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Add readme for mdk dongle

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KemoNine 2020-12-31 01:49:31 +00:00
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keyboards/zmk-config/config/boards/arm/nrf52840_mdk_dongle/README.md Normal file
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# nRF52840 MDK USB Dongle
A basic USB stick that contains the nRF52840 chip from Nordic and has 12 GPIOs available.
Additional detail: https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/
## Hardware Features
* Nordic nRF52840 System-on-Chip
* ARM® Cortex®-M4F processor optimized for ultra-low power operation
* Combining Bluetooth 5, Bluetooth Mesh, Thread, IEEE 802.15.4, ANT and 2.4GHz proprietary
* On-chip NFC-A tag
* On-chip USB 2.0 (Full speed) controller
* ARM TrustZone® Cryptocell 310 security subsystem
* 1 MB FLASH and 256 kB RAM
* Up to 12 GPIOs available via headers
* User programmable Button and RGB LED
* On-board 2.4G chip antenna
* 3.3V regulator with 1A peak current output
* VBUS & VIN Power-Path Management
* Convenient USB dongle form factor
* Breadboard-friendly with dual 10-Pin headers
* Measures 1.65" x 0.7" x 0.16" (42mm x 18mm x 4mm) without headers soldered in