ATXMEGA8E5_14 datasheet(36/147 Pages) ATMEL

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XMEGA E5 [DATASHEET]

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

18.

WeX – Waveform Extension

18.1

Features

Module for more customized and advanced waveform generation

Optimized for various type of motor, ballast, and power stage control

Output matrix for timer/counter waveform output distribution

Configurable distribution of compare channel output across port pins

Redistribution of dead-time insertion resource between TC4 and TC5.

Four dead-time insertion (DTI) units, each with

Complementary high and low side with non overlapping outputs

Separate dead-time setting for high and low side

8-bit resolution

Four swap (SWAP) units

Separate port pair or low high side drivers swap

Double buffered swap feature

Pattern generation creating synchronized bit pattern across the port pins

Double buffered pattern generation

18.2

Overview

The waveform extension (WEX) provides extra functions to the timer/counter in waveform generation (WG) modes. It is

primarily intended for motor control, ballast, LED, H-bridge, power converters, and other types of power control

applications. The WEX consist of five independent and successive units, as shown in Figure 18-1.

Figure 18-1. Waveform extension and closely related peripherals.

The output matrix (OTMX) can distribute and route out the waveform outputs from timer/counter 4 and 5 across the port

pins in different configurations, each optimized for different application types. The dead time insertion (DTI) unit splits the

four lower OTMX outputs into a two non-overlapping signals, the non-inverted low side (LS) and inverted high side (HS)

of the waveform output with optional dead-time insertion between LS and HS switching.

SWAP1

DTI1

SWAP1

DTI1

SWAP1

DTI1

SWAP1

DTI1

WEX

Px7

Px6

Px5

Px4

Px3

Px2

Px1

Px0

Fault

Unit 5

Fault

Unit 4

T/C4

T/C5

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