AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 968

• Manufacturer Part Number: AT32UC3C1512C Automotive
• Manufacturer: Atmel Corporation

33.6.2
33.6.2.1
Figure 33-3. Functional View of the Channel Block Diagram
9166C–AVR-08/11
channel x
selector
counter
clock
PWM Channel
update
period
duty-
cycle
Block Diagram
channel 0
counter
MUX
Each of the 4 channels is composed of six blocks:
• A clock selector which selects one of the clocks provided by the clock generator (described in
• A counter clocked by the output of the clock selector. This counter is incremented or
• A comparator used to compute the OCx output waveform according to the counter value and
• A 2-bit configurable gray counter enables the stepper motor driver. One gray counter drives 2
• A dead-time generator providing two complementary outputs (DTOHx/DTOLx) which allows
• An output override block that can force the two complementary outputs to a programmed
• An asynchronous fault protection mechanism that has the highest priority to override the two
arator
comp
Section 33.6.1 on page
decremented according to the channel configuration and comparators matches. The size of
the counter is 20 bits.
the configuration. The counter value can be the one of the channel counter or the one of the
channel 0 counter according to SYNCx bit in the
1004
channels.
to drive external power control switches safely.
value (OOOHx/OOOLx).
complementary outputs in case of fault detection (PWMHx/PWMLx).
SYNCx
(SCM).
2-bit gray
counter z
OCx
Channel x
dead-time
generator
966).
z=0 (x=0, y=1)
z=1 (x=2, y=3)
z=2 (x=4, y=5)
DTOHx
DTOLx
override
output
”Sync Channels Mode Register” on page
OOOHx
OOOLx
protection
fault
AT32UC3C
PWMHx
PWMLx
968