{"id":98512,"date":"2026-09-01T01:41:15","date_gmt":"2026-08-31T17:41:15","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/98512.html"},"modified":"2026-09-01T01:41:15","modified_gmt":"2026-08-31T17:41:15","slug":"mcu%e5%bc%95%e8%84%9a","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/98512.html","title":{"rendered":"MCU\u5f15\u811a"},"content":{"rendered":"<\/p>\n<h4>MCU\u5f15\u811a<\/h4>\n<ul>\n<li>\u524d\u8a00<\/li>\n<li>\u4e00\u3001\u5f15\u811a\u7684\u6982\u5ff5<\/li>\n<li>\n<ul>\n<li>1.\u4ec0\u4e48\u662f\u5f15\u811a<\/li>\n<li>2.\u5f15\u811a\u5e03\u5c40<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001\u5f15\u811a\u7684\u529f\u80fd<\/li>\n<li>\n<ul>\n<li>1. \u7279\u6b8a\u529f\u80fd\u5f15\u811a<\/li>\n<li>\n<ul>\n<li>1.1 VDD(\u63a5\u6b63\u6781)\u4e0eVSS(\u63a5\u5730)<\/li>\n<li>1.2 NRST\u590d\u4f4d\u5f15\u811a<\/li>\n<li>1.3 VBAT: \u5907\u7528\u7535\u6c60\u5f15\u811a<\/li>\n<li>1.4 BOOT0: \u542f\u52a8\u6a21\u5f0f\u9009\u62e9\u5f15\u811a<\/li>\n<li>1.4 NRST: \u590d\u4f4d\u5f15\u811a VS BOOT0: \u542f\u52a8\u6a21\u5f0f\u9009\u62e9\u5f15\u811a<\/li>\n<\/ul>\n<\/li>\n<li>2.\u666e\u901a\u5f15\u811a<\/li>\n<\/ul>\n<\/li>\n<li>\u603b\u7ed3<\/li>\n<\/ul>\n<hr \/>\n<h2>\u524d\u8a00<\/h2>\n<p>\u4e0a\u4e00\u7ae0\u8282\u5d4c\u5165\u5f0f\u5f00\u7aef,\u5df2\u7ecf\u7ed9\u8001\u94c1\u4ecb\u7ecd\u4e86STM32F103ZET6\u8fd9\u6b3eMCU\u7684\u9009\u578b\u4ee5\u53ca\u547d\u540d\u89c4\u5219. \u8fd9\u7bc7\u6587\u7ae0, \u4e3b\u8981\u7ed9\u8001\u94c1\u4ecb\u7ecd\u4e00\u4e0bSTM32F103ZET6\u7684\u5f15\u811a\u6982\u5ff5.<\/p>\n<hr \/>\n<h2>\u4e00\u3001\u5f15\u811a\u7684\u6982\u5ff5<\/h2>\n<h3>1.\u4ec0\u4e48\u662f\u5f15\u811a<\/h3>\n<p>\u5f15\u811a(Pin): \u5c31\u662f\u4eceMCU\u5185\u90e8\u5f15\u51fa\u4e0e\u5916\u90e8\u7535\u8def\u76f8\u8fde. \u6240\u6709\u7684\u5f15\u811a\u5c31\u6784\u6210\u4e86\u8fd9\u4e2aMCU\u7684\u63a5\u53e3.<\/p>\n<h3>2.\u5f15\u811a\u5e03\u5c40<\/h3>\n<p><font color=\"Red\">\u5f15\u811a\u5e03\u5c40\u5c5e\u4e8e\u786c\u4ef6&#xff0c;\u90a3\u4e48\u5c31\u2f00\u5b9a\u80fd\u5728STM32F103xE\u300a\u6570\u636e\u624b\u518c\u300b\u4e2d\u627e\u5230\u5f15\u811a\u76f8\u5173\u5185\u5bb9\u3002<\/font><\/p>\n<p>\u6570\u636e\u624b\u518c\u4e2d\u7684LQFP\u5c01\u88c5144\u4e2a\u5f15\u811a\u7684\u5f15\u811a\u5e03\u5c40\u56fe\u5982\u4e0b:<img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260831174110-6a95bcb6c0315.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u4e0a\u9762\u8fd9\u4e2a\u56fe\u6709\u4e9b\u62bd\u8c61, \u6211\u4f1a\u628a\u5f15\u811a\u5e03\u5c40\u4e0e\u771f\u5b9e\u7684STM32F103ZET6\u7684MCU\u8054\u7cfb\u8d77\u6765.