atxmega128a4-mu ATMEL Corporation, atxmega128a4-mu Datasheet - Page 27

• Manufacturer Part Number: atxmega128a4-mu
• Description: Atxmega16a4 8/16-bit Avr Xmega Microcontroller
• Manufacturer: ATMEL Corporation

16. AWEX - Advanced Waveform Extension
16.0.1
16.1
8069A–AVR–02/08
Overview
Features
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The Advanced Waveform Extention (AWEX) provides extra features to the Time/Counter in
Waveform Generation (WG) modes. AWEX enables easy and robust implementation of for
example advanced motor control (AC, BLDC, SR, and Stepper) and power control applications.
Any WG output from the Timer/Counter 0 are split into a complimentary pair of outputs when any
AWEX feature is enabled. These output pairs go through a Dead-Time Insertion (DTI) unit that
enables generation of the non-inverted Low Side (LS) and inverted High Side (HS) of the WG
output with dead time insertion between LS and HS switching. The DTI output will override the
normal port value according to the port override setting. Optionally the final output can be
inverted by using inverted I/O (INVEN) bit setting for port pin (Pxn).
The Pattern Generation unit can be used to generate a synchronized bit pattern on the port it is
connected to. In addition, the waveform generator output from the Compare Channel A can be
distributed to and override all the port pins. When the Pattern generator unit is enabled the DTI
unit i bypassed.
The Fault Protection unit is connected to the Event System, enabling any event to trigger a fault
condition that will disable the AWEX output.
The AWEX is only available on TCC0 and TCE0. The notation of these are AWEXC and
AWEXE.
4-DTI Units (8-pin)
8-bit Resolution
Separate High and Low Side Dead-Time Setting
Double Buffered Dead-Time
Fault Protection (Event Controlled)
Single Channel Multiple Output Operation (for BLDC control)
Double Buffered Pattern Generation
ATxmega A4
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