Documentation Center
Figure 8: Qwicc Cable
The table below shows the Qwiic Connect cable color and function definition:
Pin
Color
Function
Reserved I2C Interface
The RAK1920 module has a reserved I2C interface, and it can be used for generic I2C interface sensors.
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NOTE:
The I2C interface only supports 3.3 V type of sensors. The reversed I2C interface is shown in Figure 9.
R
A
K
19
20
V
e
r
A
.
3.3V
GND
SDA
SCL
Figure 9: Reserved I2C Interface
Electrical Characteristics
Absolute Maximum Ratings
Table below shows the absolute maximum ratings of the RAK1920 module:
Symbol
Description
Min.
Nom.
Max.
Unit
1
Yellow
I2C Clock
2
Blue
I2C Data
3
Red
3.3 V
4
Black
GND
VBAT
Power supply for the module
-0.5
4.2
V
