nRW<\/span><\/td>\n0<\/span><\/td>\n\u9009\u9879\u5b57\u8282\u5199\u4f7f\u80fd：1=\u5141\u8bb8\u5199\u9009\u9879\u5b57\u8282（\u89e3\u9501 OPTKEYR \u540e\u81ea\u52a8\u7f6e 1）<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      CR \u7684\u5173\u952e\u8bbe\u8ba1：<\/span><\/p>\n

        \n
      • \u6a21\u5f0f\u4f4d（PG\/PER\/MER）\u662f"\u9884\u8bbe\u7f6e"\u2014\u2014\u5148\u9009\u597d\u8981\u5e72\u4ec0\u4e48，\u518d\u89e6\u53d1；<\/span><\/li>\n
      • STRT \u53ea\u5bf9\u64e6\u9664\u6709\u6548\u2014\u2014\u64e6\u9664\u9700\u8981"\u6309\u542f\u52a8\u6309\u94ae"，\u7f16\u7a0b\u4e0d\u9700\u8981（\u5199\u6570\u636e\u52a8\u4f5c\u672c\u8eab\u89e6\u53d1）；<\/span><\/li>\n
      • LOCK \u53ea\u80fd\u5199 1 \u4e0d\u80fd\u5199 0\u2014\u2014\u4e0a\u9501\u5bb9\u6613，\u89e3\u9501\u5fc5\u987b\u8d70\u5bc6\u94a5\u6d41\u7a0b，\u9632\u8bef\u64cd\u4f5c\u3002<\/span><\/li>\n<\/ul>\n

        3.6 FLASH_AR \u2014 \u5730\u5740\u5bc4\u5b58\u5668（\u504f\u79fb 0x14）<\/span><\/h4>\n

        \u4f5c\u7528：\u6307\u5b9a\u64e6\u9664\u7684\u76ee\u6807\u5730\u5740\u3002<\/span><\/p>\n\n\u4f4d<\/span>\u540d\u79f0<\/span>\u7c7b\u578b<\/span>\u4f5c\u7528<\/span><\/tr>\n\n\n
        bit[31:0]<\/span><\/td>\nFAR<\/span><\/td>\nRW<\/span><\/td>\n\u9875\u64e6\u9664\u65f6\u5b58\u653e\u76ee\u6807\u9875\u5730\u5740<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u53ea\u6709\u9875\u64e6\u9664\u7528\u5230 AR；<\/span><\/p>\n

        \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6574\u7247\u64e6\u9664（MER）\u4e0d\u9700\u8981\u5730\u5740\u3002<\/span><\/p>\n

        \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7f16\u7a0b\u4e5f\u4e0d\u901a\u8fc7 AR\u2014\u2014\u7f16\u7a0b\u5730\u5740\u5c31\u662f\u4f60\u8981\u5199\u6570\u636e\u7684\u90a3\u4e2a\u5730\u5740\u672c\u8eab（\u76f4\u63a5\u5bf9 Flash \u5730\u5740\u5199）\u3002<\/span><\/p>\n

        3.7 FLASH_OBR \u2014 \u9009\u9879\u5b57\u8282\u72b6\u6001\u5bc4\u5b58\u5668（\u504f\u79fb 0x1C）<\/span><\/h4>\n

        \u4f5c\u7528：\u53ea\u8bfb，\u53cd\u6620\u5f53\u524d\u9009\u9879\u5b57\u8282\u7684\u914d\u7f6e\u72b6\u6001\u3002<\/span><\/p>\n\n\u4f4d<\/span>\u540d\u79f0<\/span>\u7c7b\u578b<\/span>\u4f5c\u7528<\/span><\/tr>\n\n\n\n\n\n\n
        bit0<\/span><\/td>\nOPTERR<\/span><\/td>\nR<\/span><\/td>\n\u9009\u9879\u5b57\u8282\u9519\u8bef：1=\u9009\u9879\u5b57\u8282\u6821\u9a8c\u5931\u8d25<\/span><\/td>\n<\/tr>\n
        bit1<\/span><\/td>\nRDPRT<\/span><\/td>\nR<\/span><\/td>\n\u8bfb\u4fdd\u62a4\u7ea7\u522b：00=Level 0，01=Level 1，10\/11=Level 2<\/span><\/td>\n<\/tr>\n
        bit2<\/span><\/td>\nIWDG_SW<\/span><\/td>\nR<\/span><\/td>\n\u770b\u95e8\u72d7\u914d\u7f6e：1=\u8f6f\u4ef6\u770b\u95e8\u72d7，0=\u786c\u4ef6\u770b\u95e8\u72d7<\/span><\/td>\n<\/tr>\n
        bit4:3<\/span><\/td>\nBOR_LEV<\/span><\/td>\nR<\/span><\/td>\n\u6389\u7535\u68c0\u6d4b\u9608\u503c\u7b49\u7ea7<\/span><\/td>\n<\/tr>\n
        bit[9:8]<\/span><\/td>\nnBOOT1<\/span><\/td>\nR<\/span><\/td>\n\u542f\u52a8\u6a21\u5f0f\u914d\u7f6e\u4f4d<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u8bfb\u8fd9\u4e2a\u5bc4\u5b58\u5668\u5c31\u80fd\u77e5\u9053\u82af\u7247\u5f53\u524d\u5904\u4e8e\u4ec0\u4e48\u4fdd\u62a4\/\u542f\u52a8\u72b6\u6001，\u4e0d\u7528\u56de\u8bfb\u9009\u9879\u5b57\u8282\u672c\u8eab\u3002<\/span><\/p>\n

        3.8 FLASH_WRPR \u2014 \u5199\u4fdd\u62a4\u5bc4\u5b58\u5668（\u504f\u79fb 0x20）<\/span><\/h4>\n

        \u4f5c\u7528：\u6807\u8bb0\u54ea\u4e9b\u9875\u88ab\u5199\u4fdd\u62a4（\u53ea\u8bfb，\u5b9e\u9645\u914d\u7f6e\u8981\u5199\u9009\u9879\u5b57\u8282\u533a）\u3002<\/span><\/p>\n\n\u4f4d<\/span>\u540d\u79f0<\/span>\u4f5c\u7528<\/span><\/tr>\n\n\n
        bit[127:0]<\/span><\/td>\nWRP<\/span><\/td>\n\u6bcf\u4e00\u4f4d\u5bf9\u5e94 4 \u9875（F103 \u4e2d\u6bcf bit \u4fdd\u62a4 4 \u4e2a 1KB \u9875），1=\u8be5\u7ec4\u88ab\u5199\u4fdd\u62a4<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u88ab\u5199\u4fdd\u62a4\u7684\u9875\u65e0\u6cd5\u64e6\u9664\u548c\u7f16\u7a0b，\u4f46\u53ef\u4ee5\u6b63\u5e38\u8bfb\u53d6\u3002<\/span><\/p>\n

        \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7528\u4e8e\u4fdd\u62a4 Bootloader \u7b49\u91cd\u8981\u533a\u57df\u4e0d\u88ab\u8bef\u5199\u3002<\/span><\/p>\n

        \n

        \u56db\u3001Flash \u4e09\u5927\u7279\u6027<\/span><\/h3>\n

        4.1 \u7279\u6027\u4e00：\u53ea\u80fd\u5199 0，\u4e0d\u80fd\u5199 1<\/span><\/h4>\n

        Flash \u4f4d\u72b6\u6001：
        \n 1（\u672a\u7f16\u7a0b）\u2500\u2500\u7f16\u7a0b\u2500\u2500\u25ba 0（\u5df2\u7f16\u7a0b）
        \n 0（\u5df2\u7f16\u7a0b）\u2500\u2500\u64e6\u9664\u2500\u2500\u25ba 1（\u672a\u7f16\u7a0b）<\/p>\n

        4.2 \u7279\u6027\u4e8c：\u64e6\u9664\u662f"\u6309\u5757"\u7684<\/span><\/h4>\n
          \n
        • \u64e6\u9664\u628a\u6574\u9875\/\u6574\u6247\u533a\u6062\u590d\u6210\u5168 1（0xFF）；<\/span><\/li>\n
        • \u4e0d\u80fd\u6309\u5b57\u8282\u64e6\u9664；<\/span><\/li>\n
        • \u4fee\u6539\u6570\u636e\u4e09\u6b65\u66f2：\u2460 \u8bfb\u51fa\u5230 SRAM \u2461 \u64e6\u6574\u9875 \u2462 \u91cd\u5199\u3002<\/span><\/li>\n<\/ul>\n

          4.3 \u7279\u6027\u4e09：\u5199\u524d\u5fc5\u987b\u64e6\u9664，\u4e14\u8981\u7b49 BSY<\/span><\/h4>\n
            \n
          • \u6bcf\u6b21\u64cd\u4f5c\u524d\u5fc5\u987b\u67e5 FLASH_SR.BSY=0；<\/span><\/li>\n
          • \u7f16\u7a0b\u5355\u4f4d：F1 \u534a\u5b57（16bit）\u3001F4 \u5b57（32bit）\/\u53cc\u5b57\u3002<\/span><\/li>\n<\/ul>\n
            \n

            \u4e94\u3001Flash \u5de5\u4f5c\u6d41\u7a0b\u987a\u5e8f（\u91cd\u70b9，\u9010\u6b65\u62c6\u89e3）<\/span><\/h3>\n

            \u6838\u5fc3\u603b\u5e8f：<\/span><\/p>\n

            \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u89e3\u9501 \u2192 \u7b49\u5f85\u7a7a\u95f2 \u2192 \u914d\u7f6e\u6a21\u5f0f \u2192 \u6307\u5b9a\u5730\u5740 \u2192 \u89e6\u53d1\u64cd\u4f5c \u2192 \u7b49\u5f85\u5b8c\u6210 \u2192 \u6e05\u9664\u6807\u5fd7 \u2192 \u9000\u51fa\u6a21\u5f0f \u2192 \u52a0\u9501\u3002<\/span><\/p>\n

            \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4e0b\u9762\u6309"\u4e3a\u4ec0\u4e48\u662f\u8fd9\u4e2a\u987a\u5e8f"\u9010\u9636\u6bb5\u8bb2\u3002<\/span><\/p>\n

            5.0 \u5de5\u4f5c\u6d41\u7a0b\u603b\u89c8<\/span><\/h4>\n

            \u9636\u6bb51 \u89e3\u9501 FLASH->KEYR \u8fde\u5199\u4e24\u628a\u5bc6\u94a5
            \n \u2502 （\u5fc5\u987b\u5148\u4e8e\u4e00\u5207\u64cd\u4f5c，\u5426\u5219 CR \u88ab\u9501，\u64cd\u4f5c\u65e0\u6548）
            \n \u25bc
            \n\u9636\u6bb52 \u7b49\u7a7a\u95f2 while(SR.BSY) \u2190 \u6bcf\u6b21\u90fd\u67e5
            \n \u2502
            \n \u25bc
            \n\u9636\u6bb53 \u914d\u7f6e\u6a21\u5f0f CR \u7f6e PG \/ PER \/ MER（\u5148\u9009\u6a21\u5f0f）
            \n \u2502
            \n \u25bc
            \n\u9636\u6bb54 \u6307\u5b9a\u5730\u5740 AR = \u76ee\u6807\u9875（\u4ec5\u9875\u64e6\u9664\u9700\u8981）
            \n \u2502
            \n \u25bc
            \n\u9636\u6bb55 \u89e6\u53d1\u64cd\u4f5c \u64e6\u9664：\u7f6e STRT=1 \u542f\u52a8
            \n \u2502 \u7f16\u7a0b：\u76f4\u63a5\u5411 Flash \u5730\u5740\u5199\u6570\u636e（\u5199\u52a8\u4f5c\u5373\u89e6\u53d1）
            \n \u25bc
            \n\u9636\u6bb56 \u7b49\u5b8c\u6210 while(SR.BSY) \u2190 \u64cd\u4f5c\u671f\u95f4 CPU \u505c\u5728\u8fd9
            \n \u2502
            \n \u25bc
            \n\u9636\u6bb57 \u6e05\u6807\u5fd7 SR \u5199 1 \u6e05 EOP（\u53ca\u9519\u8bef\u6807\u5fd7）
            \n \u2502
            \n \u25bc
            \n\u9636\u6bb58 \u9000\u51fa\u6a21\u5f0f CR \u6e05 PG \/ PER（\u9632\u6b62\u8bef\u89e6\u53d1）
            \n \u2502
            \n \u25bc
            \n\u9636\u6bb59 \u52a0\u9501 CR \u7f6e LOCK=1（\u9632\u8dd1\u98de\u8bef\u64e6\u5199）<\/p>\n

