RD3172MMA7455L Freescale, RD3172MMA7455L Datasheet - Page 11
RD3172MMA7455L
Manufacturer Part Number
RD3172MMA7455L
Description
Manufacturer
Freescale
Datasheet
1.RD3172MMA7455L.pdf
(35 pages)
Specifications of RD3172MMA7455L
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
RD3172MMA7455L
Manufacturer:
Freescale Semiconductor
Quantity:
135
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
11