Chengdu Ebyte Electronic Technology Co., Ltd
E01-2G4M20S1B User Manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co., Ltd
1-4
3. Size and pin definition
Pin No.
Pin item
Pin direction
Application
1
VCC
Power supply
Power supply must be between 2.0 and 3.6V
2
CE
Input
Module control pin
3
CSN
Input
Chip select pin for starting new SPI communication
4
SCK
Input
SPI clock pin
5
MOSI
Input
SPI data input pin
6
MISO
Output
SPI data output pin
7
IRQ
Output
Interrupt request
，
valid in low level
8
GND
Power supply
Ground, connected to power reference ground (Module fixed)
9
GND
Power supply
Ground, connected to power reference ground (Module fixed)
10
GND
Power supply
Ground, connected to power reference ground
