Chengdu Ebyte Electronic Technology Co., Ltd. E19 -868M20S User Manual
Copyright ©2012–2018
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
4
3.Size and pin definition
Pin No
Pin item
Pin direction
Pin application
1
GND
Input
Ground electrode, connected to the power reference ground
2
DIO5
Input/Output
Configurable IO port
（
Please find more on SX1278 datasheet
）
3
DIO4
Input/Output
Configurable IO port
（
Please find more on SX1278 datasheet
）
4
DIO3
Input/Output
Configurable IO port
（
Please find more on SX1278 datasheet
）
5
DIO2
Input/Output
Configurable IO port
（
Please find more on SX1278 datasheet
）
6
DIO1
Input/Output
Configurable IO port
（
Please find more on SX1278 datasheet
）
7
DIO0
Input/Output
Configurable IO port
（
Please find more on SX1278 datasheet
）
8
RST
Input
Reset
9
NC
--
Not connect
10
GND
Input
Ground electrode, connected to the power reference ground
11
VCC
Input
Power supply: 1.8~3.6V (3.3V Ceramic filter capacitor is advised to add)
12
SCK
Input
SPI clock
13
M ISO
Output
SPI clock
14
M OSI
Input
SPI clock
15
NSS
Input
Chip select
