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MMA7455LR1 Datasheet(PDF) 21 Page - Freescale Semiconductor, Inc

Part # MMA7455LR1
Description  Three Axis Low-g Digital Output Accelerometer
PDF  27 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MMA7455LR1 Datasheet(HTML) 21 Page - Freescale Semiconductor, Inc

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Sensors
Freescale Semiconductor
21
MMA7455L
SENSING DIRECTION AND OUTPUT RESPONSE
The following figure shows sensing direction and the
output response for 2g mode.
Figure 18. Sensing Direction and Output Response at 2g Mode
Table 7. Acceleration vs. Output
FS Mode
Acceleration
Output
2g Mode
-2g
$80
-1g
$C1
0g
$00
+1g
$3F
+2g
$7F
4g Mode
-4g
$80
-1g
$E1
0g
$00
+1g
$1F
+4g
$7F
8g Mode
-8g
$80
-1g
$F1
0g
$00
+1g
$0F
+8g
$7F
Side View
X
OUT
@0g=$00
Y
OUT
@ +1g = $3F
Z
OUT
@0g=$00
X
OUT
@ +1g = $3F
Y
OUT
@0g=$00
Z
OUT
@0g=$00
X
OUT
@ -1g = $C1
Y
OUT
@0g=$00
Z
OUT
@ 0g = $00
1
6
5432
13
12
11
10
9
8
14
7
X
OUT
@0g=$00
Y
OUT
@ -1g = $C1
Z
OUT
@0g=$00
Direction of Earth's gravity field.*
Top View
X
OUT
@0g=$00
Y
OUT
@0g=$00
Z
OUT
@ -1g = $C1
X
OUT
@0g=$00
Y
OUT
@0g=$00
Z
OUT
@ +1g = $3F
16
5
4
3
2
13 12 11 10
9
8
14
7
Top
Top
Bottom
Bottom
* When positioned as shown, the Earth’s gravity will result in a positive 1g output.



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