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ATmega32U4
  • ATmega32U4
  • ATmega32U4

ATmega32U4

In Production

The low-power Microchip 8-bit AVR® RISC-based microcontroller featuring 32 KB self-programming Flash program memory, 2.5 KB SRAM, 1 KB EEPROM, USB 2.0 full-speed/low-speed device, 12-channel 10-bit A/D-converter, and JTAG interface for on-chip-debug. The device achieves up to 16 MIPS throughput at 16 MHz. 2.7-5.5 volt operation. By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching one MIPS per MHz, allowing you to optimize power consumption versus processing speed....

Microchip Technology ATmega32U4 Product Info

16 April 2026 0

Parameters

Program Memory Size (KB)

32

RAM

2560

Data EEPROM (bytes)

1024

Pin Count

44

Operation Voltage Max.(V)

5.5

Operation Voltage Min.(V)

2.7

ADC Resolution Max

10

ADC Channels

12

Zero Cross Detect

False

Number of Comparators

1

SPI

2

I2C

1

Stand alone PWM

8

Low Power

No

Numerically Controlled Oscillator (NCO)

0

Data Signal Modulator (DSM)

0

Features

  • Complies fully with Universal Serial Bus Specification Rev. 2.0
  • Supports data transfer rates up to 12 Mbit/s and 1.5 Mbit/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
  • 48 MHz from PLL for Full-Speed Bus Operation
  • USB Bus Connection/Disconnection on Microcontroller Request
  • Crystal-less operation for Low-Speed mode

Description

The low-power Microchip 8-bit AVR® RISC-based microcontroller featuring 32 KB self-programming Flash program memory, 2.5 KB SRAM, 1 KB EEPROM, USB 2.0 full-speed/low-speed device, 12-channel 10-bit A/D-converter, and JTAG interface for on-chip-debug. The device achieves up to 16 MIPS throughput at 16 MHz. 2.7-5.5 volt operation.

By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching one MIPS per MHz, allowing you to optimize power consumption versus processing speed.

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