Ebyte E22-400M22S - Page 6

Chengdu Ebyte Electronic Technology Co., Ltd. E22-400M22S User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
5
No.
Name
Direction
Function
1
GND
Ground
2
GND
Ground
3
GND
Ground
4
GND
Ground
5
GND
Ground
6
RXEN
Input
RF switch receiving control pin, connected to external microcontroller IO, valid
in high level
7
TXEN
Input
RF switch transmitting control pin, connected to external microcontroller IO or
DIO2, valid in high level
8
DIO2
Input/Output
Configurable universal IO port (see SX1262 manual for details)
9
VCC
Output
Power supply, 1.8V~3.7V (it is recommended to add external ceramic filter
capacitor)
10
GND
Ground
11
GND
Ground
12
GND
Ground
13
DIO1
Input/Output
Configurable universal IO port (see SX1262 manual for details)
14
BUSY
Output
For status indication (see SX1262 manual for details)
15
NRST
Input
Chip reset trigger input pin, valid in low level
16
MISO
Output
SPI data output pin
17
MOSI
Input
SPI data input pin
18
SCK
Input
SPI clock input pin
19
NSS
Input
Module chip select pin for starting an SPI communication
20
GND
Ground
21
ANT
Antenna interface, stamp hole (50 ohm characteristic impedance)
22
GND
Ground