ATMEGA32U4-AU

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ATMEGA32U4-AU

IC MCU 8BIT 32KB FLASH 44TQFP

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Specifications

Package Bulk
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-TQFP

Overview

Description

The ATmega32U4-AU is a microcontroller from Atmel's AVR family, featuring a 16-bit RISC architecture. It operates at a clock speed of up to 16 MHz and has 32 KB of flash memory, 2.5 KB of SRAM, and 1 KB of EEPROM. This microcontroller is particularly notable for its integrated USB interface, allowing it to function as a USB device without the need for additional components.
With 26 general-purpose I/O pins, the ATmega32U4 supports various communication protocols, including UART, SPI, and I2C, making it versatile for multiple applications. It also includes analog-to-digital converters (ADCs) and timers, facilitating tasks like sensing and PWM signal generation.
Commonly used in projects involving robotics, automation, and wearable technology, the ATmega32U4-AU is a popular choice in the Arduino community, exemplified by boards like the Arduino Leonardo. Its compact form factor and rich feature set make it suitable for prototyping and developing embedded systems.

Features

The ATmega32U4-AU is a microcontroller from Atmel's AVR family, featuring:
1. Architecture: 8-bit AVR RISC architecture with 32 general-purpose registers.
2. Memory: 32 KB of Flash memory, 2.5 KB of SRAM, and 1 KB of EEPROM.
3. Clock Speed: Operates at up to 16 MHz.
4. I/O Ports: 26 programmable I/O lines, 5 of which can be used as PWM outputs.
5. Communication Interfaces: Supports USB 2.0, SPI, I2C, and UART protocols.
6. Analog Features: 10-bit ADC with 8 channels and a 12-bit DAC.
7. Timers: 3 timer/counters (8-bit and 16-bit) for precise timing and PWM generation.
8. Interrupts: interrupts with up to 24 external interrupt sources.
9. Low Power Consumption: Multiple low-power modes for energy efficiency.
10. Package: Available in a 32-pin TQFP package.
The ATmega32U4 is widely used in applications like Arduino Leonardo and Micro, enabling easy USB interfacing and versatility in embedded projects.

Package

The ATmega32U4-AU is packaged in a 32-lead QFN (Quad Flat No-lead) or TQFP (Thin Quad Flat Package) format. The QFN package measures 7mm x 7mm, while the TQFP package typically measures 10mm x 10mm, allowing for surface mounting on PCBs.

Pinout

The ATmega32U4-AU is a microcontroller from Microchip Technology, featuring a total of 32 pins in a 32-lead TQFP package.
Pin Functions:
1. Digital I/O: 23 pins can be configured as digital input/output.
2. Analog Inputs: 12 pins can serve as analog inputs (ADC).
3. PWM Outputs: 7 pins are capable of PWM output.
4. Serial Communication: Supports UART, I2C, and SPI protocols through dedicated pins.
5. USB Interface: Integrated USB controller for direct USB communication, facilitating connections with various devices.
6. External Interrupts: 5 pins are configurable for external interrupts.
7. Reset Pin: 1 pin for external reset functionality.
The ATmega32U4-AU is widely used in applications requiring USB connectivity, such as in Arduino Leonardo and other similar platforms.

Manufacturer

The ATmega32U4-AU is manufactured by Microchip Technology Inc., a leading semiconductor company based in the United States. Microchip specializes in designing and manufacturing microcontrollers, analog semiconductors, and memory products, catering primarily to embedded control applications. Founded in 1989, the company focuses on providing high-quality, cost-effective solutions for a variety of industries, including automotive, industrial, consumer electronics, and more. The ATmega32U4, part of the AVR microcontroller family, is notable for its USB connectivity and is often used in projects involving Arduino boards. Microchip Technology is recognized for its commitment to innovation and customer support, making it a key player in the semiconductor industry.

Application

The ATmega32U4-AU is commonly used in various applications, including:
1. Embedded Systems: For controlling devices and sensors.
2. USB Devices: Acts as a USB interface for peripherals.
3. Robotics: For motor control and sensor integration.
4. Wearable Technology: In health monitors and fitness trackers.
5. Prototyping: In DIY electronics and Arduino projects.
6. Home Automation: Controlling smart home devices.
7. Data Acquisition: For collecting and processing data from sensors.

Equivalent

Equivalent products to the ATmega32U4-AU include the ATmega16U4, ATmega32U2, and ATmega32U4-MU, which all feature similar functionality and architecture. For more performance-oriented applications, consider the ATmega2560 or ATmega1284. Other microcontrollers with USB capability, such as the Microchip PIC18F4450 or the STM32F103 series, can also serve as alternatives depending on specific project requirements.

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

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