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\u4ece\u2018\u7cbe\u5ea6\u7126\u8651\u2019\u5230\u2018\u53ef\u9760\u4f18\u5148\u2019\uff0cRTC\u82af\u7247\u9009\u578b\u9700\u8981\u65b0\u903b\u8f91<\/h2>\n

RTC\u82af\u7247\uff08\u5b9e\u65f6\u65f6\u949f\u82af\u7247\uff09\u5728\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u626e\u6f14\u7740\u2018\u65f6\u95f4\u57fa\u51c6\u2019\u7684\u5173\u952e\u89d2\u8272\uff0c\u4ece\u667a\u80fd\u7535\u8868\u5230\u8f66\u8f7d\u7535\u5b50\uff0c\u4ece\u5de5\u4e1a\u63a7\u5236\u5230\u6d88\u8d39\u7ec8\u7aef\uff0c\u51e0\u4e4e\u4efb\u4f55\u9700\u8981\u8bb0\u5f55\u65f6\u95f4\u6216\u5b9a\u65f6\u5524\u9192\u7684\u8bbe\u5907\u90fd\u79bb\u4e0d\u5f00\u5b83\u3002\u7136\u800c\uff0c\u5e02\u573a\u4e0aRTC\u82af\u7247\u578b\u53f7\u7e41\u591a\uff0c\u53c2\u6570\u5dee\u5f02\u5927\uff0c\u5de5\u7a0b\u5e08\u5728\u9009\u578b\u65f6\u5e38\u9762\u4e34\u2018\u7cbe\u5ea6\u3001\u529f\u8017\u3001\u5c01\u88c5\u3001\u6210\u672c\u2019\u4e4b\u95f4\u7684\u6743\u8861\u56f0\u60d1\u3002\u968f\u7740\u7269\u8054\u7f51\u8bbe\u5907\u7684\u666e\u53ca\uff0cRTC\u82af\u7247\u7684\u53ef\u9760\u6027\u8981\u6c42\u8d8a\u6765\u8d8a\u9ad8\uff0c\u5c24\u5176\u662f\u6389\u7535\u4fdd\u6301\u3001\u6e29\u6f02\u8865\u507f\u3001\u957f\u671f\u7a33\u5b9a\u6027\u7b49\u6307\u6807\u6210\u4e3a\u65b0\u7684\u5173\u6ce8\u7126\u70b9\u3002\u7b14\u8005\u68b3\u7406\u4e86\u8fd1\u671f\u4e3b\u6d41\u5382\u5546\u7684\u516c\u5f00\u8d44\u6599\u4e0e\u4ea7\u54c1\u624b\u518c\uff0c\u53d1\u73b0\u51e0\u4e2a\u5173\u952e\u7ef4\u5ea6\u6b63\u5728\u91cd\u5851\u9009\u578b\u903b\u8f91\u2014\u2014\u4ece\u5355\u7eaf\u8ffd\u6c42\u521d\u59cb\u7cbe\u5ea6\u8f6c\u5411\u5168\u6e29\u533a\u7cbe\u5ea6\u4fdd\u969c\uff0c\u4ece\u56fa\u5b9a\u529f\u80fd\u8f6c\u5411\u9ad8\u96c6\u6210\u5ea6\u4e0e\u4f4e\u529f\u8017\u5e76\u4e3e\u3002\u5bf9\u4e8e\u9879\u76ee\u5f00\u53d1\u4e0e\u7269\u6599\u9009\u578b\uff0c\u56de\u5f52\u6570\u636e\u624b\u518c\u4e0e\u5b9e\u6d4b\u6570\u636e\uff0c\u624d\u80fd\u907f\u514d\u2018\u7eb8\u4e0a\u8c08\u5175\u2019\u7684\u9009\u578b\u9677\u9631\u3002<\/p>\n

