NEC UPD703116 User Manual page 395

Figure 9-99. PWM Output Operation Timing Example
t
Count
clock
TM3
0000H 0001H
register
Count start
CC30
p
register
CC31
q
register
INTCC30
interrupt
INTCC31
interrupt
TO3
(output)
Remarks 1. p: Setting value of CC30 register (0000H to FFFFH)
q: Setting value of CC31 register (0000H to FFFFH)
p ≠ q
t: Count clock cycle
PWM cycle = 65536 × t
q − p
Duty =
65536
2. In this example, the active level of TO3 output is set to high level.
CHAPTER 9 TIMER/COUNTER FUNCTION
p q
p p
q q
User's Manual U14492EJ5V0UD
FFFFH 0000H 0001H p
Clear
p
q
q
p
q
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