C868_02 Datasheet, PDF (180/244 Pages) Infineon Technologies AG – 8 - Bit CMOS Microcontroller

C868
Fail Save Mechanism
WDTCON. This register specifies the reload value for the high byte of the timer and
selects the input clock prescaling factor.
WDTREL
Watchdog Timer Reload Register
[Reset value: 00_H]
7
6
5
4
3
2
1
0
WDTREL
rw
Field
WDTREL
Bits Typ Description
[7:0] rw Watchdog Timer Reload Value (for the high byte of
WDT)
WDTCON
Watchdog Timer Register
[Reset value: XXXXXX00_B]
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
WDTIN
r
r
r
r
r
r
r
rw
Field
WDTIN
-
Bits Typ Description
0
rw Watchdog Timer Input Frequency Selection
‘0’: Input frequency is f_SYS/ 2
‘1’: Input frequency is f_SYS / 128
[7:2] r reserved;
returns ’0’ if read; should be written with ’0’;
User’s Manual
6-2
V 0.4, 2002-01