ATMEGA8-16AU
Microchip Technology / Atmel
Needs validationmedium risk
ATMEGA8-16AU is a close ATmega8-family option for 5 V designs after MCU review.
Best Alternatives to ATMEGA8A-AU
ATMEGA8A-AU replacement choices should be reviewed as MCU alternates, not simple drop-ins. Package, pinout, voltage, and firmware all matter.
AI replacement insight
Electrical riskmedium
Voltage or clock limits vary.
Package risklow
Kept parts list 32-TQFP.
Firmware riskhigh
Registers, fuses, and timing need review.
Sourcing riskmedium
Lifecycle fields are incomplete.
Can it be replaced directly?
No datasheet-verified pin-compatible replacement is confirmed in this set.
Best replacement path
Use ATMEGA8-16AU only for 5 V designs after pinout and firmware checks; consider ATMEGA88PA-AU for a port.
Main risk
MCU pin function and firmware compatibility are not verified.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | ATMEGA8A-AU | ATMEGA8-16AU | ATMEGA88PA-AU | ATMEGA8L-8AU | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 32-TQFP | 32-TQFP | 32-TQFP | 32-TQFP | 32-TQFP — same package; ATMEGA88PA-AU: same package; ATMEGA8L-8AU: same package |
| Pinout | 32 pins | 32 pins | 32 pins | 32 pins | 32 pins — pin functions not checked; ATMEGA88PA-AU: pin functions not checked; ATMEGA8L-8AU: pin functions not checked |
| Voltage | 2.7-5.5 V | 4.5-5.5 V | 1.8-5.5 V | 2.7-5.5 V | 4.5-5.5 V / 1.8-5.5 V / 2.7-5.5 V — 5 V only use; ATMEGA88PA-AU: wider range; ATMEGA8L-8AU: range aligns |
| Application | AVR 8KB 16MHz | AVR 8KB 16MHz | AVR 8KB 20MHz | 8MHz AVR 8KB | AVR 8KB 16MHz / AVR 8KB 20MHz / 8MHz AVR 8KB — same class; ATMEGA88PA-AU: similar capacity; ATMEGA8L-8AU: lower speed |
| Lifecycle | Active | - | - | - | - — not stated |
| Interface | MCU peripherals | - | I2C/SPI/UART | SPI/TWI/USART | I2C/SPI/UART / SPI/TWI/USART — listed interfaces align; ATMEGA8L-8AU: listed interfaces align |
Application & sourcing insights
Questions & answers
ATMEGA8-16AU is the closest listed option for 5 V designs, but it still needs pinout and firmware review.