W79E548 Datasheet, PDF (14/79 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E548/W79L548
C / T : Timer or Counter Select: When cleared, the timer is incremented by internal clocks. When set
, the timer counts high-to-low edges of the Tx pin.
M1, M0: Mode Select bits:
M1 M0
MODE
0 0 Mode 0: 8-bits with 5-bit prescale.
0 1 Mode 1: 18-bits, no prescale.
1 0 Mode 2: 8-bits with auto-reload from THx
Mode 3: (Timer 0) TL0 is an 8-bit timer/counter controlled by the standard Timer 0
1 1 control bits. TH0 is a 8-bit timer only controlled by Timer 1 control bits. (Timer 1)
Timer/counter is stopped.
Timer 0 LSB
Bit:
7
6
5
4
3
2
1
0
TL0.7 TL0.6 TL0.5 TL0.4 TL0.3 TL0.2 TL0.1 TL0.0
Mnemonic: TL0
Address: 8Ah
TL0.7−0: Timer 0 LSB
Timer 1 LSB
Bit:
7
6
5
4
3
2
1
0
TL1.7 TL1.6 TL1.5 TL1.4 TL1.3 TL1.2 TL1.1 TL1.0
Mnemonic: TL1
Address: 8Bh
TL1.7−0: Timer 1 LSB
Timer 0 MSB
Bit:
7
6
5
4
3
2
1
0
TH0.7 TH0.6 TH0.5 TH0.4 TH0.3 TH0.2 TH0.1 TH0.0
Mnemonic: TH0
Address: 8Ch
TH0.7−0: Timer 0 MSB
Timer 1 MSB
Bit:
7
6
5
4
3
2
1
0
TH1.7 TH1.6 TH1.5 TH1.4 TH1.3 TH1.2 TH1.1 TH1.0
Mnemonic: TH1
Address: 8Dh
TH1.7−0: Timer 1 MSB
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