{"id":104249,"date":"2026-09-12T08:25:12","date_gmt":"2026-09-12T00:25:12","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/104249.html"},"modified":"2026-09-12T08:25:12","modified_gmt":"2026-09-12T00:25:12","slug":"%e9%a3%9e%e6%8e%a7%e4%b8%bb%e6%8e%a7%e6%9c%80%e5%b0%8f%e7%b3%bb%e7%bb%9f%e7%94%b5%e8%b7%af","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/104249.html","title":{"rendered":"\u98de\u63a7\u4e3b\u63a7\u6700\u5c0f\u7cfb\u7edf\u7535\u8def"},"content":{"rendered":"
\u4e00\u3001\u539f\u7406<\/h6>\n
1\u3001\u4f9b\u7535\u90e8\u5206<\/h6>\n

\u4ee5\u4e0b\u4e3a\u5b98\u65b9\u624b\u518c（\u89c4\u683c\u4e66 PDF \u5728\u7ebf\u67e5\u770b – ICSpec）\u4e2d\u7684\u5168\u90e8\u4f9b\u7535\u90e8\u5206\u3002<\/p>\n

\"\"\"\"<\/p>\n

\u56fe\u4e2d\u6240\u6709\u7535\u6e90\u5f15\u811a<\/p>\n

VDD（5\u4e2a）：\u6570\u5b57\u7535\u6e90\u3002\u6240\u6709VDD\u63a53.3V\u7a33\u538b\u6a21\u5757\u8fc7\u6765\u76843.3V，\u548c\u5b98\u65b9\u624b\u518c\u4e2d\u4e00\u81f4，\u6bcf\u4e2aVDD\u5f15\u811a，\u5355\u72ec\u5f15\u4e00\u4e2a100nF\u7535\u5bb9\u63a5\u5730\u8fdb\u884c\u9ad8\u9891\u6ee4\u6ce2\u3002\u6574\u4e2a\u7535\u6e90\u9700\u8981\u4e00\u4e2a4.7uF\u7535\u5bb9\u8fdb\u884c\u50a8\u80fd\u548c\u7a33\u538b\u3002 VDDA（1\u4e2a）：\u6a21\u62df\u7535\u6e90\u3002\u76f4\u63a5\u63a5\u63a53.3V\u7a33\u538b\u6a21\u5757\u8fc7\u6765\u76843.3V，\u6ca1\u6709\u548c\u6570\u5b57\u7535\u6e90\u9694\u79bb，\u540c\u6837\u5f15\u4e00\u4e2a100nF\u7535\u5bb9\u63a5\u5730\u8fdb\u884c\u9ad8\u9891\u6ee4\u6ce2\u3002 VREF+（1\u4e2a）：\u6a21\u62df\u53c2\u8003\u7535\u6e90\u3002\u76f4\u63a5\u63a5\u63a53.3V\u7a33\u538b\u6a21\u5757\u8fc7\u6765\u76843.3V，\u548cVDDA\u5171\u7528\u4e00\u4e2a\u6ee4\u6ce2\u7535\u5bb9\u3002 VCAP（2\u4e2a）：\u5185\u90e8\u6838\u5fc3LDO\u3002\u548c\u5b98\u65b9\u624b\u518c\u4e2d\u63a8\u8350\u7684\u4e00\u81f4，\u4e24\u4e2aVCAP\u5f15\u811a\u5404\u81ea\u901a\u8fc7\u4e00\u4e2a2.2uF\u7535\u5bb9\u63a5\u5730\u3002 VSS：\u6570\u5b57\u5730\u3002\u6240\u6709\u7684VSS\u76f4\u63a5\u63a5GND； VDDA：\u6a21\u62df\u5730\u3002<\/p>\n

