{"id":1531,"date":"2018-11-21T09:49:41","date_gmt":"2018-11-21T09:49:41","guid":{"rendered":""},"modified":"2018-11-21T17:54:37","modified_gmt":"2018-11-21T09:54:37","slug":"rtc+%e6%97%b6%e9%92%9f%e5%81%b6%e5%8f%91%e6%80%a7%e5%bb%b6%e6%97%b6%e6%88%96%e8%b6%85%e6%97%b6%e6%80%8e%e4%b9%88%e5%8a%9e%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1531","title":{"rendered":"RTC \u65f6\u949f\u5076\u53d1\u6027\u5ef6\u65f6\u6216\u8d85\u65f6\u600e\u4e48\u529e\uff1f"},"content":{"rendered":"

\u5728\u975e\u5e38\u6e29\u7684\u5de5\u4f5c\u73af\u5883\u4e0b\uff0cRTC\u65f6\u949f\u51fa\u73b0\u5076\u53d1\u6027\u7684\u5ef6\u65f6\u6216\u8005\u8d85\u65f6\u73b0\u8c61\uff0c\u6210\u719f\u7684RTC\u7535\u8def\u8bbe\u8ba1\u770b\u4f3c\u7b80\u5355\uff0c\u4f46\u5982\u4f55\u4fdd\u8bc1RTC\u65f6\u949f\u7684\u7cbe\u786e\u5ea6\uff1b\u5728\u51fa\u73b0\u5076\u53d1\u6027\u5f02\u5e38\u73b0\u8c61\u65f6\uff0c\u5982\u4f55\u5feb\u901f\u5b9a\u4f4d\u548c\u89e3\u51b3\u95ee\u9898\uff1b\u672c\u6587\u5c06\u5206\u4eab\u4e00\u4e2a\u6848\u4f8b\u3002

\n

\n\u4e00\u3001<\/strong>\u6848\u4f8b\u60c5\u51b5<\/strong>

\n\u5de5\u63a7\u677f\u4f7f\u7528\u4e86NXP\u7684PCF8563 RTC \u82af\u7247\u65b9\u6848\uff0c\u5728\u7814\u53d1\u505a\u73af\u5883\u6e29\u5ea6\u6478\u5e95\u6d4b\u8bd5\u7684\u65f6\u5019\uff0c RTC\u65f6\u949f\u51fa\u73b0\u5076\u53d1\u6027\u5ef6\u65f6\u6216\u8005\u8d85\u524d\u73b0\u8c61\uff0c\u4e8e\u662f\u7814\u53d1\u5c55\u5f00\u4e00\u7cfb\u5217\u7684\u95ee\u9898\u5b9a\u4f4d\u3002

\n

\n\u4e8c\u3001\u6392\u67e5\u5206\u6790<\/strong>

\n1\u3001\u5de5\u63a7\u677f\u4f7f\u7528\u4e86NXP\u7684PCF8563 RTC \u82af\u7247\u65b9\u6848\uff0c\u8be5\u65b9\u6848\u662f\u5916\u7f6e32.768kHz\u7684\u77f3\u82f1\u6676\u4f53\u548c\u7535\u5bb9\uff0c\u8be5RTC\u82af\u7247\u7684\u8f93\u51fa\u7cbe\u5ea6\u53d6\u51b3\u4e8e\u5176\u5916\u63a5\u7684\u77f3\u82f1\u6676\u4f53\u8f93\u51fa\u7684\u65f6\u949f\u9891\u7387\u662f\u5426\u7cbe\u51c6\u3002\u77f3\u82f1\u6676\u4f53\u672c\u8eab\u8f93\u51fa\u9891\u7387\u5e26\u6709\u4e00\u5b9a\u7684\u8bef\u5dee\uff0c\u5e38\u6e2925\u2103\u4e0b\uff0c\u9891\u7387\u7684\u8bef\u5dee\u4e3a±20ppm\uff0c\u5e73\u5747\u8bef\u5dee\u53ef\u8fbe5\u5206\u949f\/\u5e74\u3002\u4e14\u968f\u7740\u65f6\u95f4\u7684\u589e\u52a0\uff0c\u6676\u4f53\u7535\u8def\u5143\u4ef6\u7684\u7f13\u6162\u53d8\u5316\u4f1a\u9020\u6210\u957f\u671f\u6027\u7684\u9891\u7387\u6f02\u79fb\u3002\u540c\u65f6\uff0c\u5728\u5916\u90e8\u6e29\u5ea6\u8f83\u4e3a\u6781\u7aef\u7684\u65f6\u5019\uff0c\u65f6\u949f\u9707\u8361\u56de\u8def\u53ef\u80fd\u51fa\u73b0\u5f02\u5e38\uff0c\u5f71\u54cd\u5230RTC\u7684\u6b63\u5e38\u8ba1\u65f6\u3002

