W79E532A Datasheet, PDF (24/78 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E532A/W79L532A
ORL CKCON, #11000000B
MOV TA, #AAH
MOV TA, #55H
ORL WDCON, #00000010B
; Select 26 bits watchdog timer
; Enable watchdog
Accumulator
Bit:
7
6
5
4
3
2
1
0
ACC.7 ACC.6 ACC.5 ACC.4 ACC.3 ACC.2 ACC.1 ACC.0
Mnemonic: ACC
ACC.7-0: The A (or ACC) register is the standard 8052 accumulator.
Address: E0h
Extended Interrupt Enable
Bit:
7
6
5
4
3
2
1
0
-
-
-
EWDI
-
-
-
-
Mnemonic: EIE
Address: E8h
EIE.7-5: Reserved bits, will read high
EWDI: Enable Watchdog timer interrupt
B Register
Bit:
7
6
5
4
3
2
1
0
B.7
B.6
B.5
B.4
B.3
B.2
B.1
B.0
Mnemonic: B
Address: F0h
B.7-0: The B register is the standard 8052 register that serves as a second accumulator.
Extended Interrupt Priority
Bit:
7
6
5
4
3
2
1
0
-
-
-
PWDI
-
-
-
-
Mnemonic: EIP
Address: F8h
EIP.7-5: Reserved bits.
PWDI: Watchdog timer interrupt priority.
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