I am using PCF8523 RTC Chip and also I mounted Coin Cell also. I configured Coin Cell as Standard mode and low Detection Mode (000). But, after setting the time when rebooting the time is not update.
If anyone know how to make this coin cell work when power off the board, As per datasheet I initialize control register 3 = 000. But, I not getting the time when power on the board
And we are using 3V battery and I want to know how much Voltage we got when switch OFF the board and switch ON the board?