[Introduction]:E52-400NW22S is a wireless serial port LoRa MESH networking module based on LoRa spread spectrum technology. The maximum output power is +22dBm, the maximum air rate can reach 62.5K, and the maximum supported baud rate is 460800 bps. The default working frequency band of this LoRa module is 433.125MHz. It adopts the new LoRa MESH networking technology and has the functions of decentralization, self-routing, network self-healing, and multi-level routing. It is suitable for smart homes and industrial sensors, wireless alarm security systems, and buildings. Automation solutions, smart agriculture and other application scenarios.
Pin number | Pin name | Pin direction | Pin usage |
1 | PB3 | input Output | Some function indication pins, high level by default, active low level (connected to test suite LED2) |
2 | PB4 | input Output | RF transmission indication pin, default high level, active low level (connected to test suite LED1) |
3 | PB5 | input Output | Not used yet, NC recommended |
4 | PB6 | input Output | Not used yet, NC recommended |
5 | PB7 | input Output | Not used yet, NC recommended |
6 | PB8 | input Output | Not used yet, NC recommended |
7 | PA0 | input Output | Default is high level, pull it low when power on to enter the Bootloader (connected to the test suite KEY button) |
8 | PA1 | input Output | Not used yet, NC recommended |
9 | PA2 | input Output | UART_TXD, serial port transmit pin |
10 | PA3 | input Output | UART_RXD, serial port receiving pin |
11 | PA4 | input Output | Not used yet, NC recommended |
12 | PA5 | input Output | Not used yet, NC recommended |
13 | GND | input Output | Ground wire, connected to the power reference ground |
14 | ANT | input Output | Antenna interface, 50Ω characteristic impedance (connected to SMA interface of test kit) |
15 | GND | input Output | Ground wire, connected to the power reference ground |
16 | PA8 | input Output | Not used yet, NC recommended |
17 | NRST | input | Reset pin, default high level, active low level (connected to test suite RST button) |
18 | PA9 | input Output | Not used yet, NC recommended |
19 | PA12 | input Output | Not used yet, NC recommended |
20 | PA11 | input Output | Not used yet, NC recommended |
21 | PA10 | input Output | Not used yet, NC recommended |
22 | PB12 | input Output | Not used yet, NC recommended |
23 | PB2 | input Output | Not used yet, NC recommended |
24 | PB0 | input Output | Not used yet, NC recommended |
25 | PA15 | input Output | Not used yet, NC recommended |
26 | PC13 | input Output | Not used yet, NC recommended |
27 | GND | input Output | Ground wire, connected to the power reference ground |
28 | VDD | input | Power supply VDD, maximum input voltage 3.6V, recommended to be powered by 3.3V LDO |
29 | SWDIO | - | debug pin |
30 | SWCLK | - | debug pin |