EM73982 Просмотр технического описания (PDF) - ELAN Microelectronics
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EM73982 Datasheet PDF : 41 Pages
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EM73982
4-BIT MICROCONTROLLER
INTERRUPT CONTROL
TRGA request
TRGB request
DATA BUS
12 BIT COUNTER
12 BIT COUNTER
P8.3/
TRGA
internal clock
EVENT COUNTER CONTROL
TIMER CONTROL
PULSE-WIDTH MEASUREMENT
CONTROL
EVENT COUNTER CONTROL
TIMER CONTROL
PULSE-WIDTH MEASUREMENT
CONTROL
P8.1/
TRGB
internal clock
P28 TMSA
IPSA
P29 TMSB
IPSB
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.
Port 28 3 2 1 0
TIMER/COUNTER MODE SELECTION
TMSA IPSA
TMSA (B)
Function description
Initial state: 0000
00
Stop
0 1 Event counter mode
Port 29
3210
TMSB IPSB
Initial state: 0000
1 0 Timer mode
1 1 Pulse width measurement mode
INTERNAL PULSE-RATE SELECTION
IPSA(B)
00
01
Function description
XIN/210 Hz
14
XIN/2 Hz
18
10
XIN/2 Hz
22
11
XIN/2 Hz
* This specification are subject to be changed without notice.
11.30.2001 17
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