Timing Of Timer Interrupt Operation - NEC PD789488 User Manual

Count clock
TM20 count value
0000H
CR20
INTTM20
TO20
TOF20
Remark N = 0000H to FFFFH
114
CHAPTER 6 16-BIT TIMER 20
Figure 6-5. Timing of Timer Interrupt Operation
t
0001H N
N N
User's Manual U15331EJ4V1UD
FFFFH 0000H 0001H
N
Interrupt
acknowledgement
Overflow flag set
N
N N
Interrupt
acknowledgement