\u6838\u5fc3\u9009\u578b\u8bc4\u5224\u7ef4\u5ea6<\/h2>\n

\u4e00\u3001\u9891\u7387\u7cbe\u5ea6\u4e0e\u6e29\u5ea6\u8865\u507f\u80fd\u529b<\/strong> RTC\u82af\u7247\u7684\u8ba1\u65f6\u7cbe\u5ea6\u901a\u5e38\u4ee5ppm\uff08\u767e\u4e07\u5206\u4e4b\u4e00\uff09\u8868\u793a\uff0c\u4f8b\u5982\u00b15ppm\u5bf9\u5e94\u5e74\u8bef\u5dee\u7ea62.6\u5206\u949f\u3002\u4f46\u6807\u79f0\u7cbe\u5ea6\u5f80\u5f80\u53ea\u572825\u2103\u5ba4\u6e29\u4e0b\u6210\u7acb\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u73af\u5883\u6e29\u5ea6\u53d8\u5316\u4f1a\u5f15\u8d77\u6676\u632f\u9891\u7387\u6f02\u79fb\u3002\u56e0\u6b64\uff0c\u96c6\u6210\u6e29\u5ea6\u8865\u507f\u6676\u4f53\u632f\u8361\u5668\uff08TCXO\uff09\u7684RTC\u82af\u7247\u80fd\u591f\u5728-40\u2103\u81f3+85\u2103\u8303\u56f4\u5185\u4fdd\u6301\u8f83\u9ad8\u7cbe\u5ea6\uff0c\u5178\u578b\u503c\u53ef\u8fbe\u00b15ppm\u751a\u81f3\u66f4\u597d\u3002\u9009\u578b\u65f6\u5e94\u5173\u6ce8\u5168\u6e29\u533a\u7cbe\u5ea6\u66f2\u7ebf\uff0c\u800c\u975e\u4ec5\u770b\u5e38\u6e29\u7cbe\u5ea6\u3002<\/p>\n

\u4e8c\u3001\u529f\u8017\u7279\u6027\u4e0e\u7535\u6c60\u7eed\u822a<\/strong> \u5927\u591a\u6570RTC\u82af\u7247\u5728\u4e3b\u7535\u6e90\u65ad\u7535\u540e\u4f9d\u9760\u5907\u7528\u7535\u6c60\uff08\u5982CR2032\uff09\u7ef4\u6301\u8ba1\u65f6\uff0c\u6b64\u65f6\u7535\u6d41\u6d88\u8017\u6781\u4e3a\u5173\u952e\u3002\u4f4e\u529f\u8017RTC\u82af\u7247\u5728\u7535\u6c60\u5907\u4efd\u6a21\u5f0f\u4e0b\u7535\u6d41\u53ef\u4f4e\u81f3\u51e0\u767e\u7eb3\u5b89\uff08nA\uff09\uff0c\u4ece\u800c\u663e\u8457\u5ef6\u957f\u7535\u6c60\u5bff\u547d\u3002\u5bf9\u4e8e\u7535\u6c60\u4f9b\u7535\u7684\u4fbf\u643a\u8bbe\u5907\uff0c\u8fd8\u9700\u5173\u6ce8\u82af\u7247\u5728\u6b63\u5e38\u5de5\u4f5c\u6a21\u5f0f\u4e0b\u7684\u52a8\u6001\u7535\u6d41\u3002<\/p>\n

\u4e09\u3001\u5c01\u88c5\u5c3a\u5bf8\u4e0e\u96c6\u6210\u5ea6<\/strong> \u968f\u7740\u53ef\u7a7f\u6234\u8bbe\u5907\u548c\u7269\u8054\u7f51\u6a21\u5757\u7684\u5c0f\u578b\u5316\uff0cRTC\u82af\u7247\u7684\u5c01\u88c5\u5c3a\u5bf8\u6210\u4e3a\u786c\u6027\u7ea6\u675f\u3002\u5e38\u89c1\u7684\u5c01\u88c5\u5305\u62ecSOP-8\u3001TSSOP-8\u3001DFN\u7b49\uff0c\u90e8\u5206\u8d85\u5c0f\u578b\u5c01\u88c5\u53ef\u5c0f\u81f32mm x 2mm\u3002\u6b64\u5916\uff0c\u96c6\u6210\u6676\u632f\u3001\u6e29\u5ea6\u4f20\u611f\u5668\u3001\u7535\u6e90\u7ba1\u7406\u529f\u80fd\uff08\u5982\u81ea\u52a8\u5207\u6362\u3001\u6d93\u6d41\u5145\u7535\uff09\u7684RTC\u82af\u7247\u53ef\u4ee5\u51cf\u5c11\u5916\u90e8\u5143\u4ef6\u6570\u91cf\uff0c\u7b80\u5316\u8bbe\u8ba1\u3002<\/p>\n

