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tinyK20, perfect for wearable computing

By on November 30, 2015
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This project is about to build a small and tiny (48mm x 19mm) development board based on a Freescale Kinetis K20 device (ARM Cortex-M4 running at 50 MHz). The microcontroller pins are on the outside to use the board with a breadboard. The board includes the option for an micro SD card, 32 kHz clock and a 3.3V DC-DC converter. The ARM Cortex can be debugged with standard development tools (Eclipse, GNU, SWD).

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Main Features

  • Freescale Kinetis K20DX128 Microcontroller (K20DX128VFT5)
  • ARM Cortex-M4, 50 MHz, 128 KByte FLASH, 16 kByte RAM
  • USB, ADC, DMA, FTM, I2S, I2C, PIT, GPIO, UART, TSIO, CMP, DAC
  • Internal 5V to 3.3V DC converter (120 mA)
  • Optional Micro SD card
  • Optional 32 kHz RTC clock
  • Optional 3.3V DC-DC converter
  • Compatible to OpenSDA circuit on Freescale FRDM boards
  • Microcontroller pins breadboard friendly on the outside
  • Standard ARM SWD (Single Wire Debug) for flashing and debugging
  • Detachable debugging circuit: board can debug external boards

Applications

  • Data logger
  • Wearables
  • Robotics
  • Debugger (OpenSDA, OpenOCD, pyOCD, CMSIS-DAP)

Example projects available for Eclipse (GNU ARM Eclipse with GNU lauchpad)/Kinetis design Studio.

Source: tinyK20, small uC board and debugger

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