ATMEGA32U4-AU Microcontroller

PIN and Block DIAGRAM

What is ATMEGA32U4-AU？

ATMEGA32U4-AU is CMOS 8-bit low power microcontroller design based on AVR enhanced RISC structure using microchip technology adding self-programmable 32Kb flash program memory, 1KB EEPROM, 2.5KB SROM, 12 channel, USB 2.0 low speed or full speed module, JTAG interface for on-chip-debug and 10-bit analogue to digital convertor. By allowing the system designer to provide optimization to processing speed and power consumption, the ATmega32U4 achieves throughputs approaching 1 MIPS per MHz by implementing powerful instructions in a single clock cycle.

ATMEGA32U4-AU is designed and manufactured with Atmel’s nonvolatile high-density memory technology. The ISP flash in chip let the program to be reprogrammed in-system by using SPI serial interface. the Atmel ATmega16U2 is a well built powerful microcontroller that offers a highly flexible and cost-effective solution to many embedded control applications by merging In-System Self-Programmable Flash with 8-bit RISC CPU on a monolithic chip.

The ATmega32U4-AU is supported with a full suite of program and system development tools including in-circuit emulators, C compilers, evaluation kits, macro assemblers,  and program debugger/simulators.

Pin Configuration

Features

• Low power AVR 8-bit microcontroller with high performance
• Non-volatile data memories and program
• In-system self-programmable flash of 32KB
• EEPROM of 1KB
• Internal SROM of 2.5KB
• 10,000 Flash/ 100,000 EEPROM write/erase cycles
• 20 years at 85°C/ 100 years at 25°C data retention
• Optional Boot Code Section with Independent Lock Bits
• Software security programming lock
• JTAG Interface
• Full Speed/low speed 2.0 USB device module
• Endpoint 0 for Control Transfers: up to 64-bytes
• Complies fully with Universal Serial Bus Specification REV 2.0
• Supports data transfer rates up to 12Mbit/s and 1.5Mbit/s
• Fully independent 832 bytes USB DPRAM for endpoint memory allocation
• Suspend/Resume Interrupts
• Microcontroller reset on USB Bus Reset without detaching
• USB Bus Connection/Disconnection on Microcontroller Request
• 48MHz from PLL for Full-speed Bus Operation
• The crystal-less operation for Low-Speed mode
• Power-on Reset and Programmable Brown-out Detection
• 26 Programmable I/O Lines
• Internal clock Prescaler and On-the-fly Clock Switching (Int RC / Ext Osc)
• Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended StandbyInternal Calibrated Oscillator
• Power-On Reset and Programmable Brown-out Detection
• 44-lead TQFP Package, 10x10mm
• Operates at 2.7 to 5.5 voltages
• Operate at -40°C to +85°C temperature
• The maximum frequency of 8MHz at 2.7V and 16MHz at 4.5V – Industrial Range

EQUIVALENT AND ALTERNATIVES

ATMEGA32U4-AUR, ATmega32U4-16MU; ATMEGA32U4-MU;  

Applications

There are many applications of ATMEGA32U4-AU in embedded design, development and control systems such as

• Automation and control process
• Consumer electronics
• Senors and instrumentation
• Appliances
• Monitoring medical equipment
• Circuitry to control processes.
• Motor control
• Rectification
• Power regulation
• DAC applications.

DIMENSIONS

ATMEGA32U4-AU Related Products Prices

Parts	Mfr.	Description	Stock	Prices	Buy Now
ATMEGA32U4-AU	Atmel	IC MCU 8BIT 32KB FLASH 44TQFP	7500	$2.965 Lowest
ATMEGA32U4-MU	Atmel	ISP Flash and USB Controller	10	$3.401 Lowest
ATMEGA16U2-AU	Atmel	IC MCU 8BIT 16KB FLASH 32TQFP	5000	$2.949 Lowest
ATMEGA16U4-MU	Atmel	IC MCU 8BIT 16KB FLASH 44QFN	2080	$3.780 Lowest
ATMEGA32U4-MUf	Atmel		2296	$3.832 Lowest

ATMEGA32U4-AU DATASHEET PDF