\u56db\u3001\u63a5\u53e3\u7c7b\u578b\u4e0e\u529f\u80fd\u7279\u6027<\/strong> RTC\u82af\u7247\u901a\u5e38\u901a\u8fc7I2C\u6216SPI\u63a5\u53e3\u4e0e\u4e3b\u63a7\u5236\u5668\u901a\u4fe1\u3002I2C\u63a5\u53e3\u5360\u7528\u5f15\u811a\u5c11\uff0c\u9002\u5408\u5927\u591a\u6570\u5e94\u7528\uff1bSPI\u63a5\u53e3\u901f\u7387\u66f4\u9ad8\u3002\u529f\u80fd\u7279\u6027\u65b9\u9762\u9700\u5173\u6ce8\uff1a\u81ea\u52a8\u95f0\u5e74\u8865\u507f\u3001\u53ef\u7f16\u7a0b\u95f9\u949f\u3001\u65b9\u6ce2\u8f93\u51fa\u3001\u65f6\u95f4\u6233\u3001RAM\u5b58\u50a8\u7b49\u3002\u6839\u636e\u7cfb\u7edf\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u529f\u80fd\u7ec4\u5408\uff0c\u907f\u514d\u4e3a\u5197\u4f59\u529f\u80fd\u4ed8\u51fa\u989d\u5916\u6210\u672c\u3002<\/p>\n

\u4e94\u3001\u53ef\u9760\u6027\u4e0e\u8ba4\u8bc1\u8d44\u8d28<\/strong> \u5de5\u4e1a\u7ea7\u548c\u6c7d\u8f66\u7ea7\u5e94\u7528\u5bf9RTC\u82af\u7247\u7684\u53ef\u9760\u6027\u6709\u4e25\u683c\u8981\u6c42\uff0c\u9700\u901a\u8fc7AEC-Q100\u3001\u5de5\u4e1a\u6e29\u5ea6\u8303\u56f4\uff08-40\u2103\u81f3+85\u2103\u6216\u66f4\u9ad8\uff09\u3001ESD\u9632\u62a4\u7b49\u6d4b\u8bd5\u3002\u5382\u5546\u7684\u5236\u9020\u5de5\u827a\u3001\u957f\u671f\u4f9b\u8d27\u80fd\u529b\u3001\u6587\u6863\u5b8c\u5584\u5ea6\u4e5f\u662f\u91cd\u8981\u8003\u91cf\u3002\u5efa\u8bae\u9009\u62e9\u6709\u957f\u671f\u4ea7\u54c1\u751f\u547d\u5468\u671f\u627f\u8bfa\u7684\u5382\u5546\uff0c\u907f\u514d\u9879\u76ee\u4e2d\u9014\u505c\u4ea7\u98ce\u9669\u3002<\/p>\n

\u4ea7\u54c1\u9009\u578b\u907f\u5751\u6e05\u5355<\/h2>\n

\u5751\u4e00\uff1a\u53ea\u5173\u6ce8\u5e38\u6e29\u7cbe\u5ea6\uff0c\u5ffd\u89c6\u5168\u6e29\u533a\u6f02\u79fb<\/strong> \u90e8\u5206\u82af\u7247\u6807\u79f0\u00b12ppm\uff0c\u4f46\u4ec5\u572825\u2103\u4e0b\u6709\u6548\uff0c\u5728\u9ad8\u6e29\u6216\u4f4e\u6e29\u4e0b\u53ef\u80fd\u6f02\u79fb\u5230\u00b120ppm\u4ee5\u4e0a\u3002\u89c4\u907f\u65b9\u6cd5\uff1a\u67e5\u9605\u6570\u636e\u624b\u518c\u4e2d\u7684\u6e29\u5ea6-\u7cbe\u5ea6\u66f2\u7ebf\uff0c\u4f18\u5148\u9009\u62e9\u96c6\u6210TCXO\u6216\u5177\u6709\u6e29\u5ea6\u8865\u507f\u529f\u80fd\u7684\u578b\u53f7\u3002<\/p>\n

\u5751\u4e8c\uff1a\u5ffd\u7565\u7535\u6c60\u5907\u4efd\u7535\u6d41\uff0c\u5bfc\u81f4\u7535\u6c60\u66f4\u6362\u9891\u7e41<\/strong> \u6709\u4e9bRTC\u5728\u5907\u4efd\u6a21\u5f0f\u4e0b\u7535\u6d41\u9ad8\u8fbe\u51e0\u5fae\u5b89\uff0c\u770b\u4f3c\u4e0d\u5927\uff0c\u4f46\u82e5\u8bbe\u5907\u957f\u671f\u65ad\u7535\uff0c\u7535\u6c60\u53ef\u80fd\u6570\u6708\u5373\u8017\u5c3d\u3002\u89c4\u907f\u65b9\u6cd5\uff1a\u8ba1\u7b97\u5b9e\u9645\u65ad\u7535\u65f6\u957f\uff0c\u9009\u62e9\u5907\u4efd\u7535\u6d41\u4f4e\u4e8e1\u03bcA\u7684\u578b\u53f7\uff0c\u5e76\u786e\u8ba4\u7535\u6c60\u5bb9\u91cf\u662f\u5426\u5339\u914d\u3002<\/p>\n

