Description

DF Robot Bluetooth 5 Module

The DF Robot Bluetooth 5 Module, a versatile Bluetooth unit enabling Bluetooth/U-disk/TF-card playback and call functions. With dual-mode Bluetooth, it facilitates simultaneous audio playback and data transmission, simplifying embedded Bluetooth development in diverse products. Supporting various audio formats, a 128GB U-disk, TF card, BLE, and SPP pass-through, it ensures seamless audio transmission and control.

Quick Spec

Power Supply: 3.3 ~ 5V
Operating Current: 20mA
Communication: UART
Bluetooth: 5.0
Operating Temperature: -40 ~ +80℃
Operating Humidity: 5%RH~95%RH
Dimensions: 23 x 15.5mm

Pinout

No.	Define	IO function	Description
1	PA3	AUX1L	External Audio input channel--left channel
2	PA4	AUX1R	External Audio input Channel--right channel
3	PA5	ADKEY	ADkey, pull-up resistor of 22k, left floating when not in use
4	USBDM	USBD
5	USBDP	USBD+
6	3V3	Power Output	LDO output of the internal chip. The external load shall not exceed 80mA. Try not to use it.
7	DVDD	POWER	Bias voltage of the chip DAC, connect a 105 resistor
8	PA0	MIC	MIC IO for calling
9	DACR	Right Channel Output
10	DACL	Left Channel Output
11	SGND	Analog Ground	Connect to the ground of power supply separately, do not mix with digital ground, single point grounding is best
12	GND	Digital Ground
13	VCC	Power Input	3.3V -5V - suitable for 3.7 lithium battery power supply
14	PC1	GPIO / PWM1
15	PC3	SDDAT	Connect to data pin of external TF card
16	PC4	SDCMD	Connect to command pin of external TF card
17	PC5	SDCLK	Connect to clock pin of external TF card
18	PR2	GPIO/RESET	Can work as normal IO or reset pin, floated at present
19	PR1	LED	Connect to external LED, high level to turn it on
20	PB6	GPIO	Common GPIO
21	PB5	GPIO	Common GPIO
22	PB4	GPIO	Common GPIO
23	PB3	GPIO /MUTE	Mute pin. Auto-detect when the module powered on, and output the corresponding level. Detecting method: pull up 10K, high level to mute; pull down 10K, low level to mute.
24	PB2	GPIO	Common GPIO
25	PB1/RX	UART-RX0	Connect to the TX of MCU, 3.3V level, please connect 1K resistor in series for 5V
26	PB0/TX	UART-TX0	Connect to the RX of MCU, 3.3V level, compatible with 5V level