MMA7456LT Freescale Semiconductor, MMA7456LT Datasheet - Page 25

• Manufacturer Part Number: MMA7456LT
• Description: Board Mount Accelerometers 3-AXIS DIGTL 12C&SP1
• Manufacturer: Freescale Semiconductor
• Series: -r

Specifications of MMA7456LT

• Sensing Axis: X, Y, Z
• Acceleration: 2 g, 4 g, 8 g
• Sensitivity: 64 count/g, 32 count/g, 16 count/g
• Package / Case: LGA-14
• Output Type: Digital
• 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
• Axis: X, Y, Z
• Acceleration Range: ± 2g, 4g, 8g
• Voltage - Supply: 2.4 V ~ 3.6 V
• Bandwidth: 6kHz - XY, 3.4kHz - Z
• Interface: I²C, SPI
• Mounting Type: Surface Mount
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

$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 8bit data output. Typical value for reference only. Variation is specified in “Electrical Characteristics” section.
$16: Mode Control Register (Read/Write)
Table 10. Configuring the g-Select for 8-bit output using Register $16 with GLVL[1:0] bits
GLVL [1:0]
00: 8g is selected for measurement range.
10: 4g is selected for measurement range.
01: 2g is selected for measurement range.
MODE [1:0]
00: Standby Mode
01: Measurement Mode
10: Level Detection Mode
11: Pulse Detection Mode
Sensors
Freescale Semiconductor
D7
D7
--
0
--
0
Weight*
Bit
GLVL [1:0]
DRPD
D6
D6
00
01
10
--
0
0
Table 11. Configuring the Mode using Register $16 with MODE[1:0] bits
SPI3W
D5
D5
--
0
0
MODE [1:0]
00
01
10
11
ZOFF[10]
Polarity
STON
D4
D4
--
0
0
g-Range
GLVL[1]
D3
D3
8g
2g
4g
--
0
0
STON
0: Self-test is not enabled
1: Self-test is enabled
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
ZOFF[10]
Measurement Mode
GLVL[0]
ZOFF[9]
256 LSB
Standby Mode
D2
D2
0
0
Function
MODE[1]
ZOFF[9]
D1
D1
0
0
Sensitivity
MODE[0]
16 LSB/g
64 LSB/g
32 LSB/g
ZOFF[8]
D0
D0
0
0
128 LSB
ZOFF[8]
MMA7456L
Function
Function
Default
Default
Bit
Bit
25