M38197 Mitsubishi, M38197 Datasheet - Page 41

• Manufacturer Part Number: M38197
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

Fig. DE-2 Structure of interrupt interval determination control register
Fig. DE-3 Interrupt interval determination operation example (at rising edge active)
Noise filter
Sampling clock
INT
Acceptance
of interrupt
Counter
sampling clock
8-bit binary
up counter value
Interrupt interval
determination
register value
(When IIDCON
2
pin
4
= “0”)
Remote control
interrupt request
b7
N
0
1
2
3
N
b0
4
Interrupt interval determination control register
(IIDCON : address 0031
Interrupt interval determination circuit operating selection bit
Counter sampling clock selection bit
Noise filter sampling clock selection bits(INT
One-sided/both-sided edge detection selection bit
Not used (return “0” when read)
5
0 0 : Filter stop
0 1 : f(X
1 0 : f(X
1 1 : f(X
Remote control
interrupt request
0 : Stopped
1 : Operating
0 : f(X
1 : f(X
0 : One-sided edge detection
1 : Both-sided edge detection
6
6
IN
IN
IN
IN
IN
)/256
)/512
)/64
)/128
)/256
0
1
6
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
2
16
Remote control
interrupt request
)
3
3
0
MITSUBISHI MICROCOMPUTERS
1
2
3
)
FE
Counter overflow
interrupt request
FF
FF
3819 Group
FF
0
41