Interrupt Sources - Renesas H8S/2100 Series Hardware Manual

6-bit single-chip microcomputer

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Section 13 Watchdog Timer (WDT)

Interrupt Sources

During interval timer mode operation, an overflow generates an interval timer interrupt (WOVI).

The interval timer interrupt is requested whenever the OVF flag is set to 1 in TCSR. OVF must be

cleared to 0 in the interrupt handling routine.

When the NMI interrupt request is selected in watchdog timer mode, an NMI interrupt request is

generated by an overflow

Table 13.3 WDT Interrupt Source

Interrupt Source

TCNT overflow

Rev. 1.00 May 09, 2008 Page 358 of 954

REJ09B0462-0100

Interrupt Flag