单片机51系列的20管脚的是什么型号 at89c51单片机第20脚是什么引脚
51\u5355\u7247\u673a \u578b\u53f78031/8051/8751\u662fIntel\u516c\u53f8\u65e9\u671f\u7684\u4ea7\u54c1\u3002
8031\u7684\u7279\u70b9
8031\u7247\u5185\u4e0d\u5e26\u7a0b\u5e8f\u5b58\u50a8\u5668ROM\uff0c\u4f7f\u7528\u65f6\u7528\u6237\u9700\u5916\u63a5\u7a0b\u5e8f\u5b58\u50a8\u5668\u548c\u4e00\u7247\u903b\u8f91\u7535\u8def373\uff0c\u5916\u63a5\u7684\u7a0b\u5e8f\u5b58\u50a8\u5668\u591a\u4e3aEPROM\u76842764\u7cfb\u5217\u3002\u7528\u6237\u82e5\u60f3\u5bf9\u5199\u5165\u5230EPROM\u4e2d\u7684\u7a0b\u5e8f\u8fdb\u884c\u4fee\u6539\uff0c\u5fc5\u987b\u5148\u7528\u4e00\u79cd\u7279\u6b8a\u7684\u7d2b\u5916\u7ebf\u706f\u5c06\u5176\u7167\u5c04\u64e6\u9664\uff0c\u4e4b\u540e\u518d\u53ef\u5199\u5165\u3002\u5199\u5165\u5230\u5916\u63a5\u7a0b\u5e8f\u5b58\u50a8\u5668\u7684\u7a0b\u5e8f\u4ee3\u7801\u6ca1\u6709\u4ec0\u4e48\u4fdd\u5bc6\u6027\u53ef\u8a00\u3002
8051\u7684\u7279\u70b9
8051\u7247\u5185\u67094k ROM\uff0c\u65e0\u987b\u5916\u63a5\u5916\u5b58\u50a8\u5668\u548c373\uff0c\u66f4\u80fd\u4f53\u73b0\u201c\u5355\u7247\u201d\u7684\u7b80\u7ec3\u3002\u4f46\u662f\u4f60\u7f16\u7684\u7a0b\u5e8f\u4f60\u65e0\u6cd5\u70e7\u5199\u5230\u5176ROM\u4e2d\uff0c\u53ea\u6709\u5c06\u7a0b\u5e8f\u4ea4\u82af\u7247\u5382\u4ee3\u4f60\u70e7\u5199\uff0c\u5e76\u662f\u4e00\u6b21\u6027\u7684\uff0c\u4eca\u540e\u4f60\u548c\u82af\u7247\u5382\u90fd\u4e0d\u80fd\u6539\u5199\u5176\u5185\u5bb9\u3002
8751\u7684\u7279\u70b9
8751\u4e0e8051\u57fa\u672c\u4e00\u6837\uff0c\u4f468751\u7247\u5185\u67094k\u7684EPROM\uff0c\u7528\u6237\u53ef\u4ee5\u5c06\u81ea\u5df1\u7f16\u5199\u7684\u7a0b\u5e8f\u5199\u5165\u5355\u7247\u673a\u7684EPROM\u4e2d\u8fdb\u884c\u73b0\u573a\u5b9e\u9a8c\u4e0e\u5e94\u7528\uff0cEPROM\u7684\u6539\u5199\u540c\u6837\u9700\u8981\u7528\u7d2b\u5916\u7ebf\u706f\u7167\u5c04\u4e00\u5b9a\u65f6\u95f4\u64e6\u9664\u540e\u518d\u70e7\u5199\u3002
\u7531\u4e8e\u4e0a\u8ff0\u7c7b\u578b\u7684\u5355\u7247\u673a\u5e94\u7528\u7684\u65e9\uff0c\u5f71\u54cd\u5f88\u5927\uff0c\u5df2\u6210\u4e3a\u4e8b\u5b9e\u4e0a\u7684\u5de5\u4e1a\u6807\u51c6\u3002\u540e\u6765\u5f88\u591a\u82af\u7247\u5382\u5546\u4ee5\u5404\u79cd\u65b9\u5f0f\u4e0eIntel\u516c\u53f8\u5408\u4f5c\uff0c\u4e5f\u63a8\u51fa\u4e86\u540c\u7c7b\u578b\u7684\u5355\u7247\u673a\uff0c\u5982