\u7535\u5bb9\u4e0e\u5f15\u811a\u5206\u914d\u5173\u7cfb\u5982\u4e0b：<\/p>\n\n\n\u4f4d\u53f7\u5bb9\u503c\u5bf9\u5e94\u5f15\u811a\u529f\u80fd\/\u4f5c\u7528<\/tr>\n\n\n\n\n\n\n\n\n\n
C1<\/td>\n100nF<\/td>\nPin75 (VDD)<\/td>\n\u9ad8\u9891\u6ee4\u6ce2<\/td>\n<\/tr>\n
C2<\/td>\n100nF<\/td>\nPin11\/20 (VDD\/VREF+)<\/td>\n\u9ad8\u9891\u6ee4\u6ce2<\/td>\n<\/tr>\n
C3<\/td>\n100nF<\/td>\nPin50 (VDD)<\/td>\n\u9ad8\u9891\u6ee4\u6ce2<\/td>\n<\/tr>\n
C4<\/td>\n100nF<\/td>\nPin20\/21 (VREF+\/VDDA)<\/td>\n\u9ad8\u9891\u6ee4\u6ce2<\/td>\n<\/tr>\n
C5<\/td>\n100nF<\/td>\nPin21\/27 (VDDA\/VDD)<\/td>\n\u9ad8\u9891\u6ee4\u6ce2<\/td>\n<\/tr>\n
C6<\/td>\n4.7uF<\/td>\nPin11\/20\/21 (VDD\/VDDA)<\/td>\n\u50a8\u80fd\u548c\u4f4e\u9891\u6ee4\u6ce2<\/td>\n<\/tr>\n
C8<\/td>\n1uF<\/td>\nPin11\/20 (VDD)<\/td>\n\u50a8\u80fd\u548c\u4e2d\u9891\u6ee4\u6ce2<\/td>\n<\/tr>\n
C9<\/td>\n100nF<\/td>\nPin14 (NRST)<\/td>\n\u9ad8\u9891\u6ee4\u6ce2<\/td>\n<\/tr>\n
C10\/C11<\/td>\n2.2uF<\/td>\nPin48\/73 (VCAP1\/VCAP2)<\/td>\n\u7a33\u538b（\u5185\u90e8LDO）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/h6>\n
2\u3001\u65f6\u949f\u90e8\u5206<\/h6>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6676\u632f\u63a5\u5728Pin12（PH0-OSC_IN）\u548cPin13（PH1-OSC_OUT）\u4e4b\u95f4，\u8fd9\u4e2a\u6676\u632f\u5185\u7f6e\u4e86\u8d77\u632f\u7535\u5bb9\u7684，\u6240\u4ee5\u4e0d\u9700\u8981\u5916\u63a5\u8d77\u632f\u7535\u5bb9\u3002<\/p>\n

3\u3001\u590d\u4f4d\u90e8\u5206<\/h6>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0NRST\u00a0\u7684\u5168\u79f0\u662f\u00a0Negative Reset（\u4f4e\u7535\u5e73\u590d\u4f4d）\u3002\u521a\u4e0a\u7535\u7684\u77ac\u95f4，C9\u7535\u5bb9\u65e0\u7535，\u4e24\u7aef\u7535\u538b\u4e0d\u80fd\u7a81\u53d8，\u76f8\u5f53\u4e8e\u7535\u5bb9\u77ed\u8def，NRST\u63a5\u5730，\u76f4\u63a5\u89e6\u53d1\u590d\u4f4d，\u968f\u540e\u7535\u5bb9\u901a\u8fc7\u82af\u7247\u5185\u90e8\u4e0a\u62c9\u7535\u963b\u5145\u7535，\u7535\u538b\u5347\u5230\u9608\u503c\u540e，\u82af\u7247\u9000\u51fa\u590d\u4f4d，\u5f00\u59cb\u6b63\u5e38\u8fd0\u884c\u3002\u6ca1\u6709\u5916\u90e8\u6309\u94ae\u624b\u52a8\u590d\u4f4d\u3002<\/p>\n

