'EFM8UB1 Breakout' - DIP scale USB-MCU board

This breakout board converts Silicon Labs' EFM8UB1(Universal Bee series) to DIP scale.
You can use the USB Type-C cable directly connected.

• 300mil width DIP16 pin shape (substrate size 27.0 mm × 7.6 mm)
• EFM8UB10F16G-C (16kBytes flash, 2304Bytes RAM, Internal OSC)
• Development environment can be used free of charge
• PCB-Edge Type-C connector
• USB-CDC bootloader
• USB bus-power supply
• One user LED
• Universal PCB mount available for single-sided parts mounting
• Side-end face through terminal

Largesize - efm8ub1_breakout_pinout_rev0.9.pdf

Please see the pdf below.
AN945: EFM8 Factory Bootloader User's Guide

1. Entry to CDC bootloader
Reset (/RESET pin low) or turn on the power with the /BOOT pin set to 'L', then enter the bootloader.
When connected with USB, it is recognized as HID device.

2. Convert to bootcode
Convert .hex files that can be built by Simplicity IDE into .efm8 file as follows.


＞ hex2boot foo.hex -o foo.efm8

3. Writing to EFM8
Write the .efm8 file to the MCU with efm8load.exe.


＞ efm8load foo.efm8

If there is no error, it is executed after the program is written.
After that, when the /BOOT(C2D) pin is open or 'H' level at reset, the user program is preferentially executed.

EFM8UB1 Breakout schematic (PDF)
efm8ub1_breakout_schem_rev0.9.pdf

EFM8UB1 USB-CDC downloader (Silicon Labs' site)
AN945SW.zip

Simplicity Studio download (Silicon Labs' site)
Simplicity Studio 4

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