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MMA8491Q Datasheet(PDF) 15 Page - Freescale Semiconductor, Inc

Part No. MMA8491Q
Description  Xtrinsic MMA8491Q 3-Axis Multifunction Digital Accelerometer
Download  26 Pages
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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MMA8491Q Datasheet(HTML) 15 Page - Freescale Semiconductor, Inc

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MMA8491Q
Sensors
Freescale Semiconductor, Inc.
15
Figure 10. Single byte read
4.3
Multiple byte read
When performing a multibyte read or “burst read”, the MMA8491Q automatically increments the received register address
commands after a read command is received. Therefore, after following the steps of a single byte read, multiple bytes of data
can be read from sequential registers after each MMA8491Q acknowledgment (AK) is received, until a no acknowledge (NAK)
occurs from the Master, followed by a stop condition (SP) signaling an end of transmission.
continued . . .
Figure 11. Multiple byte read
Legend
ST: Start Condition
SP: Stop Condition
NAK: No Acknowledge
W: Write = 0
SR: Repeated Start Condition
AK: Acknowledge
R: Read = 1
Master
ST
Device
Address[7:1]
W
Register
Address[7:0]
SR
Device
Address[7:1]
R
NAK
SP
Slave
AK
AK
AK
Data[7:0]
Master
ST
Device
Address[7:1]
W
Register
Address[7:0]
SR
Device
Address[7:1]
R
AK
Slave
AK
AK
AK
Data[7:0]
Master
AK
AK
NAK
SP
Slave
Data[7:0]
Data[7:0]
Data[7:0]


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