Hi,
On a custom bord, I have a RTC Cypress CY14B101k wich is a nvRAM, with Real Time Clock Calendar, Alarm Clock and Watchdog.
This board uses a superCapacity (not battery) for this "RTC".
When the board is OFF, RTC is running quite well : the time seems correct.
The problem is when the board is ON, the RTC seems stopped and OSCF (Oscillator Failure) flag is set to 1.
My question is : What are the reasons that causes oscillator stop ?
I don't use Watchdog, alarm, interrupt.
Writing a 0 to OSCEN_n causes OSCF=0 (good) but 6 seconds later OSCF=1 and the time is not running.
Best regards,
