2 layers47.8 × 61.3 mm
2 layers21 × 50 mm
Atmega32u4 dev board
Coolbots7/development-boards1Collection of PCBs for testing core designs.
- Size
- 21 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 49
- Pads
- 177
- Tracks, vias
- 483, 39
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 28 Dec 2020
- Updated
- 12 Jan 2021
Overview
Atmega32u4 dev board is an open-source printed circuit board by Coolbots7, from the Coolbots7/development-boards repository on GitHub. It is a 2-layer board of 21 × 50 mm with 39 parts on 49 nets, routed with 483 tracks and 39 vias.
It is built around the ATMEGA32U4-AU, MIC5219-5.0YM5-TR and DX07S016JA1R1500. Its parts include 10 resistors, 8 capacitors, 7 diodes, 3 connectors and 2 ICs. It belongs with the microcontroller boards boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATMEGA32U4-AU
QFP-44(10x10)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH QFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MIC5219-5.0YM5-TR
SOT-23-5-40℃~+125℃@(Tj) 1 12V 3uA 500mA 5V 600mV@(500mA) 75dB@(120Hz) Fixed Over Current Protection、Thermal shutdown、Enable control、Reverse polarity voltage protection、Noise bypass terminal Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
DX07S016JA1R1500
SMD-40℃~+85℃ 1 250mA、1.25A 48V Black Female Type-C USB 2.0 SMD USB Connectors ROHSJAE ElectronicsUSB Connectors
README
README.mdDevelopment Boards
PCBs made to test core designs and / or help with rapid prototyping.
Boards
ATMega32u4 Development Board (Arduino Micro Equivalent)
Breadboard breakout PCB for an ATMega32u4 8-bit AVR microcontroller.
Features:
- USB-C connector for programming and power up to 250mA.
- 5V 500mA linear regulator for external power up to 12VDC.
- Power, TX, RX, and D13 LEDs.
- Pins are labeled on both the top and bottom of the board for easy reference.
- Note: The pinout is not the same as an actual Arduino Micro
Bill of Materials:
Future Ideas:
- Ability to construct 3.3V and 5V versions using the same PCB
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 1uF | Capacitor_SMD:C_0603_1608Metric | C3, C4, C6, C7, C8 |
| 3 | 200ohm | Resistor_SMD:R_0603_1608Metric | R5, R10, R11 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R4 |
| 2 | 22 | Resistor_SMD:R_0603_1608Metric | R2, R3 |
| 2 | 22pF | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 3.6v | Diode_SMD:D_0402_1005Metric | D3, D4 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R7, R8 |
| 2 | Conn_01x14 | Connector_PinHeader_2.54mm:PinHeader_1x14_P2.54mm_Vertical | J3, J4 |
| 1 | 100ohm | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 22uF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 250mA | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | ATmega32U4-AU | Package_DFN_QFN:QFN-44-1EP_7x7mm_P0.5mm_EP5.2x5.2mm | U1 |
| 1 | Crystal_GND24_Small | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | D13 | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | DX07S016JA1R1500 | DX07S016JA1R1500:JAE_DX07S016JA1R1500 | J6 |
| 1 | D_Small | Diode_SMD:D_0603_1608Metric | D7 |
| 1 | GND | TestPoint:TestPoint_Pad_1.5x1.5mm | TP1 |
| 1 | LOGO | touch-mark:touch_mark | G*** |
| 1 | MIC5219-5.0YM5 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | PWR | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | REPO | development-boards:repo_qr_code | G*** |
| 1 | RESET | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1 |
| 1 | RX | LED_SMD:LED_0603_1608Metric | D6 |
| 1 | TX | LED_SMD:LED_0603_1608Metric | D5 |
| 1 | VBUS | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | VCC | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | VIN | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
Questions
How big is the Atmega32u4 dev board PCB?
It measures 21 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Atmega32u4 dev board use?
39 parts, built around the ATMEGA32U4-AU, MIC5219-5.0YM5-TR and DX07S016JA1R1500. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Atmega32u4 dev board KiCad files?
From the Coolbots7/development-boards repository on GitHub, at the commit this page was made from: the board is atmega32u4_dev_board/pcb/atmega32u4_dev_board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Atmega32u4 dev board design in my own project?
Its repository states no licence, so its author keeps all rights: ask Coolbots7 before reusing the design.
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