Interrupt request flag clear
Interrupt request flag clear
2
Program process
Interrupt
Interrupt Normal
w
f
Interrupt factor
generation signal
(Internal signal, nega-acitve)
Overflow signal,
Compare match signal
(Internal signal, nega-acitve)
Interrupt request flag
(IRRTFH,IRRTFL)
1
Figure 1 Clear interrupt request flag when interrupt factor generation signal is valid
(4)
Timer counter (TCF) read/write
When f w/4 is selected as the internal clock in active(high-speed, medium-speed) mode,
write on TCF is impossible. And, when read TCF, as the system clock and internal clock are
mutually asynchronous, TCF synchronizes with synchronization circuit.
This results in a maximum TCF read value error of ±1.
When read/write TCF in active(high-speed, medium-speed) mode is needed, please select
internal clock except for f w/4 before read/write.
In subactive mode, even f w/4 is selected as the internal clock, normal read/write TCF is possible.
3
ETC [ ETC ]
