UPD70F3116 Datasheet, PDF (395/826 Pages) NEC – 32-Bit Single-Chip Microcontrollers

CHAPTER 9 TIMER/COUNTER FUNCTION
Figure 9-99. PWM Output Operation Timing Example
t
Count
clock
TM3
register
0000H 0001H
p
Count start
CC30
register
p
p
CC31
q
q
register
INTCC30
interrupt
INTCC31
interrupt
TO3
(output)
q
FFFFH 0000H 0001H
p
q
Clear
p
p
p
q
q
q
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.
User’s Manual U14492EJ5V0UD
395