SAB80515 Datasheet, PDF (106/270 Pages) Siemens Semiconductor Group – 8-Bit Single-Chip Microcontroller Family

On-Chip Peripheral Components
Figure 7-46
Special Function Register IEN1
0BFH 0BEH 0BDH 0BCH 0BBH 0BAH 0B9H 0B8H
0B8H EXEN2 SWDT EX6 EX5 EX4 EX3 EX2 EADC IEN1
These bits are not used by the watchdog timer.
Bit
SWDT
Function
Watchdog timer start/refresh flag.
Set to activate/refresh the watchdog timer. When directly set after setting
WDT, a watchdog timer refresh is performed. Bit SWDT is reset by
hardware two processor cycles after it has been set.
Figure 7-47
Special Function Register IP0
0A9H – WDTS IP0.5 IP0.4 IP0.3 IP0.2 IP0.1 IP0.0 IP0
These bits are not used by the watchdog timer.
Bit
WDTS
Function
Watchdog timer status flag.
Set by hardware when the watchdog timer was started.
Can be read by software.
Semiconductor Group
106