Category:BC-04

Basic

Based on British CSR BlueCore4-Ext chip, follow V2.1 + EDR Bluetooth specification. The module supports UART, USB, SPI, PCM, SPDIF interface, and support for the SPP Bluetooth serial protocol, low cost, small size, low power consumption, send and receive sensitivity advantages, just with a few external components will be able to achieve its powerful. Feature:

Bluetooth V2.1 + EDR
Bluetooth Class 2
Built-in PCB RF antenna
Built-in 8Mbit Flash
Support for SPI programming interface
Support UART, USB, SPI, PCM interface
3.3V power supply
REACH, ROHS certification

Application: The module is mainly used for short-range wireless data transmission field. Convenient and connected to the PC, Bluetooth devices can also data exchange between the two modules. Avoid cumbersome cable connections, direct replacement for the serial line.

Bluetooth wireless data transmission;
industrial remote control, telemetry;
POS system, wireless keyboard, mouse;
traffic, underground positioning, alarm;
automated data acquisition system;
wireless data transmission; banking system;
wireless data acquisition;
building automation, security, wireless monitoring room equipment, access control systems;
smart home, industrial control;
automotive testing equipment;
television the interactive program vote Equipment;
government street light energy saving equipment
wireless LED display system
Bluetooth joystick, Bluetooth gamepad
Bluetooth printer
Bluetooth remote control toy

Mechanical Features:

Operating Frequency Band 2.4GHz -2.48GHz unlicensed ISM band
Bluetooth Specification V2.1+EDR
Output Power Class Class 2
Operating Voltage 3.3V
Host Interface USB 1.1/2.0 or UART
Audio Interface PCM interface
Flash Memory Size 8Mbit
Dimension 27mm (L) x 13 (W) mm x 2mm (H)

Electric Features:

Absolute Maximum Ratings
Rating Min Max
Storage temperature -40℃ +150℃
Supply voltage: VBAT -0.4V 5.6V
Other terminal voltages VSS-0.4V VDD+0.4V

Recommended Operating Conditions
Operating Condition Min Max
Operating temperature range -40℃ +150℃
Guaranteed RF performance range(a) -40℃ +150℃
Supply voltage: VBAT 2.2V 4.2V(b)

Power Consumption:

Operation Mode Connection Type UART Rate(kbps) Average Unit
Page scan - 115.2 0.42 mA
ACL No traffic Master 115.2 4.60 mA
ACL With file transfer Master 115.2 10.3 mA
ACL 1.28s sniff Master 38.4 0.37 mA
ACL 1.28s sniff Slave 38.4 0.42 mA
SCO HV3 30ms sniff Master 38.4 19.8 mA
SCO HV3 30ms sniff Slave 38.4 19.0 mA
Standby Host connection - 38.4 40 µA

Function Diagram, Dimension

function diagram
Board dimension

Schematic and reference design

BC04-B
BC04-B peripheral design
BC04-B peripheral full design
BC04-A

LED Status

Mode	LED Status	Module Status
Master	Even blinking, 150ms on/off	searching mode
Master	5 times fast blinking, 2 seconds off	pairing with recorded paired device
Master	Keep on	Connected
Slave	Even blinking 800ms on, 800ms off	wait for pairing
Slave	Long-time on	Connected

Slave mode LEDs
Status indicating LED: PIO(1), Use to indicating the status of the Bluetooth module, LED light flashes with the Bluetooth module state corresponding to the following table:

Mode	Header text	Header text
Slave	Even Speed rapid flashing (200ms on/off)	waiting for matching
Slave	always on	waiting for connection

Pin Definition

Pin Number	Name	Type	Decription	Programmed for BC04-B
1	UART-TX	CMOS output	UART data output	Same
2	UART-RX	CMOS input	UART data input	Same
3	UART-CTS	CMOS input	UART cancel send	-
4	UART-RTS	CMOS output	UART request send	-
5	PCM-CLK	Double way	PCM clock	-
6	PCM-OUT	CMOS output	PCM data output	-
7	PCM-IN	CMOS input	PCM data input	-
8	PCM-SYNC	double way	Sync PCM data	-
9	AIO(0)	double way	Programmable Analog I/O	-
10	AIO(1)	double way	Programmable Analog I/O	-
11	RESETB	CMOS input	Low TTL to reset	-
12	3.3V	Power Input	Power 3.3V	Same
13	GND	Power Output	GND	Same
14	NC	output	Please NC it	-
15	USB-DN	double way	USB data negative	-
16	SPI-CSB	CMOS input	SPI chip selection	-
17	SPI-MOSI	CMOS input	SPI data input	-
18	SPI-MISO	CMOS output	SPI data output	-
19	SPI-CLK	CMOS input	SPI clock	-
20	USB-DP	double way	USB data positive	-
21	GND	GND	GND	-
22	GND	GND	GND	-
23	PIO(0)	double way	Programmerable I/O (0)	-
24	LED	output	Status indicating LED	Status indicating LED Pluse output means no connection high TTL means connected
25	MCU-INT	double way	Programmerable I/O (2)	MCU interrupts port
26	Clear	double way	Programmerable I/O (3)	Memory clear key (short press) Restore Defaults button (long press 3s)
27	SW/HW	double way	Programmerable I/O (4)	Software / hardware main from settings port set low (or vacant) hardware setup master-slave mode set high 3.3V for the software to set master-slave mode
28	Master/Slave	double way	Programmerable I/O (5)	Hardware master-slave mode settings port set low (or vacant) mainly from the mode, set high 3.3V mode
29	PIO(6)	double way	Programmerable I/O (6)	-
30	PIO(7)	double way	Programmerable I/O (7)	-
31	PIO(8)	double way	Programmerable I/O (8)	-
32	PIO(9)	double way	Programmerable I/O (9)	-
33	PIO(10)	double way	Programmerable I/O (10)	-
34	PIO(11)	double way	Programmerable I/O (11)	-

Layout design points

BC04 Bluetooth module TTL level required to 3.3V, and for 5V TTL you will need 3.3-5V TTL conversion circuit.
Bluetooth signal by around a great impact, such as trees, metal, walls and other obstacles will Bluetooth signal absorption or shielding, so is not recommended being installed in a metal enclosure.
the metal will weaken the antenna, it is recommended that you should not paving and traces below the antenna in the layout design, preferably hollowed.

BC04 Breakout Board

Reference schematic

HC05
HC05
BC04
BC04 simplified schematic

Documents

The demo video of the current draw of BC04B module here.
Check here Phone and Arduino Bluetooth Communication to see how it works with arduino and cell phone.
Use UART PC software to write AT commands.

Pages in category "BC-04"

The following 2 pages are in this category, out of 2 total.

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