W79E825A Datasheet, PDF (23/127 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E825A/824A/823B/822B Data Sheet
M1, M0: Mode Select bits:
M1 M0
MODE
0 0 Mode 0: 8-bit timer/counter TLx serves as 5-bit pre-scale.
0 1 Mode 1: 16-bit timer/counter, no pre-scale.
1 0 Mode 2: 8-bit timer/counter with auto-reload from THx.
Mode 3: (Timer 0) TL0 is an 8-bit timer/counter controlled by the standard Timer0
11
control bits. TH0 is an 8-bit timer only controlled by Timer1 control bits.
(Timer 1) Timer/Counter 1 is stopped.
TIMER 0 LSB
Bit: 7
6
5
TL0.7
TL0.6
TL0.5
Mnemonic: TL0
BIT NAME
7-0 TL0.[7:0] Timer 0 LSB.
4
TL0.4
3
TL0.3
2
TL0.2
FUNCTION
1
TL0.1
0
TL0.0
Address: 8Ah
TIMER 1 LSB
Bit: 7
TL1.7
6
TL1.6
5
TL1.5
Mnemonic: TL1
BIT NAME
7-0 TL1.[7:0] Timer 1 LSB.
4
TL1.4
3
TL1.3
2
TL1.2
FUNCTION
1
TL1.1
0
TL1.0
Address: 8Bh
TIMER 0 MSB
Bit: 7
6
5
TH0.7
TH0.6
TH0.5
Mnemonic: TH0
BIT NAME
7-0 TH0.[7:0] Timer 0 MSB.
4
TH0.4
3
TH0.3
2
TH0.2
FUNCTION
1
TH0.1
0
TH0.0
Address: 8Ch
TIMER 1 MSB
Bit: 7
TH1.7
6
TH1.6
5
TH1.5
Mnemonic: TH1
BIT NAME
7-0 TH1.[7:0] Timer 1 MSB.
4
TH1.4
3
TH1.3
2
TH1.2
FUNCTION
1
TH1.1
0
TH1.0
Address: 8Dh
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Publication Release Date: February 21, 2008
Revision A9