Interval Timer Operation - Hitachi H8/3032 Series Hardware Manual

10.3.2 Interval Timer Operation

Figure 10-5 illustrates interval timer operation. To use the WDT as an interval timer, clear bit
WT/IT to 0 and set bit TME to 1 in TCSR. An interval timer interrupt request is generated at each
TCNT overflow. This function can be used to generate interval timer interrupts at regular
intervals.
H'FF
TCNT
count value
H'00
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IT
WT/ = 0 Interval Interval
TME = 1 timer timer
interrupt interrupt
Figure 10-5 Interval Timer Operation
Interval Interval
timer timer
interrupt interrupt
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Time t