4\u3001\u4e0b\u8f7d\u90e8\u5206<\/h6>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u652f\u6301USB – TypeC\u3001SWD\u4e0b\u8f7d\u3002\u5176\u4e2dSWD\u4f7f\u7528\u5f15\u811aPin72（SWD_SWDIO）\u548cPin76（SWD_SWCLK）\u8fdb\u884c\u4e0b\u8f7d\u3002<\/p>\n

5\u3001\u542f\u52a8\u6a21\u5f0f\u90e8\u5206<\/h6>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0BOOT0 = 0（\u6b63\u5e38\u6a21\u5f0f）：\u5373\u672a\u6309\u4e0b\u6309\u94ae，BOOT0\u5f15\u811a\u901a\u8fc7\u4e00\u4e2a10K\u7535\u963b\u4e0b\u62c9\u63a5\u5730，\u6b64\u65f6\u5f15\u811a\u4e3a\u4f4e\u7535\u5e73，\u82af\u7247\u4ece\u4e3b\u95ea\u5b58（Flash）\u542f\u52a8\u5e76\u6b63\u5e38\u8fd0\u884c\u7a0b\u5e8f；<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 BOOT0 = 1（\u5237\u673a\u6a21\u5f0f）：\u6309\u4e0b\u6309\u94ae，BOOT0\u5f15\u811a\u76f4\u63a5\u63a5VDD，\u6b64\u65f6\u5f15\u811a\u4e3a\u9ad8\u7535\u5e73，\u82af\u7247\u4ece\u7cfb\u7edf\u5b58\u50a8\u5668（System Memory）\u542f\u52a8，\u8fd0\u884c\u5b98\u65b9\u7684\u70e7\u5f55\u5de5\u5177（ISP Bootloader），\u7528\u6237\u6b64\u65f6\u53ef\u4ee5\u901a\u8fc7\u00a0USB – TypeC\u4e3a\u82af\u7247\u5237\u5165\u65b0\u56fa\u4ef6\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u6ce8\u610f\u4e8b\u9879<\/h6>\n
1\u3001VDD\u8865\u5145<\/h6>\n

1\u3001\u6838\u5fc3\u57df<\/p>\n

    \n
  • \n

    VDDLDO：\u5185\u90e8\u6838\u5fc3\u7a33\u538b\u5668\u7684\u7535\u6e90\u8f93\u5165，\u901a\u5e38\u4e0eVDD\u5171\u75283.3V，\u5728\u82af\u7247\u5185\u90e8\u81ea\u5df1\u964d\u538b\u5230\u00a01.2V\u5de6\u53f3（Vcore），\u4e13\u95e8\u7ed9CPU\u548cRAM\u4f9b\u7535\u3002<\/p>\n<\/li>\n

  • \n

    VCAP1 \/ VCAP2：\u5185\u90e8\u6838\u5fc3LDO\u7684\u8f93\u51fa\u5f15\u811a\u3002\u5fc5\u987b\u5916\u63a52.2\u03bcF\u7535\u5bb9\u5230\u5730，\u7528\u4e8e\u7a33\u5b9a\u5185\u90e8 Vcore（\u6838\u5fc3\u7535\u538b）\u3002\u8be6\u7ec6\u6765\u8bf4，\u5916\u63a5\u7535\u5bb9\u8d77\u2460\u6ee4\u6ce2；\u2461CPU\u7684\u77ac\u6001\u7535\u6d41\u8865\u7ed9（\u9632\u6b62\u5185\u90e8\u7a33\u538b\u8f93\u51fa\u7535\u538b\u88ab\u62c9\u4f4e）；\u2462\u5185\u90e8LDO\u95ed\u73af\u63a7\u5236\u7cfb\u7edf\u7684\u5916\u7f6e\u73af\u8def\u8865\u507f\u3002<\/p>\n<\/li>\n<\/ul>\n

    2\u3001\u5907\u4efd\u57df\u00a0<\/p>\n

      \n
    • \n

      VBAT：\u5907\u4efd\u7535\u6c60\u7535\u6e90\u8f93\u5165（1.2V~3.6V），\u7528\u4e8e\u5728VDD\u6389\u7535\u65f6\u7ef4\u6301RTC\u548c\u5907\u4efd\u5bc4\u5b58\u5668\u3002<\/p>\n<\/li>\n<\/ul>\n

