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Pin definition of the LoRa module
Date:2019/6/25 17:15:19   Browse:0

The LoRa1280F27/LoRa1281F27  module uses Semtech's SX1280/sx1281 RF chip, with external PA, output power of 500mW (27dBn). The operating frequency band is 2.4GHz. Lora modulation has better receiving sensitivity and anti-interference ability. At the same time, the SX1280 also has built-in wireless ranging function.

The LoRa1280F27/LoRa1281F27 wireless transceiver module pins are defined as follows:

Note: All IOs are 3.3V high when powered from 5V.

Pin number

Module pin definition

Description

1

VCC

Positive power supply

2

GND

Power ground

3

NRESET

Chip reset trigger pin, active low

4

BUSY

Status indicator foot (see SX1280/1281 specification for details)

5

DIO1

Directly connected to the chip pin, configurable general-purpose IO (see the chip SX1280/1281 specification for details)

6

DIO2

Directly connected to the chip pin, configurable general-purpose IO (see the chip SX1280/1281 specification for details)

7

DIO3

Directly connected to the chip pin, configurable general-purpose IO (see the chip SX1280/1281 specification for details)

8

NSS

Module chip select pin

9

SCK

SPI clock input pin

10

MOSI

SPI data input pin

11

MISO

SPI data input pin

12,15.16

GND

Connected to the negative pole

13

TXEN

Transmit control pin (high level when transmitting, low level when receiving)

14

RXEN

Receive control pin (high level when receiving, low level when transmitting)

17

ANT

50 ohm coaxial antenna

18

GND

Can be connected external ANT negative or left floating


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