Chengdu Ebyte Electronic Technology Co.,Ltd.
Copyright ©2012–2020
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Chengdu Ebyte Electronic Technology Co.,Ltd.
6
3.0 Size and pin definition
Image 3-1 Mechanical Dimensions and Pin Definition
Chart 3-1 Pin definition table
No.
Name
Direction
Function
1
GND
-
Ground wire, connect to power reference ground
2
GND
-
Ground wire, connect to power reference ground
3
GND
-
Ground wire, connect to power reference ground
4
GND
-
Ground wire, connect to power reference ground
5
GPIO1
DI/O
Configurable multi-function IO port (see CMT2300A manual for details)
6
GPIO2
DI/O
Configurable multi-function IO port (see CMT2300A manual for details)
7
GPIO3
DI/O
Configurable multi-function IO port (see CMT2300A manual for details)
8
VCC
-
Module power supply, connect to power 3.3V
9
GND
-
Ground wire, connect to power reference ground
10
GND
-
Ground wire, connect to power reference ground
11
SCLK
DI
SPI clock pin
12
SDIO
DI/O
SPI data pins
13
CSB
DI
Chip select for SPI access register
14
FCSB
DI
Chip select for SPI access to FIFO
15
GND
-
Ground wire, connect to power reference ground
16
GND
-
Ground wire, connect to power reference ground
17
ANT
-
Module RF stamp hole interface, equivalent impedance is about 50Ω
18
GND
-
Ground wire, connect to power reference ground
