Precautions When Using Watch Counter - Fujitsu F2MC-8FX Hardware Manual

14.6

Precautions when Using Watch Counter

Shown below are the precautions that must be followed when using the watch counter.
• If the watch prescaler is cleared during the operation of the watch counter, the watch counter may not be
able to perform normal operation. When clearing the watch prescaler, set the ISEL bit of the WCSR
register to "0" to stop the watch counter in advance.
• When the operation is reactivated by WCSR:ISEL=0 after counter stop, please reactivate after
confirming reading WCSR:CTR[5:0] twice, and clearing to CTR[5:0]=000000
CHAPTER 14 WATCH COUNTER
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