SCA21X0 VTI [VTI technologies], SCA21X0 Datasheet - Page 2

• Manufacturer Part Number: SCA21X0
• Description: VTI Automotive Digital Accelerometer Platform
• Manufacturer: VTI [VTI technologies]

TABLE OF CONTENTS
Table of Contents .....................................................................................................................2
General Description..................................................................................................................5
2 Operation Modes .................................................................................................................8
3 Addressing Space .............................................................................................................12
VTI Technologies Oy
www.vti.fi
1.1
1.2
1.3
1.4
2.1
2.2
2.3
2.4
2.5
2.6
2.7
3.1
1.4.1
1.4.2
1.4.3
1.4.4
1.4.5
1.4.6
1.4.7
1.4.8
1.4.9
1.4.10
1.4.11
2.3.1
2.3.2
2.7.1
2.7.2
3.1.1
3.1.2
2.3.2.1
2.3.2.2
2.7.1.1
2.7.1.2
2.7.1.3
2.7.1.4
2.7.1.5
2.7.2.1
2.7.2.2
3.1.1.1
3.1.1.2
3.1.2.1
Introduction ................................................................................................................................5
Features ......................................................................................................................................5
Typical applications...................................................................................................................6
Functional Description ..............................................................................................................6
Measurement mode ...................................................................................................................8
Temperature output ...................................................................................................................8
Self-diagnostic functions ..........................................................................................................8
Power Down mode.....................................................................................................................9
Recommended start-up sequence ...........................................................................................9
Recommended operation sequence ......................................................................................10
Recommended procedures or optional features ..................................................................11
Output registers .......................................................................................................................12
Sensing element ...................................................................................................................................6
Interface IC............................................................................................................................................6
Capacitance to voltage conversion.......................................................................................................6
Analog to digital conversion ..................................................................................................................7
Signal conditioning and filtering ............................................................................................................7
Temperature measurement ..................................................................................................................7
Memory .................................................................................................................................................7
SPI ........................................................................................................................................................7
Self diagnostics.....................................................................................................................................7
Power supply interface..........................................................................................................................7
Factory calibration.................................................................................................................................7
Memory self-diagnostic .........................................................................................................................8
Signal path self-diagnostic ....................................................................................................................8
SCA8x0/SCA21x0/SCA31x0 ..............................................................................................................11
SCA8x0 ...............................................................................................................................................11
X axis acceleration output...................................................................................................................12
Y axis acceleration output...................................................................................................................13
SCA8X0 – single axis accelerometers ..........................................................................................8
SCA21X0 and SCA31X0 – multi axis accelerometers ..................................................................8
Read back procedure ..................................................................................................................11
Checksum during operation.........................................................................................................11
Saturated data .............................................................................................................................11
Noiseless output ..........................................................................................................................11
Component ID..............................................................................................................................11
Mass deflection during operation.................................................................................................11
Monitor acceleration data during mass deflection .......................................................................12
X_LSB..........................................................................................................................................12
X_MSB.........................................................................................................................................13
Y_LSB..........................................................................................................................................13
Doc. Nr. 82 694 00 C
SCA8X0/21X0/3100 Series
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