BACK UP Register

[Leo Leo]

Posted on December 08, 2016 at 09:52

Hi, 

What are the back up register and what is the goal of these registers to wake up a device from a low power mode.

Thank you very much !

Have a nice day !  #backup-register #low-power-mode

[Nesrine M_O · Accepted solution]

Posted on December 08, 2016 at 12:09

Hi

Michel.Leo

‌,

The backup registers (RTC_BKPxR) are 32-bit registers for storing 80 bytes of user application data. They are implemented in the backup domain that remains powered-on by VBAT when the VDD power is switched off. They are not reset by system reset or when the device wakes up from Standby mode. They are reset by a backup domain reset.

The backup registers are reset when a tamper detection event occurs.

Please refer to Real-time clock (RTC) and Power controller (PWR) sections on your related reference manual.

-Nesrine-

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