m3819 Renesas Electronics Corporation., m3819 Datasheet - Page 56

• Manufacturer Part Number: m3819
• Description: Mitsubishi 8-bit Single-chip Microcomputer 740 Family / 38000 Series
• Manufacturer: Renesas Electronics Corporation.

Fig. 36 Structure of interrupt interval determination control register
Fig. 37 Interrupt interval determination operation example (at rising edge active)
42
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