ATxmega256A3U

8-bit AVR · AVR XMEGA · avrxmega6 · signature 1E 98 42

The ATxmega256A3U is an 8-bit AVR XMEGA microcontroller from Microchip with 256 KB of flash, 16 KB of SRAM, 4 KB of EEPROM, running up to 32 MHz from 1.6 to 3.6 V, with 50 I/O pins and 105 interrupt vectors. It comes in QFP-QFN-64.

Flash256 KB

SRAM16 KB

EEPROM4 KB

Clock32 MHz

I/O pins50

Vectors105

Timers

2-bit4

TC7

PWM pins28

Watchdogyes

Analog

ADC inputs16

Comparator2

DAC1

Communication

USART7

SPI3

I²C (TWI)2

USB device1

Power & clock

Supply1.6 – 3.6 V

Max clock32 MHz

Packages

QFP-QFN-6464 pins

Explore the ATxmega256A3U

Pinout1 package, every pin and its functions Memory mapFlash, SRAM, EEPROM and the registers, at their addresses Registers707 registers with every bit InterruptsThe 105-vector table Peripherals67 blocks with their registers and pins Fuses & lock bitsCalculator with the factory defaults