DMC73C168 데이터 시트보기 (PDF) - Daewoo Semiconductor

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DMC73C168

8Bit Single Chip Microcontroller

Daewoo Semiconductor 

8Bit Single Chip Microcontroller

18

DMC73C168

PF NAME : T2MSDATA

R/W BIT 7

P8

READ

>0108 WRITE

RESET VALUE

X

: TIMER 2 MS BYTE DATA REGISTER

BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1

MSB READOUT LATCH

MSB READOUT REGISTER

X

X

X

X

X

X

BIT 0

X

PF NAME : T2LSDATA

R/W BIT 7

P9

READ

>0109 WRITE

RESET VALUE

X

: TIMER 2 LS BYTE DATA REGISTER

BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1

LSB DECREMENTER VALUE

LSB RELOAD REGISTER

X

X

X

X

X

X

BIT 0

X

PF NAME : T2CTL0

: TIMER 2 CONTROL REGISTER 0

R/W

BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0

P10 READ

MSB READOUT LATCH

>010A WRITE CASCADE T2OUT X

X

X

X

X

X

RESET VALUE

T2OUT :

O

O

X

X

X

X

X

X

Timer 2 toggle output enable bit.

This write bit determines PORT B1 is timer 2 toggle output pin or normal I/O pin.

0 = PORT B1 is normal I/O pin.

1 = PORT B1 is timer 1 toggle output pin, and B1 is toggle when Timer 2

decrements through zero value.

CASCADE :

Timer 2 cascade control bit

0 = Timer 2 is not cascaded with Timer 1, Timer 2 clock is determined by

source bit.

1 = Timer 1 and 2 are cascaded, clock source is generated by Timer 1 reload

pulse, overrides source bit.

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