Hi All,
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.
Reference,
https://www.nxp.com/docs/en/data-sheet/PCF8523.pdf
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?
Do you mind provide your schematic?
Hi when we check the battery the voltage we got in both on and off state is 0.4 volt only.
Hi,
Do you have a discharge loop circuit of battery in your system?
Can you try to change a new battery to test?
Thank you for your reply ,
I will replace and try whatever you suggest
Please check previous replayed one, i attached screenshot of schematic of pcf8523
Hi
What's your system power voltage of RTC and your coin cell voltage?
Thanks!