User Manual
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HLK-B35
1. Product Introduction
1.1. Brief introduction
HLK-B35 is a low-cost embedded UART-WIFI (serial-wireless network) module launched by
Hi-link Electronics. It is a Wi-Fi + BLE combined chipset for low-power and high-performance
application development.
This product is based on an embedded module that conforms to network standards through a
serial interface, with an embedded TCP/IP protocol stack, which can realize the conversion between
the user's serial port and the wireless network (WIFI/BLE).
With the HLK-B35 module, the traditional serial device can transmit its own data through the
Internet without changing any configuration, providing a complete and fast solution for the user's
serial device to transmit data through the network.
1.2. Product Features
Wireless subsystem includes 2.4G radio, Wi-Fi802.11b/g/n and BLE5.0 baseband/MAC design
Microcontroller includes 32-bit RISC CPU with FPU (floating point unit), cache and memory power
management unit to control low power consumption mode
DFS (Dynamic Frequency Scaling) main frequency support from 1MHz to 192MHz
Support XIP QSPI Flash hardware encryption
Built-in 276KB RAM, 128KB ROM, 1KB eFus, 2M embedded Flash memory
Working voltage supports 2.1-3.63V, typical value is 3.3V
BLE assists in realizing Wi-Fi fast network configuration
Support AP/STA and BLE coexistence mode, among which WiFi security support:
WPS/WEP/WPA/WPA2 Personal/WPA2 Enterprise/WPA3
Integrated balun, PA/LNA
Abundant peripheral interfaces, 1*SPI master/slave, 2*UART,