\u540c\u4e00\u79cd\u5355\u7247\u673a\u7684\u591a\u4e2a\u7248\u672c\u4e00\u6837\uff0c\u867d\u90fd\u5728\u4e0d\u65ad\u7684\u6539\u53d8\u5236\u9020\u5de5\u827a\uff0c\u4f46\u5185\u6838\u5374\u4e00\u6837\uff0c\u4e5f\u5c31\u662f\u8bf4\u8fd9\u7c7b\u5355\u7247\u673a\u6307\u4ee4\u7cfb\u7edf\u5b8c\u5168\u517c\u5bb9\uff0c\u7edd\u5927\u591a\u6570\u7ba1\u811a\u4e5f\u517c\u5bb9\uff1b\u5728\u4f7f\u7528\u4e0a\u57fa\u672c\u53ef\u4ee5\u76f4\u63a5\u4e92\u6362\u3002\u4eba\u4eec\u7edf\u79f0\u8fd9\u4e9b\u4e0e8051\u5185\u6838\u76f8\u540c\u7684\u5355\u7247\u673a\u4e3a\u201c51\u7cfb\u5217\u5355\u7247\u673a\u201d\u3002\u5bf9\u4e8e\u5b66\u4e60\u8005\u6765\u8bf4\uff0c\u5b66\u4e86\u5176\u4e2d\u4e00\u79cd\uff0c\u4fbf\u4f1a\u6240\u6709\u768451\u7cfb\u5217\u3002
AT89C51\u3001AT89S51\u7684\u7279\u70b9
\u5728\u4f17\u591a\u768451\u7cfb\u5217\u5355\u7247\u673a\u4e2d\uff0c\u8981\u7b97 ATMEL \u516c\u53f8\u7684AT89C51\u3001AT89S51\u66f4\u5b9e\u7528\uff0c\u56e0\u4ed6\u4e0d\u4f46\u548c8051\u6307\u4ee4\u3001\u7ba1\u811a\u5b8c\u5168\u517c\u5bb9\uff0c\u800c\u4e14\u5176\u7247\u5185\u76844K\u7a0b\u5e8f\u5b58\u50a8\u5668\u662fFLASH\u5de5\u827a\u7684\uff0c\u8fd9\u79cd\u5de5\u827a\u7684\u5b58\u50a8\u5668\u7528\u6237\u53ef\u4ee5\u7528\u7535\u7684\u65b9\u5f0f\u77ac\u95f4\u64e6\u9664\u3001\u6539\u5199\uff0c\u4e00\u822c\u4e13\u4e3a ATMEL AT89xx \u505a\u7684\u7f16\u7a0b\u5668\u5747\u5e26\u6709\u8fd9\u4e9b\u529f\u80fd\u3002\u663e\u800c\u6613\u89c1\uff0c\u8fd9\u79cd\u5355\u7247\u673a\u5bf9\u5f00\u53d1\u8bbe\u5907\u7684\u8981\u6c42\u5f88\u4f4e\uff0c\u5f00\u53d1\u65f6\u95f4\u4e5f\u5927\u5927\u7f29\u77ed\u3002\u5199\u5165\u5355\u7247\u673a\u5185\u7684\u7a0b\u5e8f\u8fd8\u53ef\u4ee5\u8fdb\u884c\u52a0\u5bc6\uff0c\u8fd9\u53c8\u5f88\u597d\u5730\u4fdd\u62a4\u4e86\u4f60\u7684\u52b3\u52a8\u6210\u679c\u3002\u518d\u7740\uff0cAT89C51\u3001AT89S51\u76ee\u524d\u7684\u552e\u4ef7\u6bd48031\u8fd8\u4f4e\uff0c\u5e02\u573a\u4f9b\u5e94\u4e5f\u5f88\u5145\u8db3\u3002
AT89S51\u300152\u662f2003\u5e74ATMEL\u63a8\u51fa\u7684\u65b0\u578b\u54c1\u79cd\uff0c\u9664\u4e86\u5b8c\u5168\u517c\u5bb98051\u5916\uff0c\u8fd8\u591a\u4e86ISP\u7f16\u7a0b\u548c\u770b\u95e8\u72d7\u529f\u80fd\u3002\u6211\u4eec\u4e5f\u4e13\u95e8\u4e3a\u8fd9\u79cd\u65b0\u7247\u8bbe\u8ba1\u4e86\u4e00\u6b3e \u7f16\u7a0b\u3001\u5b66\u4e60\u3001\u5b9e\u9a8c\u677f\u3002