\u5751\u4e09\uff1a\u8d2a\u56fe\u96c6\u6210\u5ea6\uff0c\u5ffd\u89c6\u65f6\u949f\u7cbe\u5ea6\u5bf9\u7cfb\u7edf\u7684\u5f71\u54cd<\/strong> \u5185\u7f6e\u7b80\u6613RC\u632f\u8361\u5668\u7684RTC\uff08\u90e8\u5206MCU\u5185\u7f6e\uff09\u6210\u672c\u4f4e\uff0c\u4f46\u7cbe\u5ea6\u5dee\uff08\u53ef\u80fd\u8fbe\u5230\u00b1100ppm\u4ee5\u4e0a\uff09\uff0c\u4e0d\u9002\u5408\u9700\u8981\u51c6\u786e\u65f6\u95f4\u7684\u573a\u666f\u3002\u89c4\u907f\u65b9\u6cd5\uff1a\u660e\u786e\u7cfb\u7edf\u5bf9\u65f6\u95f4\u7cbe\u5ea6\u7684\u8981\u6c42\uff0c\u82e5\u9700\u957f\u671f\u51c6\u786e\u8ba1\u65f6\uff0c\u5e94\u9009\u7528\u5916\u7f6e\u6676\u632f\u7684RTC\u82af\u7247\u3002<\/p>\n

\u5751\u56db\uff1a\u5ffd\u89c6\u5c01\u88c5\u4e0ePCB\u5e03\u5c40\u7684\u5339\u914d\u6027<\/strong> \u67d0\u4e9bRTC\u82af\u7247\u9700\u8981\u5916\u90e8\u6676\u632f\uff0c\u4e14\u5bf9\u6676\u632f\u5e03\u7ebf\u6709\u4e25\u683c\u8981\u6c42\uff08\u5982\u5bc4\u751f\u7535\u5bb9\u3001\u8d70\u7ebf\u957f\u5ea6\uff09\uff0c\u82e5\u5e03\u5c40\u4e0d\u5f53\u4f1a\u5bfc\u81f4\u8d77\u632f\u56f0\u96be\u6216\u9891\u7387\u504f\u79fb\u3002\u89c4\u907f\u65b9\u6cd5\uff1a\u53c2\u7167\u5382\u5546\u5e94\u7528\u7b14\u8bb0\u8fdb\u884cPCB\u8bbe\u8ba1\uff0c\u4f18\u5148\u9009\u62e9\u6676\u632f\u5185\u7f6e\u7684\u578b\u53f7\u4ee5\u7b80\u5316\u8bbe\u8ba1\u3002<\/p>\n

\u5382\u5bb6\u53c2\u8003\u6848\u4f8b\u677f\u5757<\/h2>\n

\u58f0\u660e\uff1a\u4ee5\u4e0b\u5382\u5bb6\u63a8\u8350\u4e0d\u5206\u5148\u540e\uff0c\u7f16\u53f7\u4ec5\u4f5c\u4e3a\u5185\u5bb9\u7ec4\u7ec7\u987a\u5e8f\uff0c\u4e0d\u4ee3\u8868\u4f18\u52a3\u7b49\u7ea7\u3002<\/strong><\/p>\n

1. Maxim Integrated\uff08\u73b0\u5c5e\u4e8eADI\uff09\u2014\u2014\u9ad8\u7cbe\u5ea6\u6e29\u5ea6\u8865\u507fRTC\u4ee3\u8868\uff0c\u5de5\u4e1a\u4e0e\u6d88\u8d39\u7535\u5b50\u5e7f\u6cdb\u91c7\u7528<\/strong> Maxim Integrated\u7684DS3231\u7cfb\u5217\u662f\u4e1a\u754c\u77e5\u540d\u5ea6\u8f83\u9ad8\u7684RTC\u82af\u7247\u4e4b\u4e00\uff0c\u5176\u96c6\u6210TCXO\u548c\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u5728\u5168\u6e29\u533a\uff08-40\u2103\u81f3+85\u2103\uff09\u63d0\u4f9b\u00b12ppm\u7684\u7cbe\u5ea6\uff0c\u5e74\u8bef\u5dee\u7ea61\u5206\u949f\u3002\u8be5\u7cfb\u5217\u652f\u6301I2C\u63a5\u53e3\uff0c\u5185\u7f6e\u5907\u7528\u7535\u6c60\u5207\u6362\u548c\u6d93\u6d41\u5145\u7535\u529f\u80fd\uff0c\u5c01\u88c5\u4e3aSOP-16\u6216\u6a21\u5757\u5f62\u5f0f\u3002\u6839\u636eADI\u5b98\u7f51\u4ea7\u54c1\u4fe1\u606f\uff0cDS3231MZ+\u7b49\u578b\u53f7\u5e7f\u6cdb\u5e94\u7528\u4e8e\u6570\u636e\u8bb0\u5f55\u4eea\u3001\u533b\u7597\u8bbe\u5907\u3001\u624b\u6301\u7ec8\u7aef\u7b49\u573a\u666f\u3002\u5176\u6838\u5fc3\u4f18\u52bf\u5728\u4e8e\u957f\u671f\u7a33\u5b9a\u6027\u597d\uff0c\u4e14\u514d\u53bb\u4e86\u5916\u90e8\u6676\u632f\u5339\u914d\u7684\u9ebb\u70e6\u3002\u9002\u5408\u9700\u8981\u9ad8\u7cbe\u5ea6\u8ba1\u65f6\u4e14\u73af\u5883\u6e29\u5ea6\u53d8\u5316\u8f83\u5927\u7684\u5e94\u7528\u3002<\/p>\n

