E73-2G4M08S1CX nRF52840 Wireless BLE Module BLE4.2 BLE 5.0 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
[Product weight]：1.3g±0.1g
[Size]：13.0*18.0mm
[Introduction]：E73-2G4M08S1CX is BLE 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.
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| 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 | SWCLK | - | 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 |