AT89C2051\u3001AT89C1051\u7b49\u7684\u7279\u70b9
ATMEL\u516c\u53f8\u768451\u7cfb\u5217\u8fd8\u6709AT89C2051\u3001AT89C1051\u7b49\u54c1\u79cd\uff0c\u8fd9\u4e9b\u82af\u7247\u662f\u5728AT89C51\u7684\u57fa\u7840\u4e0a\u5c06\u4e00\u4e9b\u529f\u80fd\u7cbe\u7b80\u6389\u540e\u5f62\u6210\u7684\u7cbe\u7b80\u7248\u3002AT89C2051\u53d6\u6389\u4e86P0\u53e3\u548cP2\u53e3\uff0c\u5185\u90e8\u7684\u7a0b\u5e8fFLASH\u5b58\u50a8\u5668\u4e5f\u5c0f\u52302K\uff0c\u5c01\u88c5\u5f62\u5f0f\u4e5f\u753151\u7684P40\u811a\u6539\u4e3a20\u811a\uff0c\u76f8\u5e94\u7684\u4ef7\u683c\u4e5f\u4f4e\u4e00\u4e9b\uff0c\u7279\u522b\u9002\u5408\u5728\u4e00\u4e9b\u667a\u80fd\u73a9\u5177\uff0c\u624b\u6301\u4eea\u5668\u7b49\u7a0b\u5e8f\u4e0d\u5927\u7684\u7535\u8def\u73af\u5883\u4e0b\u5e94\u7528\uff1bAT89C1051\u57282051\u7684\u57fa\u7840\u4e0a\uff0c\u518d\u6b21\u7cbe\u7b80\u6389\u4e86\u4e32\u53e3\u529f\u80fd\u7b49\uff0c\u7a0b\u5e8f\u5b58\u50a8\u5668\u518d\u6b21\u51cf\u5c0f\u52301k\uff0c\u5f53\u7136\u4ef7\u683c\u4e5f\u66f4\u4f4e\u3002
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ATMEL\u768451\u30012051\u30011051\u5747\u6709\u591a\u79cd\u5c01\u88c5\uff0c\u5982AT89C(S)51\u6709PDIP\u3001PLCC\u548cPQFP/TQFP\u7b49\u5c01\u88c5\uff1b2051/1051\u6709PDIP\u548cSOIC\u5c01\u88c5\u7b49\u3002\u4e0b\u56fe\u662f\u90e8\u5206\u5c01\u88c5\u5b9e\u7269\u3002
\u7531\u4e8e51\u7cfb\u5217\u5355\u7247\u673a\u7684\u5185\u6838\u90fd\u4e00\u6837\uff0c\u6240\u4ee5\u572851\u5355\u7247\u673a\u6559\u6750\u65b9\u9762\u76ee\u524d\u4ecd\u7136\u6cbf\u7528Intel MCS 8051\u5355\u7247\u673a\u7684\u4e66\u7c4d\u3002\u5f00\u53d1\u8f6f\u4ef6\u548c\u5de5\u5177\u4e5f\u662f\u4e00\u6837\uff0c\u6211\u4eec\u7edf\u79f0\u4e3a8051\u5f00\u53d1\u7cfb\u7edf\u3001\u73af\u5883\u3001\u7b49\u7b49\uff0c\u5982\u6211\u4eec\u7f51\u7ad9\u4ecb\u7ecd\u7684\u6c47\u7f16\u7a0b\u5e8fASM51\u3001Keil C51\u3001MedWin \u7b49\u5747\u662f\u9488\u5bf98051\u5185\u6838\u5355\u7247\u673a\u7684\u5f00\u53d1\u8f6f\u4ef6\u3002