            5.1 \u9636\u6bb5\u4e00：\u89e3\u9501\u2014\u2014\u4e3a\u4ec0\u4e48\u5fc5\u987b\u5148\u505a？<\/span><\/h4>\n

            \u987a\u5e8f\u539f\u56e0：<\/span><\/p>\n

            \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0FLASH_CR \u7684 LOCK \u4f4d\u590d\u4f4d\u503c\u4e3a 1，Flash \u9ed8\u8ba4\u5904\u4e8e\u9501\u5b9a\u72b6\u6001\u3002<\/span><\/p>\n

            \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u9501\u5b9a\u65f6，CR \u7684\u6240\u6709\u6a21\u5f0f\u4f4d（PG\/PER\/MER）\u5199\u4e0d\u8fdb，\u4e00\u5207\u64cd\u4f5c\u65e0\u6548\u3002<\/span><\/p>\n

            FLASH->KEYR = 0x45670123; \/\/ \u5bc6\u94a5 1
            \nFLASH->KEYR = 0xCDEF89AB; \/\/ \u5bc6\u94a5 2 \u2192 \u786c\u4ef6\u6821\u9a8c\u901a\u8fc7 \u2192 LOCK \u6e05 0<\/p>\n

            \u7ec6\u8282：<\/span><\/p>\n

              \n
            • \u4e24\u628a\u5bc6\u94a5\u5fc5\u987b\u8fde\u7eed\u3001\u6309\u5e8f\u5199\u5165，\u4e2d\u95f4\u4e0d\u80fd\u63d2\u5165\u5176\u4ed6 Flash \u76f8\u5173\u64cd\u4f5c；<\/span><\/li>\n
            • \u5199\u9519\u4efb\u610f\u4e00\u628a：\u89e3\u9501\u5931\u8d25，CR \u4fdd\u6301\u9501\u5b9a，\u5fc5\u987b\u4ece\u5bc6\u94a5 1 \u91cd\u6765；<\/span><\/li>\n
            • \u89e3\u9501\u53ea\u89e3\u9664"\u8fd9\u4e00\u6b21"\u7684\u9501\u2014\u2014\u5982\u679c\u4e4b\u540e\u4f60\u7f6e LOCK=1 \u6216\u53d1\u751f\u590d\u4f4d，\u9700\u8981\u91cd\u65b0\u89e3\u9501\u3002<\/span><\/li>\n<\/ul>\n

              \u4e3a\u4ec0\u4e48\u8bbe\u8ba1\u6210\u4e24\u628a\u5bc6\u94a5：<\/span><\/p>\n

              \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8dd1\u98de\u540e PC \u968f\u673a\u5199\u5bc4\u5b58\u5668，\u8fde\u7eed\u5199\u5bf9\u4e24\u4e2a 32 \u4f4d\u7279\u5b9a\u503c（0x45670123 \u548c 0xCDEF89AB）\u7684\u6982\u7387\u4e3a 1\/2^64，\u51e0\u4e4e\u4e0d\u53ef\u80fd\u8bef\u89e3\u9501\u2014\u2014\u9632\u6b62\u7a0b\u5e8f\u5931\u63a7\u540e\u628a\u81ea\u5df1\u7684\u4ee3\u7801\u64e6\u6ca1\u3002<\/span><\/p>\n

              5.2 \u9636\u6bb5\u4e8c：\u7b49\u5f85\u7a7a\u95f2\u2014\u2014\u6bcf\u6b21\u64cd\u4f5c\u524d\u540e\u90fd\u8981\u67e5<\/span><\/h4>\n

              \u987a\u5e8f\u539f\u56e0：<\/span><\/p>\n

              \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Flash \u662f\u5355\u63a5\u53e3\u8bbe\u5907，\u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u505a\u4e00\u4e2a\u64cd\u4f5c\u3002<\/span><\/p>\n

              \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e0a\u4e00\u6b21\u64e6\u9664\/\u7f16\u7a0b\u6ca1\u7ed3\u675f（BSY=1）\u65f6，\u53d1\u8d77\u65b0\u64cd\u4f5c\u4f1a\u5bfc\u81f4\u672c\u6b21\u64cd\u4f5c\u65e0\u6548\u751a\u81f3\u9519\u8bef\u3002<\/span><\/p>\n

              while(FLASH->SR & FLASH_SR_BSY); \/\/ \u5fd9\u5219\u6b7b\u7b49<\/p>\n

              \u7ec6\u8282：<\/span><\/p>\n

                \n
              • BSY \u7531\u786c\u4ef6\u5728\u64cd\u4f5c\u5f00\u59cb\u7f6e 1\u3001\u7ed3\u675f\u6e05 0；<\/span><\/li>\n
              • \u89e3\u9501\u3001\u52a0\u9501\u4e0d\u9700\u8981\u7b49 BSY（\u5b83\u4eec\u4e0d\u8bbf\u95ee\u5b58\u50a8\u9635\u5217）；<\/span><\/li>\n
              • \u64e6\u9664\u3001\u7f16\u7a0b\u524d\u540e\u90fd\u8981\u67e5：\u524d\u9762\u7b49\u4e0a\u4e00\u6b21\u5b8c\u6210，\u540e\u9762\u7b49\u672c\u6b21\u5b8c\u6210\u3002<\/span><\/li>\n<\/ul>\n

                5.3 \u9636\u6bb5\u4e09：\u914d\u7f6e\u6a21\u5f0f\u2014\u2014\u5148\u9009\u6a21\u5f0f\u518d\u89e6\u53d1<\/span><\/h4>\n

                \u987a\u5e8f\u539f\u56e0：<\/span><\/p>\n

                \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CR \u662f"\u9884\u8bbe\u7f6e\u5bc4\u5b58\u5668"\u3002<\/span><\/p>\n

                \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5fc5\u987b\u5148\u628a\u6a21\u5f0f\u4f4d（PG\/PER\/MER）\u7f6e 1，\u518d\u89e6\u53d1，\u786c\u4ef6\u624d\u77e5\u9053\u63a5\u4e0b\u6765\u8981\u505a\u4ec0\u4e48\u3002<\/span><\/p>\n

                \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u53cd\u8fc7\u6765（\u5148\u89e6\u53d1\u518d\u8bbe\u6a21\u5f0f）\u65e0\u6548\u3002<\/span><\/p>\n

                \/\/ \u9875\u64e6\u9664\u6a21\u5f0f
                \nFLASH->CR |= FLASH_CR_PER; \/\/ \u9009\u9875\u64e6\u9664<\/p>\n

                \/\/ \u6574\u7247\u64e6\u9664\u6a21\u5f0f
                \nFLASH->CR |= FLASH_CR_MER; \/\/ \u9009\u5168\u7247\u64e6\u9664（\u5371\u9669）<\/p>\n

                \/\/ \u7f16\u7a0b\u6a21\u5f0f
                \nFLASH->CR |= FLASH_CR_PG; \/\/ \u9009\u7f16\u7a0b<\/p>\n

                \u7ec6\u8282：<\/span><\/p>\n

                  \n
                • PG\u3001PER\u3001MER \u4e92\u65a5\u4f7f\u7528\u2014\u2014\u4e00\u6b21\u53ea\u80fd\u9009\u4e00\u4e2a\u6a21\u5f0f，\u505a\u5b8c\u8981\u6e05\u6389\u518d\u6362\u4e0b\u4e00\u4e2a；<\/span><\/li>\n
                • \u9009\u5b8c\u6a21\u5f0f\u540e，\u786c\u4ef6\u5728\u4e0b\u4e00\u6b21\u89e6\u53d1\/\u5199\u6570\u636e\u65f6\u6309\u6a21\u5f0f\u6267\u884c；<\/span><\/li>\n
                • \u6a21\u5f0f\u4f4d\u4e0d\u6e05\u9664\u7684\u8bdd，\u540e\u7eed\u4efb\u4f55\u5199 Flash \u5730\u5740\u7684\u64cd\u4f5c\u90fd\u4f1a\u88ab\u5f53\u6210\u7f16\u7a0b\/\u64e6\u9664\u89e6\u53d1\u2014\u2014\u7528\u5b8c\u5fc5\u987b\u6e05\u3002<\/span><\/li>\n<\/ul>\n

                  5.4 \u9636\u6bb5\u56db：\u6307\u5b9a\u5730\u5740\u2014\u2014\u53ea\u6709\u9875\u64e6\u9664\u9700\u8981 AR<\/span><\/h4>\n

                  \u987a\u5e8f\u539f\u56e0：\u64e6\u9664\u9700\u8981\u77e5\u9053"\u64e6\u54ea\u4e00\u9875"，\u5730\u5740\u5148\u7ed9\u786c\u4ef6，\u89e6\u53d1\u540e\u624d\u6267\u884c\u3002<\/span><\/p>\n

                  FLASH->AR = page_addr; \/\/ \u9875\u64e6\u9664\u76ee\u6807\u5730\u5740（\u5fc5\u987b\u6309 1KB \u9875\u5bf9\u9f50）<\/p>\n

                  \u7ec6\u8282：<\/span><\/p>\n

                    \n
                  • \u9875\u64e6\u9664：\u5fc5\u987b\u5199 AR，\u4e14\u5730\u5740\u8981\u9875\u5bf9\u9f50（F1 \u6309 1KB \u5bf9\u9f50，\u5373\u5730\u5740\u4f4e 10 \u4f4d\u4e3a 0）；<\/span><\/li>\n
                  • \u6574\u7247\u64e6\u9664（MER）：\u4e0d\u9700\u8981 AR；<\/span><\/li>\n
                  • \u7f16\u7a0b：\u4e0d\u9700\u8981 AR\u2014\u2014\u7f16\u7a0b\u76ee\u6807\u5730\u5740\u5c31\u662f\u4f60\u5199\u6570\u636e\u7684\u90a3\u4e2a\u5730\u5740（*(volatile uint16_t*)addr = data）\u3002<\/span><\/li>\n<\/ul>\n

                    5.5 \u9636\u6bb5\u4e94：\u89e6\u53d1\u64cd\u4f5c\u2014\u2014\u64e6\u9664\u4e0e\u7f16\u7a0b\u7684\u89e6\u53d1\u65b9\u5f0f\u4e0d\u540c<\/span><\/h4>\n

                    \u64e6\u9664\u9700\u8981"\u6309\u542f\u52a8\u6309\u94ae"，\u7f16\u7a0b\u4e0d\u9700\u8981\u3002\u8fd9\u662f\u6700\u5bb9\u6613\u6df7\u7684\u70b9：<\/span><\/p>\n

                    \/\/ \u64e6\u9664\u89e6\u53d1：\u5199 STRT=1
                    \nFLASH->CR |= FLASH_CR_STRT;<\/p>\n

                    \/\/ \u7f16\u7a0b\u89e6\u53d1：\u76f4\u63a5\u5411 Flash \u5730\u5740\u5199\u6570\u636e，\u5199\u52a8\u4f5c\u672c\u8eab\u5373\u89e6\u53d1
                    \n*(volatile uint16_t*)addr = data;<\/p>\n

                    \u4e3a\u4ec0\u4e48\u7f16\u7a0b\u4e0d\u7528 STRT：<\/span><\/p>\n

                    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7f16\u7a0b\u7684\u89e6\u53d1\u6761\u4ef6\u662f"\u5411 Flash \u5730\u5740\u6267\u884c\u4e00\u6b21\u5199\u603b\u7ebf\u64cd\u4f5c"\u3002<\/span><\/p>\n

                    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u786c\u4ef6\u770b\u5230 PG=1 \u4e14\u51fa\u73b0 Flash \u5199\u8bbf\u95ee，\u5c31\u81ea\u52a8\u5f00\u59cb\u7f16\u7a0b\u2014\u2014\u4e0d\u9700\u8981\u989d\u5916\u7684\u542f\u52a8\u4f4d\u3002<\/span><\/p>\n

