[Interface]：Type-C
[Dimensions]：65 x 30 mm
[Introduction]：La série EWT22A-400BWL22S est un kit d'évaluation et de test basé sur le module trois-en-un LoRa/Wi-Fi/Bluetooth EWM22A-400BWL22S, réduisant considérablement le cycle de développement. Pour plus d'informations sur l'EWM22A-400BWL22S, veuillez consulter le site web officiel afin de télécharger les informations pertinentes.
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| Pin number | Pin Name | Pin direction | Pin Purpose |
| 1 | NC | - | Reserved pins |
| 2 | TX_EN | - | Reserved pins |
| 3 | RX_EN | - | Reserved pins |
| 4 | LINK | Output | Bluetooth/WIFI connection status indication pin: |
BLE: Default high level, BLE is connected to low level; | |||
WIFI: Default high level, WIFI is connected, TCP is not connected, output 1Hz high and low level changes, TCP is connected, output low level. | |||
| 5 | WAKE | input | Deep sleep wake-up pin, low level wake-up |
| 6 | NC | Input/Output | Reserved pins |
| 7 | NC | Input/Output | Reserved pins |
| 8 | NC | Input/Output | Reserved pins |
| 9 | NC | Input/Output | Reserved pins |
| 10 | GND | - | Power ground |
| 11 | 3.3V | Output | 3.3V power supply, output DC 3.3V, can be connected to the VCC pin with a jumper cap for module power supply |
| 12 | VCC | input | Module power supply pin, DC 3.0~3.6V |
| 13 | GND | - | Power ground |
| 14 | TXD | Output | TTL serial port output, connected to external RXD input pin |
| 15 | RXD | input | TTL serial port input, connected to external TXD output pin |
| 16 | NC | - | Reserved pins |
| 17 | NC | - | Reserved pins |
| 18 | TO | Output | LoRa transceiver buffer indication and self-test indication, low level is valid |
| 19 | NC | - | Reserved pins |
| 20 | RST | input | Reset pin, low level reset |