\u5355\u5bf9AT89C51\u3001AT89S51\u6765\u8bf4\uff0c\u5728\u5b9e\u9645\u7535\u8def\u4e2d\u53ef\u4ee5\u76f4\u63a5\u4e92\u63628051\\8751\uff0c\u66ff\u63628031\u53ea\u662f\u7b2c31\u811a\u6709\u533a\u522b\uff0c8031\u56e0\u5185\u90e8\u6ca1\u6709ROM\uff0c31\u811a\u9700\u63a5\u5730\uff08GND\uff09\uff0c\u5355\u7247\u673a\u5728\u542f\u52a8\u540e\u5c31\u5230\u5916\u9762\u7a0b\u5e8f\u5b58\u50a8\u5668\u8bfb\u53d6\u6307\u4ee4\uff1b\u800c8051/8751/89c51\u56e0\u5185\u90e8\u6709\u7a0b\u5e8f\u5b58\u50a8\u5668\uff0c31\u811a\u63a5\u9ad8\u7535\u5e73\uff08VCC\uff09\uff0c\u5355\u7247\u673a\u542f\u52a8\u540e\u76f4\u63a5\u5728\u5185\u90e8\u8bfb\u53d6\u6307\u4ee4\u3002\u4e5f\u5c31\u662f51\u82af\u7247\u768431\u811a\u63a7\u5236\u7740\u5355\u7247\u673a\u7a0b\u5e8f\u4ece\u5185\u90e8\u8bfb\u53d6\u8fd8\u662f\u4ece\u5916\u90e8\u8bfb\u53d6\uff0c31\u811a\u63a5\u7535\u6e90\uff0c\u7a0b\u5e8f\u4ece\u5185\u90e8\u8bfb\u53d6\uff0c31\u811a\u63a5\u5730\uff0c\u7a0b\u5e8f\u4ece\u5916\u90e8\u8bfb\u53d6\u3002\u5176\u4ed6\u65e0\u987b\u6539\u52a8\u3002\u53e6\u5916\uff0cAT89C51\u3001AT89s51\u66ff\u63628031\u540e\u56e0\u4e0d\u7528\u5916\u5b58\u50a8\u5668\uff0c\u4e0d\u5fc5\u5b89\u88c5\u539f\u7535\u8def\u7684\u5916\u5b58\u50a8\u5668\u548c373\u82af\u7247\u3002
89S51\u4e0e89C51\u7684\u533a\u522b
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\u3000
\u3000\u3000\u8fd9\u91cc\uff0c\u521d\u5b66\u8005\u8981\u6f84\u6e05\u5355\u7247\u673a\u5b9e\u9645\u4f7f\u7528\u65b9\u9762\u7684\u4e00\u4e2a\u4ea7\u54c1\u6982\u5ff5\uff0cMCS-51\u5355\u7247\u673a\u662f\u7f8e\u56fdINTE\u516c\u53f8\u4e8e1980\u5e74\u63a8\u51fa\u7684\u4ea7\u54c1\uff0c\u5178\u578b\u4ea7\u54c1\u6709 8031\uff08\u5185\u90e8\u6ca1\u6709\u7a0b\u5e8f\u5b58\u50a8\u5668\uff0c\u5b9e\u9645\u4f7f\u7528\u65b9\u9762\u5df2\u7ecf\u88ab\u5e02\u573a\u6dd8\u6c70\uff09\u30018051\uff08\u82af\u7247\u91c7\u7528HMOS\uff0c\u529f\u8017\u662f630mW\uff0c\u662f89C51\u76845\u500d\uff0c\u5b9e\u9645\u4f7f\u7528\u65b9\u9762\u5df2\u7ecf\u88ab\u5e02\u573a\u6dd8\u6c70\uff09\u548c8751\u7b49\u901a\u7528\u4ea7\u54c1\uff0c\u4e00\u76f4\u5230\u73b0\u5728\uff0c MCS-51\u5185\u6838\u7cfb\u5217\u517c\u5bb9\u7684\u5355\u7247\u673a\u4ecd\u662f\u5e94\u7528\u7684\u4e3b\u6d41\u4ea7\u54c1\uff08\u6bd4\u5982\u76ee\u524d\u6d41\u884c\u768489S51\u300189C51\u7b49\uff09\uff0c\u5404\u9ad8\u6821\u53ca\u4e13\u4e1a\u5b66\u6821\u7684\u57f9\u8bad\u6559\u6750\u4ecd\u4e0eMCS-51\u5355\u7247\u673a\u4f5c\u4e3a\u4ee3\u8868\u8fdb\u884c\u7406\u8bba\u57fa\u7840\u5b66\u4e60\u3002
