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W77IC32P-25 Datasheet(PDF) 11 Page - Winbond

Part # W77IC32P-25
Description  8 BIT MICROCONTROLLER
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
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W77IC32P-25 Datasheet(HTML) 11 Page - Winbond

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Preliminary W77IC32
Publication Release Date: March 2000
- 11 -
Revision A0
TR0:
Timer 0 run control: This bit is set or cleared by software to turn timer/counter on or off.
IE1:
Interrupt 1 edge detect: Set by hardware when an edge/level is detected on INT1. This bit is
cleared by hardware when the service routine is vectored to only if the interrupt was edge
triggered. Otherwise it follows the pin.
IT1:
Interrupt 1 type control: Set/cleared by software to specify falling edge/ low level triggered
external inputs.
IE0:
Interrupt 0 edge detect: Set by hardware when an edge/level is detected on INT0 . This bit is
cleared by hardware when the service routine is vectored to only if the interrupt was edge
triggered. Otherwise it follows the pin.
IT0:
Interrupt 0 type control: Set/cleared by software to specify falling edge/ low level triggered
external inputs.
Timer Mode Control
Bit:
7
6
5
4
3
2
1
0
GATE
C/ T
M1
M0
GATE
C/ T
M1
M0
TIMER1
TIMER0
Mnemonic: TMOD
Address: 89h
GATE: Gating control: When this bit is set, Timer/counter x is enabled only while INTx pin is high
and TRx control bit is set. When cleared, Timer x is enabled whenever TRx control bit is set.
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
1
1
Mode 3: (Timer 0) TL0 is an 8-bit timer/counter controlled by the
standard Timer 0 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


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