MMA7455LT Freescale Semiconductor, MMA7455LT Datasheet - Page 28

• 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

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MMA7455L
The following figure shows sensing direction and the output response for 2g mode.
X
Y
Z
OUT
OUT
OUT
@ +1g = $3F
@ 0g = $00
@ 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
1
6
8
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
@ +1g = $3F
@ 0g = $00
@ 0g = $00
@ 0g = $00
@ -1g = $C1
10
4
3
11
4
3
12
9
2
5
13
6
1
8
14
7
Acceleration
+1g
+2g
+1g
+4g
+1g
+8g
-2g
-1g
-4g
-1g
-8g
-1g
0g
0g
0g
X
Y
Z
OUT
OUT
OUT
@ -1g = $C1
@ 0g = $00
@ 0g = $00
Output
$C1
$80
$00
$3F
$7F
$80
$E1
$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
Freescale Semiconductor
Side View
Bottom
@ 0g = $00
@ 0g = $00
@ +1g = $3F
Bottom
@ -1g = $C1
@ 0g = $00
@ 0g = $00
Top
Top
Sensors