Datasheet

351
Reset-Synchronized PWM Mode Operation: Figure 12.36 shows an example of operation in the
reset-synchronized PWM mode. TCNT3 and TCNT4 operate as upcounters. The counter is cleared
when a TCNT3 and TGR3A compare-match occurs, and then begins incrementing from H'0000.
The PWM output pin output toggles with each occurrence of a TGR3B, TGR4A, TGR4B
compare-match, and upon counter clears.
TGR3A
TGR3B
TGR4B
H'0000
TGR4A
TIOC3B
TIOC3D
TIOC4A
TIOC4C
TIOC4B
TIOC4D
Time
TCNT3 and TCNT4
values
Figure 12.36 Reset-Synchronized PWM Mode Operation Example (When the TOCR’s
OLSN = 1 and OLSP = 1)