Datasheet

62
4341H–MP3–10/07
AT8xC51SND2C/MP3B
12.4 Registers
Table 12-2. WDTRST Register
WDTRST (S:A6h Write only) – Watchdog Timer Reset Register
Reset Value = XXXX XXXXb
Figure 12-4. WDTPRG Register
WDTPRG (S:A7h) – Watchdog Timer Program Register
Reset Value = XXXX X000b
7 6 5 4 3 2 1 0
- - - - - - - -
Bit Number
Bit
Mnemonic Description
7 - 0 - Watchdog Control Value
7 6 5 4 3 2 1 0
- - - - - WTO2 WTO1 WTO0
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 12-1 for time-out periods.