SH7101 datasheet(201/486 Pages) RENESAS

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8. Multi-Function Timer Pulse Unit (MTU)

Rev.2.00 Sep. 27, 2007 Page 167 of 448

REJ09B0394-0200

8.4.8

Complementary PWM Mode

In the complementary PWM mode, three-phase output of non-overlapping positive and negative

PWM waveforms can be obtained by combining channels 3 and 4.

In complementary PWM mode, TIOC3B, TIOC3D, TIOC4A, TIOC4B, TIOC4C, and TIOC4D

pins function as PWM output pins, the TIOC3A pin can be set for toggle output synchronized with

the PWM period. TCNT_3 and TCNT_4 function as increment/decrement counters.

Table 8.39 shows the PWM output pins used. Table 8.40 shows the settings of the registers used.

A function to directly cut off the PWM output by using an external signal is supported as a port

function.

Table 8.39

Output Pins for Complementary PWM Mode

Channel

Output Pin

Description

TIOC3A

Toggle output synchronized with PWM period (or I/O port)

TIOC3B

PWM output pin 1

TIOC3C

I/O port*

TIOC3D

PWM output pin 1' (non-overlapping negative-phase waveform

of PWM output 1)

TIOC4A

PWM output pin 2

TIOC4C

PWM output pin 2' (non-overlapping negative-phase waveform

of PWM output 2)

TIOC4B

PWM output pin 3

TIOC4D

PWM output pin 3' (non-overlapping negative-phase waveform

of PWM output 3)

Note:

Avoid setting the TIOC3C pin as a timer I/O pin in the complementary PWM mode.

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