RD3172MMA7455L Freescale Semiconductor, RD3172MMA7455L Datasheet - Page 28

• Manufacturer Part Number: RD3172MMA7455L
• Description: EVAL BOARD FOR MMA7455L
• Manufacturer: Freescale Semiconductor
• Series: ZSTAR3r

Specifications of RD3172MMA7455L

• Design Resources: ZSTAR3 Schematic
• Sensor Type: Accelerometer, 3 Axis
• Sensing Range: ±2g, 4g, 8g
• Interface: RF
• Sensitivity: 16, 32, 64 LSB/g
• Voltage - Supply: 3V
• Embedded: Yes, MCU, 16-Bit
• Utilized Ic / Part: MMA7455
• Acceleration: 5000 g
• Sensing Axis: Triple Axis
• Output Type: Digital
• Interface Type: I2C, SPI
• Operating Voltage: 3.6 L
• Operating Current: 490 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: MMA7455L

28
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