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BLE2U
BLE/UART/USB Transceiver Module BLE2U
1. Overview
The BLE/UART/USB transceiver module (BLE2U) is developed based on CH9143 to implement data
transmission between BLE, USB interface and UART. The BLE supports master mode, slave mode and
master-slave mode. BLE communication and parameters can be configured in slave mode and master-slave
mode, and BLE4.2 is supported. The UART supports AT command configuration and MODEM signals. The
baud rate can be up to 1Mbps. It can implement online debug or data monitor between computer USB
interface, serial port and Bluetooth at the same time.
USB and BLE virtual serial port technology. A virtual serial port driver is provided on the computer,
shielding the underlying technical details of BLE and USB, with no secondary development required. It is
compatible with common serial port applications and serial debug tools, easy to implement transmission
between 3 "serial ports".
BLE2U product selection:
Part No.
BLE2U-A-ANT
BLE2U-C-ANT
Some application block diagrams of CH9143:
Figure 1 Block diagram of serial communication between CH9143 USB and BLE slave or UART device
1
Manual
Version: 1C
http://wch.cn
Apperance
BLE2U-A
BLE2U-C
Features
Onboard antenna
Small size
Built-in 32M crystal.
Onboard antenna
All functional pins
Built-in 32M and 32K crystals.
http://wch.cn
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Summary of Contents for WCH BLE2U
- Page 1 1. Overview The BLE/UART/USB transceiver module (BLE2U) is developed based on CH9143 to implement data transmission between BLE, USB interface and UART. The BLE supports master mode, slave mode and master-slave mode. BLE communication and parameters can be configured in slave mode and master-slave mode, and BLE4.2 is supported.
- Page 2 BLE2U http://wch.cn Figure 2 Block diagram of serial communication between BLE host and USB host or UART device through CH9143 Figure 3 Block diagram of serial communication between USB hosts through CH9143 in BLE master-slave mode 2. Features ● Data transmission between BLE, USB, and UART.
- Page 3 BLE2U http://wch.cn 3. Package size and pins of BLE2U-A Pin No. Pin Name Pin Type Description BLE mode selection, with built-in pull-up resistor BLE_MODE Low level: Slave mode. High level: Master-slave mode. Power input Ground Module status and data receive/transmit indication...
- Page 4 BLE2U http://wch.cn 5. Package size and pins of BLE2U-C Pin No. Pin Name Pin Type Description Ground PANT Optional pin to connect antenna externally (Note 2) Internal DC-DC power enable, with built-in pull-up resistor SWREG_EN Enabled when at low level...
- Page 5 Note (2): To use an external antenna, the user can connect the PANT pin to the antenna pin through the reserved resistor pad. Re-solder the resistor which connects the antenna pin to on-board antenna, to connect the antenna pin to the PANT pin. 6. Recommended bonding pad size for BLE2U-C Symbol Value Unit 18.02...
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Page 6: Functional Description
BLE2U http://wch.cn The figure below shows the reference layout of the module. The first three cases are correct, as long as the ground plane does not exceed the ground plane edge of the module. The last three cases are incorrect. The... -
Page 7: Led Function
BLE2U http://wch.cn recommended to use CTS/RTS flow control to prevent buffer overflow when the baud rate exceeds 9600bit/s and the BLE average RSSI is less than -70dBm. The USB interface is a USB2.0 full-speed device, which communicates with PC through analog serial port device, and is compatible with common serial software. - Page 8 BLE2U http://wch.cn 10. Reflow soldering conditions Moisture Sensitivity Level MSL3 Average slope rise rate (TL to TP) Max 3℃/s During warm up Minimum temperature (Tsmin) 150℃ Maximum temperature (Tsmax) 200℃ Time (minimum – maximum) (ts) 60-180s Tsmax – TL slope rise rate Max 3℃/s...