3819_03 Datasheet, PDF (57/218 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
3819 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(When IIDCON4 = “1”)
Noise filter
Sampling clock
INT2 pin
Acceptance
of interrupt
Counter
sampling clock
8-bit binary
up counter value
Interrupt interval
determination
register value
N
0
1
0
1
2
3
4
0
1
0
1
0
1
0
N
1
4
1
1
1
N
1
Remote Remote
control control
interrupt interrupt
request request
4
1
1
Remote Remote Remote Remote
control control control control
interrupt interrupt interrupt interrupt
request request request request
Fig. 38 Interrupt interval determination operation example (at both-sided edge active)
FE ^FF
0
FF
1
FF
Counter
overflow
interrupt
request
43