E104-2G4U04A Ebyte CC2540 bluetooth wireless module BLE 4.0 USB bluetooth adapter receiver
[IC]：CC2540
[Frequency]：2.402~2.480GHz
[Protocol]：BLE 4.0
[Distance]：60m
[Interface]：USB
[Introduction]：E104-2G4U04A is a small Bluetooth wireless module designed and manufactured by Chengdu Ebyte, USB type (pin spacing 1.27mm). This module has a high-performance PCB on-board antenna, using low power consumption Bluetooth (BLE) SOC solution.
| Pin No. | Item | Direction | Description |
|---|---|---|---|
| 1 | P1.4 | Input/Output | General purpose IO port(see CC2540 datasheet for details) |
| 2 | P1.5 | Input/Output | General purpose IO port(see CC2540 datasheet for details) |
| 3 | P1.6 | Input/Output | General purpose IO port(see CC2540 datasheet for details) |
| 4 | P1.7 | Input/Output | General purpose IO port(see CC2540 datasheet for details) |
| 5 | VCC | Power supply | 2.0V-3.6V (please avoid power supply with USB) |
| 6 | DD | Input/Output | Program download port P2_1(see CC2540 chip datasheet for details) |
| 7 | DC | Input/Output | Program download port P2_2(see CC2540 chip datasheet for details) |
| 8 | RESET | Input | Reset (there is a reset circuit inside the product) |
| 9 | GND | Power supply | Ground |
| 10 | P0.2 | Input/Output | General purpose IO port(see CC2540 datasheet for details) |
| 11 | P0.3 | Input/Output | General purpose IO port(see CC2540 datasheet for details) |
| 12 | P0.4 | Input/Output | General purpose IO port(see CC2540 datasheet for details) |
| 13 | P0.5 | Input/Output | General purpose IO port(see CC2540 datasheet for details) |
| 14 | P0.6 | Input/Output | General purpose IO port(see CC2540 datasheet for details) |
| 15 | P0.7 | Input/Output | General purpose IO port(see CC2540 datasheet for details) |
| 16 | LED | Signal indication | Connect to P1.1 of CC2540,high level will drive to light up |
| 17 | LED | Signal indication | Connect to P0.0 of CC2540, lowlevel will drive to light up |
| 18 | Button | Button | Connect to P1.3 of CC2540, low level active |
| 19 | Button | Button | Connect to P1.2 of CC2540, low level active |