Sensors

16

Freescale Semiconductor

MMA7455L

Signed byte data (2’s compliment): Zero G = 8’h00

Signed byte data (2’s compliment): Zero G = 8’h00

DRDY

1: Data is ready

0: Data is not ready

DOVR

1: Data is over written

0: Data is not over written

PERR

1: Parity error is detected in trim data. Then, self test is

disabled

0: Parity error is not detected in trim data

LDX

1: Level detection detected on X axis

0: Level detection not detected on X axis

LDY

1: Level detection detected on Y axis

0: Level detection not detected on Y axis

LDZ

1: Level detection detected on Z axis

0: Level detection not detected on Z axis

PDX *Note

1: Pulse is detected on X axis at single pulse detection

0: Pulse is not detected on X axis at single pulse detection

PDY *Note

1: Pulse is detected on Y axis at single pulse detection

0: Pulse is not detected on Y axis at single pulse detection

PDZ *Note

1: Pulse is detected on Z axis at single pulse detection

0: Pulse is not detected on Z axis at single pulse detection

Note: This bit value is not valid at double pulse detection

INT1

1: Interrupt assigned by “Detection control” register is de-

tected

0: Interrupt assigned by “Detection control” register is not

detected

INT2

1: Interrupt assigned by “Detection control” register is de-

tected

0: Interrupt assigned by “Detection control” register is not

detected

or not.

Note: Bit weight is for 2g 8 bit data output. Typical value for reference only. Variation is specified in "Electrical Char-

acteristics" section.

I2CDIS

$07: 8bits output value Y (Read only)

D7

D6

D5

D4

D3

D2

D1

D0

Bit

YOUT[7]

YOUT [6]

YOUT [5]

YOUT [4]

YOUT [3]

YOUT [2]

YOUT [1]

YOUT [0]

Function

0

0

0

0

0

0

0

0

Default

$08: 8bits output value Z (Read only)

D7

D6

D5

D4

D3

D2

D1

D0

Bit

ZOUT[7]

ZOUT [6]

ZOUT [5]

ZOUT [4]

ZOUT [3]

ZOUT [2]

ZOUT [1]

ZOUT [0]

Function

0

0

0

0

0

0

0

0

Default

$09: Status register (Read only)

D7

D6

D5

D4

D3

D2

D1

D0

Bit

--

--

--

--

--

PERR

DOVR

DRDY

Function

0

0

0

0

0

0

0

0

Default

$0A: Detection source register (Read only)

D7

D6

D5

D4

D3

D2

D1

D0

Bit

LDX

LDY

LDZ

PDX

PDY

PDZ

INT2

INT1

Function

0

0

0

0

0

0

0

0

Default

D7

D6

D5

D4

D3

D2

D1

D0

Bit

I2CDIS

DVAD[6]

DVAD[5]

DVAD[4]

DVAD[3]

DVAD[2]

DVAD[1]

DVAD[0]

Function

0

0

0

1

1

1

0

1

Default