                    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u800c\u64e6\u9664\u6ca1\u6709"\u5199\u5730\u5740"\u8fd9\u4e2a\u52a8\u4f5c（\u64e6\u9664\u662f\u6574\u9875\u64cd\u4f5c），\u5fc5\u987b\u7528 STRT \u624b\u52a8\u542f\u52a8\u3002<\/span><\/p>\n

                    5.6 \u9636\u6bb5\u516d：\u7b49\u5f85\u5b8c\u6210\u2014\u2014\u64cd\u4f5c\u671f\u95f4 CPU \u53ea\u80fd\u7b49<\/span><\/h4>\n

                    while(FLASH->SR & FLASH_SR_BSY);<\/p>\n

                    \u7ec6\u8282：<\/span><\/p>\n

                      \n
                    • \u64e6\u9664 1KB \u9875：\u5178\u578b\u8017\u65f6 20~40ms；<\/span><\/li>\n
                    • \u7f16\u7a0b 1 \u4e2a\u534a\u5b57：\u5178\u578b\u8017\u65f6 40~50\u00b5s；<\/span><\/li>\n
                    • \u8fd9\u6bb5\u65f6\u95f4\u5185\u4e0d\u8981\u518d\u53d1\u8d77\u4efb\u4f55 Flash \u64cd\u4f5c；<\/span><\/li>\n
                    • \u64e6\u9664\u671f\u95f4（F1）\u4e0d\u80fd\u4ece\u88ab\u64e6\u9664\u7684 Flash \u6267\u884c\u4ee3\u7801\u2014\u2014\u56e0\u4e3a Flash \u63a5\u53e3\u6b63\u5fd9，\u53d6\u6307\u4f1a\u5931\u8d25\u3002\u64e6\u9664\/\u7f16\u7a0b\u51fd\u6570\u672c\u8eab\u8981\u653e\u5728 SRAM \u91cc\u8dd1，\u6216\u8005\u4fdd\u8bc1\u4ee3\u7801\u4e0d\u5728\u88ab\u64cd\u4f5c\u7684\u9875\u4e0a\u3002<\/span><\/li>\n<\/ul>\n

                      5.7 \u9636\u6bb5\u4e03：\u6e05\u9664\u6807\u5fd7\u2014\u2014\u5199 1 \u6e05 0<\/span><\/h4>\n

                      FLASH->SR |= FLASH_SR_EOP; \/\/ \u6e05\u9664\u5b8c\u6210\u6807\u5fd7
                      \nFLASH->SR |= FLASH_SR_PGERR; \/\/ \u82e5\u6709\u7f16\u7a0b\u9519\u8bef，\u6e05\u9664（\u4e5f\u4fbf\u4e8e\u4e0b\u6b21\u5224\u65ad）
                      \nFLASH->SR |= FLASH_SR_WRPRTERR; \/\/ \u82e5\u6709\u5199\u4fdd\u62a4\u9519\u8bef，\u6e05\u9664<\/p>\n

                      \u4e3a\u4ec0\u4e48\u5fc5\u987b\u6e05：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0EOP\u3001PGERR\u3001WRPRTERR \u662f\u7c98\u6027\u6807\u5fd7（\u7f6e 1 \u540e\u4fdd\u6301）\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e0d\u6e05\u9664\u7684\u8bdd，\u4e0b\u6b21\u5224\u65ad\u4f1a\u8bef\u4ee5\u4e3a"\u51fa\u9519"\u6216"\u5b8c\u6210"\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5199 1 \u6e05 0，\u5199 0 \u65e0\u6548\u3002<\/span><\/p>\n

                      5.8 \u9636\u6bb5\u516b：\u9000\u51fa\u6a21\u5f0f\u2014\u2014\u7528\u5b8c\u5fc5\u6e05<\/span><\/h4>\n

                      FLASH->CR &= ~FLASH_CR_PER; \/\/ \u9000\u51fa\u9875\u64e6\u9664\u6a21\u5f0f
                      \nFLASH->CR &= ~FLASH_CR_PG; \/\/ \u9000\u51fa\u7f16\u7a0b\u6a21\u5f0f<\/p>\n

                      \u4e3a\u4ec0\u4e48\u5fc5\u987b\u9000：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6a21\u5f0f\u4f4d\u4e0d\u6e05，\u4e4b\u540e\u4efb\u4f55\u4e00\u6b21\u8bef\u5199 Flash \u5730\u5740\u90fd\u4f1a\u89e6\u53d1\u7f16\u7a0b\/\u64e6\u9664，\u53ef\u80fd\u6bc1\u6389\u6570\u636e\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7528\u5b8c\u5373\u6e05，\u662f Flash \u9a71\u52a8\u7684\u57fa\u672c\u7d20\u517b\u3002<\/span><\/p>\n

                      5.9 \u9636\u6bb5\u4e5d：\u52a0\u9501\u2014\u2014\u6700\u540e\u4e00\u9053\u4fdd\u9669<\/span><\/h4>\n

                      FLASH->CR |= FLASH_CR_LOCK;<\/p>\n

                      \u4e3a\u4ec0\u4e48\u6700\u540e\u52a0\u9501：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u52a0\u9501\u540e\u6240\u6709\u6a21\u5f0f\u4f4d\u5199\u4e0d\u8fdb\u53bb，Flash \u56de\u5230"\u53ea\u8bfb"\u72b6\u6001\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6b64\u65f6\u5373\u4f7f\u7a0b\u5e8f\u8dd1\u98de\u4e71\u5199\u5bc4\u5b58\u5668，\u4e5f\u65e0\u6cd5\u89e6\u53d1\u64e6\u9664\/\u7f16\u7a0b\u2014\u2014\u628a"\u80fd\u7834\u574f Flash"\u7684\u7a97\u53e3\u7f29\u5230\u6700\u5c0f\u3002<\/span><\/p>\n

                      5.10 \u5b8c\u6574\u5e26\u9519\u8bef\u5904\u7406\u7684\u5de5\u4f5c\u6d41\u7a0b\u4ee3\u7801（F1 \u5bc4\u5b58\u5668\u7248）<\/span><\/h4>\n

                      \"\"<\/p>\n

                      \n

                      \u516d\u3001HAL \u5e93\u64cd\u4f5c（\u5bf9\u7167）<\/span><\/h3>\n

                      \"\"<\/p>\n

                      6.1 F1 \u9875\u64e6\u9664<\/span><\/h4>\n

                      FLASH_EraseInitTypeDef erase;
                      \nuint32_t page_error = 0;<\/p>\n

                      HAL_FLASH_Unlock(); \/\/ \u2460 \u89e3\u9501（\u5185\u90e8\u5e2e\u4f60\u5199\u4e86 KEYR \u4e24\u5bc6\u94a5）
                      \nerase.TypeErase = FLASH_TYPEERASE_PAGES;
                      \nerase.PageAddress = 0x08080000;
                      \nerase.NbPages = 1;
                      \nHAL_FLASHEx_Erase(&erase, &page_error); \/\/ \u2461\u2462\u2463\u2464 \u64e6\u9664（\u5185\u90e8\u5b8c\u6210\u5168\u90e8\u6d41\u7a0b）
                      \nHAL_FLASH_Lock(); \/\/ \u2465 \u52a0\u9501<\/p>\n

                      6.2 F4 \u6247\u533a\u64e6\u9664<\/span><\/h4>\n

                      FLASH_EraseInitTypeDef erase;
                      \nuint32_t sector_error = 0;<\/p>\n

                      HAL_FLASH_Unlock();
                      \nerase.TypeErase = FLASH_TYPEERASE_SECTORS;
                      \nerase.Sector = FLASH_SECTOR_6;
                      \nerase.NbSectors = 1;
                      \nerase.VoltageRange = FLASH_VOLTAGE_RANGE_3;
                      \nHAL_FLASHEx_Erase(&erase, &sector_error);
                      \nHAL_FLASH_Lock();<\/p>\n

                      6.3 \u7f16\u7a0b<\/span><\/h4>\n

                      HAL_FLASH_Unlock();
                      \nHAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, 0x08080000, 0x1234); \/\/ F1
                      \n\/\/ HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, 0x08080000, 0x12345678); \/\/ F4
                      \nHAL_FLASH_Lock();<\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0HAL \u5e93\u5e2e\u4f60\u5305\u597d\u4e86"\u7b49 BSY\u3001\u6e05 EOP\u3001\u6a21\u5f0f\u5207\u6362"\u8fd9\u4e9b\u810f\u6d3b，\u4f46\u5185\u90e8\u6d41\u7a0b\u548c\u6211\u4eec\u624b\u5199\u7684\u5b8c\u5168\u4e00\u81f4\u3002<\/span><\/p>\n

                      \n

                      \u4e03\u3001\u9009\u9879\u5b57\u8282（Option Bytes）<\/span><\/h3>\n

                      7.1 \u914d\u7f6e\u9879\u603b\u8868<\/span><\/h4>\n\n\u914d\u7f6e\u9879<\/span>\u4f5c\u7528<\/span><\/tr>\n\n\n\n\n\n\n
                      RDP（\u8bfb\u4fdd\u62a4）<\/span><\/td>\n\u9632\u8c03\u8bd5\u5668\/\u7a0b\u5e8f\u8bfb\u51fa Flash<\/span><\/td>\n<\/tr>\n
                      WRP（\u5199\u4fdd\u62a4）<\/span><\/td>\n\u9632\u8bef\u64e6\u5199\u6307\u5b9a\u9875<\/span><\/td>\n<\/tr>\n
                      IWDG_SW<\/span><\/td>\n\u8f6f\u4ef6\u770b\u95e8\u72d7 \/ \u786c\u4ef6\u770b\u95e8\u72d7<\/span><\/td>\n<\/tr>\n
                      BOR \u7ea7\u522b<\/span><\/td>\n\u6389\u7535\u68c0\u6d4b\u9608\u503c<\/span><\/td>\n<\/tr>\n
                      nBOOT1<\/span><\/td>\n\u542f\u52a8\u6a21\u5f0f\u914d\u7f6e<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                      7.2 \u786c\u4ef6\u770b\u95e8\u72d7（\u4e0e IWDG \u8054\u52a8）<\/span><\/h4>\n

                      IWDG_SW = 0：\u786c\u4ef6\u770b\u95e8\u72d7 \u2192 \u4e0a\u7535\u540e IWDG \u81ea\u52a8\u542f\u52a8，\u8f6f\u4ef6\u5173\u4e0d\u6389
                      \nIWDG_SW = 1：\u8f6f\u4ef6\u770b\u95e8\u72d7 \u2192 \u9700\u8f6f\u4ef6\u5199 KR=0xCCCC \u542f\u52a8<\/p>\n

                      7.3 \u8bfb\u4fdd\u62a4\u7ea7\u522b<\/span><\/h4>\n\n\u7ea7\u522b<\/span>\u542b\u4e49<\/span><\/tr>\n\n\n\n\n
                      Level 0<\/span><\/td>\n\u65e0\u4fdd\u62a4<\/span><\/td>\n<\/tr>\n
                      Level 1<\/span><\/td>\n\u7981\u6b62\u8c03\u8bd5\u53e3\u8bfb Flash（SWD\/JTAG）<\/span><\/td>\n<\/tr>\n
                      Level 2<\/span><\/td>\n\u6c38\u4e45\u9501\u5b9a，\u65e0\u6cd5\u964d\u7ea7（\u53d8\u7816）<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                      \n