\n

\n2\u3001\u5de5\u63a7\u677fRTC\u82af\u7247\u4f9b\u7535\u7535\u6c60\u9009\u7528\u4e86\u578b\u53f7\u4e3aCR2032\u7684\u9502\u4e8c\u6c27\u5316\u9530\u7535\u6c60\uff0c\u8be5\u7535\u6c60\u7406\u8bba\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\u662f-30\u2103~60\u2103\u3002\u548c\u5176\u4ed6\u9502\u7535\u6c60\u7c7b\u4f3c\uff0c\u82e5\u5916\u90e8\u6e29\u5ea6\u8f83\u4e3a\u6781\u7aef\u7684\u65f6\u5019\uff0c\u4f1a\u6539\u53d8\u5176\u5185\u90e8\u7684\u5316\u5b66\u53cd\u5e94\uff0c\u5bfc\u81f4\u7535\u6c60\u5bff\u547d\u7684\u964d\u4f4e\u6216\u8005\u7535\u538b\u5f02\u5e38\u7684\u98ce\u9669\uff0c\u4ece\u800c\u5f71\u54cdRTC\u7535\u8def\u7684\u6b63\u5e38\u5de5\u4f5c\u3002<\/span><\/span>

\n
<\/p>\n

\n\t <\/span><\/div>\n
\n\t\u56fe 1 PCF8563\u53c2\u8003\u7535\u8def\u56fe<\/span>

\n\t <\/div>\n

\u4e09\u3001\u89e3\u51b3\u65b9\u6848<\/strong>

\n\u6781\u9650\u6e29\u5ea6\u4e0b\u957f\u65f6\u95f4\u7684\u9ad8\u7cbe\u5ea6\u4fdd\u8bc1\uff0c\u6709\u4ee5\u4e0b\u7684\u89e3\u51b3\u65b9\u6848\uff1a<\/strong>

\n1\u3001\u9009\u62e9\u5e26\u6709\u6e29\u5ea6\u8865\u507f\u7684RTC\u82af\u7247\u5982EPSON\u7684RX-8025T\u3002\u8fd9\u6b3e\u82af\u7247\u662f\u5185\u7f6e32.768kHz\u7684\u6676\u4f53\uff0c\u5177\u6709\u9ad8\u7cbe\u5ea6\u7684\u6e29\u5ea6\u8865\u507f\u529f\u80fd\uff0c\u8f93\u51fa\u7684\u6ce2\u5f62\u90fd\u662f\u7ecf\u8fc7\u6e29\u5ea6\u8865\u507f\u6821\u51c6\u8fc7\u7684\uff0c\u8fd9\u6837\u53ef\u4ee5\u63d0\u9ad8RTC\u7684\u7a33\u5b9a\u6027\u548c\u7cbe\u5ea6\u3002\u56e0\u4e3a\u5185\u5d4c\u7684\u6676\u4f53\u5df2\u7ecf\u7ecf\u8fc7\u9ad8\u6e29\u8001\u5316\u5904\u7406\uff0c\u6bd4\u72ec\u7acb\u7684\u6676\u4f53\u6709\u66f4\u597d\u7684\u7a33\u5b9a\u6027\uff0c\u7cbe\u5ea6\u8bef\u5dee\u5728-40\u2103~85\u2103\u8303\u56f4\u5185\u5c0f\u4e8e±5ppm\u3002

\n

\n2\u3001\u9009\u62e9\u5de5\u4e1a\u7ea7\u7535\u6c60\uff08\u4f8b\u5982\uff1aFANSO ER14505\uff09\uff0c\u7406\u8bba\u4e0a\u5728\u5de5\u4f5c\u6e29\u5ea6-40~85°\u8303\u56f4\u5185\u80fd\u6b63\u5e38\u5de5\u4f5c\u3002\u53c2\u8003\u7535\u8def\u56fe\u5982\u56fe2\u6240\u793a\uff1a<\/span><\/span>

\n
<\/p>\n

\n\t <\/span><\/div>\n
\n\t\u56fe 2 RX-8025T\u53c2\u8003\u7535\u8def\u56fe<\/span>

