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What Is the ATmega32? 40-Pin AVR MCU: Specs and Uses

November 3, 2026 4 min read
Quick answer

The ATmega32 is a classic 40-pin, 32 KB flash 8-bit AVR microcontroller. It is the double-memory sibling of the ATmega16; it offers 32 GPIO and an 8-channel 10-bit ADC (16 MHz, PDIP-40). It is ideal for mid-scale embedded projects (LCD, multi-sensor, motor) and is among the most common 40-pin chips in AVR learning.

The ATmega32 is a classic 40-pin, 32 KB flash 8-bit AVR microcontroller. It is the double-memory sibling of the ATmega16 and one of the most-used 40-pin chips in AVR learning. For the concept, see what is a microcontroller (MCU).

What is the ATmega32 used for?

Mid-scale embedded projects: LCD, keypad, multi-sensor (ADC), motor/relay driving, serial communication. With 32 GPIO and 32 KB flash it is ideal for larger programs where the ATmega16 falls short.

Specifications

ParameterValue
Core8-bit AVR, 16 MHz
Flash / SRAM / EEPROM32 KB / 2 KB / 1 KB
I/O32 (4 ports)
ADC8-channel, 10-bit
PackagePDIP-40 / TQFP-44

Equivalents

  • ATmega16: half flash (16 KB), same package.
  • ATmega328P: the 28-pin Arduino MCU.
  • ATmega644: a 40-pin AVR with more flash.

Find it in our catalog

Use the ATmega32 search.

Frequently Asked Questions

What is the ATmega32?+
The ATmega32 is a classic 40-pin, 32 KB flash 8-bit AVR microcontroller. It is the double-memory sibling of the ATmega16; it offers 32 GPIO and an 8-channel ADC (16 MHz, PDIP-40).
What is the difference between the ATmega32 and the ATmega16?+
Same 40-pin package; the ATmega32 offers double the flash (32 KB) and SRAM (2 KB). For larger programs the ATmega32 is preferred.
Can the ATmega32 be used with Arduino?+
Yes; with a suitable core (e.g. MightyCore) it can be programmed in the Arduino IDE; however, Arduino's standard board is the ATmega328P.
What is an equivalent to the ATmega32?+
The half-flash ATmega16; the 28-pin ATmega328P; and the ATmega644 for more flash.