Datasheet

Section 19 Watchdog Timer (WDT)
Page 674 of 982 REJ09B0465-0300 Rev. 3.00
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
19.3.3 Watchdog Timer Periodic Interrupt
When the INTSEL[1:0] bits in TICRWD are set and the timer WD counter reaches the set value,
the IWF bit in TIFRWD is set to 1. At this time, if the IWIE bit in TICRWD is 1, an interrupt
request is generated. Figure 19.4 shows the interrupt generation timing when INTSEL is B'01.
IWF
H'40H'3F
Interrupt request
flag setting signal
TCWD
φ
Figure 19.4 Periodic Interrupt Generation Timing (INTSEL = B'01)