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CMA3000-D01-30 参数 Datasheet PDF下载

CMA3000-D01-30图片预览
型号: CMA3000-D01-30
PDF下载: 下载PDF文件 查看货源
内容描述: 3轴加速度计 [3-axis accelerometer]
分类和应用:
文件页数/大小: 35 页 / 945 K
品牌: VTI [ VTI TECHNOLOGIES ]
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CMA3000-D0X Series  
2.6 Interrupt function (INT-pin)  
2.6.1 Usage  
Depending on the CMA3000 operational configuration, the INT-pin can give an interrupt in following  
cases:  
1. Normal measurement mode: INT-pin gives interrupt when new data is available  
2. Free fall detection mode: INT-pin gives an interrupt to signal that free fall is detected  
3. Motion detection mode: INT-pin gives an interrupt to signal that motion is detected  
Interrupt polarity (active high/low) can be configured with CTRL register's INT_LEVEL bit.  
If the CMA3000 is in normal measurement mode, the INT pin is automatically cleared by reading  
the acceleration output data. INT-pin data ready functionality can be disabled by setting the CTRL  
register's INT_DIS bit.  
If INT-pin gives an interrupt in free fall or motion detection mode, the INT_STATUS register must  
be read to acknowledge and clear the interrupt.  
In motion detection mode the INT_STATUS register content gives information of which XYZ  
directions have exceed the trigger conditions.  
See section 3.3 for CTRL and INT_STATUS register details.  
2.7 Clock  
The CMA3000 has an internal factory trimmed oscillator and clock generator. Internal frequencies  
vary product by product.  
VTI Technologies Oy  
www.vti.fi  
11/ 35  
Doc.Nr. 8281000.12  
Rev. 0.12