ATMEGA32U4RC-AU The ATMEGA32U4RC-AU is an 8-bit AVR microcontroller from Microchip Technology with 32KB Flash memory, 2.5KB RAM, and USB connectivity. It is housed in a 44-TQFP package and operates at up to 16MHz.
Mfr Part #:

ATMEGA32U4RC-AU

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The ATMEGA32U4RC-AU is an 8-bit AVR microcontroller from Microchip Technology with 32KB Flash memory, 2.5KB RAM, and USB connectivity. It is housed in a 44-TQFP package and operates at up to 16MHz.
✓ Total Stock: 3 pcs

ATMEGA32U4RC-AU Available from 1 distributor

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3 pcs
3 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

ATMEGA32U4RC-AU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Data Converters
EEPROM Size
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
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ATMEGA32U4RC-AU Description

Short technical summary and product information.

The ATMEGA32U4RC-AU is a high-performance, low-power 8-bit AVR microcontroller from Microchip Technology. It features 32KB of in-system self-programmable Flash memory, 2.5KB of internal SRAM, and 1KB of EEPROM. The device operates at a maximum speed of 16MHz, delivering up to 16 MIPS throughput.

 

This microcontroller includes a rich set of peripherals such as brown-out detect/reset, power-on reset, PWM, and watchdog timer. It offers 26 I/O lines and supports connectivity options including I2C, SPI, UART/USART, and USB. The integrated USB 2.0 full-speed/low-speed device module complies with USB Specification Rev 2.0.

 

The ATMEGA32U4RC-AU is supplied in a 44-TQFP (10x10mm) surface-mount package and operates over a temperature range of -40°C to 85°C. The supply voltage range is 2.7V to 5.5V. It includes an internal oscillator and features a 12-channel 10-bit analog-to-digital converter.

ATMEGA32U4RC-AU Quick Information

Product Type: Microcontroller
Series: ATmega32U4
Canonical Name: Microchip Technology ATmega32U4RC-AU 8-bit AVR Microcontroller
Subcategory: 8-bit Microcontroller

ATMEGA32U4RC-AU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

ATMEGA32U4RC-AU Features

  • 8-bit AVR core with 16MHz maximum speed.
  • 32KB Flash program memory with 2.5KB SRAM.
  • USB 2.0 full-speed device module with integrated PLL.
  • 26 I/O lines with I2C, SPI, and UART/USART connectivity.
  • Operates from 2.7V to 5.5V over -40°C to 85°C.

ATMEGA32U4RC-AU Applications

  • Ideal for USB-enabled embedded control applications.
  • Suitable for industrial control and automation systems.
  • Used in consumer electronics with human interface devices.
  • Applicable in low-power sensor and data acquisition nodes.

ATMEGA32U4RC-AU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating temperature range of the ATMEGA32U4RC-AU?

The operating temperature range is -40°C to 85°C.

What is the supply voltage range for this microcontroller?

The supply voltage range is 2.7V to 5.5V.

What package does the ATMEGA32U4RC-AU come in?

It comes in a 44-TQFP (10x10mm) surface-mount package.

How much Flash memory does the ATMEGA32U4RC-AU have?

It has 32KB of Flash program memory.

Does the ATMEGA32U4RC-AU have USB connectivity?

Yes, it supports USB connectivity.

What is the maximum clock speed of the ATMEGA32U4RC-AU?

The maximum clock speed is 16MHz.

Is the ATMEGA32U4RC-AU RoHS compliant?

RoHS status is listed as RoHS3 Compliant but is unverified.

ATMEGA32U4RC-AU Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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ATMEGA32U4-AU
ATMEGA32U4-AU
Atmel
ATMEGA32U4-AU is an 8-bit AVR microcontroller from Atmel with 32KB Flash, 2.5KB RAM, and 1KB EEPROM. Operating at 16MHz, it features USB, I2C, SPI, UART connectivity and is housed in a 44-TQFP package.
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ATMEGA32U4-AUR
ATMEGA32U4-AUR
Microchip Technology
This is an 8-bit AVR microcontroller with 32KB Flash and USB 2.0 support. It operates at 16MHz from 2.7V to 5.5V and is housed in a 44-TQFP package.
View Part
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