Hitachi H8S/2633 Hardware Manual page 477

Example of Synchronous Operation: Figure 11-15 shows an example of synchronous operation.

In this example, synchronous operation and PWM mode 1 have been designated for channels 0 to

2, TGR0B compare match has been set as the channel 0 counter clearing source, and synchronous

clearing has been set for the channel 1 and 2 counter clearing source.

Three-phase PWM waveforms are output from pins TIOC0A, TIOC1A, and TIOC2A. At this

time, synchronous presetting, and synchronous clearing by TGR0B compare match, is performed

for channel 0 to 2 TCNT counters, and the data set in TGR0B is used as the PWM cycle.

For details of PWM modes, see section 11.4.6, PWM Modes.

TCNT0 to TCNT2 values

Synchronous clearing by TGR0B compare match

Figure 11-15 Example of Synchronous Operation