MMA7455LR1 Freescale Semiconductor, MMA7455LR1 Datasheet - Page 24

• Manufacturer Part Number: MMA7455LR1
• Description: Board Mount Accelerometers 3-AXIS DIGITAL 2 4 8G
• Manufacturer: Freescale Semiconductor

Specifications of MMA7455LR1

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Digital Output - Number Of Bits: 8 bit, 10 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.4 V
• Supply Current: 400 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Sensitivity: 64 LSB/g
• Package / Case: LGA-14
• Output Type: Digital
• Acceleration Range: ± 2g, ± 4g, ± 8g
• No. Of Axes: 3
• Ic Interface Type: I2C, SPI
• Sensor Case Style: LGA
• No. Of Pins: 14
• Supply Voltage Range: 2.4V To 3.6V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

$0F: “Who Am I” Value (Read only: Optional)
$10: Offset Drift X LSB (Read/Write)
The following Offset Drift Registers are used for setting and storing the offset calibrations to eliminate the 0g offset. Please refer
to Freescale application note AN3745 for detailed instructions on the process to set and store the calibration values.
Signed byte data (2’s complement): User level offset trim value for X-axis
*Bit weight is for 8g 10-bit data output. Typical value for reference only. Variation is specified in “Electrical Characteristics” section.
$11: Offset Drift X MSB (Read/Write)
Signed byte data (2’s complement): User level offset trim value for X-axis
$12: Offset Drift Y LSB (Read/Write)
Signed byte data (2’s complement): User level offset trim value for Y-axis
*Bit weight is for 2g 8-bit data output. Typical value for reference only. Variation is specified in “Electrical Characteristics” section.
$13: Offset Drift Y MSB (Read/Write)
Signed byte data (2’s complement): User level offset trim value for Y-axis
*Bit weight is for 2g 8-bit data output. Typical value for reference only. Variation is specified in “Electrical Characteristics” section.
24
MMA7455L
XOFF[7]
Weight*
YOFF[7]
Weight*
0/OTP
ID[7]
D7
D7
Bit
D7
D7
Bit
D7
--
--
0
0
0
0
Weight*
Bit
XOFF [6]
YOFF [6]
XOFF[7]
YOFF[7]
64 LSB
64 LSB
0/OTP
ID [6]
D6
D6
D6
D6
D6
0
--
0
--
0
0
XOFF [5]
YOFF [5]
XOFF[6]
YOFF[6]
32 LSB
32 LSB
0/OTP
ID [5]
D5
D5
D5
D5
D5
--
0
0
0
--
0
YOFF[10]
Polarity
XOFF [4]
YOFF [4]
YOFF[5]
XOFF[5]
16 LSB
16 LSB
0/OTP
ID [4]
D4
D4
D4
D4
D4
0
--
0
--
0
0
XOFF [3]
YOFF [3]
YOFF[4]
XOFF[4]
0/OTP
8 LSB
8 LSB
ID [3]
D3
D3
D3
D3
D3
0
--
0
0
--
0
XOFF [10]
YOFF [10]
XOFF [2]
YOFF [2]
YOFF[3]
XOFF[3]
0/OTP
4 LSB
4 LSB
ID [2]
YOFF[9]
256 LSB
D2
D2
D2
D2
D2
0
0
0
0
XOFF [1]
XOFF [9]
YOFF [1]
YOFF[2]
YOFF [9]
XOFF[2]
0/OTP
2 LSB
2 LSB
ID [1]
D1
D1
D1
D1
D1
0
0
0
0
Freescale Semiconductor
XOFF [0]
YOFF [0]
XOFF [8]
YOFF[1]
YOFF [8]
XOFF[1]
0/OTP
1 LSB
ID [0]
1 LSB
D0
D0
D0
D0
D0
0
0
0
0
128 LSB
YOFF[8]
Function
Function
Function
YOFF[0]
Function
XOFF[0]
0.5 LSB
Function
Default
Default
0.5 LSB
Default
Default
Default
Bit
Bit
Bit
Bit
Bit
Sensors