\n\t1.1 \u603b\u4f53\u65b9\u6848\u8bbe\u8ba1<\/p>\n
\n\t\u5728\u8be5\u901a\u4fe1\u6d4b\u8bd5\u4eea\u5668\u4e2d\uff0c\u5b9e\u65f6\u63a7\u5236\u6a21\u5757\u4e3b\u8981\u5b9e\u73b0\u5bf9\u5c04\u9891<\/u>\u63a5\u6536\u9891\u7efc\u3001\u5c04\u9891\u53d1\u751f\u9891\u7efc\u3001\u6ee4\u6ce2\u5668<\/u>\u7ec4\u4ef6\u3001\u5c04\u9891\u8f93\u5165\u6a21\u5757\u3001\u5c04\u9891\u8f93\u51fa\u6a21\u5757\u7b49\u5b9e\u65f6\u63a7\u5236\u4f5c\u7528\u3002\u5bf9\u5c04\u9891\u68c0\u6ce2\u4fe1\u53f7\u8fdb\u884cA\/D\u8f6c\u6362\u4ee5\u83b7\u53d6\u6570\u636e\u3002\u4e0e\u4e0a\u4f4d\u8ba1\u7b97\u673a<\/u>\u8fdb\u884c\u901a\u4fe1\u7b49\u529f\u80fd\u3002<\/p>\n
\n\t\u6839\u636e\u5f85\u5b9e\u73b0\u7684\u7cfb\u7edf\u529f\u80fd\u8981\u6c42\uff0c\u7efc\u5408\u8003\u8651\u7cfb\u7edf\u8d44\u6e90\uff0c\u53ca\u82af\u7247\u6027\u4ef7\u6bd4\u7b49\u56e0\u7d20\uff0c\u786e\u5b9a\u91c7\u7528\u4ee5C51\u5355\u7247\u673a\u4e3a\u4e3b\u63a7\u82af\u7247\u7684\u5d4c\u5165\u5f0f\u7cfb\u7edf\u65b9\u6848\uff0c\u82af\u7247\u4e3aSilicon Labs<\/u>\u7684C8051F120\uff0c\u5177\u6709128 kB\u7247\u5185Flash\u5b58\u50a8\u5668<\/u>\u30018×1 024+256 Byte<\/u>\u7684\u7247\u5185RAM<\/u>\uff0c\u53ef\u5bfb\u574064 kB\u5730\u5740\u7a7a\u95f4\u7684\u5916\u90e8\u6570\u636e\u5b58\u50a8<\/u>\u5668\u63a5\u53e3<\/u>\u3001SPI<\/u>\u3001UART<\/u>\u3001\u5b9a\u65f6\u5668<\/u>\u3001\u65f6\u949f\u632f\u8361\u5668<\/u>\u3001PLL\u7b49\uff0c\u7247\u4e0a\u5916\u8bbe\u8d44\u6e90\u4e30\u5bcc\u3001\u63a7\u5236\u65b9\u4fbf\u3002<\/p>\n
\n\t\u7cfb\u7edf\u8d44\u6e90\u5206\u914d\uff1a\u5c04\u9891\u63a5\u6536\u3001\u53d1\u5c04\u9891\u7efc\u6a21\u5757\uff0c\u5185\u542bDDS\uff0cPLL\u7b49\uff0c\u5916\u90e8\u63a7\u5236\u63a5\u53e3\u662f\u5fae\u63a7\u5236\u63a5\u53e3\uff0c\u56e0\u6b64\u76f4\u63a5\u7528\u5355\u7247\u673a\u7684\u5730\u5740\u3001\u6570\u636e\u3001\u63a7\u5236\u4e09\u603b\u7ebf\u5b9e\u65bd\u63a7\u5236\u3002\u6ee4\u6ce2\u7ec4 \u4ef6\u3001\u5c04\u9891\u8f93\u5165\/\u8f93\u51fa\u6a21\u5757\u7b49\u7684\u5de5\u4f5c\u72b6\u6001\u4e0e\u63a5\u53e3\u4e0a\u4fe1\u53f7\u7535\u5e73\u9ad8\u4f4e\u6709\u5173\uff0c\u56e0\u6b64\u7528GPIO\u7684\u65b9\u5f0f\u8fdb\u884c\u63a7\u5236\u3002A\/D\u8f6c\u6362\u63a7\u5236\u4f7f\u7528\u4e32\u884c\u5916\u56f4\u8bbe\u5907\u63a5\u53e3SPI.