E22-400M33S User Manual
7
3. Mechanical dimensions and pin definition
Pin Serial
Number
Pin Name
Pin
Orientation
Pin Usage
1
GND
Ground wire, connected to power reference ground
2
GND
Ground wire, connected to power reference ground
3
GND
Ground wire, connected to power reference ground
4
GND
Ground wire, connected to power reference ground
5
GND
Ground wire, connected to power reference ground
6
RXEN
Input
RF switch receive control pin, connected to external microcontroller
IO, active high
7
TXEN
Input
RF switch transmit control pin, connected to external microcontroller
IO or DIO2, active high
8
DIO2
Input/Output
Configurable general purpose IO port (see SX1268 manual for details)
9
VCC
Power supply, range 3.3 to 5.5V (it is recommended to increase the
external ceramic filter capacitor)
10
VCC
Power supply, range 3.3 to 5.5V (it is recommended to increase the
external ceramic filter capacitor)
11
GND
Ground wire, connected to power reference ground
12
GND
Ground wire, connected to power reference ground
13
DIO1
Input/Output
Configurable general purpose IO port (see SX1268 manual for details)
