H8SLASH3003 datasheet(361/715 Pages) RENESAS

361 / 715 page

Clearing Procedure for Complementary PWM Mode: Figure 10-34 shows the steps to clear

complementary PWM mode. First, (1) set combination mode (CMD) 1 and 0 bits in the timer

function control register (TFCR) from 10 back to 00 or 01, to switch from complementary PWM

mode to normal operating mode. Next, (2) wait at least one period of the counter input clock used

by channels 3 and 4, then clear counter start (STR) 3 and 4 bits in the timer start register (TSTR)

to stop operation of counters TCNT3 and TCNT4 in channels 3 and 4.

If a procedure other than that described above is used to clear complementary PWM mode, the

output waveform may not change according to the setting when complementary PWM mode is set

again.

Figure 10-34 Clearing Procedure for Complementary PWM Mode

343

Complementary PWM mode

1. Clear the CMD1 bit of TFCR to 0 to

set channels 3 and 4 to normal

operating mode.

Normal operating mode

Clear complementary

PWM mode

Stop couating

2. After setting channels 3 and 4 to

normal operating mode, wait at least

one counter clock period, then clear

bits STR3 and STR4 of TSTR to 0 to

stop counter operation of TCNT3 and

TCNT4.

H8/3003 数据表(PDF) 361 Page - Renesas Technology Corp