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ATMEGA32U4-MU, in 3D

ATMEGA32U4-MU

Microchip Technology

-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH VQFN-44-EP(7x7) Microcontrollers (MCU/MPU/SOC) ROHS

Extended
DatasheetJLCPCBLCSCmicrochip/ATMEGA32U4-MU
Category
Microcontrollers (MCU, MPU, SOC)
Package
VQFN-44-EP(7x7)
Pins
45

Overview

The ATMEGA32U4-MU is a microcontroller made by Microchip Technology in a VQFN-44-EP(7x7) package with 45 pins. -40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH VQFN-44-EP(7x7) Microcontrollers (MCU/MPU/SOC) ROHS.

PCBKit's library has its KiCad symbol (MCU_Microchip_ATmega:ATmega32U4-M, from KiCad's library) and its footprint (Package_DFN_QFN:QFN-44-1EP_7x7mm_P0.5mm_EP5.2x5.2mm, from KiCad's library), ready for a KiCad board. 3,419 are in stock at JLCPCB (part C112161). 249 open-source boards in 160 repositories on GitHub use it.

Symbol

PE61UVCC2D-3D+4UGND5UCAP6VBUS7PB08PB19PB210PB311PB712RESET13VCC14GND15XTAL216XTAL117PD018PD119PD220PD321PD522AVCC24PD425PD626PD727PB428PB529PB630PC631PC732HWB/PE233PF736PF637PF538PF439PF140PF041AREF42
MCU_Microchip_ATmega:ATmega32U4-MFrom KiCad's library

Footprint

45
Package_DFN_QFN:QFN-44-1EP_7x7mm_P0.5mm_EP5.2x5.2mmFrom KiCad's library

Parameters

13
ADC (Bit)
10bit
CPU Core
AVR
CPU Maximum Speed
16MHz
Core Size
8 Bit
EEPROM
1KB
Features
Watchdog reset
Number of I/O
26
Operating Temperature
-40℃~+85℃
Oscillator Type
Built-in
Program Memory Type
FLASH
Program Storage Size
32KB
RAM Size
2.5KB
Voltage - Supply
2.7V~5.5V

Order codes

2

Pinout

45
The pins of the ATMEGA32U4-MU
PinNameType
1PE6Input/output
2UVCCPower in
3D-Input/output
4D+Input/output
5UGNDPassive
6UCAPPassive
7VBUSInput
8PB0Input/output
9PB1Input/output
10PB2Input/output
11PB3Input/output
12PB7Input/output
13RESETInput
14VCCPower in
15GNDPower in
16XTAL2Output
17XTAL1Input
18PD0Input/output
19PD1Input/output
20PD2Input/output
21PD3Input/output
22PD5Input/output
23GNDPassive
24AVCCPower in
25PD4Input/output
26PD6Input/output
27PD7Input/output
28PB4Input/output
29PB5Input/output
30PB6Input/output
31PC6Input/output
32PC7Input/output
33HWB/PE2Input/output
34VCCPassive
35GNDPassive
36PF7Input/output
37PF6Input/output
38PF5Input/output
39PF4Input/output
40PF1Input/output
41PF0Input/output
42AREFPassive
43GNDPassive
44AVCCPassive
45GNDPassive

Open-source boards using it

All 249
  • 2 layers87.8 × 59.8 mmFreeDeck SMD 2020-02, the printed circuit board in 3D

    FreeDeck SMD 2020-02

    FreeYourStream/freedeck-hardware

    all the stuff you need to build your own FreeDeck

    37 parts772
  • 2 layers54 × 15 mmXyp gpib, the printed circuit board in 3D

    Xyp gpib

    xyphro/UsbGpib

    Versatile, cheap and portable USB to GPIB converter (USBTMC class based)

    25 parts690MIT
  • 4 layers40.6 × 17.8 mmPD Micro, the printed circuit board in 3D

    PD Micro

    ryan-ma/PD_Micro

    USB-C PD3.0 PPS on ATMega32U4 Arduino board

    61 parts439MIT
  • 2 layers37.3 × 14.7 mmFairberryMainboard, the printed circuit board in 3D

    FairberryMainboard

    Dakkaron/Fairberry

    The goal of this project is to add a BlackBerry Q10 keyboard to non-BlackBerry phones. While this can easily be adapted to suit any other phone with an USB port at the bottom, I will focus on releasing files for the…

    15 parts365
  • 2 layers50 × 90 mmMouse, the printed circuit board in 3D

    Mouse

    biomurph/Mouse

    Repository for Open Source Mouse Firmware and Hardware

    49 parts362MIT
  • 4 layers66 × 115.3 mmMemoryBrakout, the printed circuit board in 3D

    MemoryBrakout

    ccadic/sharpikeebo

    Miniature RPI Zero 2W shield with Sharp memory Display and USB Beyboard

    194 parts143
  • 2 layers33.9 × 19.2 mmDiabolic drive programmer, the printed circuit board in 3D

    Diabolic drive programmer

    unit72784/Diabolic-Drive

    Stealthy, modern, wireless keystroke injection tool in a universal 4 layer double-sided flash drive PCB form factor with 64 GB storage

    21 parts143
  • 2 layers68 × 69.4 mmKowgary16 cfx, the printed circuit board in 3D

    Kowgary16 cfx

    ChrisChrisLoLo/bancouver40

    A 4x10 CFX spaced low-profile mechanical keyboard.

    55 parts113GPL-3.0

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Questions

Is there a KiCad symbol and footprint for the ATMEGA32U4-MU?

Yes. The symbol is MCU_Microchip_ATmega:ATmega32U4-M and the footprint Package_DFN_QFN:QFN-44-1EP_7x7mm_P0.5mm_EP5.2x5.2mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the ATMEGA32U4-MU?

VQFN-44-EP(7x7), with 45 pins. Its footprint is drawn on this page.

Where is the ATMEGA32U4-MU datasheet?

Microchip Technology publishes it: the Datasheet link on this page opens it.

Where can I order the ATMEGA32U4-MU?

JLCPCB lists it as part C112161, with 3,419 in stock; the sellers' links on this page open their listings.

What can replace the ATMEGA32U4-MU?

Parts like it in the library: the ATMEGA32A-MU by Microchip Technology, the ATMEGA324A-MU by Microchip Technology, the ATMEGA324PA-MU by Microchip Technology and the ATXMEGA32A4U-MH by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the ATMEGA32U4-MU?

249 boards in 160 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8