HLK B20 Bluetooth Module

 

HLK-B20 is an new low-consumption Bluetooth BLE 4.2 control module made by Hi-Link. This product is a Bluetooth-compliant module based on universal serial interface. It has built-in BLE 4.2 protocol stack, which can realize data conversion between user serial port and Bluetooth interface.

 

HLK-B20 is an new low-consumption Bluetooth BLE 4.2 control module made by HiLink.This product is a Bluetooth-compliant module based on universal serial interface. It has built-in BLE 4.2 protocol stack, whichcan realize data conversion between user serial port and Bluetooth interface.he BLE Bluetooth device transmits the data to the HLK-B20 module via Bluetooth and the HLK-B20 module send the received data from serial portport. When the serial port gets data, the HLK-B20 send the serial port data from the Bluetooth terminal to realize the conversion of serial data and Bluetooth data.

 When the HLK-B20 has a Bluetooth device connected, the HLK-B20 will turn off the broadcast of Bluetooth name, and other Bluetooth devices will no longer be able to connect to the HLK-B20 .The module defines the working state of the serial port has two modes: Transparent transmission mode and AT command mode. After normal power on, the module directly enters the transparent mode. If Bluetooth is not connected, the data will not be send out from Bluetooth. If Bluetooth is connected, the data will be send out from the Bluetooth. In any state, keeping the ES0 pin low for longer than Tes and less than Trst will immediately enters into AT command mode.Its features includes High-speed ARM9E core MCU.2.4G/1T1R, BLE 4.2,160k programming space, 20KB RAM,Power supply voltage 0.9-3.6v,Ultra low supply voltage, low power consumption,Built-in crystal, high stability,Small chip package 4x4,Rich peripheral interface, SPI, I2C, ADC, UART, PWM, GPIO and Widely used in the Internet of Things. It is incorporated with High-speed 10-bit multi-channel ADC with internal filtering Easy to connect, fast speed.