User Manual

68
T89C51AC2
Rev. B – 19-Dec-01
Table 35. WDTRST Register
WDTRST (S: A6 h Write only)
WatchDog Timer Enable register
Rese t Value = 1111 1111b
Note: The WDRST register is used to reset/enable the WDT by wr iting 1EH then E1H in
sequence without instruction between these two sequences.
76543210
--------
Bit
Number
Bit
Mnemonic Description
7 - Watchdog Control Value