Ovf Flag Clearing In Interval Timer Mode - Renesas H8S/2633 Series Hardware Manual

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OVF Flag Clearing in Interval Timer Mode

When the OVF Flag setting conflicts with the OVF flag reading in interval timer mode, writing 0

to the OVF bit may not clear the flag even though the OVF bit has been read while it is 1. If there

is a possibility that the OVF flag setting and reading will conflict, such as when the OVF flag is

polled with the interval timer interrupt disabled, read the OVF bit while it is 1 at least twice before

writing 0 to the OVF bit to clear the flag.