MMA8653FC datasheet(23/56 Pages) FREESCALE

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MMA8653FC

Sensors

Freescale Semiconductor, Inc.

6.3.2

0x01: OUT_X_MSB, Accelerometer X-axis data register

6.3.3

0x02: OUT_X_LSB, Accelerometer X-axis data register

6.3.4

0x03: OUT_Y_MSB, Accelerometer Y-axis data register

6.3.5

0x04: OUT_Y_LSB, Accelerometer Y-axis data register

6.3.6

0x05: OUT_Z_MSB, Accelerometer Z-axis data register

6.3.7

0x06: OUT_Z_LSB, Accelerometer Z-axis data register

These registers contain the X-axis, Y-axis, and Z-axis10-bit output sample data expressed as 2's complement numbers.

Figure 16. 0x01: OUT_X_MSB, X_MSB Register (Read Only)

Figure 17. 0x02: OUT_X_LSB, X_LSB Register (Read Only)

Figure 18. 0x03: OUT_Y_MSB, Y_MSB Register (Read Only)

Figure 19. 0x04: OUT_Y_LSB, Y_LSB Register (Read Only)

Figure 20. 0x05: OUT_Z_MSB, Z_MSB Register (Read Only)

Figure 21. 0x06: OUT_Z_LSB, Z_LSB Register (Read Only)

OUT_X_MSB, OUT_X_LSB, OUT_Y_MSB, OUT_Y_LSB, OUT_Z_MSB, and OUT_Z_LSB are stored in the auto-incrementing

address range of 0x01 to 0x06 to reduce reading the status followed by 10-bit axis data to 7 bytes. If the F_READ bit is set (0x2A

bit 1), auto increment will skip over LSB registers. This will shorten the data acquisition from 7 bytes to 4 bytes. The LSB registers

can only be read immediately following the read access of the corresponding MSB register. A random read access to the LSB

registers is not possible. Reading the MSB register and then the LSB register in sequence ensures that both bytes (LSB and

MSB) belong to the same data sample, even if a new data sample arrives between reading the MSB and the LSB byte.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

XD9

XD8

XD7

XD6

XD5

XD4

XD3

XD2

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

XD1

XD0

000000

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

YD9

YD8

YD7

YD6

YD5

YD4

YD3

YD2

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

YD1

YD0

00000

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ZD9ZD8

ZD7ZD6ZD5ZD4ZD3ZD2

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ZD1

ZD0

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