Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet
Product codes
ATSAM4E-XPRO
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
392
20.
General Purpose Backup Registers (GPBR)
20.1
Description
The System Controller embeds 20 General Purpose Backup registers.
It is possible to generate an immediate clear of the content of General Purpose Backup registers 0 to 9 (first half) if
a Low-power Debounce event is detected on one of the wakeup pins, WKUP0 or WKUP1. The content of the other
General Purpose Backup registers (second half) remains unchanged.
a Low-power Debounce event is detected on one of the wakeup pins, WKUP0 or WKUP1. The content of the other
General Purpose Backup registers (second half) remains unchanged.
The Supply Controller module must be programmed accordingly. In the register SUPC_WUMR in the Supply
Controller module, LPDBCCLR, LPDBCEN0 and/or LPDBCEN1 bit must be configured to 1 and LPDBC must be
other than 0.
Controller module, LPDBCCLR, LPDBCEN0 and/or LPDBCEN1 bit must be configured to 1 and LPDBC must be
other than 0.
If a Tamper event has been detected, it is not possible to write to the General Purpose Backup registers while the
LPDBCS0 or LPDBCS1 flags are not cleared in the Supply Controller Status Register (SUPC_SR).
LPDBCS0 or LPDBCS1 flags are not cleared in the Supply Controller Status Register (SUPC_SR).
20.2
Embedded Characteristics
20 32-bit General Purpose Backup Registers