Documentation Center
Pin
Number
Connector
A
Connector
B
Connector
C
Connector
D
Type
Description
1
TXD1
NC
NC
TXD1
I/O
UART TX signal
2
GND
GND
GND
GND
S
Ground
3
SPI_CS
SPI_CS
SPI_CS
SPI_CS
I/O
SPI chip select
signal
4
SPI_CLK
SPI_CLK
SPI_CLK
SPI_CLK
I/O
SPI clock
5
SPI_MISO
SPI_MISO
SPI_MISO
SPI_MISO
I/O
SPI MISO signal
6
SPI_MOSI
SPI_MOSI
SPI_MOSI
SPI_MOSI
I/O
SPI MOSI signal
7
I2C1_SCL
I2C1_SCL
I2C1_SCL
I2C1_SCL
I/O
I2C clock signal
8
I2C1_SDA
I2C1_SDA
I2C1_SDA
I2C1_SDA
I/O
I2C data signal
9
VDD
VDD
VDD
VDD
S
Generated by CPU
module. Used to
power sensor
board if MCU IO
level is not 3.3 V
10
IO2
IO1
IO4
IO6
I/O
General purpose
IO. IO2 controls
the power switch of
3V3_S. When the
3V3_S function is
used, IO2 can not
be used as an
interrupt of the
sensor.
11
3V3_S
3V3_S
3V3_S
3V3_S
S
3.3 V power
supply. Can be
shut down by the
CPU module.
12
IO1
IO2
IO3
IO5
I/O
General purpose
IO - IO controls the
power switch of
3V3_S. When the
3V3_S function is
used, IO2 cannot
be used as an
interrupt of the
sensor.
13
NC
NC
NC
NC
NC
Not connected