\u4e0e\u4e0a\u4f4d\u673a\u7684\u901a \u4fe1\u4f7f\u7528RS<\/u>-232\u4e32\u53e3\u3002\u603b\u4f53\u8bbe\u8ba1\u6846\u56fe\u5982\u56fe1\u6240\u793a\u3002<\/p>\n
\n\t![\"\u57fa\u4e8eC51\u5355\u7247\u673a\u7684\u901a\u4fe1\u6d4b\u8bd5\u4eea\u5668\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191007\/11331M511-0.png\")
<\/p>\n
\n\t1.2 \u603b\u7ebf\u53caI\/O<\/u>\u63a7\u5236\u7684\u8bbe\u8ba1<\/p>\n
\n\t\u5bf9\u4e8e\u5c04\u9891\u63a5\u6536\u9891\u7efc\u3001\u5c04\u9891\u53d1\u5c04\u9891\u7efc\u6a21\u5757\uff0c\u76f4\u63a5\u91c7\u7528\u603b\u7ebf\u63a7\u5236\uff0c\u4e3a\u907f\u514d\u4e0d\u540c\u7684\u6a21\u5757\u63a7\u5236\u65f6\u76f8\u4e92\u5e72\u6270\uff0c\u75283-8\u8bd1\u7801\u5668\u5bf9\u603b\u7ebf\u5730\u5740\u8bd1\u7801\uff0c\u4ea7\u751f\u4e0d\u540c\u6a21\u5757\u7684\u7247\u9009\u4fe1\u53f7\u3002\u540c \u65f6\u6570\u636e\u7ebf\u901a\u8fc7\u603b\u7ebf\u6536\u53d1\u5668<\/u>\u4ee5\u63d0\u9ad8\u5e26\u8d1f\u8f7d\u80fd\u529b\u3002\u5bf9\u4e8e\u6ee4\u6ce2\u7ec4\u4ef6\u3001\u5c04\u9891\u8f93\u5165\/\u8f93\u51fa\u7b49\u7528I\/O\u63a7\u5236\u7684\u6a21\u5757\uff0c\u5e76\u672a\u76f4\u63a5\u4f7f\u752851\u82af\u7247\u7684GPIO\u5f15\u811a\uff0c\u5219\u662f\u5c06\u6570\u636e\u603b\u7ebf\u7ecf\u9501<\/u> \u5b58\u540e\u6a21\u62dfGPIO\u4fe1\u53f7\u4f9b\u76f8\u5173\u6a21\u5757\u4f7f\u7528\uff0c\u5982\u56fe2\u6240\u793a\uff0c\u5176\u4e2d\uff0cIO_\/WR1\u7531B_\/CS7\u4e0e\u5355\u7247\u673a\u5199\u7ebf\u903b\u8f91\u6216\u540e\u4ea7\u751f\u3002<\/p>\n
\n\t![\"\u57fa\u4e8eC51\u5355\u7247\u673a\u7684\u901a\u4fe1\u6d4b\u8bd5\u4eea\u5668\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191007\/11331K204-1.jpg\")
<\/p>\n
\n\t1.3 SPI\u53caRS232\u63a7\u5236\u63a5\u53e3<\/p>\n
