PMMA7450LR2 Freescale Semiconductor, Inc, PMMA7450LR2 Datasheet - Page 20

• Manufacturer Part Number: PMMA7450LR2
• Description: ?2g/?4g/?8g Three Axis Low-g Digital Output Accelerometer
• Manufacturer: Freescale Semiconductor, Inc

output response for 2g mode.
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MMA7450L
The following figure shows sensing direction and the
X
Y
Z
OUT
OUT
OUT
@ +1g = 2.45 V
@ 0g = 1.65 V
@ 0g = 1.65 V
* 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
Table 8. Acceleration vs. Output
6
8
1
2g Mode
4g Mode
8g Mode
X
Y
Z
X
Y
Z
OUT
OUT
OUT
OUT
OUT
OUT
5
9
2
FS Mode
Top View
@ 0g = 1.65 V
@ 0g = 1.65 V
@ +1g = 2.45 V
@ 0g = 1.65 V
@ 0g = 1.65 V
@ -1g = 0.85 V
10
4
3
11
4
3
12
2
9
5
13
1
8
6
14
Acceleration
7
+1g
+2g
+1g
+4g
+1g
+8g
-2g
-1g
-4g
-1g
-8g
-1g
0g
0g
0g
X
Y
Z
OUT
OUT
OUT
@ 0g = 1.65 V
@ -1g = 0.85 V
@ 0g = 1.65 V
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
Freescale Semiconductor
Bottom
@ +1g = 2.45 V
Bottom
@ 0g = 1.65 V
@ 0g = 1.65 V
@ -1g = 0.85 V
@ 0g = 1.65 V
@ 0g = 1.65 V
Top
Top
Sensors