SH7041A datasheet(375/923 Pages) RENESAS

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Cascade Connection Operation Examples—Phase Counting Mode: Figure 12.23 shows an

example of operation when the TCNT1 counter is set to count on TCNT2 overflow/underflow and

channel 2 is set to phase counting mode.

The TCNT1 counter increments with a TCNT2 counter overflow and decrements with a TCNT2

underflow.

TCLKC

TCLKD

TCNT2

FFFD

FFFF

FFFE

0000

0001

0000

0002

TCNT1

0000

0001

Figure 12.23 Cascade Connection Operation Example (Phase Counting Mode)

12.4.6

PWM Mode

PWM mode outputs the various PWM waveforms from output pins. Output levels of 0 output, 1

output, or toggle output can be selected as the output level for the compare-match of each TGR.

A period can be set for a register by using the TGR compare-match as a counter clear source. All

five channels can be independently set to PWM mode. Synchronous operation is also possible.

There are two PWM modes:

• PWM mode 1

Generates PWM output using the TGRA and TGRB registers, and TGRC and TGRD registers

as pairs. The initial output values are those established in the TGRA and TGRC registers.

When the values set in TGR registers being used as a pair are equal, output values will not

change even if a compare-match occurs.

A maximum of 8-phase PWM output is possible for PWM mode 1.

• PWM mode 2

Generates PWM output using one TGR register as a period register and another as a duty cycle

TIOR register. When the values set in the period register and duty register are equal, output

values will not change even if a compare-match occurs. PWM mode 2 can be set only for

channels 0, 1, and 2.

SH7041A Datasheet(PDF) 375 Page - Renesas Technology Corp