Chengdu Ebyte Electronic Technology Co., Ltd.
Manual
E28-2G4M12S User
Copyright ©2012–2020
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
1-6
Pin No
Pin item
Pin direction
Pin application
1
VCC
-
Power supply: 1.8~3.6V (Ceramic filter capacitor is advised to add)
2
GND
-
Ground, connecting to power supply reference ground
3
MISO_TX
Output
SPI data output pin,can be used as UART transmitting pin
4
MOSI_RX
Input
SPI data input pin,can be used as UART receiving pin
5
SCK_RTSN
Input
SPI clock input pin,can be used as UART request transmitting pin
6
NSS_CTS
Input
Module chip selection pin, used to start a SPI communication; and can be used as
UART clearing transmitting pin(refer to SX1280 Datasheet)
7
GND
-
Ground, connecting to power supply reference ground
8
GND
-
Ground, connecting to power supply reference ground
9
NRESET
Input
Chip reset initiation input pin, valid under low level, built-in 50k pull-up resistor
10
BUSY
Output
Status indication (refer to SX1280 Datasheet)
11
DIO1
Input / Output
Configurable IO port
（
Please find more on SX1280 datasheet
）
12
DIO2
Input / Output
Configurable IO port
（
Please find more on SX1280 datasheet
）
13
DIO3
Input / Output
Configurable IO port
（
Please find more on SX1280 datasheet
）
14
GND
-
Ground, connecting to power supply reference ground