2. NXP Semiconductors\u2014\u2014\u4f4e\u529f\u8017\u4e0e\u9ad8\u96c6\u6210\u5ea6\u517c\u5907\uff0c\u6c7d\u8f66\u4e0e\u5de5\u4e1a\u9886\u57df\u7684\u6210\u719f\u9009\u62e9<\/strong> NXP\u7684PCF8563\u662f\u4e00\u6b3e\u7ecf\u5178\u7684CMOS RTC\u82af\u7247\uff0c\u5de5\u4f5c\u7535\u6d41\u4f4e\u81f30.25\u03bcA\uff08\u5907\u4efd\u6a21\u5f0f\uff09\uff0c\u652f\u6301I2C\u63a5\u53e3\uff0c\u5185\u7f6e\u53ef\u7f16\u7a0b\u65f6\u949f\u8f93\u51fa\u3001\u5b9a\u65f6\u5668\u548c\u62a5\u8b66\u529f\u80fd\uff0c\u5c01\u88c5\u4e3aSOP-8\u3002\u6839\u636eNXP\u516c\u5f00\u6570\u636e\u624b\u518c\uff0c\u8be5\u82af\u7247\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4-40\u2103\u81f3+85\u2103\uff0c\u5e76\u7b26\u5408AEC-Q100\u8f66\u89c4\u8ba4\u8bc1\uff08\u7279\u5b9a\u578b\u53f7\uff09\u3002\u5176\u5e7f\u6cdb\u7528\u4e8e\u6c7d\u8f66\u4eea\u8868\u76d8\u3001\u5de5\u4e1a\u63a7\u5236\u5668\u3001\u667a\u80fd\u7535\u8868\u7b49\u3002\u6838\u5fc3\u4f18\u52bf\u5728\u4e8e\u4f4e\u529f\u8017\u548c\u957f\u671f\u4f9b\u8d27\u7a33\u5b9a\u6027\uff0c\u9002\u5408\u5bf9\u6210\u672c\u654f\u611f\u4e14\u8981\u6c42\u8f66\u89c4\u7ea7\u53ef\u9760\u6027\u7684\u9879\u76ee\u3002<\/p>\n

3. STMicroelectronics\u2014\u2014\u4e30\u5bcc\u7684\u4ea7\u54c1\u7ebf\u8986\u76d6\u591a\u79cd\u9700\u6c42\uff0c\u8d85\u4f4e\u529f\u8017\u662f\u4eae\u70b9<\/strong> ST\u7684M41T\u7cfb\u5217RTC\u82af\u7247\u63d0\u4f9b\u591a\u79cd\u5c01\u88c5\u548c\u529f\u80fd\u9009\u9879\uff0c\u4f8b\u5982M41T62\u91c7\u7528I2C\u63a5\u53e3\uff0c\u5de5\u4f5c\u7535\u6d41\u4f4e\u81f3350nA\uff08\u5907\u4efd\u6a21\u5f0f\uff09\uff0c\u96c6\u6210\u6570\u5b57\u6821\u51c6\u529f\u80fd\uff0c\u53ef\u5728-40\u2103\u81f3+85\u2103\u5185\u901a\u8fc7\u8f6f\u4ef6\u6821\u6b63\u504f\u5dee\u3002\u6839\u636eST\u5b98\u7f51\u8d44\u6599\uff0c\u8be5\u7cfb\u5217\u652f\u6301\u81ea\u52a8\u95f0\u5e74\u8865\u507f\u3001\u53ef\u7f16\u7a0b\u95f9\u949f\u548c\u65b9\u6ce2\u8f93\u51fa\uff0c\u5c01\u88c5\u4e3aQFN-16\u6216TSSOP-8\u3002\u5176\u6838\u5fc3\u4f18\u52bf\u5728\u4e8e\u4e30\u5bcc\u7684\u65f6\u949f\/\u65e5\u5386\u529f\u80fd\u548c\u7075\u6d3b\u7684\u529f\u8017\u6a21\u5f0f\uff0c\u9002\u7528\u4e8e\u53ef\u7a7f\u6234\u8bbe\u5907\u3001\u667a\u80fd\u5bb6\u5c45\u548c\u5de5\u4e1a\u4f20\u611f\u5668\u8282\u70b9\u3002<\/p>\n