                      \u516b\u3001\u5b9e\u6218：\u6389\u7535\u4fdd\u5b58\u6570\u636e<\/span><\/h3>\n

                      #define SAVE_ADDR 0x08080000 \/\/ \u4fdd\u5b58\u533a（Flash \u6700\u540e 1KB \u9875，\u907f\u5f00\u7a0b\u5e8f）<\/p>\n

                      uint16_t Flash_ReadData(void)
                      \n{
                      \n return *(volatile uint16_t*)SAVE_ADDR; \/\/ \u8bfb（\u65e0\u9700\u89e3\u9501，\u8bfb\u4e0d\u53d7\u9501\u5f71\u54cd）
                      \n}<\/p>\n

                      void Flash_SaveData(uint16_t data)
                      \n{
                      \n \/\/ \u5b8c\u6574 9 \u9636\u6bb5\u6d41\u7a0b（\u89c1 5.10 \u5b8c\u6574\u4ee3\u7801）
                      \n Flash_WriteHalfWord(SAVE_ADDR, data);
                      \n}<\/p>\n

                      int main(void)
                      \n{
                      \n uint16_t counter = Flash_ReadData();
                      \n counter++;
                      \n \/\/ … \u4e1a\u52a1 …
                      \n Flash_SaveData(counter); \/\/ \u6389\u7535\u524d\u4fdd\u5b58
                      \n}<\/p>\n

                      \u6ce8\u610f：\u4fdd\u5b58\u533a\u5fc5\u987b\u7f16\u8bd1\u94fe\u63a5\u65f6\u6392\u9664（\u6539\u5206\u6563\u52a0\u8f7d\/\u94fe\u63a5\u811a\u672c），\u5426\u5219\u7a0b\u5e8f\u4ee3\u7801\u4f1a\u5199\u8fdb\u8fd9\u4e00\u9875\u3002<\/span><\/p>\n

                      \n

                      \u4e5d\u3001\u5de5\u7a0b\u5751\u4f4d\u603b\u7ed3<\/span><\/h3>\n\n\u5751<\/span>\u539f\u56e0<\/span>\u89e3\u51b3<\/span><\/tr>\n\n\n\n\n\n\n\n\n\n
                      \u5199\u524d\u4e0d\u64e6\u9664 \u2192 \u6570\u636e\u4e0d\u5bf9<\/span><\/td>\nFlash \u53ea\u80fd 1\u21920<\/span><\/td>\n\u5fc5\u987b\u5148\u64e6\u6574\u9875<\/span><\/td>\n<\/tr>\n
                      \u64e6\u9664\u65f6\u5361\u6b7b<\/span><\/td>\nFlash \u63a5\u53e3\u5fd9 + \u4e0d\u80fd\u6267\u884c Flash \u5185\u4ee3\u7801<\/span><\/td>\n\u7b49 BSY；\u64e6\u5199\u51fd\u6570\u653e SRAM<\/span><\/td>\n<\/tr>\n
                      \u4e2d\u65ad\u91cc\u64cd\u4f5c Flash<\/span><\/td>\n\u64e6\u5199\u65f6\u95f4\u957f，\u4e2d\u65ad\u6253\u65ad<\/span><\/td>\n\u5173\u4e2d\u65ad\u6216\u907f\u5f00<\/span><\/td>\n<\/tr>\n
                      WRPERR<\/span><\/td>\n\u76ee\u6807\u533a\u88ab WRP \u5199\u4fdd\u62a4 \/ \u672a\u89e3\u9501<\/span><\/td>\n\u68c0\u67e5\u9009\u9879\u5b57\u8282<\/span><\/td>\n<\/tr>\n
                      PGERR<\/span><\/td>\n\u672a\u64e6\u9664 \/ \u5730\u5740\u672a\u5bf9\u9f50<\/span><\/td>\n\u5148\u64e6\u540e\u5199\u3001\u6309\u534a\u5b57\/\u5b57\u5bf9\u9f50<\/span><\/td>\n<\/tr>\n
                      \u6a21\u5f0f\u4f4d\u6ca1\u6e05<\/span><\/td>\n\u4e4b\u540e\u8bef\u5199\u5730\u5740\u89e6\u53d1\u7f16\u7a0b<\/span><\/td>\n\u7528\u5b8c\u5373\u6e05 PG\/PER<\/span><\/td>\n<\/tr>\n
                      Flash \u8d8a\u7528\u8d8a\u6162\/\u574f<\/span><\/td>\n\u5bff\u547d ~1 \u4e07\u6b21<\/span><\/td>\n\u6a21\u62df EEPROM \u78e8\u635f\u5747\u8861<\/span><\/td>\n<\/tr>\n
                      \u8c03\u8bd5\u6539\u4e86 Flash<\/span><\/td>\nSWD \u76f4\u63a5\u5199<\/span><\/td>\n\u751f\u4ea7\u524d\u8bbe\u8bfb\u4fdd\u62a4<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                      \n

                      \u9762\u8bd5\u9898（30 \u9053，\u7b54\u6848\u540c\u9875）<\/span><\/h3>\n

                      \u4e00\u3001\u57fa\u7840\u6982\u5ff5（\u539f 20 \u9053\u4fdd\u7559）<\/span><\/h4>\n

                      Q1. Flash \u548c SRAM \u7684\u672c\u8d28\u533a\u522b？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Flash \u975e\u6613\u5931（\u6389\u7535\u4fdd\u7559），\u5b58\u4ee3\u7801\u548c\u957f\u671f\u6570\u636e；<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0SRAM \u6613\u5931，\u5b58\u8fd0\u884c\u53d8\u91cf\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Flash \u9700\u64e6\u9664\u624d\u80fd\u91cd\u5199\u4e14\u5bff\u547d\u6709\u9650\u3002<\/span><\/p>\n

                      \n

                      Q2. \u4e3a\u4ec0\u4e48 Flash \u5199\u4e4b\u524d\u5fc5\u987b\u64e6\u9664？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7f16\u7a0b\u53ea\u80fd\u628a\u4f4d\u4ece 1 \u53d8\u6210 0，\u4e0d\u80fd 0\u21921\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u53ea\u6709\u64e6\u9664\u80fd\u628a\u6574\u9875\u6062\u590d\u6210\u5168 1，\u6240\u4ee5\u4fee\u6539\u5df2\u4e3a 0 \u7684\u4f4d\u5fc5\u987b\u5148\u64e6\u9664\u3002<\/span><\/p>\n

                      \n

                      Q3. F1 \u548c F4 \u7684 Flash \u64e6\u9664\u5355\u4f4d\u533a\u522b？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F1 \u9875\u5f0f 1KB\/\u9875；F4 \u6247\u533a\u5f0f 32KB\/128KB\/256KB\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F4 \u6539\u4e00\u4e2a\u5b57\u8282\u4e5f\u5f97\u64e6\u6574\u4e2a\u6247\u533a\u3002<\/span><\/p>\n

                      \n

                      Q4. \u89e3\u9501 Flash \u4e3a\u4ec0\u4e48\u8981\u5199\u4e24\u628a\u5bc6\u94a5？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u9632\u6b62\u7a0b\u5e8f\u8dd1\u98de\u540e\u8bef\u64e6 Flash\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fde\u7eed\u5199\u5bf9 0x45670123 \u548c 0xCDEF89AB \u6982\u7387\u6781\u4f4e，\u51e0\u4e4e\u4e0d\u53ef\u80fd\u8bef\u89e3\u9501\u3002<\/span><\/p>\n

                      \n

                      Q5. FLASH_SR \u6709\u54ea\u4e9b\u6807\u5fd7\u4f4d？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0BSY（\u5fd9）\u3001PGERR（\u7f16\u7a0b\u9519\u8bef）\u3001WRPRTERR（\u5199\u4fdd\u62a4\u9519\u8bef）\u3001EOP（\u5b8c\u6210）\u3002\u64cd\u4f5c\u524d\u67e5 BSY，\u51fa\u9519\u67e5 PGERR\/WRPRTERR，\u5b8c\u6210\u540e\u6e05 EOP\u3002<\/span><\/p>\n

                      \n

                      Q6. \u64e6\u9664\u548c\u7f16\u7a0b\u7684\u64cd\u4f5c\u6d41\u7a0b？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u89e3\u9501\u2192\u7b49 BSY=0\u2192\u8bbe CR \u6a21\u5f0f（PER\/PG）\u2192\u8bbe AR\u2192\u89e6\u53d1（\u64e6\u9664\u5199 STRT，\u7f16\u7a0b\u76f4\u63a5\u5199\u5730\u5740）\u2192\u7b49 BSY=0\u2192\u6e05 EOP\u2192\u9000\u51fa\u6a21\u5f0f\u2192\u52a0\u9501\u3002<\/span><\/p>\n

                      \n

                      Q7. \u64e6\u9664\/\u7f16\u7a0b\u65f6\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u6267\u884c Flash \u5185\u4ee3\u7801？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u64cd\u4f5c\u671f\u95f4 Flash \u63a5\u53e3\u88ab\u5360\u7528，\u65e0\u6cd5\u54cd\u5e94\u53d6\u6307\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F1 \u4ece Flash \u53d6\u6307\u4f1a\u505c\u987f\u5361\u6b7b\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u89e3\u51b3：\u64e6\u5199\u51fd\u6570\u653e SRAM \u6267\u884c\u3002<\/span><\/p>\n

                      \n

                      Q8. \u4ec0\u4e48\u662f\u9009\u9879\u5b57\u8282？\u80fd\u914d\u7f6e\u4ec0\u4e48？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Flash \u72ec\u7acb\u5c0f\u533a\u57df，\u914d\u7f6e\u786c\u4ef6\u884c\u4e3a：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0RDP \u8bfb\u4fdd\u62a4\u3001WRP \u5199\u4fdd\u62a4\u3001IWDG_SW \u786c\u4ef6\u770b\u95e8\u72d7\u3001BOR \u9608\u503c\u3001\u542f\u52a8\u6a21\u5f0f\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e0a\u7535\u81ea\u52a8\u8bfb\u53d6\u3002<\/span><\/p>\n

                      \n

                      Q9. \u786c\u4ef6\u770b\u95e8\u72d7\u9009\u9879\u662f\u4ec0\u4e48\u610f\u601d？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0IWDG_SW=0 \u65f6 IWDG \u4e0a\u7535\u81ea\u52a8\u542f\u52a8，\u65e0\u9700\u8f6f\u4ef6\u5199 0xCCCC，\u8f6f\u4ef6\u4e5f\u5173\u4e0d\u6389\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4fdd\u8bc1\u4ee3\u7801\u6ca1\u8dd1\u8d77\u6765\u72d7\u5df2\u5728\u76d1\u63a7\u3002<\/span><\/p>\n

                      \n

                      Q10. \u8bfb\u4fdd\u62a4 RDP \u7684\u4e09\u4e2a\u7ea7\u522b？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Level 0 \u65e0\u4fdd\u62a4；<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Level 1 \u7981\u6b62\u8c03\u8bd5\u53e3\u8bfb Flash；<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Level 2 \u6c38\u4e45\u9501\u5b9a\u65e0\u6cd5\u964d\u7ea7（\u53d8\u7816）\u3002<\/span><\/p>\n

                      \n

                      Q11. \u6a21\u62df EEPROM \u662f\u4ec0\u4e48？\u4e3a\u4ec0\u4e48\u9700\u8981？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7528 Flash \u6a21\u62df\u6309\u5b57\u8282\u5199\u7684 EEPROM\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u56e0 Flash \u64e6\u9664\u5355\u4f4d\u5927\u3001\u5bff\u547d\u77ed，\u901a\u8fc7"\u5199\u6ee1\u4e00\u9875\u624d\u64e6"\u3001\u78e8\u635f\u5747\u8861\u3001\u65e5\u5fd7\u5f0f\u5199\u5165\u5ef6\u957f\u5bff\u547d\u3002<\/span><\/p>\n

                      \n

                      Q12. Flash \u64e6\u5199\u5bff\u547d\u591a\u5c11？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5178\u578b 10,000 \u6b21\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u9891\u7e41\u64e6\u5199\u533a\u57df\u8981\u8bbe\u8ba1\u78e8\u635f\u5747\u8861\u3002<\/span><\/p>\n

                      \n

                      Q13. \u6389\u7535\u4fdd\u5b58\u6570\u636e\u7684\u4e00\u822c\u6b65\u9aa4？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u2460 \u89c4\u5212\u7a0b\u5e8f\u7528\u4e0d\u5230\u7684\u9875；<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u2461 \u4fdd\u5b58：\u8bfb\u65e7\u503c\u2192\u64e6\u6574\u9875\u2192\u5199\u65b0\u503c；<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u2462 \u4e0a\u7535\u4ece\u56fa\u5b9a\u5730\u5740\u8bfb\u56de\u3002<\/span><\/p>\n

