Chengdu Ebyte Electronic Technology Co.,Ltd.
E220-900M22S User Manual
Copyright ©2012–2021
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
6
3 Size and pin definition
Pin No.
Item
Direction
Description
1
GND
Ground, connect to power reference ground
2
GND
Ground, connect to power reference ground
3
GND
Ground, connect to power reference ground
4
GND
Ground, connect to power reference ground
5
DIO3
Configurable universal IO port (see llcc68 manual for details)
6
RXEN
input
RF switch receive control pin, connect external MCU IO, high level
effective
7
TXEN
input
RF switch emission control pin, connected to external MCU IO or dio2,
high level effective
8
DIO2
Input / output
Configurable universal IO port (see llcc68 manual for details)
9
VCC
Power supply, range 1.8V ~ 3.7V (it is recommended to add ceramic filter
capacitor externally)
10
GND
Ground, connect to power reference ground
11
GND
Ground, connect to power reference ground
12
GND
Ground, connect to power reference ground
13
DIO1
Input / output
Configurable universal IO port (see llcc68 manual for details)
14
BUSY
output
For status indication (see llcc68 manual for details)
