NEC PD78F9488 - Manual (Page 136)

CHAPTER 7 8-BIT TIMERS 50, 60, AND 61
User’s Manual U15331EJ4V1UD
136
Figure 7-11. Timing of Interval Timer Operation with 8-Bit Resolution (Basic Operation)
Count stop
Count clock
CRnm
TCEnm
INTTMnm
TOnm
N
t
TMnm N 00H 01H N 00H 01H N 00H 00H 01H 00H 01H
Clear Clear Clear
Count start
Interrupt acknowledgement Interrupt acknowledgement Interrupt acknowledgement
Interval time Interval time
Remarks 1. Interval time = (N + 1) × t: N = 00H to FFH
2. nm = 50, 60, 61
Figure 7-12. Timing of Interval Timer Operation with 8-Bit Resolution (When CRnm Is Set to 00H)
Count clock
CRnm
TCEnm
INTTMnm
TOnm
00H
TMnm 00H
Count start
Remark nm = 50, 60, 61