embedded-processors-controllers

ATmega32A

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This Microchip datasheet covers the ATmega32A, an 8-bit AVR microcontroller. It details the device's architecture, pinout, and features for system designers needing low-power processing. Key parameters include 32KB In-System Programmable Flash, 1024B EEPROM, and 2KB SRAM. The chip operates at 2.7V to 5.5V with speeds up to 16MHz, consuming only 0.6mA in active mode. It offers extensive peripherals including four PWM channels, an 8-channel 10-bit ADC, and JTAG debug support.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
supply voltage range 2.7 V — 5.5 V
operating temperature -40 °C — 85 °C
clock frequency — 16 MHz —
cpu speed — 16 MHz —
program memory size — 32.8 kB —
ram size — 1.02 kB —
io count — 32 —
adc resolution — 10 bit —
core size — 8 bit —
03 — Alternatives

Closest matches to ATmega32A

CH552G 2.0× lower program memory size, 1.5× higher clock frequency, 1.5× higher cpu speed
MSP430F155IPM 2.0× lower clock frequency, 2.0× higher core size, 2.0× lower cpu speed
STM8S105C4 2.0× lower clock frequency, 2.0× lower program memory size, 2.0× higher ram size
nuvoton-tech-ms51fb9ae-t-20ccf6ff2ecfc478 2.0× lower program memory size, 1.5× higher clock frequency, 1.5× higher cpu speed
ATmega168A 2.0× lower program memory size, 1.2× higher clock frequency, 1.2× higher cpu speed
ATmega328P 2.0× higher ram size, 1.9× higher operating temperature, similar program memory size
ATmega328PB 2.0× higher ram size, 1.4× higher operating temperature, 1.2× higher cpu speed
ATmega48PA 8.2× lower program memory size, 2.0× lower ram size, 1.4× higher operating temperature
04 — FAQ

Frequently asked questions

What is the ADC resolution of the ATmega32A?

The ADC resolution is 10 bit.

What is the maximum clock frequency for the ATmega32A?

The maximum clock frequency is 16 MHz.

What is the core size of the ATmega32A?

The core size is 8 bit.

What is the maximum CPU speed of the ATmega32A?

The maximum CPU speed is 16 MHz.

How many I/O pins does the ATmega32A have?

The ATmega32A has 32 io count.

What is the maximum operating temperature for the ATmega32A?

The maximum operating temperature is 85 °C.

What is the program memory size of the ATmega32A?

The program memory size is 32.8 kB.

What is the RAM size of the ATmega32A?

The RAM size is 1.02 kB.

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