\n\t <\/div>\n

\u7531\u56fe2\u53ef\u77e5\uff0cRTC\u82af\u7247\u5de5\u4f5c\u7535\u6e90\u7531\u7cfb\u7edfVCC_3.3\u7535\u6e90\u548c\u7535\u6c60\u7535\u6e90\u4e24\u90e8\u5206\u7ec4\u6210\u3002\u6b64\u7535\u6e90\u7535\u8def\u7684\u8bbe\u8ba1\u76ee\u7684\u662f\u5f53\u6709\u5916\u90e8\u7535\u6e90\u4f9b\u7535\u65f6\uff0cRTC\u65f6\u949f\u5de5\u4f5c\u65f6\u4f7f\u7528\u7531\u5916\u90e8\u7535\u6e90\u7ecfLDO\u8f6c\u5316\u800c\u6765\u7684VCC_3.3\u7535\u6e90\uff0c\u5f53\u5916\u90e8\u7535\u6e90\u505c\u6b62\u4f9b\u7535\u65f6\u5c31\u81ea\u52a8\u5207\u6362\u5230\u7535\u6c60\u7535\u6e90\u4f9b\u7535\u3002\u8fd9\u6837\u53ef\u4ee5\u4fdd\u8bc1RTC\u82af\u7247\u4e00\u76f4\u80fd\u591f\u6b63\u5e38\u5730\u5de5\u4f5c\uff0c\u540c\u65f6\u53ef\u4ee5\u5ef6\u957f\u7535\u6c60\u7684\u4f7f\u7528\u65f6\u95f4\u3002\u6b64\u7535\u8def\u7684\u8bbe\u8ba1\u5982\u4ee5\u4e0b\u6240\u8ff0\uff1a

\n

\n1\uff09 \u7535\u6e90\u5207\u6362\u7535\u8def\u8bbe\u8ba1<\/strong>

\n\u7531RX-8025T\u82af\u7247\u7684\u6570\u636e\u624b\u518c\u4e0a\u53ef\u77e5\uff0c\u5176\u5de5\u4f5c\u7535\u538b\u8303\u56f4\u662f1.7V\u52305.5V\uff1b\u7cfb\u7edf\u7535\u6e90\u4e3a3.3V\u3001\u5de5\u4e1a\u7ea7\u7535\u6c60ER14505\u7535\u538b\u4e3a3.6V\uff1b\u53ef\u4ee5\u901a\u8fc7\u4e8c\u6781\u7ba1\u7684\u6b63\u5411\u5bfc\u901a\u7279\u6027\u6765\u81ea\u52a8\u5207\u6362\u7cfb\u7edf\u7535\u6e90\u548c\u7535\u6c60\u7535\u6e90\u7684\u4f9b\u7535\u72b6\u6001\uff0c\u4f7f\u5f97RTC\u82af\u7247\u80fd\u591f\u4fdd\u6301\u6b63\u5e38\u5de5\u4f5c\u72b6\u6001\u3002

\n

\n\u7531\u4e8e\u7cfb\u7edf\u7535\u6e90\u7535\u538b\u4e3a3.3V\uff0c\u7535\u6c60\u7535\u538b\u4e3a3.6V\uff1b\u5982\u679c\u8981\u505a\u5230\u4f18\u5148\u4f7f\u7528\u7cfb\u7edf\u7535\u6e90\uff0c\u90a3\u4e48\u5c31\u9700\u8981\u7cfb\u7edf\u7535\u6e90\u7ecf\u8fc7\u4e8c\u6781\u7ba1\u540e\u7684\u7535\u538b\u6bd4\u7535\u6c60\u7ecf\u8fc7\u4e8c\u6781\u7ba1\u540e\u7684\u7535\u538b\u8981\u9ad8\uff0c\u8fd9\u6837\u624d\u80fd\u4fdd\u8bc1\u7531\u7cfb\u7edf\u7535\u6e90\u4f18\u5148\u5de5\u4f5c\u3002\u53ef\u4ee5\u901a\u8fc7\u9009\u62e9\u4e24\u53ea\u4e0d\u540c\u7ba1\u538b\u964d\u7684\u4e8c\u6781\u7ba1\u6765\u5b9e\u73b0\uff0c\u4e8c\u6781\u7ba1SS14\u7684\u6b63\u5411\u5bfc\u901a\u7535\u538b\u4e3a0.2V\u5de6\u53f3\uff0c1N4148\u7684\u6b63\u5411\u5bfc\u901a\u7535\u538b\u4e3a0.7V\u5de6\u53f3\u3002\u90a3\u4e48\u53ef\u4ee5\u5728\u7cfb\u7edf\u7535\u6e90\u7ebf\u8def\u4e0a\u4e32\u63a5\u4e00\u53eaSS14\u4e8c\u6781\u7ba1\uff0c\u800c\u5728\u7535\u6c60\u4f9b\u7535\u7ebf\u8def\u4e0a\u4e32\u63a5\u4e00\u53ea1N4148\u4e8c\u6781\u7ba1\uff1b\u8fd9\u6837\u5f53\u5916\u90e8\u4f9b\u7535\u65f6\uff0c\u7cfb\u7edf\u7535\u6e90\u7ecf\u8fc7SS14\u540e\u5f97\u5230\u7684\u7535\u538b\u503c\u5927\u4e8e\u7535\u6c60\u7ecf\u8fc71N4148\u540e\u7684\u7535\u538b\u503c\uff0c\u6b64\u65f6\u7531\u4e3b\u7535\u6e90\u4f9b\u7535\uff1b\u5f53\u5916\u90e8\u7535\u6e90\u505c\u6b62\u4f9b\u7535\u540e\uff0c\u7535\u8def\u81ea\u52a8\u5207\u6362\u6210\u7535\u6c60\u4f9b\u7535\u72b6\u6001\u3002<\/span><\/span>

