MMA7455LT Freescale, MMA7455LT Datasheet - Page 11

• Manufacturer Part Number: MMA7455LT
• Manufacturer: Freescale

Specifications of MMA7455LT

• Family Name: MMA7455L
• Package Type: LGA
• Operating Supply Voltage (min): 2.4V
• Operating Supply Voltage (typ): 2.8V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 3mm
• Product Height (mm): 1mm
• Product Length (mm): 5mm
• Mounting: Surface Mount
• Pin Count: 14
• Lead Free Status / RoHS Status: 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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