Category Archives: XMega


ATXMega Primer

The XMega series is a powerful addition to the existing arsenal of Atmel’s AVR-core micros. As much as I have personally studied about it so far and felt, the XMega series incorporates many features of conventional 32-bit ARM micros like alternate I/O pin mapping functionalities, sophisticated clock options and data buses, multiple communication platforms that have several uses, variety of capture-PWM options, 12-bit ADCs and DACs, DMA controller, USB hardware, etc. with the good old AVR core. Thus you get one hell of an 8/16 bit MCU that can fulfil your wildest micro desires. In terms of unit cost, resources

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XMega I/O Ports

Any microcontroller must have I/O pins for taking inputs and providing outputs. The ATXMega32A4U just like any other micro has 34 programmable I/O pins divided unevenly amongst six IO ports. Most I/O ports are 8 bit wide. XMega I/Os have digital, analog and special purpose functions. Some I/O pins have more than one use. A quick view of the XMega I/O pins reveals the purpose of these pins.

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