3069RF-ZTAT Datasheet, PDF (374/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

Value of 16TCNT0
to 16TCNT2
GRB0
GRB1
GRA0
GRB2
GRA1
GRA2
H'0000
TIOCA₀
Cleared by compare match with GRB0
TIOCA₁
TIOCA₂
Figure 9.25 Synchronization (Example)
9.4.4 PWM Mode
In PWM mode GRA and GRB are paired and a PWM waveform is output from the TIOCA pin.
GRA specifies the time at which the PWM output changes to 1. GRB specifies the time at which
the PWM output changes to 0. If either GRA or GRB compare match is selected as the counter
clear source, a PWM waveform with a duty cycle from 0% to 100% is output at the TIOCA pin.
PWM mode can be selected in all channels (0 to 2).
Table 9.4 summarizes the PWM output pins and corresponding registers. If the same value is set
in GRA and GRB, the output does not change when compare match occurs.
Table 9.4 PWM Output Pins and Registers
Channel
0
1
2
Output Pin
TIOCA
0
TIOCA₁
TIOCA₂
1 Output
GRA0
GRA1
GRA2
0 Output
GRB0
GRB1
GRB2
Rev. 5.0, 09/04, page 352 of 978