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Pro Micro - 5V/16MHz (Open hardware) copy

1 month ago 12
  • Description
  • Documents
  • BOM
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Description

Description: Here at SparkFun, we refuse to leave ‘good enough’ alone. That’s why we’re adding to our line-up of Arduino-compatible microcontrollers once more! The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on-board and do away with bulky external USB interface.

This tiny little board does all of the neat-o Arduino tricks that you’re familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 16MHz and 5V, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere. There is a voltage regulator on board so it can accept voltage up to 12VDC. If you’re supplying unregulated power to the board, be sure to connect to the “RAW” pin on not VCC.

This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled. We’ve also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit.

Dimensions: 1.3x0.7"

Features:

ATmega32U4 running at 5V/16MHz Supported under Arduino IDE v1.0.1 On-Board micro-USB connector for programming 4 x 10-bit ADC pins 12 x Digital I/Os (5 are PWM capable) Rx and Tx Hardware Serial Connections

GitHub (Design Files) Sparkfun link:https://www.sparkfun.com/products/12640

Documents

SparkFun_Pro_Micro_v13a SCH copy

SparkFun_Pro_Micro_v13a PCB copy

BOM

ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted
1 1uF C10,C5,C6 0603-CAP 3
2 10uF C13,C19 EIA3216 2
3 1K R11 0603-RES 1
4 Red LED1 LED-0603 1
5 10K R2 0603-RES 1
6 0.1uF C3,C1 0603-CAP 2
7 330 R6,R4 0603-RES 2
8 Green D3 LED-0603 1
9 LOGO-SFE U$11 SFE-NEW-WEBLOGO 1
10 MIC5219 U2 SOT23-5 1
11 M12 JP6,JP7 1X12 2
12 LOGO-SFE U$1 SFE-LOGO-FLAME 1
13 OSHW-LOGO U$3 OSHW-LOGO-S 1
14 ATMEGA32U4 U3 QFN-44-NOPAD_1:1-OUTFAKES 1
15 16MHz Y1 CRYSTAL-SMD-5X3 1
16 22pF C2,C4 0603-CAP 2
17 Yellow D1 LED-0603 1
18 22 R5,R7 0603-RES 2
19 USB-AB X1 USB-AB-MICRO-SMD-V03-INOUT 1
20 FIDUCIAL JP1,JP2 MICRO-FIDUCIAL 2
21 500mA F1 PTC-1206 1
22 DIODE D2 SOD-323 1
23 Closed for 5V Board SJ1 SJ_2S 1
24 FRAME-LETTER FRAME1 CREATIVE_COMMONS 1

Attachments

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