Hardware Guide

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Rev. 3 Micronet SmartCAM™ - Hardware Guide 25 / 50
Table 4: Ignition line States, Electrical Parameters
Input State
Typical
Minimum
Maximum
Low
0V
-30V
+6V
High
12V-24V
+7V
+30V
General Purpose I/O
Analog and Digital Input lines
In addition to the ignition line, the SmartCAM™ provides one automotive input line (0-32V). This input lines
can be read as digital (state 0 or 1) or analog (voltage level) lines. It also provides a configurable GPIO for
input/output. For more information about these interface signals please see the digital output signals map
Pinout by Functionality.
Digital input
IGN (automotive voltage state) is for monitoring the ignition switch signal. The other input line can be used
for any purpose, like sensing door opening, sensing bus amber lights, etc.
Analog Input
GPIO can be treat as analog input to monitor the value range of compatible vehicle sensors, such as an
analog fuel gauge. The supported voltage range is from 0V to 30V.
Open Collector Output
The SmartCAM™ also provides one O.C output line for external peripheral control. For more information
about these interface signals please see the digital output signals map Pinout by Functionality.