SCA3000-E01-25 查看數據表（PDF） - VTI technologies
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SCA3000-E01-25 Datasheet PDF : 43 Pages
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SCA3000 Series
1.2.3 Factory calibration
Sensors are factory calibrated and the trimmed parameters are gain, offset and the frequency of
the internal oscillator. Calibration parameters will be read automatically from the internal non-
volatile memory during sensor startup.
1.2.4 Supported features
Features supported by individual SCA3000 products are listed in Table 1 below.
Table 1. SCA3000 devices’ summary.
Features
Supply
voltage
I/O voltage
Measuring
range
Resolution
Sensitivity
Output
buffer
Motion
detection
Free fall
detection
Interface
Temperatu
re output
Clock
SCA3000-D01 (SPI) /
SCA3000-D02 (I2C)
2.35 V – 3.6 V
1.7 V – 3.6 V
±2 g
0.75mg / 0.04°
1333 counts/g
User enabled,
64 sampl./axis
User enabled
User enabled
SPI max 1.6 MHz (-D01) /
I2C fast mode (-D02)
Yes
Internal
SCA3000-E01 (SPI) /
SCA3000-E02 (I2C)
2.35 V – 3.6 V
1.7 V – 3.6 V
±3 g
1mg / 0.06°
1000 counts/g
User enabled,
64 sampl./axis
User enabled
User enabled
SPI max 325 kHz (-E01) /
I2C std mode
(-E02)
No
Internal
SCA3000-E04
2.35 V – 3.6 V
1.7 V – 3.6 V
±6 g
2mg / 0.11°
500 counts/g
User enabled,
64 sampl./axis
User enabled
User enabled
SPI max 325 kHz
No
Internal
SCA3000-E05
2.35 V – 3.6 V
1.7 V – 3.6 V
±18 g
6.25mg / 0.36°
160 counts/g
User enabled,
64 sampl./axis
User enabled
User enabled
SPI max 325 kHz
No
Internal
1.2.5 Operation modes
1.2.5.1 Measurement
The SCA3000 is in normal measurement mode by default after start up. The sensor offers
acceleration information via the SPI or I2C when the master requires it. The master can acquire one
axis acceleration or all three axis acceleration depending on the application. Measurement
resolution depends on the product type (see Table 1).
1.2.5.2 Motion Detection
Motion Detection (MD) mode is intended to be used to save system level power consumption. In
this mode, the SCA3000 activates the interrupt via the INT-pin when motion is detected. Sensitivity
levels can be configured via the SPI or I2C bus for each axis. Moreover, the detection condition can
be defined using sensitivity directions with AND / OR / mux logic. Once the interrupt has happened,
the detected direction can be read out from the corresponding status register.
Normal acceleration information is not available in MD mode.
1.2.6 Free-Fall Detection
Free-Fall Detection (FFD) is intended to be used to save system resources. This feature activates
the interrupt via the INT-pin when free-fall is detected. The minimum detectable distance depends
on the individual product. Normal acceleration information is available when the FFD is enabled.
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Rev.A.07
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