ATMEGA32U4-MU

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ATMEGA32U4-MU

+Nomenclature

IC MCU 8BIT 32KB FLASH 44VQFN

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Spécifications

Attribut Valeur
Package Tray
Series AVR® ATmega
ProductStatus Active
CoreProcessor AVR
CoreSize 8-Bit
Speed 16MHz
Connectivity I²C, SPI, UART/USART, USB
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
NumberofI/O 26
ProgramMemorySize 32KB (16K x 16)
ProgramMemoryType FLASH
EEPROMSize 1K x 8
RAMSize 2.5K x 8
Voltage-Supply(Vcc/Vdd) 2.7V ~ 5.5V
DataConverters A/D 12x10b
OscillatorType Internal
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 44-VFQFN Exposed Pad

Présentation

Description

The ATmega32U4-MU is a low-power, 8-bit AVR microcontroller from Microchip, featuring a built-in USB 2.0 controller, making it ideal for USB-enabled applications like keyboards, mice, and custom HID devices.
### Key Features:
- Core: 8-bit AVR, 16 MHz max clock speed
- Memory: 32KB Flash, 2.5KB SRAM, 1KB EEPROM
- USB 2.0 Full-Speed: Built-in PHY, no external components needed
- I/O: 26 programmable pins, including ADC, PWM, UART, SPI, I²C
- Packaging: 44-pad QFN (MLF) for compact designs
- Low Power: Multiple sleep modes for energy efficiency
### Applications:
- USB peripherals (keyboards, game controllers)
- Embedded systems requiring USB connectivity
- DIY projects (Arduino Leonardo-compatible)
Its integrated USB support simplifies development, reducing external components. Ideal for compact, cost-sensitive designs.

Equivalent

Equivalent products to the ATMEGA32U4-MU include:
- ATMEGA32U4-AU (TQFP package, industrial temp range).
- ATMEGA16U4-MU (similar but with half the flash).
- AT90USB1286 (more flash/RAM, compatible but larger).
- STM32F103 (ARM-based alternative, requires firmware changes).
- PIC18F4550 (Microchip alternative, different architecture).
These offer similar USB functionality or pin compatibility but may require adjustments in design or code.

Pinout

The ATMEGA32U4-MU is a 44-pin QFN microcontroller with the following key functions:
- GPIO: 26 programmable I/O pins.
- USB 2.0: Built-in full-speed USB controller (no external PHY needed).
- ADC: 10-bit, 12-channel ADC.
- Timers: Four 8/16-bit timers with PWM.
- Communication: UART, SPI, and I²C interfaces.
- Flash: 32KB, SRAM: 2.5KB, EEPROM: 1KB.
- Clock: 8MHz internal (16MHz with external crystal).
Commonly used in USB devices (e.g., keyboards). Pins include power (VCC, GND), analog/digital I/O, and dedicated USB (D+, D−).

Manufacturer

The ATMEGA32U4-MU is manufactured by Microchip Technology, a leading American semiconductor company known for its microcontrollers, analog, and Flash-IP solutions. Microchip acquired Atmel, the original developer of the ATmega series, in 2016.
The company specializes in embedded control systems, serving industries like automotive, industrial, consumer electronics, and IoT. Microchip is recognized for its reliable, low-power, and high-performance microcontrollers, including the popular AVR (ATmega) and PIC families.
The ATMEGA32U4-MU is an 8-bit AVR microcontroller with built-in USB functionality, commonly used in devices like keyboards (e.g., Arduino Leonardo) and other USB peripherals.

Application

The ATmega32U4-MU is widely used in:
1. Embedded Systems – Custom control applications.
2. USB Devices – Keyboards, mice, and game controllers (e.g., Arduino Leonardo).
3. IoT & Wearables – Low-power sensor nodes.
4. Robotics – Motor control and automation.
5. DIY Electronics – Prototyping with USB connectivity.
Its built-in USB interface and 8-bit AVR architecture make it ideal for compact, cost-effective designs requiring direct USB communication.

Package

The ATMEGA32U4-MU comes in a QFN-44 package. This is a 44-pad Quad Flat No-Lead (QFN) package with a compact 7x7mm footprint. It features an exposed thermal pad for improved heat dissipation and is surface-mountable, making it suitable for space-constrained applications like USB devices. The "MU" suffix indicates the QFN variant.

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