Intrinsyc LANTRONIX Open-Q 820 User Manual page 31

3.9.8 Sensor IO Expansion Header J53
The sensor expansion header J53 allows for a 24-pin connection to an optional sensor board. If user application
does not require a sensor, then this header can be used for other applications that require I2C or GPIO input
and output connections.
Following is the pin breakout for sensor expansion header J53.
Description
SSC I2C-3 serial
data
SSC I2C-3 serial
clock
Sensor reset signal
from processor to
sensor via GPIO80
Open-Q™ 820 / 820Pro µSOM Dev Kit User Guide
Figure 10 J53 Sensor Expansion Header
Table 3.8-3 Sensor Expansion Header J53 Pin out
Signal
SSC_I2C_3_SDA
SSC_I2C_3_SCL
MEMS_RESET_N
Open-Q 820 µSOM Development Kit
Pin Description
NO
J53[1] Acceleromete
r interrupt
input to
processor via
GPIO117
J53[3] Cap interrupt
input to
processor via
GPIO123
J53[5] Gyroscope
interrupt input
to processor
via GPIO118
Signal Pin
ACCEL_INT_N J53[2]
CAP_INT_N J53[4]
GYRO_INT J53[6]
NO
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