E73-2G4M04S1FX Ebyte FCC/CE/RoHs Small size patch Bluetooth Nordic BLE 5.1 nRF52811 Bluetooth Module
[IC]：nRF52811
[Frequency]：2.379~2.496GHz
[Protocol]：BLE 5.1/IEEE 802.15.4-2006
[Distance]：120m
[Size]：17.5*23.5mmm
[Introduction]：E73-2G4M04S1FX is a small volume chip Bluetooth wireless module independently developed based on nrf52811 chip of Nordic of Norway. It adopts 32mhz industrial crystal oscillator to ensure its industrial characteristics and stable performance.
| Pin No. | Pin Item | Pin Direction | Pin Application |
|---|---|---|---|
| 0 | GND | Input | Ground, connected to reference ground of power |
| 1 | GND | Input | Ground, connected to reference ground of power |
| 2 | GND | Input | Ground, connected to reference ground of power |
| 3 | DEC2 | - | 1.3 V digital power decoupling regulator (see chip manual for details) |
| 4 | DEC3 | - | Power supply decoupling (see chip manual for details) |
| 5 | P0.25 | Input/Output | MCU GPIO |
| 6 | P0.26 | Input/Output | MCU GPIO |
| 7 | P0.27 | Input/Output | MCU GPIO |
| 8 | P0.28 | Input/Output | MCU GPIO |
| 9 | P0.29 | Input/Output | MCU GPIO |
| 10 | P0.30 | Input/Output | MCU GPIO |
| 11 | P0.31 | Input/Output | MCU GPIO |
| 12 | DEC4 | - | 1.3 V digital power decoupling regulator (see chip manual for details)Input from DC/DC regulator, output from 1.3 V LDO |
| 13 | DCC | - | DC / DC regulator output (see chip manual for details) |
| 14 | DEC1 | - | 0.9 V digital power decoupling regulator (see chip manual for details) |
| 15 | GND | Input | Ground, connected to reference ground of power |
| 16 | VCC | Input | Power supply 1.8 ~ 3.6V DC（Note: The voltage higher 3.6V is forbidden） |
| 17 | P0.02 | Input/Output | MCU GPIO |
| 18 | P0.03 | Input/Output | MCU GPIO |
| 19 | P0.04 | Input/Output | MCU GPIO |
| 20 | P0.05 | Input/Output | MCU GPIO |
| 21 | P0.06 | Input/Output | MCU GPIO |
| 22 | P0.07 | Input/Output | MCU GPIO |
| 23 | P0.08 | Input/Output | MCU GPIO |
| 24 | P0.09 | Input/Output | MCU GPIO |
| 25 | P0.10 | Input/Output | MCU GPIO |
| 26 | P0.11 | Input/Output | MCU GPIO |
| 27 | P0.12 | Input/Output | MCU GPIO |
| 28 | P0.13 | Input/Output | MCU GPIO |
| 29 | P0.14 | Input/Output | MCU GPIO |
| 30 | P0.15 | Input/Output | MCU GPIO |
| 31 | P0.16 | Input/Output | MCU GPIO |
| 32 | P0.17 | Input/Output | MCU GPIO |
| 33 | P0.18 | Input/Output | MCU GPIO |
| 34 | P0.19 | Input/Output | MCU GPIO |
| 35 | P0.20 | Input/Output | MCU GPIO |
| 36 | P0.21 | Input/Output/RST | MCU GPIO |
| 37 | SWDCLK | Input | Serial Line Debugging / Clock Input Debugging and Programming |
| 38 | SWDIO | Input | Serial Line Debugging / Clock Input Debugging and Programming |
| 39 | P0.22 | Input/Output | MCU GPIO |
| 40 | P0.23 | Input/Output | MCU GPIO |
| 41 | P0.24 | Input/Output | MCU GPIO |
| 42 | GND | Input | Ground, connected to reference ground of power |
| 43 | GND | Input | Ground, connected to reference ground of power |