IDP-782 - Hardware Guide
3.12 Sensors
3.12.1 Temperature Sensor
Parameter Value
Range -40 to +85°C
Accuracy ±2°C (-25 to +85°C)
±3°C (below -25°C)
3.12.2 Accelerometer
The terminal has a 3D accelerometer to detect motion in any axis.
In low power applications frequent GPS fixes can dominate the power budget. To reduce the power budget
effects of GPS fixes, the accelerometer can be used to detect if motion has occurred.
The accelerometer thresholds to detect advanced features such as driver behavior monitoring vary
depending on the environment. In order to avoid false detects, extensive testing is required to ensure that
adequate acceleration magnitude thresholds and time durations are used.
Parameter Condition Min. Typical Max. Units
Resolution 2 g - 3.91 - mg
Acceleration Range software selectable - ±2 - g
- ±4 - g
- ±8 - g
- ±16 - g
Bandwidth Filtering Selectable via digital interface 8 - 1000 Hz
Sensitivity 2 g - 256 - LSB/g
4 g - 128 - LSB/g
8 g - 64 - LSB/g
16 g - 32 - LSB/g
Sensitivity Temperature Drift 3V supply - +-0.02 - %/K
Zero-g Offset Ta = 25°C - +-80 - mg
Zero-g Offset Temperature Drift 3V supply - +-1 - mg/K
Wake up time From low power or suspend modes - 0.8 - mS
Start Up Time Power on reset - 2 - mS
T213, Version 02
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