NEC 78K0/KD1 Series User Manual page 172

Count clock
TM5n
CR5n
FF
TCE5n
INTTM5n
TO5n
Remark n = 0, 1
172
CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50 AND 51
Figure 7-9. Interval Timer Operation Timing (2/2)
(b) When CR5n = 00H
t
Count clock
TM5n 00H 00H
CR5n
00H
TCE5n
INTTM5n
TO5n
Interval time
(c) When CR5n = FFH
t
01 FE
Preliminary User's Manual U16315EJ1V0UD
00H
00H
FF 00
FF
Interrupt acknowledged
Interval time
FE FF 00
FF
Interrupt
acknowledged