HD64F3039F18 Datasheet, PDF (276/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 8 16-Bit Integrated Timer Unit (ITU)
8.4.6 Complementary PWM Mode
In complementary PWM mode channels 3 and 4 are combined to output three pairs of
complementary, non-overlapping PWM waveforms.
When complementary PWM mode is selected TIOCA₃, TIOCB₃, TIOCA₄, TOCXA₄, TIOCB₄, and
TOCXB₄ automatically become PWM output pins, and TCNT3 and TCNT4 function as up/down-
counters.
Table 8.7 lists the PWM output pins. Table 8.8 summarizes the register settings.
Table 8.7 Output Pins in Complementary PWM Mode
Channel
3
Output Pin
TIOCA₃
TIOCB₃
4
TIOCA
4
TOCXA
4
TIOCB₄
TOCXB₄
Description
PWM output 1
PWM output 1' (non-overlapping complementary waveform to PWM
output 1)
PWM output 2
PWM output 2' (non-overlapping complementary waveform to PWM
output 2)
PWM output 3
PWM output 3' (non-overlapping complementary waveform to PWM
output 3)
Table 8.8 Register Settings in Complementary PWM Mode
Register
TCNT3
TCNT4
GRA3
GRB3
GRA4
GRB4
Setting
Initially specifies the non-overlap margin (difference to TCNT4)
Initially set to H'0000
Specifies the upper limit value of TCNT3 minus 1
Specifies a transition point of PWM waveforms output from TIOCA₃ and TIOCB₃
Specifies a transition point of PWM waveforms output from TIOCA₄ and TOCXA₄
Specifies a transition point of PWM waveforms output from TIOCB and TOCXB
4
4
Rev.3.00 Mar. 26, 2007 Page 252 of 682
REJ09B0353-0300