                      \n

                      Q14. \u4e3a\u4ec0\u4e48\u5199 0xFF \u7b49\u4e8e"\u65e0\u64cd\u4f5c"？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00xFF \u5168\u4f4d\u4e3a 1，\u7f16\u7a0b\u53ea\u80fd 1\u21920\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5199 0xFF \u4e0d\u6539\u53d8\u4efb\u4f55\u4f4d，\u6240\u4ee5\u5bf9\u5168 1 \u533a\u57df\u5199\u65e0\u6548，\u5fc5\u987b\u5148\u64e6\u9664\u3002<\/span><\/p>\n

                      \n

                      Q15. \u7f16\u7a0b\u5730\u5740\u4e3a\u4ec0\u4e48\u8981\u5bf9\u9f50？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F1 \u6309\u534a\u5b57（16bit）\u5bf9\u9f50，F4 \u6309\u5b57（32bit）\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u672a\u5bf9\u9f50\u89e6\u53d1 PGERR\u3002<\/span><\/p>\n

                      \n

                      Q16. \u9884\u53d6\u7f13\u51b2\u548c\u7b49\u5f85\u72b6\u6001\u662f\u4ec0\u4e48？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CPU \u4e3b\u9891\u9ad8\u65f6 Flash \u8bfb\u53d6\u8ddf\u4e0d\u4e0a，\u9700\u63d2\u7b49\u5f85\u5468\u671f（WS）\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u9884\u53d6\u7f13\u51b2\u63d0\u524d\u53d6\u6307\u51cf\u5c11\u7b49\u5f85\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ACR \u914d\u7f6e\u3002<\/span><\/p>\n

                      \n

                      Q17. \u7a0b\u5e8f\u80fd\u76f4\u63a5\u4ece Flash \u6267\u884c\u5417？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u80fd\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Flash \u5728\u7edf\u4e00\u7f16\u5740\u7a7a\u95f4（0x08000000），CPU \u7ecf ICode \u603b\u7ebf\u76f4\u63a5\u53d6\u6307（XIP）\u3002\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6bd4\u5916\u90e8 SPI Flash \u5feb\u3002<\/span><\/p>\n

                      \n

                      Q18. OTP \u533a\u57df\u662f\u4ec0\u4e48？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e00\u6b21\u6027\u53ef\u7f16\u7a0b\u533a，\u53ea\u80fd\u5199\u4e00\u6b21\u4e0d\u53ef\u64e6\u9664\u3002\u5b58\u5e8f\u5217\u53f7\u3001MAC\u3001\u5bc6\u94a5\u3002<\/span><\/p>\n

                      \n

                      Q19. \u624b\u6495：\u89e3\u9501\u548c\u52a0\u9501\u3002<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      void Flash_Unlock(void) {
                      \n FLASH->KEYR = 0x45670123;
                      \n FLASH->KEYR = 0xCDEF89AB;
                      \n}
                      \nvoid Flash_Lock(void) {
                      \n FLASH->CR |= FLASH_CR_LOCK;
                      \n}<\/p>\n

                      \u4e8c\u3001\u5bc4\u5b58\u5668\u4e13\u9898<\/span><\/h4>\n

                      Q21. FLASH_ACR \u7684 LATENCY \u662f\u5e72\u4ec0\u4e48\u7684？F103 \u5728 72MHz \u4e0b\u5e94\u8bbe\u591a\u5c11？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Flash \u8bfb\u53d6\u7b49\u5f85\u72b6\u6001\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CPU \u4e3b\u9891\u9ad8\u8fc7 Flash \u901f\u5ea6\u65f6\u63d2\u5165\u7b49\u5f85\u5468\u671f\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F103 \u5728 72MHz（2.7~3.6V）\u4e0b\u5e94\u8bbe 2 \u4e2a\u7b49\u5f85\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8bbe\u9519\u4f1a\u5bfc\u81f4\u53d6\u6307\u9519\u4e71\u3001\u7a0b\u5e8f\u8dd1\u98de\u3002<\/span><\/p>\n

                      \n

                      Q22. FLASH_CR \u7684 PG\u3001PER\u3001MER \u5206\u522b\u662f\u4ec0\u4e48？\u80fd\u540c\u65f6\u7f6e\u4f4d\u5417？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0PG=\u7f16\u7a0b\u6a21\u5f0f\u3001PER=\u9875\u64e6\u9664\u6a21\u5f0f\u3001MER=\u6574\u7247\u64e6\u9664\u6a21\u5f0f\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e09\u4e2a\u4e92\u65a5，\u4e00\u6b21\u53ea\u80fd\u9009\u4e00\u4e2a，\u7528\u5b8c\u5fc5\u987b\u6e05\u9664\u3002<\/span><\/p>\n

                      \n

                      Q23. STRT \u4f4d\u662f\u4ec0\u4e48？\u4e3a\u4ec0\u4e48\u7f16\u7a0b\u4e0d\u9700\u8981\u5b83？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0STRT \u662f\u64e6\u9664\u542f\u52a8\u4f4d，\u5199 1 \u542f\u52a8\u5f53\u524d\u6a21\u5f0f\u7684\u64e6\u9664\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7f16\u7a0b\u4e0d\u9700\u8981，\u56e0\u4e3a\u7f16\u7a0b\u7684\u89e6\u53d1\u6761\u4ef6\u662f"\u5411 Flash \u5730\u5740\u5199\u6570\u636e"\u8fd9\u4e2a\u603b\u7ebf\u52a8\u4f5c\u672c\u8eab\u3002<\/span><\/p>\n

                      \n

                      Q24. LOCK \u4f4d\u4e3a\u4ec0\u4e48\u53ea\u80fd\u5199 1 \u4e0d\u80fd\u5199 0？<\/span><\/p>\n

                      A：\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span><\/p>\n

                      \u00a0 \u00a0 \u00a0 \u00a0 \u4e0a\u9501\u5bb9\u6613，\u89e3\u9501\u5fc5\u987b\u8d70 KEYR \u4e24\u5bc6\u94a5\u6d41\u7a0b\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u9632\u6b62\u7a0b\u5e8f\u8dd1\u98de\u540e\u76f4\u63a5\u5199 LOCK=0 \u89e3\u9501\u7136\u540e\u4e71\u64e6\u5199\u3002<\/span><\/p>\n

                      \n

                      Q25. FLASH_AR \u4ec0\u4e48\u65f6\u5019\u7528？\u4ec0\u4e48\u65f6\u5019\u4e0d\u7528？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u9875\u64e6\u9664\u65f6\u7528（\u6307\u5b9a\u76ee\u6807\u9875，\u9700\u9875\u5bf9\u9f50）；<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6574\u7247\u64e6\u9664\u548c\u7f16\u7a0b\u4e0d\u7528\u2014\u2014\u6574\u7247\u64e6\u9664\u4e0d\u9700\u8981\u5730\u5740，\u7f16\u7a0b\u5730\u5740\u5c31\u662f\u5199\u6570\u636e\u7684\u5730\u5740\u672c\u8eab\u3002<\/span><\/p>\n

                      \n

                      Q26. EOP \u6807\u5fd7\u4e3a\u4ec0\u4e48\u590d\u4f4d\u503c\u662f 1？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u82af\u7247\u8bbe\u8ba1\u8ba9"\u672a\u53d1\u751f\u64cd\u4f5c"\u4e5f\u8868\u73b0\u4e3a\u5b8c\u6210\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u771f\u6b63\u5224\u65ad\u64cd\u4f5c\u5b8c\u6210\u8981\u770b BSY \u4ece 1 \u53d8 0，EOP \u53ea\u4f5c\u53ef\u9009\u786e\u8ba4\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7528\u5b8c\u5199 1 \u6e05\u9664\u3002<\/span><\/p>\n

                      \n

                      Q27. OPTKEYR \u7684\u5bc6\u94a5\u662f\u4ec0\u4e48？\u4ec0\u4e48\u65f6\u5019\u7528？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00x08192A3B \u548c 0x4C5D6E7F\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4fee\u6539\u9009\u9879\u5b57\u8282（\u8bfb\u4fdd\u62a4\u3001\u5199\u4fdd\u62a4\u3001\u786c\u4ef6\u770b\u95e8\u72d7）\u524d\u5fc5\u987b\u5148\u89e3\u9501 OPTKEYR\u3002<\/span><\/p>\n

                      \n

                      Q28. OBR \u5bc4\u5b58\u5668\u80fd\u8bfb\u51fa\u4ec0\u4e48？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u53ea\u8bfb，\u53cd\u6620\u5f53\u524d\u9009\u9879\u5b57\u8282\u72b6\u6001：OPTERR \u6821\u9a8c\u9519\u8bef\u3001RDPRT \u8bfb\u4fdd\u62a4\u7ea7\u522b\u3001IWDG_SW \u770b\u95e8\u72d7\u6a21\u5f0f\u3001BOR_LEV \u6389\u7535\u9608\u503c\u3001nBOOT1 \u542f\u52a8\u914d\u7f6e\u3002<\/span><\/p>\n

                      \n

                      Q29. WRPR \u5199\u4fdd\u62a4\u5bc4\u5b58\u5668\u548c\u9009\u9879\u5b57\u8282 WRP \u4ec0\u4e48\u5173\u7cfb？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0WRPR \u662f\u53ea\u8bfb\u53cd\u6620\u4f4d，\u771f\u6b63\u7684\u5199\u4fdd\u62a4\u914d\u7f6e\u5728\u9009\u9879\u5b57\u8282\u91cc\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0WRPR \u6bcf\u4e00\u4f4d\u5bf9\u5e94 4 \u9875（F1），1=\u8be5\u7ec4\u88ab\u5199\u4fdd\u62a4，\u4e0d\u53ef\u64e6\u5199\u4f46\u53ef\u8bfb\u3002<\/span><\/p>\n

                      \n

                      Q30. \u624b\u6495：\u8bf4\u51fa Flash \u89e3\u9501\u5931\u8d25\u540e\u5982\u4f55\u6062\u590d\u3002<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u89e3\u9501\u5931\u8d25（\u5bc6\u94a5\u5199\u9519）\u4e0d\u4f1a\u635f\u574f Flash，\u53ea\u662f\u4fdd\u6301\u9501\u5b9a\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u53ea\u9700\u91cd\u65b0\u6309\u987a\u5e8f\u5199\u4e24\u628a\u5bc6\u94a5\u5373\u53ef，\u4e0d\u9700\u8981\u590d\u4f4d\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u82e5\u64cd\u4f5c\u4e2d\u4ea7\u751f PGERR\/WRPRTERR，\u5148\u6e05\u6807\u5fd7\u518d\u91cd\u65b0\u8d70\u6d41\u7a0b\u3002<\/span><\/p>\n

                      \n

                      \u5b8c\u6574\u5b9e\u73b0EEPROM（F103 \u5bc4\u5b58\u5668\u7248）<\/span><\/h3>\n

                      \u00a0\u5934\u6587\u4ef6 eeprom_sim.h<\/span><\/h4>\n

                      #ifndef __EEPROM_SIM_H
                      \n#define __EEPROM_SIM_H<\/p>\n

                      #include <stdint.h><\/p>\n

                      \/* \u53c2\u6570\u914d\u7f6e *\/
                      \n#define EEPROM_PAGE_SIZE 1024 \/* F103 \u4e00\u9875 1KB *\/
                      \n#define EEPROM_PAGE0 0x08080000 \/* \u98750（\u907f\u5f00\u7a0b\u5e8f\u533a，\u9700\u94fe\u63a5\u6392\u9664） *\/
                      \n#define EEPROM_PAGE1 0x08080400 \/* \u98751 *\/
                      \n#define EEPROM_SLOT_SIZE 4 \/* \u6bcf\u6761\u8bb0\u5f55 4 \u5b57\u8282：\u6570\u636e(2B)+\u72b6\u6001(2B) *\/
                      \n#define EEPROM_SLOTS (EEPROM_PAGE_SIZE \/ EEPROM_SLOT_SIZE) \/* \u6bcf\u9875 256 \u69fd *\/<\/p>\n

