MMA7456LT Freescale Semiconductor, MMA7456LT Datasheet - Page 27

• 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

$1A: Level Detection Threshold Limit Value (Read/Write)
LDTH[7:0]: Level detection threshold value. If THOPT bit in Detection Control Register is “0”, it is unsigned 7 bits value and
LDTH[7] should be “0”. If THOPT bit is “1”, it is signed 8 bits value.
$1B: Pulse Detection Threshold Limit Value (Read/Write)
PDTH[6:0]: Pulse detection threshold value (unsigned 7 bits).
XPDTH: This bit should be “0”.
$1C: Pulse Duration Value (Read/Write)
Min: PD[7:0] = 4’h01 = 0.5 ms
Max: PD[7:0] = 4’hFF = 127 ms
1 LSB = 0.5 ms
$1D: Latency Time Value (Read/Write)
Min: LT[7:0] = 8’h01 = 1 ms
Max: LT[7:0] = 8’hFF = 255 ms
1 LSB = 1 ms
$1E: Time Window for 2nd Pulse Value (Read/Write)
Min: TW[7:0] = 8’h01 = 1 ms (Single pulse detection)
Max: TW[7:0] = 8’hFF = 255 ms
1 LSB = 1 ms
Sensors
Freescale Semiconductor
LDTH[7]
XPDTH
TW[7]
PD[7]
LT[7]
D7
D7
D7
D7
D7
0
0
0
0
0
LDTH[6]
PDTH[6]
TW[6]
PD[6]
LT[6]
D6
D6
D6
D6
D6
0
0
0
0
0
LDTH[5]
PDTH[5]
PD[5]
TW[5]
LT[5]
D5
D5
D5
D5
D5
0
0
0
0
0
LDTH[4]
PDTH[4]
TW[4]
PD[4]
LT[4]
D4
D4
D4
D4
D4
0
0
0
0
0
LDTH[3]
PDTH[3]
PD[3]
TW[3]
LT[3]
D3
D3
D3
D3
D3
0
0
0
0
0
LDTH[2]
PDTH[2]
TW[2]
PD[2]
LT[2]
D2
D2
D2
D2
D2
0
0
0
0
0
LDTH[1]
PDTH[1]
PD[1]
TW[1]
LT[1]
D1
D1
D1
D1
D1
0
0
0
0
0
LDTH[0]
PDTH[0]
TW[0]
PD[0]
LT[0]
D0
D0
D0
D0
D0
0
0
0
0
0
MMA7456L
Function
Function
Function
Function
Default
Function
Default
Default
Default
Default
Bit
Bit
Bit
Bit
Bit
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