Datasheet

61
AT8xC51SND1C
4109E–8051–06/03
Registers Table 67. WDTRST Register
WDTRST (S:A6h Write only) – Watchdog Timer Reset Register
Reset Value = XXXX XXXXb
Figure 41. WDTPRG Register
WDTPRG (S:A7h) – Watchdog Timer Program Register
Reset Value = XXXX X000b
76543210
--------
Bit
Number
Bit
Mnemonic Description
7 - 0 - Watchdog Control Value
76543210
-----WTO2WTO1WTO0
Bit
Number
Bit
Mnemonic Description
7 - 3 -
Reserved
The value read from these bits is indeterminate. Do not set these bits.
2 - 0 WTO2:0
Watchdog Timer Time-Out Selection Bits
Refer to Table 66 for time-out periods.