WK882H is a Wi-Fi + BLE dual-mode SMD module independently developed by Weikeng Technology. The module is available in multiple package sizes to match the dimensions of commonly used Wi-Fi modules on the market, achieving full Pin-to-Pin compatibility for easy hardware replacement and migration.

The module is based on the LN882H SoC, featuring an ARM® Cortex®-M4F core with clock frequencies of 40 MHz, 80 MHz, and 160 MHz. It supports RTOS operation and various low-power modes, making it suitable for a wide range of IoT applications.

Wi-Fi Features:

The Wi-Fi function supports the standard 2.4 GHz IEEE 802.11 b/g/n protocol with a 20 MHz bandwidth. It supports STA, AP, and STA+AP operating modes, includes a complete TCP/IP protocol stack, and supports AT command operation.

BLE Features:

The BLE function supports the standard Bluetooth Low Energy (BLE) 5.1 protocol. It supports both Long Range transmission (125 Kbps, 500 Kbps) and High-Speed transmission (2 Mbps).

The block diagram of the chipset is shown below.

Features

● Wifi Features

o 2.4GHz 802.11 b/g/n, 20MHz bandwidth

o Support STA/AP/STA+AP operation modes

o SoC with on chip TCP/IP protocol stack

●  BLE Features

o Bluetooth LE 5.1

o Support long range (125Kbps, 500Kbps) and high data rate (2Mbps)

● High Integration

o Integrated ARM© Cortex - M4F

o Integrated TR switch, balun, LNA, power amplifier and matching network

o AES-128\AES-192\AES-256 hardware encryption

o True random number generator

o 256 bits EFUSE

o CHKSUM accelerator to enhance TCP/UDP transfer

● Interface

o Single supply voltage with wide range supported (2.6~3.6V)

o SPI/I2S/I2C/SDIO/UART interface

o Timer/Advance Timer(PWM)

o Multi-channel ADC with programmed amplifier for voice sense

o X IP from external QSPI FLASH with high-speed cache

● Other general peripherals

o RTC

o WDT

o DMA controler

o high speed GPIOA/GPIOB

o RGB LED Protocol(Compatible with the WS2811)

●  Low Power mode

o 80uA in deep sleep mode

o 10uA in retention mode

o 1uA in power down mode (en_chip =0)

●  MCU

o 40/80/160M clock for Cortex-M4F

o 296KB RAM / 128kB ROM

o Up to 16MB Flash for XIP application code

                 o SWD debug interface

General Specifications