ATXMEGA256A3-AU 8/16-Bit AVR Microcontroller, 256KB Flash, TQFP-64

MCU, 8/16-Bit, XMEGA, 256K Flash, 64TQFP – This high-performance AVR microcontroller from the ATXMEGA A3 series delivers up to 32 MIPS throughput at 32MHz, combining low power consumption with exceptional processing capability. Designed for a wide range of applications, it features 256kB of self-programming flash memory, 8kB boot code section, 16kB SRAM, and 4096B EEPROM, making it ideal for demanding embedded control tasks.

The device includes a 4-channel DMA controller with support for external requests, an 8-channel event system, and a programmable multi-level interrupt controller. It offers flexible clocking options with internal and external sources including PLL, plus power-on reset (POR) and programmable brown-out detection for reliable operation. Sleep modes such as idle, power-down, standby, power-save, and extended standby help optimise energy efficiency.

For programming and debugging, the microcontroller supports both JTAG (IEEE 1149.1 compliant) and PDI (Program and Debug Interface), ensuring seamless development and testing. The ATXMEGA256A3-AU operates over a supply voltage range of 1.6V to 3.6V and is rated for industrial temperature ranges from -40°C to +85°C. It comes in a surface-mount TQFP-64 package with 50 I/O lines and interfaces including I2C, SPI, and UART.

This versatile MCU is well-suited for diverse applications such as building automation, climate control, handheld battery-powered devices, industrial control, motor drives, power management, process control, HVAC systems, communications networking, metering, consumer electronics, fibre optics, and medical equipment.