H83003 Datasheet, PDF (436/715 Pages) Renesas Technology Corp – microcontroller (MCU)

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
WT/ IT = 0
TME = 1
Interval
timer
interrupt
Interval
timer
interrupt
Interval
timer
interrupt
Interval
timer
interrupt
Figure 12-5 Interval Timer Operation
Time t
418