ATXMEGA8E5_14 datasheet(34/147 Pages) ATMEL

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XMEGA E5 [DATASHEET]

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

17.

Timer Counter type 4 and 5

17.1

Features

Three 16-bit timer/counter

One timer/counter of type 4

Two timer/counter of type 5

32-bit timer/counter support by cascading two timer/counters

Up to four compare or capture (CC) channels

Four CC channels for timer/counters of type 4

Two CC channels for timer/counters of type 5

Double buffered timer period setting

Double buffered CC channels

Waveform generation modes:

Frequency generation

Single-slope pulse width modulation

Dual-slope pulse width modulation

Input capture:

Input capture with noise cancelling

Frequency capture

Pulse width capture

32-bit input capture

Timer overflow and error interrupts/events

One compare match or input capture interrupt/event per CC channel

Can be used with event system for:

Quadrature decoding

Count and direction control

Input capture

Can be used with EDMA and to trigger EDMA transactions

High-resolution extension

Increases frequency and waveform resolution by 4x (2-bit) or 8x (3-bit)

Waveform extension

Low- and high-side output with programmable dead-time insertion (DTI)

Fault extention

Event controlled fault protection for safe disabling of drivers

17.2

Overview

Atmel AVR XMEGA devices have a set of flexible, 16-bit timer/counters (TC). Their capabilities include accurate program

execution timing, frequency and waveform generation, and input capture with time and frequency measurement of digital

signals. Two timer/counters can be cascaded to create a 32-bit timer/counter with optional 32-bit input capture.

A timer/counter consists of a base counter and a set of compare or capture (CC) channels. The base counter can be

used to count clock cycles or events. It has direction control and period setting that can be used for timing. The CC

channels can be used together with the base counter to do compare match control, frequency generation, and pulse

width modulation (PWM) generation, as well as various input capture operations. A timer/counter can be configured for

either capture, compare, or capture and compare function.

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, input capture trigger or to synchronize operations.

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