D3172MMA7361LC Freescale Semiconductor, D3172MMA7361LC Datasheet - Page 11

• Manufacturer Part Number: D3172MMA7361LC
• Description: Acceleration Sensor Development Tools XYZ-AXIS DIGITAL ACCEL D
• Manufacturer: Freescale Semiconductor

Specifications of D3172MMA7361LC

• Acceleration: 1.5 g
• Sensing Axis: Triple Axis
• Output Type: Digital
• Interface Type: I2C, SPI
• Operating Voltage: 2 V to 3.4 V
• Operating Current: 47 uA
• Sensitivity: 64 LSB/g
• For Use With/related Products: MMA7660FC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

THRESHOLD DETECTION FOR MOTION AND FREEFALL CONDITIONS
CASE 1: Motion Detection
Integer Value: X >Threshold OR Y >Threshold OR Z > Threshold
Reg $18 THOPT=1; Reg 19 LDPL=0, Set Threshold to 3g, which is 47 counts (16 counts/g). Set register $1A LDTH = $2F.
CASE 2: Motion Detection
Absolute: ||X|| > Threshold OR ||Y|| >Threshold OR ||Z|| > Threshold
Reg $18 THOPT=0; Reg 19 LDPL=0, Set Threshold to 3g, which is 47 counts (16 counts/g). Set register $1A LDTH = $2F.
CASE 3: Freefall Detection
Integer Value: X < Threshold AND Y < Threshold AND Z <Threshold
Reg $18 THOPT=1; Reg 19 LDPL=1, Set Threshold to 0.5g, which is 7 counts (16 counts/g). Set register $1A LDTH = $07
CASE 4: Freefall Detection
Absolute: ||X|| <Threshold AND ||Y|| < Threshold AND ||Z||< Threshold
Reg $18 THOPT=0; Reg 19 LDPL=1, Set Threshold to +/-0.5g, which is 7 counts (16 counts/g). Set register $1A LDTH = $07.
Sensors
Freescale Semiconductor
TH = $2F
TH = $2F
TH = $D1
TH = $07
TH = $07
TH = $F9
MMA7455L
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