HC-08 低功耗 BLE CC2540 藍芽模組 4.0 主機/從機一體化 藍牙轉串口

商品說明

HC-08 藍芽串口通信模組是新一代的基於Bluetooth Specification V4.0 BLE 藍芽協議的通訊模組。無線工作頻段為2.4GHz ISM，調製方式是GFSK。模組最大發射功率為4dBm，接收靈敏度-93dBm，空曠環境下和iphone4s 可以實現80 米超遠距離通信。模組採用郵票孔封裝方式，可貼片焊接，模組大小26.9mm×13mm×2.2mm，很方便客戶嵌入應用系統之內。

模組採用TI 的CC2540 晶片，配置256K Byte 空間，支援AT 指令，用戶可根據需要更改角色（主、從模式）以及UART串列傳輸速率、設備名稱等參數，使用靈活。

請注意 使用手機或平板等裝置，要先確認是否有支援藍芽 BLE 4.0

藍牙4.0 BLE模組，支持與iPhone4s和安卓4.3以上版本的手機連接，低功耗，傳輸距離為80米。底部帶有排針焊接口，免底板使用，快捷方便！

Wireless Bluetooth TTL Transceiver Module HC-08 CC2540 BLE CSR4.0

HC-08 firmware versions

• The default baud rate is 9600.

• There must be a delay between data packets. For example, if the baud rate is 1200 baud, the packet length is 120 bytes and the transmission time delay between packets must be not less than 2000ms otherwise you may lose data. The packet transmission time delay for 38400 baud with a packet length is 120 bytes must not be less than 200ms. At 115,200 baud with a packet length of 120 bytes, the transmission time delay between data packets must be not less than 50ms).

• When the baud rate is 19200 baud or more, the number o per packet cannot be more than 120 bytes.

• The higher the baud rate, the shorter the transmission delay time required between data packets.

• The shorter the number o per packet, the shorter the required delay time (e.g. 115,200 baud with a packet length of 20 bytes, the transmission delay time between data packets is less than 20ms).

 

HC-08 Pin Definition

TXD：串口發送，3.3V TTL電平。

RXD：串口接收，3.3V TTL電平。

CTS：串口流控，暫不支持。

RTS：串口流控，暫不支持。

DC：模擬、燒錄時鐘腳。

DD：模擬、燒錄數據腳。

RST：模組重定腳，要求不小於5ms的低電平進行復位。

VCC：模組電源腳，要求直流3.3V電源，供電電流不小於100mA。工作電壓範圍：2.0V~3.6V。

GND：模組公共地。

LED：模組指示燈輸出腳，高電平輸出，接LED時請串接電阻。

連線前，

主機未記錄從機位址時，每秒亮100ms；

主機記錄從機位址時，每秒亮900ms；

從機每2秒亮1秒。

連線後，LED常亮。

KEY：輸入腳，內部下拉。此腳接高電平，用於主機清除已記錄的從機位址。

• Pin 1: (UART TX) serial transmit, 3.3V TTL level.
• Pin 2: (UART RX) serial receive, 3.3V TTL level.
• Pin 3: (CTS) serial flow control, not supported.
• Pin 4: (RTS) serial flow control, not supported.
• Pin 11: (RST) reset pin; take LOW for not less than 5ms.
• Pin 12: (VCC) 2-3.6VDC operating voltage (typical 3.3VDC), current not less than 100mA.
• Pin 13: (VSS) common ground.
• Pin 22: (VSS) common ground.
• Pin 24: (LED) LED output pin; ON when paired/connected, PULSING when not paired/connected.
• Pin 26: (KEY): internal pulldown resistor keeps LOW for normal operation; HIGH erase pairing/connection information; after erasure, searches for new device to pair with/connect to randomly.

 

HC-08 AT commands

• AT responds OK

• AT + BAUDx responds with OKn where x is 1 – n is 1200, 2 – 2400, 3 – 4800, 4 – 9600 (default), 5 – 19200, 6 – 38400, 7 – 57600, 8 – 115200. Note: module must be reset after power-on for the new serial port baud rate to take effect.

• AT + NAMEname responds OKsetname – name is the Bluetooth device name to be set and must be 13 characters or fewer. Retained across power offs. Note: module must be reset after power-on for the new device name to take effect.