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E310-900T23S Wireless Serial Port Module Half-duplex Transparent Transmission
[Introduction]：E310-900T23S is a wireless serial module based on ON Semiconductor's AX5045 narrow-band Sub-GHz RF transceiver solution. Operating in the frequency band 900.0MHz to 931.0MHz (default 915.0MHz), it has functions such as half-duplex transparent transmission, wake-up on air (ultra-low power), relay and data transfer ( distance extension).
| Pin number | Pin name | Pin Orientation | Pin usage |
|---|---|---|---|
| 1 | NC | - | Empty foot |
| 2 | GND | - | Module ground wire |
| 3 | NC | - | Empty foot |
| 4 | NC | - | Empty foot |
| 5 | NC | - | Empty foot |
| 6 | NC | - | Empty foot |
| 7 | NC | - | Empty foot |
| 8 | GND | - | Module ground wire |
| 11 | GND | - | Module ground wire |
| 12 | ANT | - | Antenna |
| 13 | GND | - | Module ground wire |
| 14 | GND | - | Ground wire, connected to power reference ground |
| 15 | GND | - | Connect to power supply, ground reference |
| 16 | GND | - | Connect to power supply, ground reference |
| 19 | GND | - | Connect to power supply, ground reference |
| 20 | M0 | Input (very weak pull-up) | Cooperate with M1 to determine the 4 working modes of the module (can not be suspended, if not used, it can be grounded) |
| 21 | M1 | Input (very weak pull-up) | Cooperate with M0 to determine the 4 working modes of the module (can not be suspended, if not used, it can be grounded) |
| 22 | RXD | Input | TTL serial port input, connected to the external TXD output pin; |
| 23 | TXD | Output | TTL serial output, connected to external RXD input pin; |
| 24 | AUX | Output | Used to indicate the working status of the module;the user wakes up the external MCU, and outputs a low level during the power-on self-test initialization; (can be left floating) |
| 25 | VCC | - | Module power positive reference, voltage range: 2.3 ~ 5.5V DC |
| 26 | GND | - | Module ground |