MMA7455LT Freescale Semiconductor, MMA7455LT Datasheet - Page 25

• Manufacturer Part Number: MMA7455LT
• Description: Board Mount Accelerometers 3-AXIS DIGITAL 2 4 8G
• Manufacturer: Freescale Semiconductor

Specifications of MMA7455LT

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• 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
• Sensor Case Style: LGA
• No. Of Pins: 14
• Supply Voltage Range: 2.4V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Ic Interface Type: I2C, SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 10. Configuring the g-Select for 8-bit output using Register $16 with GLVL[1:0] bits
$14: Offset Drift Z LSB (Read/Write)
Signed byte data (2’s complement): User level offset trim value for Z-axis
*Bit weight is for 2g 8-bit data output. Typical value for reference only. Variation is specified in “Electrical Characteristics” section.
$15: Offset Drift Z MSB (Read/Write)
Signed byte data (2’s complement): User level offset trim value for Z-axis
*Bit weight is for 2g 8-bit data output. Typical value for reference only. Variation is specified in “Electrical Characteristics” section.
$16: Mode Control Register (Read/Write)
GLVL [1:0]
00: 8g is selected for measurement range.
10: 4g is selected for measurement range.
01: 2g is selected for measurement range.
STON
0: Self-test is not enabled
1: Self-test is enabled
MODE [1:0]
00: Standby Mode
Sensors
Freescale Semiconductor
Weight*
ZOFF[7]
Bit
D7
D7
D7
0
--
0
--
0
Weight*
Bit
GLVL [1:0]
ZOFF[7]
ZOFF[6]
64 LSB
DRPD
D6
D6
D6
00
01
10
--
0
0
0
Table 11. Configuring the Mode using Register $16 with MODE[1:0] bits
ZOFF[6]
ZOFF[5]
32 LSB
SPI3W
D5
D5
D5
0
--
0
0
MODE [1:0]
00
01
10
11
ZOFF[10]
Polarity
ZOFF[5]
ZOFF[4]
16 LSB
STON
D4
D4
D4
--
0
0
0
ZOFF[4]
g-Range
ZOFF[3]
GLVL[1]
8 LSB
D3
D3
D3
8g
2g
4g
--
0
0
0
01: Measurement Mode
10: Level Detection Mode
11: Pulse Detection Mode
SPI3W
DRPD
0: Data ready status is output to INT1/DRDY PIN
1: Data ready status is not output to INT1/DRDY PIN
0: SPI is 4 wire mode
1: SPI is 3 wire mode
Pulse Detection Mode
Level Detection Mode
Measurement Mode
ZOFF[10]
ZOFF[3]
ZOFF[2]
GLVL[0]
4 LSB
Standby Mode
ZOFF[9]
256 LSB
D2
D2
D2
0
0
0
Function
ZOFF[2]
MODE[1]
ZOFF[1]
ZOFF[9]
2 LSB
D1
D1
D1
0
0
0
Sensitivity
ZOFF[1]
MODE[0]
16 LSB/g
64 LSB/g
32 LSB/g
ZOFF[0]
ZOFF[8]
1 LSB
D0
D0
D0
0
0
0
128 LSB
ZOFF[8]
ZOFF[0]
MMA7455L
0.5 LSB
Function
Function
Function
Default
Default
Default
Bit
Bit
Bit
25