                      \/* \u72b6\u6001\u5b57\u8282 *\/
                      \n#define STATUS_EMPTY 0xFFFF \/* \u7a7a\u69fd（\u64e6\u9664\u6001） *\/
                      \n#define STATUS_VALID 0xAAAA \/* \u6709\u6548\u8bb0\u5f55 *\/
                      \n#define STATUS_INVALID 0x0000 \/* \u65e0\u6548\u8bb0\u5f55 *\/<\/p>\n

                      \/* \u5bf9\u5916\u63a5\u53e3 *\/
                      \nvoid EEPROM_Init(void);
                      \nuint16_t EEPROM_Read(uint16_t default_val);
                      \nvoid EEPROM_Write(uint16_t data);<\/p>\n

                      #endif<\/p>\n

                      \u00a0\u5e95\u5c42 Flash \u9a71\u52a8<\/span><\/h4>\n

                      \/* Flash \u5e95\u5c42：\u89e3\u9501\u3001\u64e6\u9875\u3001\u5199\u534a\u5b57 *\/
                      \nstatic void Flash_Unlock(void)
                      \n{
                      \n FLASH->KEYR = 0x45670123;
                      \n FLASH->KEYR = 0xCDEF89AB;
                      \n}<\/p>\n

                      static void Flash_Lock(void)
                      \n{
                      \n FLASH->CR |= FLASH_CR_LOCK;
                      \n}<\/p>\n

                      \/* \u64e6\u9664\u4e00\u9875 *\/
                      \nstatic void Flash_ErasePage(uint32_t page_addr)
                      \n{
                      \n while(FLASH->SR & FLASH_SR_BSY);
                      \n FLASH->CR |= FLASH_CR_PER; \/* \u9875\u64e6\u9664\u6a21\u5f0f *\/
                      \n FLASH->AR = page_addr; \/* \u76ee\u6807\u9875 *\/
                      \n FLASH->CR |= FLASH_CR_STRT; \/* \u542f\u52a8 *\/
                      \n while(FLASH->SR & FLASH_SR_BSY);
                      \n FLASH->SR |= FLASH_SR_EOP;
                      \n FLASH->CR &= ~FLASH_CR_PER; \/* \u9000\u51fa\u6a21\u5f0f *\/
                      \n}<\/p>\n

                      \/* \u7f16\u7a0b\u4e00\u4e2a\u534a\u5b57 *\/
                      \nstatic void Flash_ProgramHalfWord(uint32_t addr, uint16_t data)
                      \n{
                      \n while(FLASH->SR & FLASH_SR_BSY);
                      \n FLASH->CR |= FLASH_CR_PG; \/* \u7f16\u7a0b\u6a21\u5f0f *\/
                      \n *(volatile uint16_t*)addr = data; \/* \u5199\u6570\u636e\u5373\u89e6\u53d1 *\/
                      \n while(FLASH->SR & FLASH_SR_BSY);
                      \n FLASH->SR |= FLASH_SR_EOP;
                      \n FLASH->CR &= ~FLASH_CR_PG; \/* \u9000\u51fa\u6a21\u5f0f *\/
                      \n}<\/p>\n

                      \u00a0\u6a21\u62df EEPROM \u6838\u5fc3\u5b9e\u73b0 eeprom_sim.c<\/span><\/h4>\n

                      #include "eeprom_sim.h"
                      \n#include "stm32f10x.h" \/* \u6309\u4f60\u7684\u5de5\u7a0b\u6539\u5934\u6587\u4ef6 *\/<\/p>\n

                      static uint32_t g_cur_page; \/* \u5f53\u524d\u5199\u9875 *\/
                      \nstatic uint16_t g_last_valid; \/* \u7f13\u5b58\u6700\u65b0\u503c（\u52a0\u901f\u8bfb\u53d6 + \u7ffb\u9875\u7528） *\/<\/p>\n

                      \/* ———- \u69fd\u4f4d\u8bbf\u95ee\u8f85\u52a9 ———- *\/
                      \nstatic uint16_t slot_data(uint32_t page, uint16_t idx)
                      \n{
                      \n return *(volatile uint16_t*)(page + idx * EEPROM_SLOT_SIZE);
                      \n}<\/p>\n

                      static uint16_t slot_status(uint32_t page, uint16_t idx)
                      \n{
                      \n return *(volatile uint16_t*)(page + idx * EEPROM_SLOT_SIZE + 2);
                      \n}<\/p>\n

                      \/* \u5199\u69fd\u4f4d\u6570\u636e（\u6b64\u65f6\u72b6\u6001\u8fd8\u662f\u7a7a，\u8bfb\u4e0d\u5230） *\/
                      \nstatic void slot_write_data(uint32_t page, uint16_t idx, uint16_t data)
                      \n{
                      \n Flash_ProgramHalfWord(page + idx * EEPROM_SLOT_SIZE, data);
                      \n}<\/p>\n

                      \/* \u6570\u636e\u5199\u5b8c\u540e，\u628a\u72b6\u6001 0xFFFF \u2192 0xAAAA（\u6807\u8bb0\u6709\u6548，1\u21920 \u65e0\u9700\u64e6\u9664） *\/
                      \nstatic void slot_mark_valid(uint32_t page, uint16_t idx)
                      \n{
                      \n Flash_ProgramHalfWord(page + idx * EEPROM_SLOT_SIZE + 2, STATUS_VALID);
                      \n}<\/p>\n

                      \/* ———- \u6838\u5fc3\u67e5\u8be2：\u4ece\u9875\u5c3e\u5411\u524d\u627e\u6700\u540e\u4e00\u6761\u6709\u6548\u8bb0\u5f55 ———- *\/
                      \nstatic int find_last_valid(uint32_t page, uint16_t *idx, uint16_t *data)
                      \n{
                      \n int i;
                      \n for (i = EEPROM_SLOTS – 1; i >= 0; i–) {
                      \n if (slot_status(page, i) == STATUS_VALID) {
                      \n *idx = (uint16_t)i;
                      \n *data = slot_data(page, i);
                      \n return 1;
                      \n }
                      \n }
                      \n return 0; \/* \u9875\u91cc\u6ca1\u6709\u6709\u6548\u8bb0\u5f55 *\/
                      \n}<\/p>\n

                      \/* \u627e\u7b2c\u4e00\u4e2a\u7a7a\u69fd；\u9875\u6ee1\u8fd4\u56de -1 *\/
                      \nstatic int find_first_empty(uint32_t page)
                      \n{
                      \n int i;
                      \n for (i = 0; i < EEPROM_SLOTS; i++) {
                      \n if (slot_status(page, i) == STATUS_EMPTY)
                      \n return i;
                      \n }
                      \n return -1;
                      \n}<\/p>\n

                      \/* ———- \u521d\u59cb\u5316：\u626b\u63cf\u4e24\u9875，\u786e\u5b9a\u5f53\u524d\u5199\u9875\u548c\u6700\u65b0\u503c ———- *\/
                      \nvoid EEPROM_Init(void)
                      \n{
                      \n uint16_t d0, d1, i0, i1;
                      \n int f0 = find_last_valid(EEPROM_PAGE0, &i0, &d0);
                      \n int f1 = find_last_valid(EEPROM_PAGE1, &i1, &d1);<\/p>\n

                      if (!f0 && !f1) {
                      \n \/* \u5168\u65b0\u82af\u7247：\u4e24\u9875\u90fd\u7a7a，\u7528\u98750 *\/
                      \n g_cur_page = EEPROM_PAGE0;
                      \n g_last_valid = 0;
                      \n } else if (f0 && !f1) {
                      \n g_cur_page = EEPROM_PAGE0;
                      \n g_last_valid = d0;
                      \n } else if (!f0 && f1) {
                      \n g_cur_page = EEPROM_PAGE1;
                      \n g_last_valid = d1;
                      \n } else {
                      \n \/* \u4e24\u9875\u90fd\u6709\u6709\u6548\u8bb0\u5f55：\u53d6"\u69fd\u5e8f\u53f7\u66f4\u5927"\u7684\u4e00\u9875（\u66f4\u65b0\u7684\u65e5\u5fd7） *\/
                      \n if (i0 >= i1) {
                      \n g_cur_page = EEPROM_PAGE0;
                      \n g_last_valid = d0;
                      \n } else {
                      \n g_cur_page = EEPROM_PAGE1;
                      \n g_last_valid = d1;
                      \n }
                      \n }
                      \n}<\/p>\n

                      \/* ———- \u8bfb\u53d6：\u4f18\u5148\u5f53\u524d\u9875，\u627e\u4e0d\u5230\u518d\u67e5\u53e6\u4e00\u9875 ———- *\/
                      \nuint16_t EEPROM_Read(uint16_t default_val)
                      \n{
                      \n uint16_t data, idx;
                      \n if (find_last_valid(g_cur_page, &idx, &data))
                      \n return data;
                      \n \/* \u5f53\u524d\u9875\u65e0\u6709\u6548\u8bb0\u5f55（\u53ef\u80fd\u4e0a\u6b21\u7ffb\u9875\u9014\u4e2d\u6389\u7535），\u67e5\u53e6\u4e00\u9875 *\/
                      \n {
                      \n uint32_t other = (g_cur_page == EEPROM_PAGE0) ? EEPROM_PAGE1 : EEPROM_PAGE0;
                      \n if (find_last_valid(other, &idx, &data))
                      \n return data;
                      \n }
                      \n return default_val; \/* \u4ece\u672a\u5199\u8fc7 *\/
                      \n}<\/p>\n

                      \/* ———- \u5199\u5165 ———- *\/
                      \nvoid EEPROM_Write(uint16_t data)
                      \n{
                      \n int idx = find_first_empty(g_cur_page); \/* \u627e\u5f53\u524d\u9875\u7a7a\u69fd *\/<\/p>\n

                      if (idx < 0) {
                      \n \/* \u9875\u6ee1 \u2192 \u9875\u7ffb\u8f6c *\/
                      \n uint32_t other = (g_cur_page == EEPROM_PAGE0) ? EEPROM_PAGE1 : EEPROM_PAGE0;<\/p>\n

                      \/* \u2460 \u5148\u64e6\u5907\u7528\u9875 *\/
                      \n Flash_Unlock();
                      \n Flash_ErasePage(other);
                      \n Flash_Lock();<\/p>\n

                      \/* \u2461 \u628a\u6700\u65b0\u503c\u5199\u5165\u65b0\u9875\u69fd0（\u5148\u6570\u636e\u540e\u72b6\u6001，\u6389\u7535\u5b89\u5168） *\/
                      \n Flash_Unlock();
                      \n slot_write_data(other, 0, g_last_valid);
                      \n slot_mark_valid(other, 0);
                      \n Flash_Lock();<\/p>\n

                      \/* \u2462 \u518d\u64e6\u65e7\u9875（\u6b64\u65f6\u6700\u65b0\u503c\u5df2\u5728 other \u9875，\u65e7\u9875\u53ef\u5b89\u5168\u64e6\u9664） *\/
                      \n Flash_Unlock();
                      \n Flash_ErasePage(g_cur_page);
                      \n Flash_Lock();<\/p>\n

                      \/* \u2463 \u5207\u6362\u5f53\u524d\u5199\u9875，\u65b0\u9875\u69fd0\u5df2\u88ab\u5360\u7528，\u4e0b\u4e00\u4e2a\u7a7a\u69fd\u662f\u69fd1 *\/
                      \n g_cur_page = other;
                      \n idx = 1;
                      \n }<\/p>\n

                      \/* \u5199\u5165\u65b0\u8bb0\u5f55：\u5148\u5199\u6570\u636e，\u518d\u6807\u6709\u6548 *\/
                      \n Flash_Unlock();
                      \n slot_write_data(g_cur_page, (uint16_t)idx, data);
                      \n slot_mark_valid(g_cur_page, (uint16_t)idx);
                      \n Flash_Lock();<\/p>\n

                      g_last_valid = data; \/* \u66f4\u65b0\u7f13\u5b58 *\/
                      \n}<\/p>\n

                      \u6d4b\u8bd5 main.c<\/span><\/h4>\n

                      #include "eeprom_sim.h"
                      \n#include <stdio.h><\/p>\n

                      int main(void)
                      \n{
                      \n uint16_t boot_count;<\/p>\n

