Descripción
SPECIFICATIONS
Brand Name: Aprilbeacon
Origin: Mainland China
Model Number: 52820
Name: New April USB Dongle 52820
Place of Origin: Beijing, China (Mainland)
Feature: 64 MHz Arm Cortex-M4
Case color: black
Antenna: External
Mainchip: nRF52820
Connector: USB
April USB Dongle 52820
A small and low-cost nRF52820 USB Dongle Form Factor with external antenna
Key Features
-
64 MHz Arm Cortex-M4
256KB Flash + 32KB RAM
Button and LEDs for user interaction
Super Small Form Factor
Onboard external antenna
USB support
Hardware Description For Dongle 52820
The nRF52820 Dongle can be used as a development platform for the nRF52820 SoC. It features user configurable LEDs and a button. In addition to radio communication, the nRF52820 SoC can communicate with a computer through USB.
#Buttons And LEDs For Dongle 52820
The nRF528520 Dongle is equipped with two LEDs, two buttons (SW1 and SW2)
The LEDs and button are connected to dedicated I/Os on the nRF52820 SoC.
SW1 - Reset
SW2 - P0.31
LED1 - P0.12
LED2 - P01.09
#SWD Interface For Dongle 52820
On the front side of the nRF52820 Dongle, there are connection hole for the SWD interface.
Pinouts P1 (from square soldering hole)
GND
VCC
SWDIO
SWDCLK
#Firmware For Dongle 52820
The USB dongle nRF52820 is flashed withAB Sniffer firmware
More detail please check https://wiki.aprbrother.com/en/BleUsbDongle.html#april-usb-dongle-52820
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