ATXMEGA8E5_14 datasheet(35/147 Pages) ATMEL

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XMEGA E5 [DATASHEET]

Atmel-8153I–AVR-ATxmega8E5-ATxmega16E5-ATxmega32E5_Datasheet–08/2014

There are two differences between timer/counter type 4 and type 5. Timer/counter 4 has four CC channels, and

timer/counter 5 has two CC channels. Both timer/counter 4 and 5 can be set in 8-bit mode, allowing the application to

double the number of compare and capture channels that then get 8-bit resolution.

Some timer/counters have extensions that enable more specialized waveform generation. The waveform extension

(WeX) is intended for motor control, ballast, LED, H-bridge, power converters, and other types of power control

applications. It enables more customized waveform output distribution, and low- and high-side channel output with

optional dead-time insertion. It can also generate a synchronized bit pattern across the port pins. The high-resolution (hi-

res) extension can increase the waveform resolution by four or eight times by using an internal clock source four times

faster than the peripheral clock. The fault extension (FAULT) enables fault protection for safe and deterministic handling,

disabling and/or shut down of external drivers.

A block diagram of the 16-bit timer/counter with extensions and closely related peripheral modules (in grey) is shown in

Figure 17-1.

Figure 17-1. 16-bit timer/counter and closely related peripherals.

PORTC has one timer/counter 4 and one timer/counter 5. PORTD has one timer/counter 5. Notation of these are TCC4

(timer/counter C4), TCC5 and TCD5 respectively.

Compare/Capture Channel D

Compare/Capture Channel C

Compare/Capture Channel B

Compare/Capture Channel A

Waveform

Generation

Buffer

Comparator

Capture

Control

Base Counter

Counter

Control Logic

Timer Period

Prescaler

Event

System

Timer/Counter

clkPER4

clkPER

WeX

ATXMEGA8E5 Datasheet(PDF) 35 Page - ATMEL Corporation