MMA8453QR1 Freescale, MMA8453QR1 Datasheet - Page 32

• Manufacturer Part Number: MMA8453QR1
• Manufacturer: Freescale

Specifications of MMA8453QR1

• Lead Free Status / RoHS Status: Compliant

0x18 FF_MT_COUNT Debounce Register
selected for the freefall, motion event.
counter will never increase beyond the FF_MT_COUNT value. Time step used for the debounce sample count depends on the
ODR chosen and the Oversampling mode as shown in
Table 29. FF_MT_COUNT Description
32
0x18 FF_MT_COUNT_Register (Read/Write)
MMA8453Q
This register sets the number of debounce sample counts for the event trigger.
This register sets the minimum number of debounce sample counts of continuously matching the detection condition user
When the internal debounce counter reaches the FF_MT_COUNT value a Freefall/Motion event flag is set. The debounce
Bit 7
D7
D[7:0]
Table 30. FF_MT_COUNT Relationship with the ODR
ODR (Hz)
12.5
6.25
1.56
800
400
200
100
50
Count value. Default value: 0000_0000
Bit 6
D6
Normal
0.319
0.638
1.28
2.55
5.1
5.1
5.1
5.1
Max Time Range (s)
LPLN
0.319
0.638
1.28
2.55
20.4
20.4
20.4
5.1
Bit 5
D5
HighRes
0.319
0.638
0.638
0.638
0.638
0.638
0.638
0.638
Bit 4
D4
Table
0.319
0.638
1.28
2.55
20.4
40.8
40.8
5.1
LP
30.
Normal
Bit 3
D3
1.25
2.5
10
20
20
20
20
5
LPLN
1.25
2.5
10
20
80
80
80
5
Time Step (ms)
Bit 2
D2
HighRes
1.25
2.5
2.5
2.5
2.5
2.5
2.5
2.5
Bit 1
Freescale Semiconductor
D1
1.25
160
160
LP
2.5
10
20
80
5
Bit 0
D0
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