[Frequency]:2.400~2.480GHz
[Protocol]:V4.2+V3.0 SPP
[Distance]:30m
[Size]:21*13mm
[Weight]:0.8±0.1g
[Feature]:Low power consumption,Dual-mode Bluetooth module
[Introduction]:E104-BT40 module is a serial to dual-mode Bluetooth slave module based on Bluetooth 4.2 + 3.0 version, namely low power consumption Bluetooth BLE and classic Bluetooth SPP Profile, which can freely switch between BLE and Classic Bluetooth, working at 2.4GHz.
Pin No. | Definition | Direction | Function | Description |
---|---|---|---|---|
1 | GND | - | Power supply | Power supply reference |
2 | TXD | Output | Serial datatransmission | Module outputs serial data to external |
3 | RXD | Input | Serial datareception | Module receives external serial data |
4 | P02 | Output | General output IO | User can set output level |
5 | P03 | Output | General output IO IO | User can set output level① |
6 | P04 | - | - | NC |
7 | P05 | - | - | NC |
8 | P06 | - | - | NC |
9 | P07 | - | - | NC |
10 | GND | - | Power supply | Power supply reference |
11 | P10 | Input | General input IO | User can read IO level,internal pull-up |
12 | P11 | Input | General input IO | User can read IO level,internal pull-up |
13 | PWM2 | Output | Output PWM | User configures output PWM wave |
14 | PWM3 | Output | Output PWM | User configures output PWM wave② |
15 | P33 | - | CTS | - |
16 | P34 | - | RTS | - |
17 | VCC | - | 3.3V | Power supply input |
18、19 | GND | - | Power supply | Power supply reference |
20~22 | NC | - | - | - |
23 | RST | - | Reset pin | Active low level |
24 | STATUS | Output | State indicator LED | Bluetooth is not connected: output frequency is 1Hz square wave Bluetooth is connected: Low level |
25 | MODE | Input | Mode selection | Low level: configuration mode ③High level: transparent transmission mode |
26 | DISC | Input | Disconnection | Internal pull-up, valid on falling edge |
27 | LINK | Output | Connection state | Bluetooth is not connected: high level Bluetooth is connected: Low level |
28 | GND | - | Power supply | Power supply reference |