MCHPATMEGA8A-AU
Overview
The ATMEGA8A-AU is a high-performance, low-power 8-bit AVR RISC-based microcontroller featuring 8KB of self-programmable Flash memory and 1KB of SRAM. It delivers up to 16 MIPS throughput at 16MHz, balancing efficient processing with a compact 32-pin TQFP surface-mount footprint. The device includes essential integrated peripherals such as a 2-cycle multiplier, multiple sleep modes, and a programmable watchdog timer.
Why Choose This Part
This MCU offers a high endurance memory system with 100,000 EEPROM write cycles and 20-year data retention at 85C. Its advanced RISC architecture executes most instructions in a single clock cycle, providing superior MIPS-per-Watt performance compared to traditional 8-bit architectures.
Applications
Key Specifications
Getting Started
Develop firmware using the Microchip Studio IDE or the AVR-GCC toolchain. Hardware programming is typically performed via the ISP interface using an AVRISP mkII or MPLAB PICkit 4 programmer. For prototyping, the 32-TQFP package can be used with standard breakout boards or integrated into custom PCBs designed for 2.7V to 5.5V operation.
ATMEGA8A Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Package | ADC/DAC | Stock |
|---|---|---|---|
| ATMEGA8A-AU (this part) | TQFP-32 | A/D 8x10b | 8,886 |
| ATMEGA8A-PU | DIP-28 | A/D 6x10b | 12,633 |



