HD643303x Hitachi, HD643303x Datasheet - Page 321

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

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
WT/
TME = 1
IT
= 0
Interval
timer
interrupt
Figure 10-5 Interval Timer Operation
Interval
timer
interrupt
306
Interval
timer
interrupt
Interval
timer
interrupt
Time t