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ATMEGA32U4-AU 8-bit AVR microcontroller with 32KB flash memory, 2.5KB RAM, and 1KB EEPROM. Features USB 2.0, I2C, SPI, and UART connectivity in a 44-TQFP surface mount package.
Mfr Part #:

ATMEGA32U4-AU

Available from 2 distributors
Mfr Name: Microchip Technology
Microchip Technology
8-bit AVR microcontroller with 32KB flash memory, 2.5KB RAM, and 1KB EEPROM. Features USB 2.0, I2C, SPI, and UART connectivity in a 44-TQFP surface mount package.
✓ Total Stock: 7,044 pcs

ATMEGA32U4-AU Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
6,000 pcs
On Request
6000 pcs On Request 1 On Request On Request 21+ On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
1,044 pcs
On Request
1044 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

ATMEGA32U4-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
Speed
Supplier Device Package
Voltage
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ATMEGA32U4-AU Description

Short technical summary and product information.

The ATMEGA32U4-AU is an 8-bit AVR microcontroller from Microchip Technology featuring a high-performance RISC architecture. It operates at up to 16 MHz and provides 32 KB of in-system self-programmable flash memory, 2.5 KB of SRAM, and 1 KB of EEPROM. The device includes a full-speed USB 2.0 module, along with I2C, SPI, and UART/USART interfaces for serial communication.

 

Peripheral features include a brown-out detect/reset, power-on reset, PWM channels, and a watchdog timer. The microcontroller also has a 12-channel 10-bit analog-to-digital converter. It is designed for surface mount assembly in a 44-pin TQFP package (10x10 mm).

 

The operating voltage range is 2.7V to 5.5V, and it can operate over an industrial temperature range of -40°C to +85°C. The device is suitable for a wide range of embedded applications requiring USB connectivity and moderate processing power.

ATMEGA32U4-AU Quick Information

Product Type: Microcontroller
Series: ATmega32U4
Canonical Name: ATmega32U4-AU 8-Bit AVR Microcontroller with 32KB Flash
Subcategory: 8-bit Microcontroller

ATMEGA32U4-AU Compliance

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

ATMEGA32U4-AU Features

  • High performance 8-bit AVR RISC architecture.
  • 32KB self-programmable flash memory.
  • Full-speed USB 2.0 device module.
  • 16 MHz maximum operating frequency.
  • 44-pin TQFP surface mount package.

ATMEGA32U4-AU Applications

  • Suitable for USB keyboard and mouse controllers.
  • Ideal for industrial control and automation.
  • Used in consumer electronics and IoT devices.
  • Applicable for battery-powered portable devices.

ATMEGA32U4-AU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range?

2.7V to 5.5V.

What is the package type?

44-TQFP (10x10 mm).

What is the operating temperature range?

-40°C to +85°C.

Is the component RoHS compliant?

RoHS3 compliant (unverified).

What is the core architecture?

8-bit AVR.

How much flash memory does it have?

32 KB.

What connectivity interfaces are available?

I2C, SPI, UART/USART, USB.

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