<\/p>\n<p>\u6211\u4eec\u901a\u8fc7STM32F103ZET6\u82af\u7247\u4e0a\u7684\u6211\u5c0f\u9ed1\u70b9\u627e\u52301\u53f7\u5f15\u811a. \u56db\u6761\u8fb9\u7684\u5f15\u811a\u7f16\u53f7\u9006\u65f6\u9488\u6392\u5217\u5c31\u662f1-36, 37-72, 73-108, 109-144. <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260831174111-6a95bcb70afe0.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260831174111-6a95bcb7472aa.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h2>\u4e8c\u3001\u5f15\u811a\u7684\u529f\u80fd<\/h2>\n<h3>1. \u7279\u6b8a\u529f\u80fd\u5f15\u811a<\/h3>\n<p>\u529f\u80fd\u7531MCU\u82af\u7247\u786c\u4ef6\u6c38\u4e45\u56fa\u5b9a&#xff0c;\u4e0d\u53ef\u901a\u8fc7\u8f6f\u4ef6\u66f4\u6539\u3002\u5fc5\u987b\u6309\u7167\u6570\u636e\u624b\u518c\u89c4\u5b9a\u7684\u7528\u9014\u6b63\u786e\u8fde\u63a5&#xff08;\u5982\u63a5\u7535\u6e90\u3001\u63a5\u5730\u5730\u3001\u65f6\u949f\u3001\u590d\u4f4d&#xff09;&#xff0c;MCU\u624d\u80fd\u6b63\u5e38\u542f\u52a8\u548c\u5de5\u4f5c<\/p>\n<h4>1.1 VDD(\u63a5\u6b63\u6781)\u4e0eVSS(\u63a5\u5730)<\/h4>\n<p>VDD: Voltage Drain Drain, \u5728 STM32F103 \u7cfb\u5217\u4e0a&#xff0c;\u901a\u5e38\u8fde\u63a5 &#043;3.3V. VSS: Voltage Source Source \u5728 STM32F103 \u7cfb\u5217\u4e0a&#xff0c;\u8fde\u63a5\u5230\u7535\u8def\u7684 GND &#xff08;\u5730\u7ebf&#xff09;.<\/p>\n<h4>1.2 NRST\u590d\u4f4d\u5f15\u811a<\/h4>\n<p><font color=\"Red\">\u590d\u4f4d\u5f15\u811a: (Reset) \u6307\u7684\u662f\u8ba9\u5355\u7247\u673a\u5f3a\u5236\u56de\u5f52\u521d\u59cb\u72b6\u6001, \u76f8\u5f53\u4e8e \u201c\u91cd\u542f\u201d.<\/font><\/p>\n<p>NRST\u5168\u79f0: Negative-Reset. N\u4ee3\u8868 Negative \u6216 Not&#xff0c;<font color=\"Red\">\u5f3a\u8c03\u8be5\u5f15\u811a\u5728\u4f4e\u7535\u5e73(0V) \u65f6\u89e6\u53d1\u590d\u4f4d\u3002<\/font> \u5982\u679c\u5199\u6210 RST\u6216RESET, \u901a\u5e38\u53ef\u80fd\u662f\u9ad8\u7535\u5e73\u6709\u6548; \u5e26 N \u524d\u7f00\u5219\u660e\u786e\u662f\u4f4e\u7535\u5e73\u6709\u6548.<\/p>\n<p><font color=\"Blue\">\u5982\u679c\u6309\u4e0b\u590d\u4f4d\u6309\u952e, \u5f00\u5173\u95ed\u5408,\u7535\u8def\u5bfc\u901a, \u5355\u7247\u673a\u91cd\u542f. \u6b64\u65f6NRST\u5f15\u811a\u63a5\u5730,\u663e\u793a\u4e3a\u4f4e\u7535\u5e73. \u5982\u679c\u6ca1\u6709\u6309\u4e0b\u590d\u4f4d\u6309\u952e, \u5f00\u5173\u65ad\u5f00. \u5355\u7247\u673a\u6b63\u5e38\u8fd0\u884c. \u6b64\u65f6NRST\u5f15\u811a\u663e\u793a\u4e3a\u9ad8\u7535\u538b.<\/font><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260831174111-6a95bcb760196.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>1.3 VBAT: \u5907\u7528\u7535\u6c60\u5f15\u811a<\/h4>\n<p>\u672a\u6765\u6211\u4eec\u7684\u5f00\u53d1\u677f\u9664\u4e86VDD\u4f9b\u7535, \u8fd8\u6709VBAT\u5907\u7528\u4f9b\u7535.