22.5.10 GPBR Clear

On a tamper event, the GPBR registers content can be fully or partially erased.

By setting RTC_TAMPER.TAMPCLR to 1, the GPBR registers content are fully or partially cleared depending on the value of RTC_TCR.FGPBRCLR:

if FGPBRCLR is set to ‘0’, a tamper event clears GPBR0 to GPBR11
if FGPBRCLR is set to ‘1’, a tamper event clears all GPBRs

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