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MMA8491Q Datasheet(PDF) 17 Page - Freescale Semiconductor, Inc

Part No. MMA8491Q
Description  Xtrinsic MMA8491Q 3-Axis Multifunction Digital Accelerometer
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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MMA8491Q Datasheet(HTML) 17 Page - Freescale Semiconductor, Inc

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MMA8491Q
Sensors
Freescale Semiconductor, Inc.
17
5.3
Data registers
5.3.1
0x00 Status register
Register 0x00 reflects the real-time status information of the X, Y, and Z sample data. The data read bits (ZYXDR, ZDR, YDR,
XDR) are set when samples are taken and ready to be read.
Table 12. STATUS register
Field
Description
ZYXDR
X, Y, Z-axis new Data Ready (and available)
•ZYXDR signals that a new sample for all channels is available.
• ZYXDR is cleared when the high-bytes of the acceleration data (OUT_X_MSB, OUT_Y_MSB, OUT_Z_MSB) of all channels
are read.
0: No new set of data ready (default value)
1: A new set of data is ready
ZDR
Z-axis new Data Ready (and available)
•ZDR is set whenever a new acceleration sample related to the Z-axis is generated.
• ZDR is cleared anytime OUT_Z_MSB register is read.
0: No new Z-axis data is ready (default value)
1: A new Z-axis data is ready
YDR
Y-axis new Data Ready (and available)
•YDR is set whenever a new acceleration sample related to the Y-axis is generated.
• YDR is cleared anytime OUT_Y_MSB register is read.
0: No new Y-axis data ready (default value)
1: A new Y-axis data is ready
XDR
X-axis new Data Ready (and available)
•XDR is set whenever a new acceleration sample related to the X-axis is generated.
• XDR is cleared anytime OUT_X_MSB register is read.
0: No new X-axis data ready (default value)
1: A new X-axis data is ready


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