NEC 78K0 User Manual page 241

Figure 9-10. Timing of Interval Timer/Square-Wave Output Operation (2/2)
Count clock
Count start
00H
8-bit timer counter Hn
CMP0n
TMHEn
INTTMHn
TOHn
Count clock
8-bit timer counter Hn
CMP0n
TMHEn
INTTMHn
TOHn
Remark n = 0, 1
CHAPTER 9 8-BIT TIMERS H0 AND H1
(b) Operation when CMP0n = FFH
01H
(c) Operation when CMP0n = 00H
*
Count start
Interval time
User's Manual U15947EJ2V0UD
FEH FFH 00H
Clear
FFH
Interval time
00H
00H
FEH FFH 00H
Clear
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