5.12.2.1 Watchdog Configuration Register 1

Name: WDCR1
Offset: 0x21
Reset: 0x42
Property: R/W

Bit 76543210 
 WDC [7:5]WDPRE [4:3]WDSLPWDLWReserved 
Access R/WR/WR/WR/WR/WR/WR/WR 
Reset 01000010 

Bits 7:5 – WDC [7:5]

Watchdog Mode Control bits, set using the following bitfield values:
ValueDescription
001 OFF mode
010 Time-out mode (default)
100 Window mode

Bits 4:3 – WDPRE [4:3]

Watchdog Period Control bits, set using the following bitfield values (extend watchdog period by the factor defined below) :
ValueDescription
00 Watchdog prescale factor 1 (default)
01 Watchdog prescale factor 1.5
10 Watchdog prescale factor 2.5
11 Watchdog prescale factor 3.5

Bit 2 – WDSLP

Watchdog Control in Sleep Mode bit
ValueDescription
1 Set to ‘1’ to let the window watchdog run in Sleep mode.
0 Set to ‘0’ to stop the window watchdog from running in Sleep mode.

Bit 1 – WDLW

Trigger Window Length Control bit
ValueDescription
1 After LH is released, the WDT is reset, and the first trigger window is long (tLW).
0 After LH is released, the WDT is reset, and the first trigger window is standard (as configured by WDPRE and WWDP).