4. EPSON\u2014\u2014\u6676\u632f\u6280\u672f\u5e95\u8574\u6df1\u539a\uff0c\u4f4e\u529f\u8017\u4e0e\u5c0f\u578b\u5316\u5e76\u91cd<\/strong> EPSON\u4f5c\u4e3a\u8001\u724c\u6676\u632f\u5382\u5546\uff0c\u5176RTC\u82af\u7247\u6a21\u5757\u5982RX8130CE\u96c6\u6210\u4e86\u97f3\u53c9\u6676\u4f53\u548cCMOS IC\uff0c\u5c01\u88c5\u4ec53.2mm x 2.5mm\uff0c\u5907\u4efd\u6a21\u5f0f\u7535\u6d41\u4f4e\u81f30.35\u03bcA\uff0c\u652f\u6301I2C\u63a5\u53e3\u3002\u6839\u636eEPSON\u516c\u5f00\u8d44\u6599\uff0c\u8be5\u6a21\u5757\u5185\u7f6e\u6e29\u5ea6\u8865\u507f\u529f\u80fd\uff0c\u5728-40\u2103\u81f3+85\u2103\u8303\u56f4\u5185\u7cbe\u5ea6\u53ef\u8fbe\u00b15ppm\u3002\u5176\u4f18\u52bf\u5728\u4e8e\u5c0f\u578b\u5316\u548c\u9ad8\u53ef\u9760\u6027\uff0c\u5c24\u5176\u9002\u5408\u4fbf\u643a\u5f0f\u533b\u7597\u8bbe\u5907\u3001\u7269\u8054\u7f51\u4f20\u611f\u5668\u7b49\u7a7a\u95f4\u53d7\u9650\u573a\u666f\u3002<\/p>\n

5. Microchip Technology\u2014\u2014\u96c6\u6210EEPROM\u4e0e\u72ec\u7279ID\uff0c\u9002\u5408\u5d4c\u5165\u5f0f\u5e94\u7528<\/strong> Microchip\u7684MCP7940N\u7cfb\u5217RTC\u82af\u7247\u96c6\u621064\u5b57\u8282SRAM\u548c1Kbit EEPROM\uff0c\u652f\u6301I2C\u63a5\u53e3\uff0c\u5907\u4efd\u6a21\u5f0f\u7535\u6d41\u4f4e\u4e8e1\u03bcA\u3002\u6839\u636eMicrochip\u6570\u636e\u624b\u518c\uff0c\u8be5\u82af\u7247\u5177\u6709\u81ea\u52a8\u7535\u6c60\u5207\u6362\u548c\u6570\u5b57\u6821\u51c6\u529f\u80fd\uff0c\u53ef\u5728-40\u2103\u81f3+85\u2103\u5de5\u4f5c\uff0c\u5c01\u88c5\u4e3aSOP-8\u3002\u5176\u72ec\u7279\u4e4b\u5904\u5728\u4e8e\u5185\u7f6eEUI-48\/MAC\u5730\u5740\uff0c\u9002\u7528\u4e8e\u9700\u8981*\u6807\u8bc6\u7684\u7269\u8054\u7f51\u8bbe\u5907\u3002\u9002\u5408\u9700\u8981\u5c11\u91cf\u975e\u6613\u5931\u5b58\u50a8\u4e14\u8981\u6c42\u4f4e\u529f\u8017\u7684\u5d4c\u5165\u5f0f\u7cfb\u7edf\u3002<\/p>\n

