W78IRD2A25DL Datasheet, PDF (12/76 Pages) List of Unclassifed Manufacturers – 8-BIT MICROCONTROLLER

W78IRD2
Continued
BIT NAME
3 GATE
2 _{C/ T}
1
M1
0
M0
FUNCTION
Gating control: When this bit is set, Timer/Counter 0 is enabled only while the INT0
pin is high and the TR0 control bit is set. When cleared, the INT0 pin has no effect,
and Timer 0 is enabled whenever TR0 is set.
Timer or Counter Select: When cleared, Timer 0 is incremented by the internal
clock. When set, Timer 0 counts falling edges on the T0 pin.
Timer 0 Mode Select bits: See below.
Timer 0 Mode Select bits: See below.
M1, M0: Mode Select bits:
M1 M0 Mode
0 0 Mode 0: 8048 timer, 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
1 1 Mode 3:
(Timer 0) TL0 is an 8-bit timer/counter controlled by the standard Timer-0 control
bits. TH0 is an 8-bit timer only controlled by Timer-1 control bits.
(Timer 1) Timer/Counter 1 is stopped.
Timer 0 LSB
Bit:
7
TL0.7
6
TL0.6
5
TL0.5
4
TL0.4
3
TL0.3
2
TL0.2
1
TL0.1
0
TL0.0
Mnemonic: TL0
Address: 8Ah
TL0.7-0: Timer 0 Low byte
Timer 1 LSB
Bit:
7
TL1.7
6
TL1.6
5
TL1.5
4
TL1.4
3
TL1.3
2
TL1.2
1
TL1.1
0
TL1.0
Mnemonic: TL1
Address: 8Bh
TL1.7-0: Timer 1 Low byte
Timer 0 MSB
Bit:
7
TH0.7
6
TH0.6
5
TH0.5
4
TH0.4
3
TH0.3
2
TH0.2
1
TH0.1
0
TH0.0
Mnemonic: TH0
Address: 8Ch
TH0.7-0: Timer 0 High byte
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