UPD784020 Datasheet, PDF (33/90 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCOMPUTER

mPD784020, 784021
Fig. 8-5 Timer/Counter Block Diagram
H
Timer/counter 0
Clear information
Software trigger
fxx/8
Prescaler
Timer register 0
(TM0)
Compare register
(CR00)
Compare register
(CR01)
Match
Match
OVF
TO0
TO1
INTP3
Edge
detection
Timer/counter 1
INTP3
Capture register
(CR02)
Clear information
INTC00
INTC01
fxx/8
Prescaler
Event input
INTP0
Edge
detection
INTP0
Timer register 1
(TM1/TM1M)
Compare register
(CR10/CR10W)
Match
Capture/compare register ^Match
(CR11/CR11W)
Capture register
(CR12/CR12W)
OVF
INTC10
To real-time
output port
INTC11
Timer/counter 2
Clear information
INTP2/C1
fxx/8 _Prescaler
Edge
detection
INTP2
Timer register 2
(TM2/TM2W)
Compare register
(CR20/CR20W)
Match
Match
Capture/compare register
(CR21/CR21W)
INTP1
Edge
detection
INTP1
Capture register
(CR22/CR22W)
Timer 3
fxx/8
Prescaler
Timer register 3
(TM3/TM3W)
Clear
Compare register Match
(CR30/CR30W)
Remark OVF: Overflow flag
OVF
TO2
TO3
INTC20
INTC21
CSI
INTC30
33