Datasheet

Table Of Contents

16.8.2 Backup Exit Source

Name: BKUPEXIT

Offset: 0x02

Property: –

When either a Hibernate ora Backup Reset occurs, the bit corresponding to the exit condition is set to '1',

the other bits are written to '0'.

In some specific cases, the RTC and BBPS bits can be set together, e.g. when the device leaves the

battery Backup Mode caused by a BBPS condition, and a RTC event was generated during the Battery

Backup Mode period.

Bit 7 6 5 4 3 2 1 0

HIB BBPS RTC

Access

R R R

Reset x x x

Bit 7 – HIB Hibernate

This bit is set if an Hibernate reset occurs. This bit is zero if a backup reset occurs.

Bit 2 – BBPS Battery Backup Power Switch

This bit is set if the Battery Backup Power Switch of the Supply Controller changes back from battery

mode to main power mode.

Bit 1 – RTC Real Timer Counter Interrupt

This bit is set if an RTC interrupt flag is set in Backup Mode.