ATMEGA32U4-MU

Description

The ATMEGA32U4-MU is a high-performance, low-power 8-bit AVR® microcontroller with an integrated USB 2.0 controller and a rich set of peripherals. Built on advanced RISC architecture, it delivers up to 16 MIPS of processing power and includes 32KB of self-programmable Flash, 2.5KB SRAM, and 1KB EEPROM. It also features a USB bootloader and multiple programming interfaces such as ISP and JTAG for flexible development.

The device offers extensive built-in functionality including multiple timers, PWM outputs, 12-channel ADC, USART, SPI, and I²C interfaces, making it well-suited for complex control and data communication tasks. Ideal for USB HID applications, digital instrumentation, custom embedded systems, and Arduino-compatible development boards, the ATMEGA32U4-MU is a reliable choice for both hobbyists and professional developers.

Feature：

• High Performance, Low Power AVR® 8-Bit Microcontroller
• Advanced RISC Architecture
• 135 Powerful Instructions – Most Single Clock Cycle Execution
• 32 x 8 General Purpose Working Registers
• Fully Static Operation
• Up to 16 MIPS Throughput at 16MHz
• On-Chip 2-cycle Multiplier
• Non-volatile Program and Data Memories
• 16/32KB of In-System Self-Programmable Flash
• 1.25/2.5KB Internal SRAM
• 512Bytes/1KB Internal EEPROM
• Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
• Data retention: 20 years at 85C/ 100 years at 25C(1)
• Optional Boot Code Section with Independent Lock Bits
• In-System Programming by On-chip Boot Program
• True Read-While-Write Operation
• Parts using external XTAL clock are pre-programed with a default USB bootloader
• Programming Lock for Software Security
• JTAG (IEEE® std. 1149.1 compliant) Interface
• Boundary-scan Capabilities According to the JTAG Standard
• Extensive On-chip Debug Support
• Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
• USB 2.0 Full-speed/Low Speed Device Module with Interrupt on Transfer Completion
• Complies fully with Universal Serial Bus Specification Rev 2.0
• Supports data transfer rates up to 12Mbit/s and 1.5Mbit/s
• Endpoint 0 for Control Transfers: up to 64-bytes
• Six Programmable Endpoints with IN or Out Directions and with Bulk, Interrupt or Isochronous Transfers
• Configurable Endpoints size up to 256 bytes in double bank mode
• Fully independent 832 bytes USB DPRAM for endpoint memory allocation
• Suspend/Resume Interrupts
• CPU Reset possible on USB Bus Reset detection
• 48MHz from PLL for Full-speed Bus Operation
• USB Bus Connection/Disconnection on Microcontroller Request
• Crystal-less operation for Low Speed mode
• Peripheral Features
• On-chip PLL for USB and High Speed Timer: 32 up to 96MHz operation
• One 8-bit Timer/Counter with Separate Prescaler and Compare Mode
• Two 16-bit Timer/Counter with Separate Prescaler, Compare- and Capture Mode
• One 10-bit High-Speed Timer/Counter with PLL (64MHz) and Compare Mode
• Four 8-bit PWM Channels
• Four PWM Channels with Programmable Resolution from 2 to 16 Bits
• Six PWM Channels for High Speed Operation, with Programmable Resolution from 2 to 11 Bits
• Output Compare Modulator
• 12-channels, 10-bit ADC (features Differential Channels with Programmable Gain)
• Programmable Serial USART with Hardware Flow Control
• Master/Slave SPI Serial Interface
• Byte Oriented 2-wire Serial Interface
• Programmable Watchdog Timer with Separate On-chip Oscillator
• On-chip Analog Comparator
• Interrupt and Wake-up on Pin Change
• On-chip Temperature Sensor
• Special Microcontroller Features
• Power-on Reset and Programmable Brown-out Detection
• Internal 8MHz Calibrated Oscillator
• Internal clock prescaler and On-the-fly Clock Switching (Int RC / Ext Osc)
• External and Internal Interrupt Sources
• Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
• I/O and Packages
• All I/O combine CMOS outputs and LVTTL inputs
• 26 Programmable I/O Lines
• 44-lead TQFP Package, 10x10mm
• 44-lead QFN Package, 7x7mm
• Operating Voltages：2.7 - 5.5V
• Operating temperature：Industrial (-40°C to +85°C)
• Maximum Frequency
• 8MHz at 2.7V - Industrial range
• 16MHz at 4.5V - Industrial range

Specification

Documents

Datasheet

List

• ATMEGA32U4-MU x 1