\n
<\/p>\n

\n\t <\/span><\/div>\n
\n\t\u56fe 3 \u7535\u6e90\u5207\u6362\u7535\u8def<\/span>

\n\t <\/div>\n

2\uff09 \u7535\u538b\u6ede\u540e\u5904\u7406<\/strong>

\nER14505\u7535\u6c60\u662f\u4e00\u79cd\u4f9b\u7535\u7535\u538b\u4e3a3.6V \uff0c\u5bb9\u91cf\u4e3a2700mAh\u7684\u9502\u4e9a\u786b\u9170\u6c2f\u7535\u6c60\uff1b\u5b83\u7684\u81ea\u8eab\u5bb9\u91cf\u635f\u8017\u6781\u5c0f\uff0c\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u3002\u4ee5\u5f85\u673a\u7535\u6d41\u4e3a20uA\u8ba1\u7b97\uff0c\u7535\u6c60\u7684\u4f9b\u7535\u53ef\u4ee5\u8fbe15\u5e74\u5de6\u53f3\u3002

\n

\n\u4f46\u662f\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53d1\u73b0\u5728\u7cfb\u7edf\u7535\u6e90\u957f\u671f\u4f9b\u7535\u540e\uff0c\u7a81\u7136\u5207\u6362\u5230\u7535\u6c60\u4f9b\u7535\u65f6\u53d1\u751f\u7535\u538b\u4e0d\u8db3\uff0c\u5bfc\u81f4RTC\u65f6\u949f\u51fa\u73b0\u5f02\u5e38\uff0c\u5176\u6839\u672c\u539f\u56e0\u662f\u7535\u6c60\u53d1\u751f\u4e86\u949d\u5316\u73b0\u8c61\u3002

\n

\n\u5f53RTC\u82af\u7247\u7531\u7cfb\u7edf\u7535\u6e90\u4f9b\u7535\u65f6\uff0c\u9502\u7535\u6c60\u76f8\u5f53\u4e8e\u95f2\u7f6e\u5f00\u8def\uff0c\u5982\u679c\u7535\u6c60\u95f2\u7f6e\u7684\u65f6\u95f4\u8fc7\u957f\uff0c\u90a3\u4e48\u7535\u6c60\u7684\u5185\u90e8\u4f1a\u4ea7\u751f\u949d\u5316\u819c\uff0c\u800c\u5207\u6362\u5230\u9502\u7535\u6c60\u4f9b\u7535\u65f6\uff0c\u5982\u679c\u6ede\u540e\u7684\u7535\u538b\u4f4e\u4e8e\u65f6\u949f\u82af\u7247\u7684\u5de5\u4f5c\u7535\u538b\uff0c\u90a3\u4e48\u65f6\u949f\u82af\u7247\u5c31\u4f1a\u5b8c\u5168“\u5931\u538b”\uff0c\u7cfb\u7edf\u65f6\u949f\u5c31\u4f1a\u6062\u590d\u5230\u521d\u59cb\u65f6\u95f4\uff0c\u5bfc\u81f4\u65f6\u949f\u5de5\u4f5c\u5f02\u5e38\u3002\u4e3a\u4e86\u6d88\u9664\u8fd9\u79cd\u73b0\u8c61\u7684\u5f71\u54cd\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5728\u65f6\u949f\u82af\u7247\u7684\u7535\u6e90\u4e0a\u589e\u52a0\u50a8\u80fd\u7535\u5bb9\uff0c\u4ee5\u6d88\u9664\u8fd9\u79cd\u5f71\u54cd\u3002<\/span><\/span>

\n
<\/p>\n

\n\t <\/span><\/div>\n
\n\t\u56fe 4 \u7535\u538b\u6ede\u540e\u5904\u7406\u7535\u8def\u56fe<\/span>

\n\t <\/div>\n

3\uff09 \u63a7\u5236\u949d\u5316\u819c\u751f\u6210<\/strong>

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\n

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