\n\tC8051F120\u82af\u7247\u4e0a\u672c\u8eab\u81ea\u5e26\u4e86A\/D\u8f6c\u6362\u5668\uff0c\u4f46\u53ea\u670912\u4f4d\uff0c\u4e0d\u9002\u5408\u8be5\u7cfb\u7edf\u7684\u9700\u6c42\uff0c\u6545\u5728\u7247\u5916\u53e6\u52a0\u4e00\u7247ADI<\/u>\u516c\u53f8\u7684AD7707.\u5176\u5206\u8fa8\u7387\u4e3a16\u4f4d\uff0c \u662f∑-\u25b3\u4f53\u7cfb\u7ed3\u6784\uff0c\u8f6c\u6362\u7684\u662f\u8f93\u5165\u7535\u5e73\u7684\u5e73\u5747\u503c\u3002\u4e09\u901a\u9053\uff0c\u8f93\u5165\u7535\u5e73\u8303\u56f4\u53ef\u8fbe±10 mV~±10 V.\u6839\u636e\u5b9e\u9645\u8981\u6c42\uff0c\u8be5\u7cfb\u7edf\u4f7f\u7528AI<\/u>N3\u9ad8\u7535\u5e73\u8f93\u5165\u7aef\u53e3\uff0cUnbuffered\u6a21\u5f0f\uff0cHICOM\u3001REF-\u63a5\u6a21\u62df\u5730\uff0cVBIAS\u4e0eREF+\u5747\u63a5+2.5 V\u53c2\u8003\u7535\u538b\uff0c\u6a21\u62df\u7535\u6e905 V\uff0c\u6570\u5b57\u7535\u6e90<\/u>3.3 V\uff0c\u80fd\u68c0\u6d4b\u8f93\u5165\u8303\u56f4\u4e3a0~10 V\u7684\u5355\u6781\u6027\u7535\u5e73\u3002\u5176\u63a7\u5236\u63a5\u53e3\u662f\u540c\u6b65\u4e32\u884c\u53e3\uff0c\u752851\u82af\u7247\u7684SPI\u76f4\u63a5\u63a7\u5236\u3002\u56fe3\u662fAD7707\u7684\u7535\u6c14\u8fde\u63a5\u56fe\u3002<\/p>\n
\n\t![\"\u57fa\u4e8eC51\u5355\u7247\u673a\u7684\u901a\u4fe1\u6d4b\u8bd5\u4eea\u5668\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191007\/11331I558-2.jpg\")
<\/p>\n
\n\t\u5355\u7247\u673a\u4e0e\u4e0a\u4f4d\u8ba1\u7b97\u673a\u7684\u901a\u4fe1\u4f7f\u7528\u901a\u7528\u5f02\u6b65\u6536\u53d1\u5668UART\uff0c\u5916\u63a5MAX3224\uff0c\u5c06UART\u4fe1\u53f7\u8f6c\u6362\u4e3aRS-232\u4fe1\u53f7\u8fdb\u884c\u4f20\u8f93\uff0cMAX3224\u5728 3~5.5 V\u4f4e\u7535\u538b\u4e0b\u5de5\u4f5c\uff0c\u5374\u53ef\u4ea7\u751fRS-232\u7684±12 V\u7535\u538b\uff0c\u53ea\u9700\u8fde\u63a5Tx\u3001Rx\u548c\u5730\u7ebf\u5373\u53ef\u5b9e\u73b0\u5f02\u6b65\u4e32\u884c\u901a\u4fe1\u3002\u7cfb\u7edf\u4e2d\u4ecd\u6709\u4e00\u4e9b\u65f6\u949f<\/u>\u3001\u590d\u4f4d\u7535\u8def<\/u>\u548c\u7535\u6e90\u7b49\uff0c\u5728\u6b64\u4e0d\u518d\u8d58\u8ff0\u3002<\/p>\n
\n\t2 \u8f6f\u4ef6\u8bbe\u8ba1\u4e0e\u5b9e\u73b0<\/p>\n
\n\t2.1 \u4e3b\u7a0b\u5e8f\u6846\u67b6<\/p>\n
\n\t\u4e3b\u7a0b\u5e8f\u6d41\u7a0b\u56fe\u5982\u56fe4\u6240\u793a\u3002<\/p>\n
