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LPC 2106 - RTC Battery backup

Started by Pramod Wani in LPC200018 years ago 1 reply

Dear Sir , I want to develop rtc circuit with battery backup in lpc2106. I have not used any external components for rtc circuit. But...

Dear Sir , I want to develop rtc circuit with battery backup in lpc2106. I have not used any external components for rtc circuit. But for battery backup , should I connect coin cell supply to the Vdd1.8 ( core ) pin of LPC2106 ? Or Should I connect coin cell supply to vdd3-1 & vdd3-2 pin of LPC2106 ? Depending on that I have to decide the coin cell voltage rating and part no...



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