                      EEPROM_Init(); \/* \u2460 \u521d\u59cb\u5316（\u626b\u63cf\u4e24\u9875） *\/<\/p>\n

                      boot_count = EEPROM_Read(0); \/* \u2461 \u8bfb\u56de\u4e0a\u6b21\u7684\u8ba1\u6570\u503c *\/
                      \n boot_count++; \/* \u2462 \u672c\u6b21\u5f00\u673a +1 *\/
                      \n printf("boot count: %d\\\\n", boot_count);<\/p>\n

                      EEPROM_Write(boot_count); \/* \u2463 \u4fdd\u5b58（\u5199\u4e00\u4e2a\u65b0\u69fd） *\/<\/p>\n

                      while(1);
                      \n}<\/p>\n

                      \n

                      \u4e3a\u4ec0\u4e48 Flash \u6709\u534a\u5b57\u3001\u5355\u5b57\u3001\u53cc\u5b57\u5199\u5165<\/span><\/h2>\n

                      \u4e00\u53e5\u8bdd\u7b54\u6848：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0"\u6700\u5c0f\u5199\u5165\u5355\u4f4d"\u7531 Flash \u5b58\u50a8\u9635\u5217\u7684\u7269\u7406\u7ed3\u6784\u51b3\u5b9a\u2014\u2014\u7f16\u7a0b\u4e0d\u662f"\u5199\u4e00\u4e2a\u5b57\u8282"，\u800c\u662f"\u6cbf\u4e00\u884c\u5b57\u7ebf\u3001\u7ed9\u6574\u884c\u5355\u5143\u5e76\u884c\u6ce8\u5165\u7535\u8377"\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u884c\u6709\u591a\u5bbd，\u6700\u5c0f\u7f16\u7a0b\u5355\u4f4d\u5c31\u662f\u591a\u5bbd\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F1 \u7684\u7f16\u7a0b\u884c\u662f 16bit，\u6240\u4ee5\u53ea\u80fd\u534a\u5b57\u5199；<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F4 \u7684\u884c\u662f 32bit，\u6240\u4ee5\u662f\u5b57\u5199；F7\/H7 \u7684\u884c\u66f4\u5bbd，\u652f\u6301 64bit \u53cc\u5b57\u3002<\/span><\/p>\n

                      \u4e00\u3001\u5148\u5206\u6e05\u4e09\u4e2a\u7c92\u5ea6<\/span><\/h3>\n\n\u64cd\u4f5c<\/span>\u672c\u8d28<\/span>F1 (F103)<\/span>F4 (F407)<\/span><\/tr>\n\n\n\n\n
                      \u8bfb\u53d6<\/span><\/td>\n\u8bd1\u7801\u5bfb\u5740，\u8bfb\u4efb\u610f\u5b57\u8282<\/span><\/td>\n\u6309\u5b57\u8282\u8bfb<\/span><\/td>\n\u6309\u5b57\u8282\u8bfb<\/span><\/td>\n<\/tr>\n
                      \u7f16\u7a0b（\u5199）<\/span><\/td>\n\u5411\u6d6e\u6805\u6ce8\u5165\u7535\u8377<\/span><\/td>\n\u534a\u5b57 16bit<\/span><\/td>\n\u5b57 32bit（\u5927\u5bb9\u91cf\u578b\u53f7\u652f\u6301\u53cc\u5b57 64bit）<\/span><\/td>\n<\/tr>\n
                      \u64e6\u9664<\/span><\/td>\n\u4ece\u6d6e\u6805\u62bd\u53d6\u7535\u8377<\/span><\/td>\n\u6574\u9875 1KB<\/span><\/td>\n\u6574\u6247\u533a 32KB+<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                      \u8bfb\u53ef\u4ee5\u6309\u5b57\u8282，\u5199\u4e0d\u884c，\u64e6\u9664\u66f4\u662f\u4e00\u6574\u5757\u2014\u2014\u56e0\u4e3a\u4e09\u8005\u662f\u5b8c\u5168\u4e0d\u540c\u7684\u7269\u7406\u8fc7\u7a0b\u3002<\/span><\/p>\n

                      \n

                      \u4e8c\u3001\u7f16\u7a0b\u6700\u5c0f\u5355\u4f4d\u7684\u7269\u7406\u672c\u8d28<\/span><\/h3>\n

                      Flash \u5b58\u50a8\u5355\u5143\u662f\u6d6e\u6805\u6676\u4f53\u7ba1，\u9635\u5217\u7ec4\u7ec7\u662f"\u5b57\u7ebf \u00d7 \u4f4d\u7ebf"：<\/span><\/p>\n

                      Flash \u5b58\u50a8\u9635\u5217（\u793a\u610f，\u6bcf\u884c = \u4e00\u6b21\u7f16\u7a0b\u64cd\u4f5c\u7684\u5355\u4f4d）<\/p>\n

                      \u4f4d\u7ebf0 \u4f4d\u7ebf1 \u4f4d\u7ebf2 … \u4f4d\u7ebf15 \u2190 \u4e00"\u884c"\u5171 16 \u6761\u4f4d\u7ebf（F1 \u534a\u5b57）
                      \n \u2502 \u2502 \u2502 \u2502
                      \n\u5b57\u7ebf0 \u2500\u2500\u253c\u2500[\u5355\u5143]\u2500\u253c\u2500[\u5355\u5143]\u2500\u253c\u2500\u2500[\u5355\u5143]\u2500\u2500\u253c\u2500\u2500 \u2500\u2500\u25ba \u7f16\u7a0b\u65f6\u6574\u884c\u4e00\u8d77\u6ce8\u5165\u7535\u8377
                      \n\u5b57\u7ebf1 \u2500\u2500\u253c\u2500[\u5355\u5143]\u2500\u253c\u2500[\u5355\u5143]\u2500\u253c\u2500\u2500[\u5355\u5143]\u2500\u2500\u253c\u2500\u2500
                      \n \u2502 \u2502 \u2502 \u2502 \u2502<\/p>\n

                      \u5173\u952e\u673a\u5236：<\/span><\/p>\n

                    • \u7f16\u7a0b = \u5728\u5b57\u7ebf\u4e0a\u52a0\u9ad8\u538b，\u540c\u65f6\u628a\u6570\u636e\u9501\u5b58\u5230\u8fd9\u4e00\u884c\u7684**\u7f16\u7a0b\u7f13\u51b2\u5668（write buffer\/latch）**\u91cc；<\/span><\/li>\n
                    • \u7f13\u51b2\u5668\u91cc\u662f 1 \u7684\u4f4d\u4e0d\u6ce8\u5165\u7535\u8377（\u4fdd\u6301\u6d6e\u6805\u7a7a），\u662f 0 \u7684\u4f4d\u6ce8\u5165\u7535\u8377（\u6d6e\u6805\u5145\u7535 \u2192 \u9608\u503c\u7535\u538b\u5347\u9ad8 \u2192 \u8bfb\u51fa\u4e3a 0）；<\/span><\/li>\n
                    • \u6574\u884c\u5355\u5143\u662f\u4e00\u6b21\u6027\u5e76\u884c\u64cd\u4f5c\u7684\u2014\u2014\u786c\u4ef6\u53ea\u63d0\u4f9b"\u4e00\u884c"\u7684\u7535\u8377\u6ce8\u5165\u901a\u8def，\u8fd9\u5c31\u662f\u6700\u5c0f\u7f16\u7a0b\u5355\u4f4d；<\/span><\/li>\n
                    • \u8fd9\u4e00\u884c\u8fde\u4e86\u591a\u5c11\u6761\u4f4d\u7ebf，\u6700\u5c0f\u5355\u4f4d\u5c31\u662f\u591a\u5c11 bit\u3002<\/span><\/li>\n

                      \"\"<\/p>\n

                      \n

                      \u4e09\u3001\u4e3a\u4ec0\u4e48\u4e0d\u540c\u7cfb\u5217\u4e0d\u4e00\u6837\u5bbd<\/span><\/h3>\n\n\u56e0\u7d20<\/span>F1 (F103)<\/span>F4 (F407)<\/span>F7\/H7<\/span><\/tr>\n\n\n\n\n\n
                      \u5185\u6838<\/span><\/td>\nCortex-M3（32bit）<\/span><\/td>\nCortex-M4（32bit）<\/span><\/td>\nCortex-M7（\u53cc\u53d1\u5c04，\u53d6\u6307 64bit）<\/span><\/td>\n<\/tr>\n
                      \u5236\u9020\u5de5\u827a<\/span><\/td>\n\u8f83\u8001（90nm \u7ea7）<\/span><\/td>\n\u8f83\u65b0（65nm \u7ea7）<\/span><\/td>\n\u66f4\u65b0（40nm \u7ea7）<\/span><\/td>\n<\/tr>\n
                      \u7f16\u7a0b\u6700\u5c0f\u5355\u4f4d<\/span><\/td>\n\u534a\u5b57 16bit<\/span><\/td>\n\u5b57 32bit（\u4f4e\u5bb9\u91cf）\/ \u53cc\u5b57 64bit（\u9ad8\u5bb9\u91cf）<\/span><\/td>\n\u53cc\u5b57 64bit（\u90e8\u5206 256bit）<\/span><\/td>\n<\/tr>\n
                      \u64e6\u9664\u5355\u4f4d<\/span><\/td>\n\u9875 1KB<\/span><\/td>\n\u6247\u533a 32KB+<\/span><\/td>\n\u6247\u533a 32KB\/64KB\/128KB<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                      \u5177\u4f53\u539f\u56e0：<\/span><\/p>\n

                    • \u603b\u7ebf\u4e0e\u5185\u6838\u5bbd\u5ea6：CPU \u6570\u636e\u603b\u7ebf\u662f 32bit，F1 \u65f6\u4ee3 Flash \u63a5\u53e3\u6309 16bit \u7ec4\u7ec7（\u534a\u5b57），\u4e00\u6b21\u5199\u64cd\u4f5c\u5bf9\u5e94\u4e00\u6761\u7269\u7406\u7f16\u7a0b\u884c；F4 \u628a\u7f16\u7a0b\u884c\u52a0\u5bbd\u5230 32bit，\u4e0e\u603b\u7ebf\u5bf9\u9f50；M7 \u5185\u6838\u53d6\u6307\u662f 64bit，Flash \u63a5\u53e3\u968f\u4e4b\u52a0\u5bbd\u5230 64bit\u2014\u2014\u63a5\u53e3\u8d8a\u5bbd，\u7f16\u7a0b\u884c\u8d8a\u5bbd，\u6700\u5c0f\u5355\u4f4d\u8d8a\u5927\u3002<\/span><\/li>\n
                    • \u5de5\u827a\u4e0e\u9762\u79ef\u6210\u672c：\u7f16\u7a0b\u884c\u52a0\u5bbd\u610f\u5473\u7740\u540c\u4e00\u65f6\u523b\u5e76\u884c\u6ce8\u5165\u7535\u8377\u7684\u5355\u5143\u66f4\u591a，\u9700\u8981\u66f4\u5927\u7684\u7535\u8377\u6cf5（charge pump）\u8f93\u51fa\u7535\u6d41\u3001\u66f4\u7c97\u7684\u7535\u6e90\/\u5730\u8d70\u7ebf\u3001\u66f4\u5927\u7684\u5b58\u50a8\u5355\u5143\u9762\u79ef\u3002\u8001\u5de5\u827a\u505a\u4e0d\u4e86\u592a\u5bbd\u7684\u7f16\u7a0b\u884c，\u65b0\u5de5\u827a\u53ef\u4ee5\u3002<\/span><\/li>\n
                    • \u6027\u80fd\u6743\u8861：\u884c\u8d8a\u5bbd，\u4e00\u6b21\u7f16\u7a0b\u5199\u5165\u7684\u6570\u636e\u8d8a\u591a（\u7f16\u7a0b\u65f6\u95f4\u51e0\u4e4e\u4e0d\u53d8），\u5199\u5165\u541e\u5410\u7387\u8d8a\u9ad8\u3002F7 \u53cc\u5b57\u5199\u5165\u6bd4 F1 \u534a\u5b57\u5199\u5165\u5feb 4 \u500d\u3002<\/span><\/li>\n
                      \n

