Atmel ATmega128A-AU 8-bit AVR Microcontroller, 128 KB Flash, TQFP-64
Currently unavailable
No store has this product in stock right now. Prices below are the last ones we recorded.
Prices updated: 13 Oct 2026
Price history
Lowest daily price, last 90 days
Not enough price history yet.
About this product
The ATmega128A-AU is an 8-bit AVR microcontroller with 128 KB of flash, 4 KB of SRAM and 4 KB of EEPROM in a 64-pin TQFP package. It provides up to 53 I/O pins, an 8-channel 10-bit ADC and JTAG debugging, and runs at up to 16 MHz from 4.5 to 5.5 V. Suited to larger embedded designs that need many I/O lines and memory.
Specifications
- Flash memory
- 128 KB
- SRAM
- 4 KB
- EEPROM
- 4 KB
- I/O pins
- Up to 53
- ADC
- 8 channels, 10-bit
- Maximum frequency
- 16 MHz
- Supply voltage
- 4.5 V to 5.5 V
- Package
- 64-pin TQFP
Frequently asked questions
Is it compatible with Arduino Mega?
No. Arduino Mega uses the ATmega2560. The ATmega128A is a different chip with its own pinout, so it needs a custom board or breakout design.
Can I use it on a breadboard?
Not directly. The TQFP-64 package is a surface-mount package at 0.5 mm pitch and needs a TQFP breakout board or a custom PCB.
