topic LPC51U68 RTC backup in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/LPC51U68-RTC-backup/m-p/1068375#M41224 <HTML><HEAD></HEAD><BODY><P>LPC51U68 has RTC but DON'T have battery backup pin (something like VBAT) ? How is it possible to backup the RTC?</P><DIV style="position: absolute; left: 402px; top: 52px;"><DIV class="gtx-trans-icon"></DIV></DIV></BODY></HTML> Wed, 26 Aug 2020 14:47:59 GMT br1 2020-08-26T14:47:59Z LPC51U68 RTC backup https://community.nxp.com/t5/LPC-Microcontrollers/LPC51U68-RTC-backup/m-p/1068375#M41224 <HTML><HEAD></HEAD><BODY><P>LPC51U68 has RTC but DON'T have battery backup pin (something like VBAT) ? How is it possible to backup the RTC?</P><DIV style="position: absolute; left: 402px; top: 52px;"><DIV class="gtx-trans-icon"></DIV></DIV></BODY></HTML> Wed, 26 Aug 2020 14:47:59 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC51U68-RTC-backup/m-p/1068375#M41224 br1 2020-08-26T14:47:59Z Re: LPC51U68 RTC backup https://community.nxp.com/t5/LPC-Microcontrollers/LPC51U68-RTC-backup/m-p/1133229#M42115 <P>Hi,</P> <P>As you mentioned the LPC51U68 does not have a straightforward method to backup the RTC. The RTC module and the oscillator that drives it, run directly from device power pins. This means you will need to use some external circuitry such as a schottky diode.</P> <P>Best regards,</P> <P>Felipe</P> Tue, 01 Sep 2020 16:56:07 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC51U68-RTC-backup/m-p/1133229#M42115 FelipeGarcia 2020-09-01T16:56:07Z