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ATMEGA32U4 on a board, in 3D

ATMEGA32U4

Unknown maker

unknown/ATMEGA32U4
Category
Uncategorised
Pins
44

Overview

The ATMEGA32U4 is an uncategorised made by Unknown maker with 44 pins.

PCBKit's library has its KiCad symbol (OPL_IC:MCU-ATMEGA32U4-AU(TQFP44), from Eagle libraries) and its footprint (OPL_IC:TQFP44-0.8-9.6X9.6MM, from Eagle libraries), ready for a KiCad board. 224 open-source boards in 160 repositories on GitHub use it.

Symbol

PE6(INT.6/AIN0)1UVCC2D-3D+4UGND5UCAP6VBUS7PB0(SS/PCINT0)8PB1(PCINT1/SCLK)9PB2(PDI/PCINT2/MOSI)10PB3(PD0/PCINT3/MISO)11PB7(PCINT7/OC0A/OC1C/RTS)12RESET13VCC14GND15XTAL216XTAL117PD0(OC0B/SCL/INT0)18PD1(SDA/INT1)19PD2(RXD1/INT2)20PD3(TXD1/INT3)21PD5(XCLK1/CTS)22GND23AVCC24PD4(ICP1/ADC8)25PD6(T1/ADC9/OC4D)26PD7(T0/OC4D/ADC10)27PB4(PCINT4/ADC11)28PB5(PCINT5/OC1A/ADC12/OC4B)29PB6(PCINT6/OC1B/OC4B/ADC13)30PC6(OC3A/OC4A)31PC7(ICP3/CLK0/OC4A)32PE2(HWB)33VCC34GND35PF7(ADC7/TDI)36PF6(ADC6/TDO)37PF5(ADC5/TMS)38PF4(ADC4/TCK)39PF1(ADC1)40PF0(ADC0)41AREF42GND43AVCC44
OPL_IC:MCU-ATMEGA32U4-AU(TQFP44)From Eagle libraries

Footprint

1234567891011121314151617181920212223242526272829303132333435363738394041424344
OPL_IC:TQFP44-0.8-9.6X9.6MMFrom Eagle libraries

From the datasheet

1
Takes at most
27 mA · VCC, active mode, 16 MHz, 5 V, max · p. 25

Pinout

44
The pins of the ATMEGA32U4
PinNameType
1PE6(INT.6/AIN0)Unspecified
2UVCCUnspecified
3D-Unspecified
4D+Unspecified
5UGNDUnspecified
6UCAPUnspecified
7VBUSUnspecified
8PB0(SS/PCINT0)Unspecified
9PB1(PCINT1/SCLK)Unspecified
10PB2(PDI/PCINT2/MOSI)Unspecified
11PB3(PD0/PCINT3/MISO)Unspecified
12PB7(PCINT7/OC0A/OC1C/RTS)Unspecified
13RESETUnspecified
14VCCUnspecified
15GNDUnspecified
16XTAL2Unspecified
17XTAL1Unspecified
18PD0(OC0B/SCL/INT0)Unspecified
19PD1(SDA/INT1)Unspecified
20PD2(RXD1/INT2)Unspecified
21PD3(TXD1/INT3)Unspecified
22PD5(XCLK1/CTS)Unspecified
23GNDUnspecified
24AVCCUnspecified
25PD4(ICP1/ADC8)Unspecified
26PD6(T1/ADC9/OC4D)Unspecified
27PD7(T0/OC4D/ADC10)Unspecified
28PB4(PCINT4/ADC11)Unspecified
29PB5(PCINT5/OC1A/ADC12/OC4B)Unspecified
30PB6(PCINT6/OC1B/OC4B/ADC13)Unspecified
31PC6(OC3A/OC4A)Unspecified
32PC7(ICP3/CLK0/OC4A)Unspecified
33PE2(HWB)Unspecified
34VCCUnspecified
35GNDUnspecified
36PF7(ADC7/TDI)Unspecified
37PF6(ADC6/TDO)Unspecified
38PF5(ADC5/TMS)Unspecified
39PF4(ADC4/TCK)Unspecified
40PF1(ADC1)Unspecified
41PF0(ADC0)Unspecified
42AREFUnspecified
43GNDUnspecified
44AVCCUnspecified

Open-source boards using it

All 224
  • 2 layers89 × 100 mmHub16, the printed circuit board in 3D

    Hub16

    joshajohnson/Hub16

    A macro pad with 16 keys, two rotary encoders, a four port USB hub, and plenty of LEDs!

    132 parts388
  • 2 layers22.9 × 36.7 mmUsb2usb, the printed circuit board in 3D

    Usb2usb

    tmk/USB2USB_Converter

    USB to USB keyboard protocol converter supported by TMK keyboard firmware

    26 parts152
  • 2 layers303.6 × 96.1 mmKyuu, the printed circuit board in 3D

    Kyuu

    Quantrik/Kyuu

    Kyuu Keyboard Design

    154 parts127
  • 2 layers114.9 × 77 mmTestProject, the printed circuit board in 3D

    TestProject

    Quarren42/SPIN

    12 key, 3 encoder USB-C Macro Pad

    117 parts104CC-BY-SA-4.0
  • 2 layers444.1 × 151.2 mmGh80-3003, the printed circuit board in 3D

    Gh80-3003

    evyd13/gh80-series

    GH80-1800, GH80-3700 and GH80-3003 by Evy (aka anykeys.eu)

    287 parts69CC-BY-SA-4.0
  • 2 layers232.2 × 76.7 mmCpm43, the printed circuit board in 3D

    Cpm43

    Gtrx0/cpm43

    40% mechanical keyboard with rgb underglow and single color backlight

    188 parts59
  • 2 layers373.2 × 131.8 mmNt980, the printed circuit board in 3D

    Nt980

    evyd13/nt-series

    Replacement PCBs for the FC660m, FC750r and FC980m.

    242 parts56CC-BY-SA-4.0
  • 2 layers17.8 × 33 mmAlvaro, the printed circuit board in 3D

    Alvaro

    Kaleidogeist/Alvaro

    Pro Micro-compatible 32u4 Breakout Board

    28 parts53Apache-2.0

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A live frame, for any web page
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A picture
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A picture that opens the part, for a README
[![ATMEGA32U4](https://pcbkit.io/embed/parts/unknown/ATMEGA32U4.jpg?size=s)](https://pcbkit.io/parts/unknown/ATMEGA32U4)

Questions

Is there a KiCad symbol and footprint for the ATMEGA32U4?

Yes. The symbol is OPL_IC:MCU-ATMEGA32U4-AU(TQFP44) and the footprint OPL_IC:TQFP44-0.8-9.6X9.6MM, both drawn on this page. PCBKit places them on a board for you when you design with it.

What can replace the ATMEGA32U4?

Parts like it in the library: the ATMEGA32U4-16AU 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?

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

Parts like it

1