LPC MicrocontrollersのトピックLPC802问题 https://community.nxp.com/t5/LPC-Microcontrollers/LPC802%E9%97%AE%E9%A2%98/m-p/1071394#M41302 <HTML><HEAD></HEAD><BODY><P>LPC802可以内部采样电源电压吗，或者ADC的参考电压</P></BODY></HTML> Tue, 26 May 2020 02:17:13 GMT haifeng_jin 2020-05-26T02:17:13Z LPC802问题 https://community.nxp.com/t5/LPC-Microcontrollers/LPC802%E9%97%AE%E9%A2%98/m-p/1071394#M41302 <HTML><HEAD></HEAD><BODY><P>LPC802可以内部采样电源电压吗，或者ADC的参考电压</P></BODY></HTML> Tue, 26 May 2020 02:17:13 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC802%E9%97%AE%E9%A2%98/m-p/1071394#M41302 haifeng_jin 2020-05-26T02:17:13Z Re: LPC802问题 https://community.nxp.com/t5/LPC-Microcontrollers/LPC802%E9%97%AE%E9%A2%98/m-p/1071395#M41303 <HTML><HEAD></HEAD><BODY><P>Hi, HaiFeng,</P><P>就如下图， LPC802所有ADC 通道ADC_0~ADC_11都连接到外部管脚， 它不可以采样内部电源电压。 当然可以连接Vrefp 脚到某个ADC通道，测量Vrefp管脚的电压，测量电压的采样值肯定是0xFFF， 这没有意义。</P><P>BR</P><P>XiangJun Rong</P><P></P><P></P><P></P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/106333i9D8FE31B14FFBC6A/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P></BODY></HTML> Tue, 26 May 2020 05:40:00 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC802%E9%97%AE%E9%A2%98/m-p/1071395#M41303 xiangjun_rong 2020-05-26T05:40:00Z