<\/p>\n<p><font color=\"Red\">\u5f53\u6389\u7535(VDD\u5f02\u5e38)\u65f6, VBAT\u81ea\u52a8\u4e3aMCU\u4f9b\u7535(\u4e3b\u8981\u662fRTC(\u5b9e\u65f6\u65f6\u949f)\u548c\u5907\u4efd\u5bc4\u5b58\u5668)\u786e\u4fdd\u65f6\u95f4\u4e0d\u4e22\u5931\u3001\u6570\u636e\u4e0d\u4e22\u5931, \u4f46 MCU \u6574\u4f53\u505c\u6b62\u8fd0\u884c.\u8fd9\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u53ef\u9760\u6027.<\/font><\/p>\n<p>\u4e3e\u4e2a\u4f8b\u5b50: \u5c31\u50cf\u6211\u4eec\u7684\u7535\u8111\u62d4\u6389\u7535\u6e90\u653e\u4e24\u5929\u4e4b\u540e\u518d\u6253\u5f00, \u70b9\u8111\u663e\u793a\u7684\u65f6\u95f4\u4f9d\u7136\u4e0d\u4f1a\u9519\u4e71. \u8fd9\u90fd\u662f\u56e0\u4e3a\u65ad\u5f00\u7535\u6e90\u540e,\u7535\u8111\u5185\u90e8\u4e5f\u6709\u5907\u7528\u7535\u6c60\u4ec5\u7ef4\u6301 BIOS \u65f6\u949f\u548c\u8bbe\u7f6e. \u7535\u8111\u672c\u8eab\u4e0d\u80fd\u8fd0\u884c, \u4f46\u4e0b\u6b21\u5f00\u673a\u65f6\u95f4\u8fd8\u662f\u51c6\u7684.<\/p>\n<p>VBAT\u7684\u5b9e\u73b0\u4e3b\u8981\u662f\u4ee5\u4f9d\u8d56\u5916\u63a5\u7684\u7ebd\u6263\u7535\u6c60,\u8be6\u60c5\u53ef\u89c1\u7535\u8def\u56fe: \u89e3\u91ca: \u8fd9\u4e2a\u7535\u8def\u91cc\u6709\u4e24\u4e2a\u7535\u6e90, \u4e00\u4e2a\u65f6VDD(3.3V), \u4e00\u4e2a\u662f\u7ebd\u6263\u7535\u6c60(3V). \u4ed6\u4eec\u5206\u88ab\u94fe\u63a5\u5728\u8096\u7279\u57fa\u4e8c\u6781\u7ba1\u4e0a(\u9633\u6781\u5230\u9634\u6781\u7684\u5bfc\u901a\u7535\u538b\u7ea6\u4e3a0.15V-0.45V). \u4e0b\u9762\u4ee50.4V\u5bfc\u901a\u7535\u538b\u4e3a\u4f8b.<\/p>\n<p>\u6b63\u5e38\u4f9b\u7535\u4e0b: VDD3.3V\u4f9b\u7535, \u901a\u8fc7U5\u8096\u7279\u57fa\u4e8c\u6781\u7ba1\u540e, \u7535\u538b\u7ea6\u4e3a2.9V. \u6b64\u65f6\u7ebd\u6263\u7535\u6c60\u4e3a3V, \u6240\u4ee5\u7ebd\u6263\u7535\u6c60\u8fde\u63a5\u7684\u7684\u8096\u7279\u57fa\u4e8c\u6781\u7ba1BAT54C\u6ca1\u6709\u5230\u5bfc\u901a. VDD\u5b8c\u6210\u5bf9VBAT\u5f15\u811a\u7684\u4f9b\u7535,\u5355\u7247\u673a\u6b63\u5e38\u5de5\u4f5c.<\/p>\n<p>\u6389\u7535\u540e: VDD3.3V\u4f9b\u7535\u6d88\u5931\u4e86, \u6b64\u65f6\u7ebd\u6263\u7535\u6c60(3V)\u4f9b\u7535, \u7279\u57fa\u4e8c\u6781\u7ba1BAT54C\u5bfc\u901a, \u7ebd\u6263\u7535\u6c60\u5b9e\u73b0\u4e86\u5bf9VBAT\u5f15\u811a\u7684\u5907\u7528\u4f9b\u7535. \u4ee5\u786e\u4fdd\u6389\u7535\u540eMCU\u65f6\u95f4\u4e0d\u4e22\u5931\u3001\u6570\u636e\u4e0d\u4e22\u5931, \u4f46 MCU \u6574\u4f53\u505c\u6b62\u8fd0\u884c.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260831174111-6a95bcb770fe6.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>1.4 BOOT0: \u542f\u52a8\u6a21\u5f0f\u9009\u62e9\u5f15\u811a<\/h4>\n<p>BOOT0\u6709\u4e24\u79cd\u72b6\u6001:<\/p>\n<li><font color=\"Red\">\u63a5GND: \u6b64\u65f6MCU\u4e00\u65e6\u88abReset, \u90a3\u4e48MCU\u6267\u884c\u7684\u5c31\u662f\u6211\u70e7\u5199\u8fdbMCU\u7684\u7a0b\u5e8f.