Chengdu Ebyte Electronic Technology Co.,Ltd. E28-2G4M27S User Manua
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Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co.,Ltd.
4
Size
15*26.5mm
Antenna
IPEX/PCB
50Ω Impedance
3 Dimension and Pin Definition
No.
Pin item
Pin direction
Application
1
VCC
Power supply, 2.5 ~ 3.6V (recommend to add external ceramic filter capacitor)
2
GND
Ground, connecting to power source 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 for details)
7
GND
Ground, connecting to power source reference ground
8
RX_EN
Input
LNA control pin
，
valid in high level
9
TX_EN
Input
PA control pin
，
valid in high level
10
GND
Ground, connecting to power source reference ground
11
NRESET
Input
Chip reset initiation input pin, valid under low level, built-in 50k pull-up resistor
12
BUSY
Output
For status indication(refer to SX1280 Datasheet for details)
13
DIO1
Input/Output
GPIO(refer to SX1280 Datasheet for details)