\u3000\u3000\u6709\u4e9b\u6587\u732e\u751a\u81f3\u4e5f\u5c068051\u6cdb\u6307MCS-51\u7cfb\u5217\u5355\u7247\u673a\uff0c8051\u662f\u65e9\u671f\u7684\u6700\u5178\u578b\u7684\u4ee3\u8868\u4f5c\uff0c\u7531\u4e8eMCS-51\u5355\u7247\u673a\u5f71\u54cd\u6781\u6df1\u8fdc\uff0c\u8bb8\u591a\u516c\u53f8\u90fd\u63a8\u51fa\u4e86\u517c\u5bb9\u7cfb\u5217\u5355\u7247\u673a\uff0c\u5c31\u662f\u8bf4MCS-51\u5185\u6838\u5b9e\u9645\u4e0a\u5df2\u7ecf\u6210\u4e3a\u4e00\u4e2a8\u4f4d\u5355\u7247\u673a\u7684\u6807\u51c6\u3002
\u3000\u3000\u5176\u4ed6\u7684\u516c\u53f8\u768451\u5355\u7247\u673a\u4ea7\u54c1\u90fd\u662f\u548cMCS-51\u5185\u6838\u517c\u5bb9\u7684\u4ea7\u54c1\u800c\u4ee5\u3002\u540c\u6837\u7684\u4e00\u6bb5\u7a0b\u5e8f\uff0c\u5728\u5404\u4e2a\u5355\u7247\u673a\u5382\u5bb6\u7684\u786c\u4ef6\u4e0a\u8fd0\u884c\u7684\u7ed3\u679c\u90fd\u662f\u4e00\u6837\u7684\uff0c\u5982ATMEL\u768489C51\uff08\u5df2\u7ecf\u505c\u4ea7\uff09\u300189S51\uff0c PHILIPS\uff08\u83f2\u5229\u6d66\uff09\uff0c\u548cWINBOND\uff08\u534e\u90a6\uff09\u7b49\uff0c\u6211\u4eec\u5e38\u8bf4\u7684\u5df2\u7ecf\u505c\u4ea7\u768489C51\u6307\u7684\u662fATMEL\u516c\u53f8\u7684 AT89C51\u5355\u7247\u673a\uff0c\u540c\u65f6\u662f\u5728\u539f\u57fa\u7840\u4e0a\u589e\u5f3a\u4e86\u8bb8\u591a\u7279\u6027\uff0c\u5982\u65f6\u949f\uff0c\u66f4\u4f18\u79c0\u7684\u662f\u7531Flash\uff08\u7a0b\u5e8f\u5b58\u50a8\u5668\u7684\u5185\u5bb9\u81f3\u5c11\u53ef\u4ee5\u6539\u51991000\u6b21\uff09\u5b58\u50a8\u5668\u53d6\u5e26\u4e86\u539f\u6765\u7684ROM\uff08\u4e00\u6b21\u6027\u5199\u5165\uff09\uff0cAT89C51\u7684\u6027\u80fd\u76f8\u5bf9\u4e8e8051\u5df2\u7ecf\u7b97\u662f\u975e\u5e38\u4f18\u8d8a\u7684\u4e86\u3002
\u3000\u3000\u4e0d\u8fc7\u5728\u5e02\u573a\u5316\u65b9\u9762\uff0c89C51\u53d7\u5230\u4e86PIC\u5355\u7247\u673a\u9635\u8425\u7684\u6311\u6218\uff0c89C51\u6700\u81f4\u547d\u7684\u7f3a\u9677\u5728\u4e8e\u4e0d\u652f\u6301ISP\uff08\u5728\u7ebf\u66f4\u65b0\u7a0b\u5e8f\uff09\u529f\u80fd\uff0c\u5fc5\u987b\u52a0\u4e0aISP\u529f\u80fd\u7b49\u65b0\u529f\u80fd\u624d\u80fd\u66f4\u597d\u5ef6\u7eedMCS-51\u7684\u4f20\u5947\u300289S51\u5c31\u662f\u5728\u8fd9\u6837\u7684\u80cc\u666f\u4e0b\u53d6\u4ee389C51\u7684\uff0c\u73b0\u5728\uff0c89S51\u76ee\u524d\u5df2\u7ecf\u6210\u4e3a\u4e86\u5b9e\u9645\u5e94\u7528\u5e02