SH7018 Datasheet, PDF (155/431 Pages) Renesas Technology Corp – SuperH™ RISC engine

100% Duty Cycle: Figure 8.27 shows an example of a 100% duty cycle PWM waveform output
in PWM mode.
In PWM mode, when setting cycle = duty cycle the output waveform does not change, nor is there
a change of waveform for the first pulse immediately after clearing the counter.
TCNT value
TGRA
TGRB rewrite
TGRB
Output does not change if period register and duty
cycle register compare matches occur simultaneously
TGRB rewrite
100% duty cycle
TGRB rewrite
Time
TCNT value
TGRA
TGRB rewrite
Output does not change if period register and duty
cycle register compare matches occur simultaneously
TGRB rewrite
TGRB
100% duty cycle
TGRB rewrite
Time
0% duty cycle
Figure 8.27 PWM Mode Operation Example (100% Duty Cycle)
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