MMA7456LT Freescale Semiconductor, MMA7456LT Datasheet - Page 28

• 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

Sensors
Freescale Semiconductor
The following figure shows sensing direction and the output response for 2g mode.
X
Y
Z
OUT
OUT
OUT
@ 0g = $00
@ +1g = $3F
@ 0g = $00
* When positioned as shown, the Earth’s gravity will result in a positive 1g output.
Figure 17. Sensing Direction and Output Response at 2g Mode
14
7
SENSING DIRECTION AND OUTPUT RESPONSE
13 12 11 10
6
8
1
Table 13. Acceleration vs. Output (8-bit data)
X
Y
Z
X
Y
Z
2g Mode
4g Mode
8g Mode
OUT
OUT
OUT
OUT
OUT
OUT
5
9
2
Top View
FS Mode
@ 0g = $00
@ 0g = $00
@ +1g = $3F
@ 0g = $00
@ 0g = $00
@ -1g = $C1
10
4
3
11
3
4
12
2
9
5
13
1
8
6
14
7
Acceleration
+1g
+2g
+1g
+4g
+1g
+8g
-2g
-1g
-4g
-1g
-8g
-1g
0g
0g
0g
X
Y
Z
OUT
OUT
OUT
@ 0g = $00
@ -1g = $C1
@ 0g = $00
Output
$C1
$E1
$80
$00
$3F
$7F
$80
$00
$1F
$7F
$80
$F1
$00
$0F
$7F
Direction of Earth's gravity field.*
X
Y
Z
X
Y
Z
OUT
OUT
OUT
OUT
OUT
OUT
Side View
Bottom
@ +1g = $3F
Bottom
@ 0g = $00
@ 0g = $00
@ 0g = $00
@ 0g = $00
@ -1g = $C1
Top
Top
MMA7456L
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