E73-2G4M08S1CX nRF52840 Wireless Bluetooth Module BLE4.2 BEL5.0 Rf Receiver 2.4GHz BLE Beacon Module For IoT Home Automation
[IC]：nRF52840
[Frequency]：2.360~2.500GHz
[Protocol]：BLE 4.2/5.0
[Distance]：120m
[Size]：13.0*18.0mm
[Introduction]：E73-2G4M08S1CX is wireless Bluetooth module designed by Chengdu Ebyte which feature small size, low power consumption. It adopt the originally imported RFIC nRF52840 of NORDIC, supporting BLE 4.2 and BLE 5.0.
| Pin No. | Item | Corresponding,ch ip pin item | Direction | Description |
| 1 | P1.11 | P1.11 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 2 | P1.10 | P1.10 | Common I/O | Low frequency 10, standard drive |
| 3 | P0.03 | P0.03/AIN1 | Common I/O | Analog input 1, low frequency I/O, standard drive. |
| 4 | AI4 | P0.28/AIN4 | Common I/O | Analog input 4 |
| 5 | GND | - | - | Single ground line , connect to the power reference ground. |
| 6 | P1.13 | P1.13 | Common I/O | Low frequency 10, standard drive |
| 7 | AI0 | P0.02/AIN0 | Common I/O | Analog input 0, low frequency I/O, standard drive. |
| 8 | AI5 | P0.29/AIN5 | Common I/O | Analog input 5, low frequency I/O, standard drive. |
| 9 | AI7 | P0.31/AIN7 | Common I/O | Analog input 7, low frequency I/O, standard drive. |
| 10 | AI6 | P0.30/AIN6 | Common I/O | Analog input 6, low frequency I/O, standard drive. |
| 11 | XL1 | P0.00/XL1 | Common I/O | Connect to 32.768 kHz crystal |
| 12 | P0.26 | P0.26 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 13 | XL2 | P0.01/XL2 | Common I/O | Connect to 32.768 kHz crystal |
| 14 | P0.06 | P0.06 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 15 | AI3 | P0.05/AIN3 | Common I/O | Analog input 3 |
| 16 | P0.08 | P0.08 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 17 | Pl.09 | Pl.09 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 18 | AI2 | P0.04/AIN2 | Common I/O | Analog input 2 |
| 19 | VCC | - | - | Power supply |
| 20 | P12 | P0.12 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 21 | GND | - | - | Ground line, connect to the power reference ground |
| 22 | P0.07 | P0.07 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 23 | VDH | VDDH | - | High voltage power supply |
| 24 | GND | - | - | Ground line, connect to the power reference ground |
| 25 | DCH | DCCH | - | DC/DC converter output |
| 26 | RST | P0.18/RESET | Common I/O | QSPI/CSN/extemal reset |
| 27 | VBS | VBUS | - | USB power supply, 5W input, used to USB3.3V voltage regulator |
| 28 | P15 | P0.15 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 29 | D- | D- | - | USB D- |
| 30 | P17 | P0.17 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 31 | D+ | D+ | - | USB D+ |
| 32 | P0.20 | P0.20 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 33 | P0.13 | P0.13 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 34 | P0.22 | P0.22 | Common I/O | QSPI |
| 35 | P0.24 | P0.24 | Common I/O | - |
| 36 | Pl.00 | Pl.00 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 37 | SWD | SWDIO | - | Serial debug programming port clock |
| 38 | Pl.02 | Pl.02 | Common I/O | See details about nrf52833 datasheet on Nordic website |
| 39 | SWC | SWDCLK | - | Serial debug programming port clock |
| 40 | Pl.04 | Pl.04 | Common I/O | Low frequency I/O, standard drive |
| 41 | NF1 | P0.09/NFC1 | Common I/O | NFC input |
| 42 | Pl.06 | Pl.06 | Common I/O | Low frequency I/O, standard drive |
| 43 | NF2 | P0.10/NFC2 | Common I/O | NFC input |