Boardoza HM-BT4531 BLE UART Bridge Breakout Board

Name: Boardoza HM-BT4531 BLE UART Bridge Breakout Board
Brand: Boardoza
SKU: B0201V10000177

Boardoza HM-BT4531 is a hardware platform built around the CMT4531 BLE 5.2 SoC, featuring a 32-bit ARM Cortex-M0 processor with a 64 MHz working frequency. This board functions as a transparent bridge between an external MCU and BLE-enabled devices through a standard UART interface.

To facilitate integration across various hardware ecosystems, the board includes integrated voltage regulation to support a wide input range and bi-directional logic level translation on all I/O pins. These functions ensure the board operates with both 3.3V and 5V systems without requiring additional signal conditioning or external power management.

Boardoza HM-BT4531 BLE UART Bridge Breakout Board – 1

1 / 2

Key Features

BLE 5.2 Protocol: Supports Bluetooth 5.2, Bluetooth Mesh, and LE 1M/2M/Coded PHY layers.
Low-Power State Retention: Consumes arround 3.7 mA in deep sleep mode while maintaining 48 KB RAM retention.
Configurable UART: Supports a baud rate range from 9600 bps to 500,000 bps with a 3 KB buffer.
Memory Resources: Includes 256 KB of Flash and 48 KB of RAM for data handling and custom firmware.
Signal Strength: Maximum transmit power of +6 dBm and a receiving sensitivity of −94 dBm @ 1Mbps.

Technical Specifications

Input Voltage (VCC): 3.3V to 5.5V DC
RX Current Consumption: \~5.7 mA (@1Mbps GFSK) @ 3.3Vdc Supply Voltage
TX Current Consumption: \~5.9 mA (@0dBm) @ 3.3Vdc Supply Voltage
Deep Sleep Current: \~3.7 mA @ 3.3Vdc Supply Voltage
Operating Temperature: −20 °C to +85 °C
Board Dimensions: 20x40mm

Support

For technical questions, documentation and issue reports, use the GitHub repository or write to us directly.

[email protected]