      3\u3001\u6a21\u62df\u57df<\/p>\n

        \n
      • \n

        VDDA ：\u6a21\u62df\u7535\u6e90\u8f93\u5165，\u7ed9ADC\u3001DAC\u7b49\u4f9b\u7535\u3002<\/p>\n<\/li>\n

      • \n

        VREF+：\u53c2\u8003\u7535\u538b\u8f93\u5165\u3002ADC \u662f\u628a\u8fde\u7eed\u7684\u6a21\u62df\u7535\u538b（\u6bd4\u5982\u7535\u6c60\u7535\u538b）\u8f6c\u6362\u6210\u79bb\u6563\u7684\u6570\u5b57\u91cf（\u6bd4\u59820~4095）\u3002VREF+ \u5b9a\u4e49\u4e86\u8f6c\u6362\u7684\u6ee1\u91cf\u7a0b\u4e0a\u9650\u3002\u4f8b\u5982，VREF+ = 3.3V \u65f6，\u6570\u5b57 4095 \u5bf9\u5e94 3.3V，\u6b64\u65f6\u5982\u679c\u5f15\u811a\u91c7\u96c6\u5230\u7535\u538b\u4e3a1.65V，\u90a3\u6b64\u65f6\u8ba1\u7b97\u51fa\u7684\u503c\u5c31\u662f（1.65\/3.3）*4096=2048.<\/p>\n<\/li>\n<\/ul>\n

        4\u3001VDD\u57df<\/p>\n

          \n
        • \n

          VDD：\u4e3b\u6570\u5b57\u7535\u6e90\u8f93\u5165，\u901a\u5e38\u4e3a3.3V，\u7ed9\u6240\u6709I\/O\u548cPLL\u7b49\u4f9b\u7535\u3002\u5982\u901a\u8fc7I\/O\u53e3\u70b9\u4eaeLED\u7684\u7535\u5c31\u7531\u8be5\u5f15\u811a\u63d0\u4f9b\u3002<\/p>\n<\/li>\n<\/ul>\n

          5\u3001USB<\/p>\n

            \n
          • \n

            VDD33USB：\u901a\u8fc7\u5916\u63a53.3V\u4f9b\u7535，\u6b64\u65f6\u5185\u90e8USB\u7a33\u538b\u5668\u7981\u7528（VDD50USB\u76f4\u63a5\u63a5\u5730），\u7ed9USB\u901a\u4fe1\u4f9b\u7535；<\/p>\n<\/li>\n

          • \n

            VDD50USB：\u901a\u8fc7\u5916\u63a55V\u4f9b\u7535，\u5185\u90e8USB\u7a33\u538b\u5668\u7a33\u538b\u81f33.3V（VDD33USB\u5916\u63a5\u4e00\u4e2a\u00a01\u03bcF\u7535\u5bb9\u5230\u5730\u00a0\u8fdb\u884c\u7a33\u538b\u548c\u6ee4\u6ce2），\u7528\u4e8e\u7ed9USB\u901a\u4fe1\u4f9b\u7535\u3002<\/p>\n<\/li>\n<\/ul>\n

            5\u3001VSS<\/p>\n

              \n
            • \n

              VSS：VSS\u4e3a\u4e0a\u8ff0\u6240\u6709\u6a21\u5757\u7684\u5171\u7528\u5730，\u867d\u7136\u8d70\u7ebf\u8def\u5f84\u4e0a\u9694\u5f00\u4e86\u6a21\u62df\/\u6570\u5b57\u7b49，\u4f46\u6700\u540e\u90fd\u4f1a\u56de\u5230VSS\u3002<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

              \u4e00\u3001\u539f\u7406
              \n1\u3001\u4f9b\u7535\u90e8\u5206
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