\u573a\u4e0a\u65b0\u7684\u5ba0\u513f\uff0c\u4f5c\u4e3a\u5e02\u573a\u5360\u6709\u7387\u7b2c\u4e00\u7684Atmel\u76ee\u524d\u516c\u53f8\u5df2\u7ecf\u505c\u4ea7AT89C51\uff0c\u5c06\u7528AT89S51\u4ee3\u66ff\u300289S51\u5728\u5de5\u827a\u4e0a\u8fdb\u884c\u4e86\u6539\u8fdb\uff0c89S51\u91c7\u75280.35\u65b0\u5de5\u827a\uff0c\u6210\u672c\u964d\u4f4e,\u800c\u4e14\u5c06\u529f\u80fd\u63d0\u5347,\u589e\u52a0\u4e86\u7ade\u4e89\u529b\u300289SXX\u53ef\u4ee5\u50cf\u4e0b\u517c\u5bb989CXX\u7b4951\u7cfb\u5217\u82af\u7247\u3002\u540c\u65f6\uff0cAtmel\u4e0d\u518d\u63a5\u53d789CXX\u7684\u5b9a\u5355\uff0c\u5927\u5bb6\u5728\u5e02\u573a\u4e0a\u89c1\u5230\u768489C51\u5b9e\u9645\u90fd\u662fAtmel\u524d\u671f\u751f\u4ea7\u7684\u5de8\u91cf\u5e93\u5b58\u800c\u4ee5\u3002\u5982\u679c\u5e02\u573a\u9700\u8981\uff0cAtmel\u5f53\u7136\u4e5f\u53ef\u4ee5\u518d\u6062\u590d\u751f\u4ea7AT89C51\u3002
89S51\u76f8\u5bf9\u4e8e89C51\u589e\u52a0\u7684\u65b0\u529f\u80fd\u5305\u62ec\uff1a
-- \u65b0\u589e\u52a0\u5f88\u591a\u529f\u80fd\uff0c\u6027\u80fd\u6709\u4e86\u8f83\u5927\u63d0\u5347\uff0c\u4ef7\u683c\u57fa\u672c\u4e0d\u53d8\uff0c\u751a\u81f3\u6bd489C51\u66f4\u4f4e\uff01
-- ISP\u5728\u7ebf\u7f16\u7a0b\u529f\u80fd\uff0c\u8fd9\u4e2a\u529f\u80fd\u7684\u4f18\u52bf\u5728\u4e8e\u6539\u5199\u5355\u7247\u673a\u5b58\u50a8\u5668\u5185\u7684\u7a0b\u5e8f\u4e0d\u9700\u8981\u628a\u82af\u7247\u4ece\u5de5\u4f5c\u73af\u5883\u4e2d\u5265\u79bb\u3002\u662f\u4e00\u4e2a\u5f3a\u5927\u6613\u7528\u7684\u529f\u80fd\u3002
-- \u6700\u9ad8\u5de5\u4f5c\u9891\u7387\u4e3a33MHz\uff0c\u5927\u5bb6\u90fd\u77e5\u905389C51\u7684\u6781\u9650\u5de5\u4f5c\u9891\u7387\u662f24M\uff0c\u5c31\u662f\u8bf4S51\u5177\u6709\u66f4\u9ad8\u5de5\u4f5c\u9891\u7387\uff0c\u4ece\u800c\u5177\u6709\u4e86\u66f4\u5feb\u7684\u8ba1\u7b97\u901f\u5ea6\u3002
-- \u5177\u6709\u53cc\u5de5UART\u4e32\u884c\u901a\u9053\u3002
-- \u5185\u90e8\u96c6\u6210\u770b\u95e8\u72d7\u8ba1\u65f6\u5668\uff0c\u4e0d\u518d\u9700\u8981\u50cf89C51\u90a3\u6837\u5916\u63a5\u770b\u95e8\u72d7\u8ba1\u65f6\u5668\u5355\u5143\u7535\u8def\u3002
-- \u53cc\u6570\u636e\u6307\u793a\u5668\u3002
-- \u7535\u6e90\u5173\u95ed\u6807\u8bc6\u3002