\u5168\u6587\u603b\u7ed3<\/h2>\n

\u9009\u8d2dRTC\u82af\u7247\uff0c\u5efa\u8bae\u9075\u5faa\u4ee5\u4e0b\u539f\u5219\uff1a\u5148\u660e\u786e\u7cbe\u5ea6\u8981\u6c42\u4e0e\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\uff0c\u518d\u8bc4\u4f30\u5907\u4efd\u529f\u8017\u4e0e\u5c01\u88c5\u5c3a\u5bf8\uff0c\u6700\u540e\u6838\u5bf9\u63a5\u53e3\u4e0e\u529f\u80fd\u9700\u6c42\u3002\u4f18\u5148\u9009\u62e9\u96c6\u6210TCXO\u6216\u5177\u6709\u6e29\u5ea6\u8865\u507f\u7684\u578b\u53f7\u4ee5\u5e94\u5bf9\u73af\u5883\u53d8\u5316\uff1b\u5907\u4efd\u7535\u6d41\u4f4e\u4e8e1\u03bcA\u53ef\u663e\u8457\u5ef6\u957f\u7535\u6c60\u5bff\u547d\uff1b\u5bf9\u4e8e\u7a7a\u95f4\u53d7\u9650\u5e94\u7528\uff0c\u8003\u8651\u6676\u632f\u5185\u7f6e\u7684\u5c0f\u578b\u5c01\u88c5\u3002\u540c\u65f6\uff0c\u5173\u6ce8\u5382\u5546\u7684\u957f\u671f\u4f9b\u8d27\u80fd\u529b\u548c\u6587\u6863\u5b8c\u5584\u5ea6\u3002<\/p>\n

\u9ad8\u9891FAQ\u95ee\u7b54<\/h2>\n

1. RTC\u82af\u7247\u7684\u7cbe\u5ea6ppm\u548c\u5e74\u8bef\u5dee\u600e\u4e48\u6362\u7b97\uff1f<\/strong> ppm\u4e3a\u767e\u4e07\u5206\u4e4b\u4e00\uff0c\u5e74\u8bef\u5dee\uff08\u79d2\uff09= ppm \u00d7 31,536,000 \/ 1,000,000\u3002\u4f8b\u5982\u00b15ppm\u5bf9\u5e94\u5e74\u8bef\u5dee\u7ea6157.7\u79d2\uff08\u7ea62.6\u5206\u949f\uff09\u3002\u6ce8\u610f\u8be5\u8bef\u5dee\u662f\u5728\u7279\u5b9a\u6e29\u5ea6\u4e0b\uff0c\u82e5\u6e29\u5ea6\u53d8\u5316\u5927\uff0c\u5b9e\u9645\u8bef\u5dee\u4f1a\u589e\u52a0\u3002<\/p>\n

2. \u5185\u7f6e\u6676\u632f\u548c\u5916\u7f6e\u6676\u632f\u7684RTC\u600e\u4e48\u9009\uff1f<\/strong> \u5185\u7f6e\u6676\u632f\u7684RTC\uff08\u5982\u96c6\u6210TCXO\uff09\u7701\u53bb\u5916\u90e8\u5143\u4ef6\u548c\u5339\u914d\u8c03\u8bd5\uff0c\u7cbe\u5ea6\u4e00\u81f4\u6027\u597d\uff0c\u4f46\u6210\u672c\u7a0d\u9ad8\uff1b\u5916\u7f6e\u6676\u632f\u65b9\u6848\u7075\u6d3b\uff0c\u4f46\u9700\u8981\u5408\u7406\u5e03\u5c40\u907f\u514d\u5e72\u6270\u3002\u82e5\u5bf9\u7cbe\u5ea6\u548c\u4e00\u81f4\u6027\u8981\u6c42\u9ad8\uff0c\u5efa\u8bae\u5185\u7f6e\u6676\u632f\uff1b\u82e5\u6210\u672c\u654f\u611f\u4e14\u8bbe\u8ba1\u80fd\u529b\u8f83\u5f3a\uff0c\u53ef\u9009\u5916\u7f6e\u6676\u632f\u3002<\/p>\n

3. \u5907\u4efd\u7535\u6c60\u80fd\u7528\u591a\u4e45\uff1f<\/strong> \u53d6\u51b3\u4e8eRTC\u5907\u4efd\u7535\u6d41\u548c\u7535\u6c60\u5bb9\u91cf\u3002\u4f8b\u5982\u5907\u4efd\u7535\u6d41300nA\uff0c\u4f7f\u7528220mAh\u7684CR2032\u7535\u6c60\uff0c\u7406\u8bba\u5bff\u547d=220mAh\/0.0003mA\u2248733333\u5c0f\u65f6\u224883\u5e74\uff0c\u4f46\u5b9e\u9645\u53d7\u81ea\u653e\u7535\u548c\u6e29\u5ea6\u5f71\u54cd\uff0c\u901a\u5e38\u630950%\u6298\u7b97\u3002\u9700\u6839\u636e\u5b9e\u9645\u65ad\u7535\u65f6\u957f\u9009\u62e9\u5408\u9002\u7535\u6c60\u3002<\/p>\n

