Freescale Semiconductor FRDM-FXS-MULTI Datenbogen
MMA8652FC
Sensors
40
Freescale Semiconductor, Inc.
Figure 15. DBCNTM bit function
Table 57. FF_MT_COUNT relationship with the ODR
ODR
(Hz)
Max Time Range (s)
Time Step (ms)
Normal
LPLN
HighRes
LP
Normal
LPLN
HighRes
LP
800
0.319
0.319
0.319
0.319
1.25
1.25
1.25
1.25
400
0.638
0.638
0.638
0.638
2.5
2.5
2.5
2.5
200
1.28
1.28
0.638
1.28
5
5
2.5
5
100
2.55
2.55
0.638
2.55
10
10
2.5
10
50
5.1
5.1
0.638
5.1
20
20
2.5
20
12.5
5.1
20.4
0.638
20.4
20
80
2.5
80
6.25
5.1
20.4
0.638
40.8
20
80
2.5
160
1.56
5.1
20.4
0.638
40.8
20
80
2.5
160
High g Event on
Count Threshold
FF
FFEA
all 3-axis
(Motion Detect)
Counter
Value
High g Event on
Count Threshold
Debounce
(a)
all 3-axis
(Motion Detect)
Counter
Value
High g Event on
Count Threshold
Debounce
EA
all 3-axis
(Motion Detect)
Counter
Value
DBCNTM = 1
(b)
EA
DBCNTM = 0
(c)