<\/font><\/li>\n<li><font color=\"Red\">\u63a53.3V: \u6b64\u65f6MCU\u4e00\u65e6\u88abReset, \u8fdb\u5165\u5237\u673a\u6a21\u5f0f, \u6267\u884c\u610f\u6cd5\u534a\u5bfc\u4f53\u5728\u82af\u7247\u5185\u90e8\u63d0\u4f9b\u7684Bootloader\u4ee3\u7801. \u53ef\u4ee5\u7528\u5b83\u8fdb\u884c\u5f3a\u5236\u70e7\u5199.<\/font><\/li>\n<p>\u53ef\u4ee5\u9884\u89c1,\u5c06\u6765\u5982\u679c\u6211\u4eec\u5199\u7684\u7a0b\u5e8f\u65e0\u6cd5\u70e7\u5f55\u8fdb\u5165MCU\u5185\u90e8, \u6211\u4eec\u53ef\u4ee5\u628aBOOT0\u8bbe\u7f6e\u4e3a3.3V, reset\u4e00\u4e0b\u4e4b\u540e, \u8fdb\u5165\u5237\u673a\u6a21\u5f0f, \u5f3a\u5236\u628a\u7a0b\u5e8f\u70e7\u5199\u5230\u677f\u5b50\u91cc.<\/p>\n<p>BOOT0\u5f15\u811a\u7535\u8def\u539f\u7406\u56fe\u5982\u4e0b: \u6211\u4eec\u5b89\u88c5\u4e86\u4e00\u4e2a\u5782\u76f4\u6ed1\u52a8\u5f00\u5173, \u53ef\u4ee5\u9009\u62e9BOOT0\u662f\u63a5GND\u8fd8\u662f3.3V. \u53ef\u4ee5\u624b\u52a8\u8c03\u6574\u5355\u7247\u673a\u590d\u4f4d\u91cd\u542f\u540e\u8981\u6267\u884c\u7684\u7a0b\u5e8f. <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260831174111-6a95bcb7c86e7.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>1.4 NRST: \u590d\u4f4d\u5f15\u811a VS BOOT0: \u542f\u52a8\u6a21\u5f0f\u9009\u62e9\u5f15\u811a<\/h4>\n<p>\u8fd9\u4e24\u4e2a\u5f15\u811a\u7684\u529f\u80fd\u4e0d\u8981\u641e\u6df7\u6dc6\u4e86:<\/p>\n<p><font color=\"Red\">\u590d\u4f4d\u5f15\u811a: (Reset) \u6307\u7684\u662f\u6309\u4e0b\u590d\u4f4d\u6309\u94ae\u540e\u8ba9\u5355\u7247\u673a\u5f3a\u5236\u56de\u5f52\u521d\u59cb\u72b6\u6001, \u76f8\u5f53\u4e8e \u201c\u91cd\u542f\u201d \u5355\u7247\u673a.<\/font><\/p>\n<p><font color=\"Red\">BOOT0\u5f15\u811a: \u6307\u7684\u662f\u6211\u4eec\u6309\u4e0b\u590d\u4f4d\u6309\u94ae\u540e,\u5355\u7247\u673a\u91cd\u542f. \u91cd\u542f\u540eBOOT0\u51b3\u5b9a\u9009\u62e9\u8fd0\u884c\u54ea\u4e9b\u4ee3\u7801. \u7a76\u7adf\u662f\u8fd0\u884c\u6211\u4eec\u70e7\u5f55\u7684\u4ee3\u7801, \u8fd8\u662fMCU\u5185\u90e8\u7684bootloader\u4ee3\u7801.<\/font><\/p>\n<h3>2.\u666e\u901a\u5f15\u811a<\/h3>\n<p>\u51fa\u53bb32\u4e2a\u7279\u6b8a\u5f15\u811a\u5916,\u5269\u4f59\u7684112\u4e2a\u5c31\u662f\u666e\u901a\u5f15\u811a.<\/p>\n<p>\u666e\u901a\u5f15\u811a\u662fMCU \u7684\u201c\u53ef\u7f16\u7a0b\u63a5\u53e3\u201d\u3002\u5176\u529f\u80fd\u5b8c\u5168\u7531\u4f60\u7684\u8f6f\u4ef6\u51b3\u5b9a\u3002\u4f60\u53ef\u4ee5\u52a8\u6001\u5730\u5c06\u5176\u914d\u7f6e\u4e3a\u8f93\u5165&#xff08;\u8bfb\u53d6\u6309\u952e&#xff09;\u3001\u8f93\u51fa&#xff08;\u63a7\u5236 LED &#xff09;\u6216\u590d\u7528\u4e3a UART\u3001I2C\u3001SPI\u3001PWM\u3001ADC \u7b49\u7279\u5b9a\u5916\u8bbe\u529f\u80fd\u3002<\/p>\n<li>\u4ece\u7269\u7406\u5f15\u811a\u5e03\u5c40\u6765\u770b: 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