\n\t![\"\u57fa\u4e8eC51\u5355\u7247\u673a\u7684\u901a\u4fe1\u6d4b\u8bd5\u4eea\u5668\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191007\/11331M5Y-3.jpg\")
<\/p>\n
\n\t\u4e3b\u7a0b\u5e8f\u662f\u987a\u5e8f\u7ed3\u6784\uff0c\u8f83\u4e3a\u7b80\u5355\u3002\u4e3b\u8981\u5206\u4e24\u90e8\u5206\uff1a\u4e00\u662f\u5bf9\u7cfb\u7edf\u5404\u90e8\u5206\u8fdb\u884c\u521d\u59cb\u5316\u8bbe\u7f6e\uff0c\u4f7f\u5176\u80fd\u591f\u5de5\u4f5c\u5728\u6b63\u5e38\u72b6\u6001\u3002\u4e8c\u662f\u6b63\u5e38\u5de5\u4f5c\u5faa\u73af\u72b6\u6001\uff0c\u5f53\u6536\u5230\u4e0a\u4f4d\u673a\u7684\u63a7\u5236\u547d\u4ee4\u65f6\uff0c\u5373\u8fdb\u884c\u76f8\u5e94\u7684\u64cd\u4f5c\uff0c\u65e0\u547d\u4ee4\u65f6\u5219\u7b49\u5f85\u3002\u5bf9\u4e8e\u5d4c\u5165\u5f0f\u7a0b\u5e8f\u800c\u8a00\uff0c\u65e0\u9650\u5faa\u73af\u662f\u5fc5\u8981\u7684\u3002<\/p>\n
\n\t2.2 \u4e32\u53e3\u901a\u4fe1\u7a0b\u5e8f<\/p>\n
\n\t\u4e32\u53e3\u901a\u4fe1\u7a0b\u5e8f\u5b9e\u73b0\u4e0e\u4e0a\u4f4d\u673a\u7684\u901a\u4fe1\u529f\u80fd\u3002\u5177\u4f53\u64cd\u4f5c\u4e2d\u4f7f\u7528\u4e00\u4e2a\u5faa\u73af\u961f\u5217\u5b58\u653e\u63a5\u6536\u5230\u7684\u4e0a\u4f4d\u673a\u547d\u4ee4\uff0c\u5206\u522b\u7528\u5934\u6307\u9488\u548c\u5c3e\u6307\u9488\u6307\u5411\u961f\u5934\u548c\u961f\u5c3e\uff0c\u5c06\u5404\u547d\u4ee4\u5b57\u8282\u53d6\u51fa\uff0c\u8fdb\u884c\u76f8\u5e94\u64cd\u4f5c\u3002\u547d\u4ee4\u6267\u884c\u5b8c\u6bd5\uff08\u961f\u5217\u53d6\u7a7a\uff09\uff0c\u6e05\u6807\u5fd7\u4f4d\uff0c\u7b49\u5f85\u65b0\u547d\u4ee4\u3002\u5982\u56fe5\u6240\u793a\u3002<\/p>\n
\n\t![\"\u57fa\u4e8eC51\u5355\u7247\u673a\u7684\u901a\u4fe1\u6d4b\u8bd5\u4eea\u5668\u8bbe\u8ba1\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/191007\/11331J609-4.jpg\")
<\/p>\n
\n\t2.3 SPI\u901a\u4fe1\u7a0b\u5e8f<\/p>\n
\n\tC51\u91c7\u7528SPI\u4e3b\u6a21\u5f0f\u4e0eAD7707\u8fdb\u884c\u901a\u4fe1\u3002\u4e3b\u6a21\u5f0f\u5199AD7707\u8f83\u4e3a\u7b80\u5355\uff0c\u5355\u7247\u673a\u5148\u51991Byte\u7684\u914d\u7f6e\u6570\u636e\u7ed9AD7707\uff0c\u5176\u4f1a\u81ea\u52a8\u5c06\u8be5\u6570\u636e\u653e\u5165\u81ea\u8eab\u7684\u901a\u4fe1\u5bc4\u5b58\u5668<\/u>\uff0c\u968f\u540eAD7707\u6839\u636e\u8be5\u914d\u7f6e\u503c\u786e\u5b9a\u4e0b\u4e00\u6b65\u8981\u5199\u7684\u5bc4\u5b58\u5668\u53ca\u6570\u636e\u5927\u5c0f\uff0c\u518d\u5c06\u5355\u7247\u673a \u968f\u540e\u8f93\u5165\u7684\u6570\u636e\u653e\u5165\u6307\u5b9a\u4f4d\u7f6e\u3002C8051F120\u53d1\u6570\u636e\u524d\uff0c\u5148\u6839\u636eSPICN\u5bc4\u5b58\u5668\u7684TXBMT\u4f4d\u7684\u503c\u5224\u65ad\u662f\u5426\u80fd\u591f\u53d1\u9001\u6570\u636e\uff0c\u518d\u5411\u81ea\u8eab\u7684SPIDAT\u5bc4\u5b58 \u5668\u5199\u6570\u636e\u5373\u53ef\uff0c\u786c\u4ef6\u4f1a\u81ea\u52a8\u5c06\u6570\u636e\u53d1\u51fa\u3002<\/p>\n
\n\t\u4e3b\u6a21\u5f0f\u8bfbAD7707\u8f83\u4e3a\u56f0\u96be\u3002\u5f53C51\u5df2\u8bbe\u7f6eAD7707\u7684\u901a\u4fe1\u5bc4\u5b58\u5668\uff0c\u8868\u660e\u4e0b\u4e00\u6b65\u64cd\u4f5c\u662f\u8bfbAD7707\u7684\u67d0\u4e2a\u5bc4\u5b58\u5668\u503c\u540e\uff0cC51\u5411SPIDAT\u5199\u4efb \u610f\u503c\uff0c\u4e4b\u540eSPI\u6570\u636e\u7ebf\uff08MOSI\uff09\u4e0a\u4f1a\u4e32\u884c\u79fb\u51fa\u6570\u636e\uff0c\u540c\u65f6\u65f6\u949f\u7ebf\u4e0a\u4ea7\u751f\u4e32\u884c\u65f6\u949f\uff0c\u4ece\u8bbe\u5907\uff08AD7707\uff09\u6536\u5230\u65f6\u949f\uff0c\u5c06\u9884\u5907\u7684\u6570\u636e\u9001\u5230MI<\/u>SO\u7ebf\u4e0a\u4ea4\u7ed9 C51\uff0c\u540c\u65f6\u4e0d\u91c7\u7eb3\u4e3b\u8bbe\u5907\u53d1\u9001\u7684\u4efb\u610f\u503c\u3002C51\u5c06\u53d1\u9001\u7684\u4e32\u884c\u6570\u636e\u653e\u5728\u79fb\u4f4d\u5bc4\u5b58\u5668\u4e2d\uff0c\u5f53\u6700\u540e\u4e00\u4f4d\u6536\u5230\u540e\u5373\u79fb\u5165\u6536\u7f13\u51b2\u5668\uff0c\u518d\u8bfbSPIDAT\u4fbf\u53ef\u8bfb\u51fa\u6570\u636e\u3002<\/p>\n
\n\t2.4 \u5176\u4ed6\u8f6f\u4ef6\u6a21\u5757<\/p>\n
\n\t\u5176\u4ed6\u8f6f\u4ef6\u6a21\u5757\u5747\u662f\u6839\u636e\u5404\u90e8\u5206\u786c\u4ef6\u7684\u5177\u4f53\u8981\u6c42\uff0c\u901a\u8fc7\u5411\u6240\u5206\u914d\u7684\u5bf9\u5e94\u5730\u5740\u7a7a\u95f4\u6309\u5e8f\u53d1\u9001\u6240\u9700\u6570\u636e\u6765\u5b9e\u73b0\u76f8\u5173\u529f\u80fd\u3002<\/p>\n
\n\t3 \u7ed3\u675f\u8bed<\/p>\n
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