ATXMEGA128B3-AU ATMEL [ATMEL Corporation], ATXMEGA128B3-AU Datasheet - Page 36

• Manufacturer Part Number: ATXMEGA128B3-AU
• Description: 8/16-bit Atmel XMEGA B3 Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

8074B–AVR–02/12
A timer/counter can be clocked and timed from the peripheral clock with optional prescaling or
from the event system. The event system can also be used for direction control and capture trig-
ger or to synchronize operations.
There are two differences between timer/counter type 0 and type 1. Timer/counter 0 has four CC
channels, and timer/counter 1 has two CC channels. All information related to CC channels 3
and 4 is valid only for timer/counter 0. Only Timer/Counter 0 has the split mode feature that split
it into 2 8-bit Timer/Counters with four compare channels each.
Some timer/counters have extensions to enable more specialized waveform and frequency gen-
eration. The advanced waveform extension (AWeX) is intended for motor control and other
power control applications. It enables low- and high-side output with dead-time insertion, as well
as fault protection for disabling and shutting down external drivers. It can also generate a syn-
chronized bit pattern across the port pins.
The Advanced Waveform Extension can be enabled to provide extra and more advanced fea-
tures for the Timer/Counter. This are only available for Timer/Counter 0. See
Timer/Counter Type 2” on page 37
The high-resolution (hi-res) extension can be used to increase the waveform output resolution
by four or eight times by using an internal clock source running up to four times faster than the
peripheral clock. See
Figure 16-1. Overview of a Timer/Counter and closely related peripherals
PORTC has one Timer/Counter 0 and one Timer/Counter1. Notation of these are TCC0
(Time/Counter C0), and TCC1 respectively.
Timer/Counter
Base Counter
Compare/Capture Channel A
Timer Period
Comparator
Compare/Capture Channel B
Counter
Buffer
Compare/Capture Channel C
Compare/Capture Channel D
Control Logic
Generation
”Hi-Res – High Resolution Extension” on page 39
Waveform
Capture
Control
for more details.
Prescaler
System
AWeX
Event
Dead-Time
Insertion
clk
PER
Generation
Protection
Pattern
Fault
for more details.
XMEGA B3
clk
PER4
”TC2 –16-bit
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