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©Vecow ESOM-MT-500 User Manual
GETTING TO KNOW YOUR ESOM-MT-500
2.4.4 J1: I2C/SPI/GPIO Pin Header
There is an I²C/SPI/GPIO Pin Header labeled as ‘J1’, which is used for connecting
the I²C, SPI, and 12 GPIO devices. The pin assignments are listed as below.
J1
1
2
Pin No.
Signal Name
Pin No.
Signal Name
1
SPI_CLK
2
SPI_CS
3
SPI_MISO
4
SPI_MOSI
5
GPIO79
6
GPIO53
7
GPIO80
8
GPIO54
9
GPIO52
10
GPIO78
11
GPIO77
12
GPIO57
13
I2C_CLK1
14
GPIO56
15
I2C_DATA1
16
GPIO55
17
GND
18
GPIO69
19
1.8V
20
GPIO70