What Is the ATmega8? Classic AVR MCU: Specs and Uses
The ATmega8 is a classic 8-bit AVR microcontroller and the predecessor of the ATmega328P. It offers 8 KB flash, 1 KB SRAM, 512 B EEPROM, 23 I/O and a 6-channel 10-bit ADC (16 MHz, PDIP-28). It is largely code-compatible with the ATmega328P; for larger programs the 328P (32 KB) is preferred.
The ATmega8 is a classic 8-bit AVR microcontroller and the predecessor of the ATmega328P. 28-pin, cheap and easy to learn, it is the basis of many older AVR projects. For the concept, see what is a microcontroller (MCU).
What is the ATmega8 used for?
General embedded control, sensor reading (ADC), PWM for motors/LEDs, serial communication. It is largely code-compatible with the ATmega328P (with less flash/RAM). It can also be programmed with the Arduino IDE (with the right core).
Specifications
| Parameter | Value |
|---|---|
| Core | 8-bit AVR, 16 MHz |
| Flash / SRAM / EEPROM | 8 KB / 1 KB / 512 B |
| I/O | 23 |
| ADC | 6-channel, 10-bit |
| Package | PDIP-28 / TQFP-32 |
Limitations
- Small flash (8 KB); for larger programs use the ATmega328P (32 KB).
- Missing some newer features vs the ATmega328P.
Equivalents
- ATmega328P: the larger-flash successor (Arduino Uno).
- ATmega88 / ATmega168: mid-flash relatives.
- ATtiny85: a smaller 8-pin AVR.
Find it in our catalog
Use the ATmega8 search.