EM73P982 datasheet(17/41 Pages) EMC

17 / 41 page

* This specification are subject to be changed without notice.

EM73P982

4-BIT MICROCONTROLLER

12.25.2001

Port 28

TMSA

IPSA

Initial state: 0000

TIMER/COUNTER MODE SELECTION

TMSA (B)

Function description

0 0

Stop

0 1

Event counter mode

1 0

Timer mode

1 1

Pulse width measurement mode

Port 29

TMSB

IPSB

Initial state: 0000

INTERRUPT CONTROL

TRGA request

P8.3/

TRGA

EVENT COUNTER CONTROL

TIMER CONTROL

internal clock

P28

12 BIT COUNTER

TMSA

IPSA

DATA BUS

P8.1/

TRGB

EVENT COUNTER CONTROL

TIMER CONTROL

internal clock

P29

12 BIT COUNTER

TMSB

IPSB

TRGB request

PULSE-WIDTH MEASUREMENT

CONTROL

PULSE-WIDTH MEASUREMENT

CONTROL

TIMER/COUNTER CONTROL

P8.1/TRGB, P8.3/TRGA are the external timer inputs for timerB and timerA, they are used in event

counter and pulse-width measurement mode.

Timer/counter command port: P28 is the command port for timer/counterA and P29 is for the timer/

counterB.

INTERNAL PULSE-RATE SELECTION

IPSA(B)

Function description

0 0

XIN/2

0 1

XIN/2

1 0

XIN/2

1 1

XIN/2

EM73P982 Datasheet(PDF) 17 Page - ELAN Microelectronics Corp

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