-- \u5168\u65b0\u7684\u52a0\u5bc6\u7b97\u6cd5\uff0c\u8fd9\u4f7f\u5f97\u5bf9\u4e8e89S51\u7684**\u53d8\u4e3a\u4e0d\u53ef\u80fd\uff0c\u7a0b\u5e8f\u7684\u4fdd\u5bc6\u6027\u5927\u5927\u52a0\u5f3a\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u6709\u6548\u7684\u4fdd\u62a4\u77e5\u8bc6\u4ea7\u6743\u4e0d\u88ab\u4fb5\u72af\u3002
-- \u517c\u5bb9\u6027\u65b9\u9762\uff1a\u5411\u4e0b\u5b8c\u5168\u517c\u5bb951\u5168\u90e8\u5b57\u7cfb\u5217\u4ea7\u54c1\u3002\u6bd4\u59828051\u300189C51\u7b49\u7b49\u65e9\u671fMCS-51\u517c\u5bb9\u4ea7\u54c1\u3002\u4e5f\u5c31\u662f\u8bf4\u6240\u6709\u6559\u79d1\u4e66\u3001\u7f51\u7edc\u6559\u7a0b\u4e0a\u7684\u7a0b\u5e8f\uff08\u4e0d\u8bba\u6559\u79d1\u4e66\u4e0a\u91c7\u7528\u7684\u5355\u7247\u673a\u662f8051\u8fd8\u662f89C51\u8fd8\u662fMCS-51\u7b49\u7b49\uff09\uff0c\u572889S51\u4e0a\u4e00\u6837\u53ef\u4ee5\u7167\u5e38\u8fd0\u884c\uff0c\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u5411\u4e0b\u517c\u5bb9\u3002
\u3000\u3000\u6bd4\u8f83\u7ed3\u679c\uff1a\u5c31\u5982\u540cINTEL\u7684P3\u5411P4\u5347\u7ea7\u4e00\u6837\uff0c\u867d\u7136\u90fd\u53ef\u4ee5\u8dd1Windows98\uff0c\u4e0d\u8fc7\u901f\u5ea6\u662f\u4e0d\u540c\u7684\u3002\u4eceAT89C51\u5347\u7ea7\u5230AT89S51 ,\u4e5f\u662f\u540c\u7406\u3002\u548cS51\u6bd4\u8d77\u6765\uff0cC51\u5c31\u8981\u900a\u8272\u4e00\u4e9b\uff0c\u5b9e\u9645\u5e94\u7528\u5e02\u573a\u65b9\u9762\u6280\u672f\u7684\u8fdb\u6b65\u662f\u6c38\u8fdc\u5411\u524d\u7684\u3002
AT89C51\u7684\u7b2c20\u811a\u662fGND\uff0c\u4e5f\u5c31\u662f\u7535\u8def\u4e2d\u7684\u5730\uff08\u96f6\u7535\u4f4d\u53c2\u8003\u70b9\uff09\uff0c\u5c5e\u4e8e\u7535\u6e90\u5f15\u811a\uff0c\u5176\u91cd\u8981\u7a0b\u5ea6\u4e0eVCC\u76f8\u5f53\uff0c\u4f7f\u7528\u65f6\u5fc5\u987b\u8fde\u63a5\u3002
还有STC10F、STC11F等也有这个封装的型号，具体请参阅
www.mcu-memory.com，上面有详细的选型参数表。
20管脚是接地线。
单片机51系列的20管脚要看这51系列的管脚数为多少.
40管脚的第20脚为电源地.
89C2051/89C4051
20管脚是gnd，用来接地，用的时候直接接到电源负极就行了。
如果是ATMEL单片机的话应该是 AT89C2051或AT89C4051
绛旓細STC12C绯诲垪鏄20鑴氱殑51鍗曠墖鏈锛屾湁STC12C2052绛夈傝繕鏈塖TC10F銆丼TC11F绛変篃鏈夎繖涓皝瑁呯殑鍨嬪彿锛屽叿浣撹鍙傞槄 www.mcu-memory.com锛屼笂闈㈡湁璇︾粏鐨勯夊瀷鍙傛暟琛ㄣ
绛旓細AT89C51鐨勭20鑴氭槸GND锛屼篃灏辨槸鐢佃矾涓殑鍦帮紙闆剁數浣嶅弬鑰冪偣锛夛紝灞炰簬鐢垫簮寮曡剼锛屽叾閲嶈绋嬪害涓嶸CC鐩稿綋锛屼娇鐢ㄦ椂蹇呴』杩炴帴銆
绛旓細瀵逛簬DIP40灏佽鐨51鍗曠墖鏈猴紝鐢垫簮VCC寮曡剼鏄40鑴氾紝鎺ュ湴GND寮曡剼涓20鑴銆傝涓嬪浘銆傜浉鍏充粙缁嶏細寮曡剼锛屽張鍙鑴氾紝鑻辨枃鍙玃in銆傚氨鏄粠闆嗘垚鐢佃矾锛堣姱鐗囷級鍐呴儴鐢佃矾寮曞嚭涓庡鍥寸數璺殑鎺ョ嚎锛屾墍鏈夌殑寮曡剼灏辨瀯鎴愪簡杩欏潡鑺墖鐨勬帴鍙ｃ傚紩绾挎湯绔殑涓娈碉紝閫氳繃杞拵鐒婁娇杩欎竴娈典笌鍗板埗鏉夸笂鐨勭剨鐩樺叡鍚屽舰鎴愮剨鐐广傚紩鑴氬彲鍒掑垎涓鸿剼璺燂紙bottom...
