Interval Timer Operation - Hitachi H8/3006 Hardware Manual

12.3.2

Interval Timer Operation

Figure 12.5 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
IT
WT/ = 0
TME = 1
420
Interval Interval
timer timer
interrupt interrupt
Figure 12.5 Interval Timer Operation
Interval Interval
timer timer
interrupt interrupt
Time t