at89c51ac3-s3sim ATMEL Corporation, at89c51ac3-s3sim Datasheet - Page 82

• Manufacturer Part Number: at89c51ac3-s3sim
• Description: At89c51ac3 Enhanced 8-bit Microcontroller With 64kb Flash Memory
• Manufacturer: ATMEL Corporation

82
AT89C51AC3
Table 45. WDTRST Register
WDTRST (S:A6h Write only)
Watchdog Timer Enable Register
Reset Value = 1111 1111b
Note:
Number
Bit
7
–
7
The WDRST register is used to reset/enable the WDT by writing 1EH then E1H in
sequence without instruction between these two sequences.
Mnemonic Description
Bit
6
–
-
Watchdog Control Value
5
–
4
–
3
–
2
–
4383D–8051–02/08
1
–
0
–