绛旓細Proteus涓姱鐗囩殑鐢垫簮寮曡剼VCC锛孏ND涓鑸槸鐪佺暐浜嗭紝80C51鐨40鑴氭槸VCC锛20鑴氭槸GND锛孭roteus涓笉鍙槸80C51鐪佺暐鐢垫簮寮曡剼锛屽嚑涔庢暟瀛楅泦鎴愮數璺強鍗曠墖鏈哄拰CPU绛夐兘鏄繖涔堢敾鐨勶紝浠跨湡鏃剁郴缁熶細榛樿鐨勮嚜鍔ㄥ姞鐢垫簮鐨勩傝繖涓嶱rotel99se鐨勭敾娉曠浉浼硷紝闆嗘垚鐢佃矾鐨勭數婧愬紩鑴氬彲浠ョ渷鐣ワ紝鐢熸垚PCB鏃朵細鑷姩杩炴帴鍒癡CC鍜孏ND涓婄殑銆
绛旓細STC12C5A60S2 娣樺疂鍗曚环鍦8鍏冨乏鍙 60K ROM ,1280 SRAM ,AD 10浣, 8璺紝瀹氭椂鍣═0锛孴1灏戜竴涓惂 PIC鐨勮瘽浣犺繖浜涜姹傜殑鍗曠墖鏈灏卞緢濂芥壘浜哖IC16F绯诲垪鍩烘湰閮借兘甯﹁繖浜涘姛鑳
绛旓細銆51鍗曠墖鏈寮曡剼鍥惧強寮曡剼鍔熻兘銆夋嬁鍒颁竴鍧楄姱鐗囷紝鎯宠浣跨敤瀹冿紝棣栧厛蹇呴』瑕佺煡閬撴庢牱杩炵嚎锛屾垜浠敤鐨勪竴鍧楃О涔嬩负89C51鐨勮姱鐗囷紝涓嬮潰鎴戜滑灏辩湅涓涓嬪浣曠粰瀹冭繛绾裤1銆 鐢垫簮锛氳繖褰撶劧鏄繀涓嶅彲灏戠殑浜嗐傚崟鐗囨満浣跨敤鐨勬槸5V鐢垫簮锛屽叾涓鏋佹帴40绠¤剼锛岃礋鏋侊紙鍦帮級鎺20绠¤剼銆2銆 鎸拵鐢佃矾锛氬崟鐗囨満鏄竴绉嶆椂搴忕數璺紝蹇呴』渚涚粰鑴夊啿...
绛旓細濡傛灉鍦51鍗曠墖鏈虹殑XTAL1鍜孹TAL2寮曡剼涔嬮棿澶栨帴鏅朵綋璋愭尟鍣,渚夸細浜х敓鑷縺鎸崱,鍗冲彲鍦ㄥ唴閮ㄤ骇鐢熶笌澶栧姞鏅朵綋鍚岄鐜囩殑鎸崱鏃堕挓銆傛渶甯歌鐨勫唴閮ㄦ柟寮忔尟鑽″浘濡傚浘3.2鎵绀恒 鍥3.2 鏅朵綋鎸崱鐢佃矾涓嶅悓鍗曠墖鏈烘渶楂樺伐浣滈鐜囦笉涓鏍,濡侫T89C51鐨勬渶楂樺伐浣滈鐜囦负24MHZ,AT89S51鐨勬渶楂樺伐浣滈鐜囧彲杈33MHZ銆傜敱浜庡埗閫犲伐鑹虹殑鏀硅繘,鐜板湪鍗曠墖鏈虹殑宸ヤ綔棰戠巼...
绛旓細鍗曠墖鏈涓鑸槸5浼忎緵鐢垫垨3浼忎緵鐢碉紝鏈夋槑鏄句笉鍚屾爣璁帮紝姣斿STC鐨: STC12CXX绯诲垪 STC10FXX绯诲垪 STC11FXX绯诲垪 灞炰簬5浼忎緵鐢电殑, 鑰孲TC10LXX绯诲垪 STC11LXX绯诲垪閮芥槸3浼忎緵鐢碉紝DATASHEET涓婃湁璇存槑 鎴戞墜涓婅繖涓猄TC11F04E(35I-PDIP20) 灏辨槸涓涓20绠¤剼5V渚涚數鐨勬彃浠跺紡鍗曠墖鏈鸿姱鐗 4K绋嬪簭绌洪棿涓斿甫EPROM鐨 ...
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绛旓細鍢垮樋 涓嶅彲浠ョ敤101鍜102浠ｆ浛51鍗曠墖鏈鏅舵尟鐢佃矾鐨勪袱涓摲鐗囩數瀹圭殑 1 101鍜102鐨勫鍊煎垎鍒槸100鍜1000PF 鑰51鍗曠墖鏈烘櫠鎸數璺殑涓や釜鐡风墖鐢靛搴旇鏄20锝33PF 浜岃呯浉宸お澶 涓嶅彲鏇夸唬 杩樻槸鍘诲崠鐢靛瓙鍏冨櫒浠剁殑鍟嗗簵涔2涓惂 鍛靛懙 鍒繕缁欎亢鍔犲垎鍝 ...