                      \u56db\u3001\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u6309\u5b57\u8282\u5199？（\u7269\u7406\u9650\u5236）<\/span><\/h3>\n

                      \u4f60\u53ef\u80fd\u60f3\u95ee：<\/span>\u4e3a\u4ec0\u4e48 EEPROM \u80fd\u6309\u5b57\u8282\u5199，Flash \u4e0d\u884c？<\/span><\/p>\n

                    • \u7f16\u7a0b\u5e72\u6270（Program Disturb）：\u7ed9\u4e00\u884c\u52a0\u9ad8\u538b\u65f6，\u540c\u4e00\u5b57\u7ebf\u4e0a\u7684\u5176\u4ed6\u5355\u5143\u4e5f\u4f1a\u53d7\u5230\u5e94\u529b，\u53ef\u80fd\u88ab\u8bef\u7f16\u7a0b\u3002\u884c\u8d8a\u7a84，\u53d7\u5f71\u54cd\u7684\u90bb\u5355\u5143\u8d8a\u5c11\u3002Flash \u8ffd\u6c42\u5bc6\u5ea6，\u7528"\u6574\u884c\u5e76\u884c"\u6765\u6362\u53d6\u9762\u79ef，\u4ee3\u4ef7\u5c31\u662f\u6700\u5c0f\u5355\u4f4d\u5927\u3002<\/span><\/li>\n
                    • \u7535\u8377\u6cf5\u80fd\u529b：\u6309\u5b57\u8282\u5199\u8981\u5355\u72ec\u7ed9\u4e00\u4e2a\u5355\u5143\u52a0\u9ad8\u538b，\u800c Flash \u5355\u5143\u7684\u5199\u5165\u7535\u538b\u8981\u9760\u7247\u5185\u7535\u8377\u6cf5\u4ece 1.8V\/3.3V \u5347\u5230 ~10V\u3002\u4e00\u6b21\u9a71\u52a8\u6574\u884c\u7684\u7535\u6d41\u9884\u7b97\u56fa\u5b9a，\u5e76\u884c\u5199\u6574\u884c\u6bd4\u9010\u4e2a\u5199\u5b57\u8282\u66f4\u9ad8\u6548（\u603b\u65f6\u95f4\u66f4\u77ed）\u3002<\/span><\/li>\n
                    • \u67b6\u6784\u7ee7\u627f：NOR Flash \u6700\u521d\u5c31\u662f\u6309"\u884c（word line）"\u7ec4\u7ec7\u7684，\u534a\u5bfc\u4f53\u5382\u7684 Flash IP \u884c\u5bbd\u56fa\u5b9a，MCU \u53ea\u662f\u628a\u8fd9\u4e00\u884c\u5bbd\u66b4\u9732\u7ed9\u7528\u6237：F1 \u66b4\u9732 16bit\u3001F4 \u66b4\u9732 32bit\u3002<\/span><\/li>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5916\u90e8 I2C EEPROM \u6309\u5b57\u8282\u5199，\u662f\u56e0\u4e3a\u5b83\u7684\u5b58\u50a8\u5bc6\u5ea6\u4f4e\u3001\u5355\u5143\u5927\u3001\u5de5\u827a\u5bb9\u5fcd\u9010\u5b57\u8282\u64cd\u4f5c\u2014\u2014\u4ee3\u4ef7\u662f\u5bb9\u91cf\u5c0f（Kbit \u7ea7）\u3001\u901f\u5ea6\u6162\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5185\u90e8 Flash \u8ffd\u6c42\u9ad8\u5bc6\u5ea6\u5927\u5bb9\u91cf，\u5c31\u5f97\u63a5\u53d7"\u6574\u884c\u5199\u3001\u6574\u5757\u64e6"\u7684\u7269\u7406\u7ea6\u675f\u3002<\/span><\/p>\n

                      \n

                      \u4e94\u3001\u5bf9\u5f00\u53d1\u8005\u7684\u5b9e\u9645\u5f71\u54cd<\/span><\/h3>\n\n\u5f71\u54cd\u70b9<\/span>\u8bf4\u660e<\/span><\/tr>\n\n\n\n\n\n
                      \u5730\u5740\u5bf9\u9f50<\/span><\/td>\nF1 \u534a\u5b57\u5199\u5fc5\u987b 2 \u5b57\u8282\u5bf9\u9f50；F4 \u5b57\u5199\u5fc5\u987b 4 \u5b57\u8282\u5bf9\u9f50；\u672a\u5bf9\u9f50 \u2192 PGERR<\/span><\/td>\n<\/tr>\n
                      \u6a21\u62df EEPROM \u69fd\u4f4d\u8bbe\u8ba1<\/span><\/td>\n\u69fd\u4f4d\u5bbd\u5ea6\u5fc5\u987b \u2265 \u7f16\u7a0b\u5355\u4f4d：F1 \u69fd\u4f4d 4B（2B \u6570\u636e+2B \u72b6\u6001）\u6ca1\u95ee\u9898；F4 \u4e0a\u8981\u6309 4\/8B \u8bbe\u8ba1，\u72b6\u6001\u5b57\u6bb5\u6700\u597d\u7528\u5b8c\u6574\u5b57<\/span><\/td>\n<\/tr>\n
                      \u5199\u6570\u7ec4\/\u7ed3\u6784\u4f53<\/span><\/td>\n\u4e0d\u80fd\u76f4\u63a5 memcpy \u5230 Flash\u2014\u2014\u5fc5\u987b\u6309\u534a\u5b57\/\u5b57\u9010\u4e2a\u7f16\u7a0b<\/span><\/td>\n<\/tr>\n
                      \u8de8\u884c\u8fb9\u754c<\/span><\/td>\n\u4e00\u4e2a"\u6570\u636e\u9879"\u4e0d\u80fd\u6a2a\u8de8\u4e24\u4e2a\u7f16\u7a0b\u884c\u8fb9\u754c，\u5426\u5219\u8981\u62c6\u6210\u4e24\u6b21\u64cd\u4f5c<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                      \n

                      \u9762\u8bd5\u9898<\/span><\/h3>\n

                      Q1. F1 \u548c F4 \u7684 Flash \u7f16\u7a0b\u6700\u5c0f\u5355\u4f4d\u5206\u522b\u662f\u4ec0\u4e48？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F1 \u534a\u5b57 16bit（2 \u5b57\u8282\u5bf9\u9f50），F4 \u5b57 32bit（4 \u5b57\u8282\u5bf9\u9f50），\u5927\u5bb9\u91cf F4 \u53ca F7 \u652f\u6301\u53cc\u5b57 64bit\u3002<\/span><\/p>\n

                      \n

                      Q2. \u4e3a\u4ec0\u4e48\u7f16\u7a0b\u5355\u4f4d\u662f\u534a\u5b57\/\u5b57\u800c\u4e0d\u662f\u5b57\u8282？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7f16\u7a0b\u662f\u7269\u7406\u4e0a"\u6574\u884c\u5e76\u884c\u6ce8\u5165\u7535\u8377"，\u884c\u5bbd\u7531\u5b58\u50a8\u9635\u5217\u7684\u4f4d\u7ebf\u6570\u91cf\u51b3\u5b9a\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Flash \u4ee5\u884c\u7ec4\u7ec7\u8ffd\u6c42\u5bc6\u5ea6，\u6700\u5c0f\u7f16\u7a0b\u5355\u4f4d = \u884c\u5bbd，\u65e0\u6cd5\u50cf EEPROM \u90a3\u6837\u9010\u5b57\u8282\u64cd\u4f5c\u3002<\/span><\/p>\n

                      \n

                      Q3. \u7f16\u7a0b\u5355\u4f4d\u8ddf\u4ec0\u4e48\u786c\u4ef6\u6709\u5173？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5185\u6838\u603b\u7ebf\u5bbd\u5ea6（M3 32bit \/ M7 64bit）\u3001\u5236\u9020\u5de5\u827a（\u65b0\u5de5\u827a\u80fd\u652f\u6491\u66f4\u5bbd\u7684\u7f16\u7a0b\u884c\u548c\u66f4\u5927\u7684\u7535\u8377\u6cf5）\u3001Flash IP \u7684\u5b58\u50a8\u9635\u5217\u7ec4\u7ec7\u3002<\/span><\/p>\n

                      \n

                      Q4. \u672a\u5bf9\u9f50\u5199\u4f1a\u600e\u6837？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u89e6\u53d1\u7f16\u7a0b\u9519\u8bef\u6807\u5fd7 PGERR，\u6570\u636e\u4e0d\u5199\u5165\u3002<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F1 \u5199 3 \u5b57\u8282\u5bf9\u9f50\u5730\u5740\u3001F4 \u5199 2 \u5b57\u8282\u5bf9\u9f50\u5730\u5740\u90fd\u4f1a\u62a5\u9519\u3002<\/span><\/p>\n

                      \n

                      Q5. F4 \u4e0a\u505a\u6a21\u62df EEPROM \u8981\u6ce8\u610f\u4ec0\u4e48？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u69fd\u4f4d\u6309 4\/8 \u5b57\u8282\u5bf9\u9f50\u8bbe\u8ba1；<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6247\u533a\u6700\u5c0f 32KB，\u64e6\u9664\u4ee3\u4ef7\u5927，\u4e24\u9875\u7ffb\u8f6c\u8981\u5360 64KB；<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7f16\u7a0b\u5355\u4f4d\u662f\u5b57，\u72b6\u6001\u5b57\u6bb5\u4e5f\u8981\u7528\u5b8c\u6574\u5b57\u5199\u5165\u3002<\/span><\/p>\n

                      \n

                      Q6. \u4e3a\u4ec0\u4e48\u8bfb\u53d6\u53ef\u4ee5\u6309\u5b57\u8282\u800c\u5199\u5165\u4e0d\u884c？<\/span><\/p>\n

                      A：<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8bfb\u53d6\u662f\u4f4e\u7535\u538b\u8bd1\u7801\u5bfb\u5740，\u4e0d\u6539\u53d8\u7535\u8377，\u53ef\u4ee5\u4efb\u610f\u5bfb\u5740\u4efb\u610f\u5b57\u8282；<\/span><\/p>\n

                      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5199\u5165\u9700\u8981\u5347\u538b\u3001\u6574\u884c\u5e76\u884c\u6ce8\u5165\u7535\u8377，\u53ea\u80fd\u6309\u884c（\u7f16\u7a0b\u5355\u4f4d）\u64cd\u4f5c\u3002<\/span><\/p>\n<\/p>\n

                      \n

                      \"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

                      \u5185\u90e8 Flash \u8be6\u89e3：\u5bc4\u5b58\u5668\u9010\u4f4d\u62c6\u89e3 \u5de5\u4f5c\u6d41\u7a0b\u987a\u5e8f\u5168\u8bb2\u00a0\u00a0\u4e00\u3001\u57fa\u7840\u6982\u5ff5（\u56de\u987e）1.1 \u4ec0\u4e48\u662f\u5185\u90e8 FlashFlash（\u95ea\u5b58） \u662f STM32 \u82af\u7247\u5185\u90e8\u7684\u975e\u6613\u5931\u6027\u5b58\u50a8\u5668：\u6389\u7535\u4e0d\u4e22\u5931：\u65ad\u7535\u540e\u6570\u636e\u4f9d\u7136\u4fdd\u7559；\u7247\u5185\u96c6\u6210：\u540c\u4e00\u9897\u82af\u7247\u5185，\u603b\u7ebf\u76f4\u63a5\u8bbf\u95ee；\u53ef\u64e6\u5199：\u53ef\u53cd\u590d\u64e6\u9664\u548c\u7f16\u7a0b（\u5bff\u547d\u7ea6 1 \u4e07\u6b21&#xff0<\/p>\n","protected":false},"author":2,"featured_media":120188,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[868,217,270,269],"topic":[],"class_list":["post-120194","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-868","tag-stm32","tag-270","tag-269"],"yoast_head":"\n\u3010STM32\u3011 \u5185\u90e8 Flash \u8be6\u89e3\uff1a\u5bc4\u5b58\u5668\u9010\u4f4d\u62c6\u89e3 + \u5de5\u4f5c\u6d41\u7a0b\u987a\u5e8f\u5168\u8bb2 + EEPROM\u518d\u5b9e\u73b0 - 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