MMA7456LT Freescale Semiconductor, MMA7456LT Datasheet - Page 4

• 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

List of Tables
Pin Descriptions ............................................................................................................................................................................5
Maximum Ratings .........................................................................................................................................................................6
Operating Characteristics .............................................................................................................................................................7
Function Parameters for Detection ...............................................................................................................................................8
$16: Mode Control Register (Read/Write) ....................................................................................................................................9
Configuring the g-Select for 8-bit output using Register $16 with GLVL[1:0] bits .........................................................................9
Configuring the Mode using Register $16 with MODE[1:0] bits ...................................................................................................9
THOPT = 0 Absolute; THOPT = 1 Positive Negative .................................................................................................................10
$1B: Pulse Detection Threshold Limit Value (Read/Write) .........................................................................................................12
$1C: Pulse Duration Value (Read/Write) ....................................................................................................................................12
$1B: Pulse Detection Threshold Limit Value (Read/Write) .........................................................................................................13
$1D: Latency Time Value (Read/Write) ......................................................................................................................................13
$1B: Pulse Detection Threshold Limit Value (Read/Write) .........................................................................................................14
$1C: Pulse Duration Value (Read/Write) ....................................................................................................................................14
$1D: Latency Time Value (Read/Write) ......................................................................................................................................14
$1E: Time Window for 2nd Pulse Value (Read/Write) ................................................................................................................14
$18 Control 1 Register ................................................................................................................................................................15
Configuring the Interrupt settings using Register $18 with INTREG[1:0] bits .............................................................................15
$17: Interrupt Latch Reset (Read/Write) .....................................................................................................................................15
$0A: Detection Source Register (Read only) ..............................................................................................................................16
Pin Descriptions ..........................................................................................................................................................................19
User Register Summary .............................................................................................................................................................21
$00: 10bits Output Value X LSB (Read only) .............................................................................................................................21
$01: 10bits Output Value X MSB (Read only) ............................................................................................................................22
$02: 10bits Output Value Y LSB (Read only) .............................................................................................................................22
$03: 10bits Output Value Y MSB (Read only) ............................................................................................................................22
$05: 10bits Output Value X MSB (Read only) ............................................................................................................................22
$06: 8bits Output Value X (Read only) .......................................................................................................................................22
$07: 8bits Output Value Y (Read only) .......................................................................................................................................22
$08: 8bits Output Value Z (Read only) .......................................................................................................................................23
$09: Status Register (Read only) ...............................................................................................................................................23
$0A: Detection Source Register (Read only) ..............................................................................................................................23
$0D: I2C Device Address (Bit 6-0: Read only, Bit 7: Read/Write) ..............................................................................................23
$0E: User Information (Read Only: Optional) .............................................................................................................................23
$0F: “Who Am I” Value (Read only: Optional) ............................................................................................................................24
$10: Offset Drift X LSB (Read/Write) ..........................................................................................................................................24
$11: Offset Drift X MSB (Read/Write) .........................................................................................................................................24
$12: Offset Drift Y LSB (Read/Write) ..........................................................................................................................................24
$13: Offset Drift Y MSB (Read/Write) .........................................................................................................................................24
$14: Offset Drift Z LSB (Read/Write) ..........................................................................................................................................24
$15: Offset Drift Z MSB (Read/Write) .........................................................................................................................................25
$16: Mode Control Register (Read/Write) ..................................................................................................................................25
Configuring the g-Select for 8-bit output using Register $16 with GLVL[1:0] bits .......................................................................25
Configuring the Mode using Register $16 with MODE[1:0] bits .................................................................................................25
$17: Interrupt Latch Reset (Read/Write) .....................................................................................................................................26
$18 Control 1 (Read/Write) .........................................................................................................................................................26
Configuring the Interrupt settings using Register $18 with INTREG[1:0] bits .............................................................................26
$1A: Level Detection Threshold Limit Value (Read/Write) .........................................................................................................27
$1B: Pulse Detection Threshold Limit Value (Read/Write) .........................................................................................................27
$1C: Pulse Duration Value (Read/Write) ....................................................................................................................................27
$1D: Latency Time Value (Read/Write) ......................................................................................................................................27
$1E: Time Window for 2nd Pulse Value (Read/Write) ................................................................................................................27
Acceleration vs. Output (8-bit data) ............................................................................................................................................28
Sensors
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MMA7456L
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