The SPP-C Bluetooth module is a wireless data transmission solution, specifically designed for applications that require Bluetooth communication. Operating on the V2.1+EDR Bluetooth version, this module supports the Serial Port Profile (SPP) Bluetooth protocol and features UART interface capabilities. With its low cost, small form factor, high transmit/receive sensitivity, low power consumption, and minimal external component requirements, the SPP-C module offers a compelling solution for various wireless communication applications.

 

Specifications:

• Bluetooth Chip: BK3231
• Communication Protocol: Bluetooth Specification v2.1+EDR
• Radius: Up to 10 meters (power level 2)
• Integrated PCB Antenna
• Compatibility: Compatible with all Bluetooth adapters that support SPP
• Radiofrequency: 2.40 - 2.48 GHz
• Host Interface: UART
• Power Consumption During Data Transfer: 40 mA
• Operation Voltage: 2.8 V to 3.6 V
• Sensitivity: -88dBm for 1 Mbps mode and 2 dBm transmit power
• HID Support: HID v1.0
• Crystal Reference Clock: 16 MHz
• Package: 56-pin QFN 7mmx7mm package for keyboard

Module Configuration:

• UART Speed: 9600 baud (8 data bits, no parity, stop bit (8N1))
• Factory Password: 1234
• Operation Mode: Only works in Slave mode
• Power Supply: 3.3 V (Level converter required when used with a 5V data line)

Pinout:

• TX, RX: UART Interface
• NC: Reserved
• P00… P45: Programmable Input/Output Port
• RESET: Reset Line
• 3.3 V: Power Supply
• GND: Ground

AT Commands:

• AT commands should be accompanied by CRNL characters (carriage return and line feed).
• The module transitions to the AT command mode immediately after power-up, switching to data transmission mode after connecting to a Bluetooth device.

 

Pinout:

 

Package Includes:

1 x BK3231 SPP-C Bluetooth module