ATXMEGA256D3-AU Datasheet PDF - Microchip

The ATXMEGA256D3-AU is a 8-bit high-performance low-power AVR XMEGA Microcontroller combines 256kB ISP flash memory (8kB boot code section) with read-while-write capabilities, 4kB EEPROM, 16kB SRAM, a four-channel event system, a programmable multi-level interrupt controller, 50 general purpose I/O lines, a 16-bit real time counter, five flexible 16-bit timer/counters with compare modes and PWM, three USARTs, two 2-wire interfaces, two serial peripheral interfaces, one 16-channel/12-bit A/D converter with optional differential input with programmable gain, two analogue comparators with window mode, a programmable watchdog timer with separate internal oscillator, accurate internal oscillators with PLL and prescaler and a programmable brown-out detection. The Program and Debug Interface (PDI), a fast 2-pin interface for programming and debugging, is available.

● Non-volatile program and data memories

● Peripheral features - Four-channel event system, five 16-bit timer/counters

● Power-on reset (POR) and programmable brown-out detection

● Internal and external clock options with PLL and prescaler

● Programmable multilevel interrupt controller

● Five sleep modes

● Programming and debug interface

● PDI (Program and Debug Interface)