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EM73962AH View Datasheet(PDF) - ELAN Microelectronics

Part Name
Description
Manufacturer
EM73962AH
EMC
ELAN Microelectronics EMC
EM73962AH Datasheet PDF : 35 Pages
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EM73962A
4-BIT MICROCONTROLLER
For the pulse width measurement mode, the counter only incresed by the rising edge of internal pulse rate as
external timer/counter input (P8.1/TRGB, P8.3/TRGA ), interrupt request will be generated as soon as
timer/counter count overflow.
P8.1/TRGB(P8.3/TRGA)
Internal pulse
TimerB(TimerA) value
n n+1 n+2 n+3 n+4 n+5
PROGRAM EXAMPLE: Enable timerA by pulse width measurement mode.
LDIA #1100b ;
OUTA P28
; Enable timerA with pulse width measurement mode.
INTERRUPT FUNCTION
There are 5 interrupt sources, 2 external interrupt sources, 3 internal interrupt sources. Multiple interrupts
are admitted according the priority.
Type
Interrupt source
Priority Interrupt Interrupt
Program ROM
Latch
Enablecondition entryaddress
External Externalinterrupt(INT0)
1
IL5
Internal Reserved
2
IL4
Internal TimerA overflow interrupt (TRGA) 3
IL3
Internal TimerB overflow interrupt (TRGB) 4
IL2
Internal Time base interrupt(TBI)
5
IL1
External Externalinterrupt(INT1)
6
IL0
EI=1
EI=1, MASK3=1
EI=1, MASK2=1
EI=1, MASK1=1
EI=1,MASK0=1
INTERRUPT STRUCTURE
Reset by system reset and program
instruction
MASK0 MASK1 MASK1 MASK2 MASK3
INT1
r0
TBI TRGB TRGA
r1
r2
r3
r4
IL0
IL1
IL2
IL3
IL4
INT0
r5
IL5
002h
004h
006h
008h
00Ah
00Ch
Reset by system reset and program
instruction
Set by program instruction
Priority checker
EI
Entry address generator
Interrupt request
Interrupt entry address
Interrupt controller:
IL0-IL5
: Interrupt latch. Hold all interrupt requests from all interrupt sources. ILr can not be
set by program, but can be reset by program or system reset, so IL only can decide
which interrupt source can be accepted.
MASK0-MASK3 : Except INT0 ,MASK register can promit or inhibit all interrupt sources.
* This specification are subject to be changed without notice.
10.8.2001 17

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