Renesas H8S/2437 Hardware Manual page 453

Timing of Switchover by
No. Means of IS2 to IS0 Bits Operation of Edge Detection Circuit
3 Switching from
high to low
4 Switching from
high to high
Notes: 1. The switchover timing is detected as a rising edge.
2. The switchover timing is detected as a falling edge.
External event signal
before switchover
External event signal
after switchover
Rising edge
detection signal
Falling edge
detection signal
External event signal
before switchover
External event signal
after switchover
Rising edge
detection signal
Falling edge
detection signal
2
*
Switchover of IS bit
Switchover of IS bit
Rev. 1.00, 09/03, page 415 of 704