UPD784938 Datasheet, PDF (243/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 9 TIMER/EVENT COUNTER 0
If a value smaller than that of the TM0 is set as the CR0n value, a 100% duty PWM signal will be output. CR0n rewriting should
be performed by the interrupt due to a match between TM0 and the CR0n on which the rewrite is performed.
Figure 9-21. Example of 100% Duty with PWM Output
FFFFH
FFFFH
FFFFH
FFFFH
TM0
count value
0H
n1
n1
n3
n2
n2
n2
CR00
n1
n2
TO0
Remark ALV0 = 0
When value n2 which is smaller than the TM0 value n3 is
written to CR00, the duty of this period will be 100%.
Preliminary User’s Manual U13987EJ1V0UM00
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