3819 datasheet(56/218 Pages) RENESAS

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3819 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

Fig. 36 Structure of interrupt interval determination control register

Fig. 37 Interrupt interval determination operation example (at rising edge active)

Interrupt interval determination circuit operating selection bit

0 : Stopped

1 : Operating

Counter sampling clock selection bit

0 : f(XIN)/256

1 : f(XIN)/512

Noise filter sampling clock selection bits(INT2)

0 0 : Filter stop

0 1 : f(XIN)/64

1 0 : f(XIN)/128

1 1 : f(XIN)/256

One-sided/both-sided edge detection selection bit

0 : One-sided edge detection

1 : Both-sided edge detection

Not used (return “0” when read)

Interrupt interval determination control register

(IIDCON : address 003116)

Noise filter

Sampling clock

(When IIDCON4 = “0”)

INT2 pin

Acceptance

of interrupt

Counter

sampling clock

8-bit binary

up counter value

Interrupt interval

determination

Remote control

interrupt request

Remote control

interrupt request

Counter overflow

interrupt request

Remote control

interrupt request

3819 Datasheet(PDF) 56 Page - Renesas Technology Corp

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