ATXMEGA256A3U-AU
8 Bit MCU, Low Power High Performance, AVR ATxmega Family ATXmega A Series Microcontrollers, AVR

| Manufacturer | MICROCHIP |
|---|---|
| Manufacturer Part No | ATXMEGA256A3U-AUCopy |
| Manufacturer Standard Lead Time | 6 weeks |
| Order Code | 2066307 |
| Product Range | AVR ATxmega Family ATXmega A Series Microcontrollers |
| Your Part Number | |
| Technical Datasheet |
Need more?
| Quantity | Price |
|---|---|
| 1+ | Php565.700 |
| 25+ | Php469.800 |
| 100+ | Php460.800 |
Product Information
| Manufacturer | MICROCHIP |
|---|---|
| Manufacturer Part No | ATXMEGA256A3U-AUCopy |
| Manufacturer Standard Lead Time | 6 weeks |
| Order Code | 2066307 |
| Product Range | AVR ATxmega Family ATXmega A Series Microcontrollers |
| Technical Datasheet | |
| Product Range | AVR ATxmega Family ATXmega A Series Microcontrollers |
| Device Core | AVR |
| Operating Frequency Max | 32MHz |
| Program Memory Size | 256KB |
| No. of Pins | 64Pins |
| IC Case / Package | TQFP |
| No. of I/O's | 50I/O's |
| Interfaces | I2C, SPI, UART, USB |
| RAM Memory Size | 16KB |
| ADC Channels | 16Channels |
| ADC Resolution | 12Bit |
| Supply Voltage Min | 1.6V |
| Supply Voltage Max | 3.6V |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 85°C |
| IC Mounting | Surface Mount |
| MCU Family | AVR ATxmega |
| MCU Series | ATxmega A |
| Qualification | - |
| MSL | MSL 3 - 168 hours |
| SVHC | No SVHC (04-Feb-2026) |
Product Overview
The ATXMEGA256A3U-AU is a high performance, low power 8/16bit AVR XMEGA A3U microcontroller in 64 pin TQFP package. This device achieves throughputs approaching 1MIPS per MHz by executing powerful instructions in a single clock cycle. This allows system designer to optimize power consumption versus processing speed. The device has seven 16bit timer/counters, 16bit real time counter (RTC) with separate oscillator, two sixteen channel, 12bit ADC, one two channel, 12bit DAC, four analogue comparators and programmable watchdog timer with separate on-chip ultra low power oscillator.
- Maximum operating frequency of 32MHz
- 256KB of in-system self programmable flash
- 4KB EEPROM and 16KB internal SRAM memory
- Operating voltage range from 1.6V to 3.6V
- 50 programmable I/O pins
- JTAG (IEEE 1149.1 compliant) and PDI (program and debug) interfaces
- QTouch library support
- 16bit real time counter (RTC) with separate oscillator
- USB 2.0, seven USART, two I2C and SMBus interfaces
- Operating temperature range from -40°C to 85°C
Applications
Embedded Design & Development, Industrial, Motor Drive & Control, Automation & Process Control, Communications & Networking, Metering, Consumer Electronics, Medical
Technical Specifications
| Product Range | AVR ATxmega Family ATXmega A Series Microcontrollers |
|---|---|
| Operating Frequency Max | 32MHz |
| No. of Pins | 64Pins |
| No. of I/O's | 50I/O's |
| RAM Memory Size | 16KB |
| ADC Resolution | 12Bit |
| Supply Voltage Max | 3.6V |
| Operating Temperature Max | 85°C |
| MCU Family | AVR ATxmega |
| Qualification | - |
| SVHC | No SVHC (04-Feb-2026) |
| Device Core | AVR |
|---|---|
| Program Memory Size | 256KB |
| IC Case / Package | TQFP |
| Interfaces | I2C, SPI, UART, USB |
| ADC Channels | 16Channels |
| Supply Voltage Min | 1.6V |
| Operating Temperature Min | -40°C |
| IC Mounting | Surface Mount |
| MCU Series | ATxmega A |
| MSL | MSL 3 - 168 hours |
Technical Docs (3)
Associated Products
2 Products Found
Legislation and Environmental
| Country of Origin: Country in which last significant manufacturing process was carried outCountry of Origin: | United States Country in which last significant manufacturing process was carried out |
|---|---|
| Tariff No: | 85423190 |
| US ECCN: | 5A992.c |
| EU ECCN: | NLR |
| RoHS Compliant: | Yes RoHS |
| RoHS Phthalates Compliant: | Yes RoHS |
| SVHC: | No SVHC (04-Feb-2026) |
| Download Product Compliance Certificate | Product Compliance Certificate |
| Weight (kg): | .002599 |
