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ATMEGA16U4-MU

Microchip TechnologyExtended

-40℃~+85℃ 10bit 16KB 16MHz 2.7V~5.5V 26 512Byte 8 Bit AVR Built-in FLASH VQFN-44(7x7) Microcontrollers (MCU/MPU/SOC) ROHS

DatasheetJLCPCBLCSC
Part id
microchip/ATMEGA16U4-MU
Category
Microcontrollers (MCU, MPU, SOC)
Package
VQFN-44(7x7)
Pins
45
In stock
0 at JLCPCB (C1338046)
Used on
4 open-source boards

Overview

The ATMEGA16U4-MU is a microcontroller made by Microchip Technology in a VQFN-44(7x7) package with 45 pins. -40℃~+85℃ 10bit 16KB 16MHz 2.7V~5.5V 26 512Byte 8 Bit AVR Built-in FLASH VQFN-44(7x7) Microcontrollers (MCU/MPU/SOC) ROHS.

PCBKit's library has its KiCad symbol (MCU_Microchip_ATmega:ATmega16U4-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. JLCPCB lists it (part C1338046). 4 open-source boards in 3 repositories on GitHub use it.

Symbol

1PE62UVCC3D-4D+5UGND6UCAP7VBUS8PB09PB110PB211PB312PB713RESET14VCC15GND16XTAL217XTAL118PD019PD120PD221PD322PD524AVCC25PD426PD627PD728PB429PB530PB631PC632PC733HWB/PE236PF737PF638PF539PF440PF141PF042AREF
MCU_Microchip_ATmega:ATmega16U4-MFrom KiCad's library

Footprint

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

Pinout

45
The pins of the ATMEGA16U4-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

4
  • 2 layers65 × 30.2 mmRadxaFPGAdx, the printed circuit board in 3D

    RadxaFPGAdx

    opilitethesmartdev/opi-radxaFPGAdx-v0

    HAT for the Radxa Zero 3(E) featuring an FPGA

    13 parts
  • 2 layers41 × 16 mmGlyph isp, the printed circuit board in 3D

    Glyph isp

    MalphasWats/Glyph

    Handheld gaming device based on ATMega1284P

    18 parts4
  • 2 layers32 × 35 mmATCE, the printed circuit board in 3D

    ATCE

    LeaGuyon/M1

    25 parts

Parts like it

8

Questions

Is there a KiCad symbol and footprint for the ATMEGA16U4-MU?

Yes. The symbol is MCU_Microchip_ATmega:ATmega16U4-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 ATMEGA16U4-MU?

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

Where is the ATMEGA16U4-MU datasheet?

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

Where can I order the ATMEGA16U4-MU?

JLCPCB lists it as part C1338046, with 0 in stock; the sellers' links on this page open their listings.

What can replace the ATMEGA16U4-MU?

Parts like it in the library: the ATMEGA32U4-MU by Microchip Technology, the ATMEGA32A-MU by Microchip Technology, the ATMEGA324A-MU by Microchip Technology and the ATMEGA324PA-MU by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the ATMEGA16U4-MU?

4 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.