[IC]:SX1278
[Frequency]:410~441MHz
[Power]:19~20dBm
[Distance]:3.0km
[Interface]:UART
[Introduction]:E32-433T20D is a wireless serial port module based on Semtech's SX1278 RF chip Block (TTL level), transparent transmission mode, working in the 410-441MHz frequency band (default 433MHz), using LoRa spread spectrum technology.
Pin No. | Pin Item | Pin Direction | Pin Application |
---|---|---|---|
1 | M0 | input (very weak pull-up) | cooperates with M1 to determine the 4 working modes of the module. (Cannot be left floating, can be grounded if not used) |
2 | M1 | input (very weak pull-up) | cooperates with M0 to determine the 4 working modes of the module. (Cannot be left floating, can be grounded if not used) |
3 | RXD | input | TTL serial input, connect to external TXD output pin; Can be configured as open-drain or pull-up input, see parameter settings for details. |
4 | TXD | output | TTL serial output, connect to external RXD input pin;Can be configured as open-drain or push-pull output, see parameter settings for details. |
5 | AUX | outputs | Used to indicate the working status of the module; (can be left floating)The user wakes up the external MCU, and outputs a low level during the power-on self-test initialization;It can be configured as open-drain output or push-pull output, see parameter settings for details. |
6 | VCC | input | Positive reference of module power supply, voltage range: 2.3~5.5V DC |
7 | GND | Input | Module ground wire |
8 | Fixing | holes Fixing holes | |
9 | Fixing | hole Fixing hole | |
10 | Fixing | hole Fixing hole | |