MICROMU BTM8635 Bluetooth audio module
Specifications:
1.Bluetooth Version: v4.1
2.Using CSR8635 chip
3.Support A2DP, AVRCP, HFP, AAC, etc
4.Using 128K EPPROM memory chip
REMARK:
1. The module is tested before delivery and will not be returned after tinning!
2.The audio of MICROMU Bluetooth module is differential output. It is necessary to increase the operational amplifier or earphone circuit to single output (left channel, right channel, audio common terminal).
3.Provide module application data (Bluetooth module specification and Bluetooth module reference schematic）
4.Please refer to the module specification for the operation instructions of the default program.
Software Description:
Bluetooth Name: BT speaker
Note: key high level is valid (MFB high level is 3.3V, PIO high level is 1.8V) Tip: This is the PIO port, not the actual pin pin. You need to check the specification to see the actual pin!
Key description is as follows:
MFB: high level power on, low level power off (when the module is powered on, pin30 needs low level, power on and power on needs delay circuit, can't pull up directly, power on and power on automatically enters pairing mode)
PIO6: power amplifier control enable pin (output high level 1.8V when there is audio output)
PIO8: short press play / pause / answer / end, long press 1 second to reject the call
PIO1: short press the previous song, long press the volume reduction
PIO0: short press one song, long press volume plus
Special function description:
PIO8: press for 3 seconds to enter the pairing mode, and press for 6 seconds to clear the pairing list
