Dual Band 2.4/5 GHz Wi-Fi Module – RTL8720DN

Description

RTL8720DN is a module that integrates dual-band Wi-Fi (2.4 GHz and 5 GHz) and Bluetooth Low Energy 5.0 based on the RTL8720DN chip. It consists of a high-performance MCU called KM4 at 200 MHz and a low-power MCU called KM0 at 20 MHz. It features a PCB antenna, UART, GPIO, ADC, PWM, I2C, SPI, SWD. It can be used in a wide range of applications such as: wearable devices, low-power sensor networks, audio headsets, smart plugs, home automation, mesh networks, industrial wireless control, wearable electronics, etc.

Pinout

Technical specifications

• CPU and memory
  – Wireless SoC – Realtek RTK8720DN MCU with Arm Cortex-M4 KM4 core at 200 MHz and Arm Cortex-M0 KM0 core at 20 MHz
• Wi-Fi
  – 802.11 a/b/g/n WiFi 4
  – Data rates:
  802.11a: 6, 9, 12, 18, 24, 36, 48, 54 Mbps
  802.11b: 1, 2, 5.5, 11 Mbps
  802.11g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps
  802.11n: MCS0–MCS7 @ HT20/HT40 2.4 GHz and 5.8 GHz bands
• Bluetooth
  – Standard 5.0 BLE
  – Antenna – IPEX connector or PCB antenna
• Peripheral interface:
  – 1x ADC
  – 2x UART
  – 1x I²C
  – 1x SPI
  – 6x PWM

Documentation and useful links

• Datasheet RTL8720DN
• GitHub