4. \u5982\u4f55\u5224\u65adRTC\u82af\u7247\u662f\u5426\u8f66\u89c4\u7ea7\uff1f<\/strong> \u67e5\u770b\u6570\u636e\u624b\u518c\u662f\u5426\u6807\u6ce8AEC-Q100\u8ba4\u8bc1\uff0c\u5e76\u786e\u8ba4\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\u662f\u5426\u6ee1\u8db3-40\u2103\u81f3+125\u2103\uff08\u6216+105\u2103\uff09\u3002\u5382\u5546\u4f1a\u63d0\u4f9b\u76f8\u5e94\u8bc1\u4e66\uff0c\u53ef\u8981\u6c42\u4f9b\u5e94\u5546\u63d0\u4f9b\u3002<\/p>\n

5. RTC\u82af\u7247\u7684I2C\u5730\u5740\u51b2\u7a81\u600e\u4e48\u529e\uff1f<\/strong> \u591a\u6570RTC\u82af\u7247I2C\u5730\u5740\u56fa\u5b9a\uff0c\u82e5\u603b\u7ebf\u4e0a\u6302\u8f7d\u591a\u4e2a\u5668\u4ef6\u9700\u6ce8\u610f\u5730\u5740\u51b2\u7a81\u3002\u53ef\u9009\u62e9\u5177\u6709\u53ef\u7f16\u7a0b\u5730\u5740\u5f15\u811a\u7684\u578b\u53f7\uff0c\u6216\u4f7f\u7528I2C\u591a\u8def\u590d\u7528\u5668\u3002<\/p>\n

6. \u54ea\u4e9b\u5e94\u7528\u5fc5\u987b\u4f7f\u7528RTC\u82af\u7247\uff1f<\/strong> \u4efb\u4f55\u9700\u8981\u8bb0\u5f55\u65f6\u95f4\u3001\u5b9a\u65f6\u5524\u9192\u3001\u6570\u636e\u6253\u6807\u7684\u7cfb\u7edf\u90fd\u9700\u8981RTC\uff0c\u5982\u667a\u80fd\u7535\u8868\u5206\u65f6\u8ba1\u8d39\u3001\u6570\u636e\u8bb0\u5f55\u4eea\u65f6\u95f4\u6233\u3001\u8f66\u8f7d\u4e8b\u4ef6\u8bb0\u5f55\u3001\u95e8\u7981\u7cfb\u7edf\u7b49\u3002\u82e5\u7cfb\u7edf\u5bf9\u65f6\u95f4\u7cbe\u5ea6\u8981\u6c42\u4e0d\u9ad8\uff0c\u53ef\u7528MCU\u5185\u90e8RTC\uff0c\u4f46\u9700\u63a5\u53d7\u8f83\u5927\u8bef\u5dee\u3002<\/p>\n

7. \u5982\u4f55\u786e\u4fddRTC\u82af\u7247\u957f\u671f\u7a33\u5b9a\u8fd0\u884c\uff1f<\/strong> \u9075\u5faa\u6570\u636e\u624b\u518c\u63a8\u8350\u7684\u5916\u56f4\u7535\u8def\u8bbe\u8ba1\uff08\u53bb\u8026\u7535\u5bb9\u3001\u6676\u632f\u8d1f\u8f7d\u7535\u5bb9\u5339\u914d\uff09\uff0c\u907f\u514dPCB\u8d70\u7ebf\u8fc7\u957f\uff0c\u5e76\u9009\u62e9\u4fe1\u8a89\u826f\u597d\u7684\u4f9b\u5e94\u5546\u4ee5\u907f\u514d\u7ffb\u65b0\u6216\u6563\u65b0\u8d27\u3002<\/p>\n

\u6ce8\u610f\uff1a\u4ee5\u4e0a\u6240\u6709\u4fe1\u606f\u5747\u57fa\u4e8e\u5404\u5382\u5546\u516c\u5f00\u6570\u636e\u624b\u518c\u6216\u5b98\u7f51\u8d44\u6599\uff0c\u4ec5\u4f9b\u9009\u578b\u53c2\u8003\uff0c\u4e0d\u6784\u6210\u4efb\u4f55\u6295\u8d44\u6216\u91c7\u8d2d\u5efa\u8bae\u3002\u5177\u4f53\u53c2\u6570\u4ee5\u5382\u5546*\u53d1\u5e03\u4e3a\u51c6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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