SCA21X0 VTI [VTI technologies], SCA21X0 Datasheet - Page 15

• Manufacturer Part Number: SCA21X0
• Description: VTI Automotive Digital Accelerometer Platform
• Manufacturer: VTI [VTI technologies]

3.1.4.2
s = sign bit
x = not used/defined bit
*) = positive/negative full-scale or saturation limit of ±6 g product is 6.3 g.
3.1.4.3
s = sign bit
Acceleration bits can be converted to mg acceleration (Acc) using following equation
3.1.5
3.1.5.1
VTI Technologies Oy
www.vti.fi
+/-6g product
Bit number
SCA8x0
+1g position
-1g position
+Full-scale
-Full-scale
+/-6g product
Bit number
SCA31x0/SCA21x0
+1g position
-1g position
+Full-scale *)
-Full-scale *)
+/-1g product
Bit number
SCA8xx
+1g position
-1g position
+Full-scale
-Full-scale
Acc
Acc
Acc
[ ]
[ ]
[ ]
mg
mg
mg
Temperature output
=
=
=
6 g products
1 g products
Temperature Register Low (TEMP_LSB)
1000
1000
32
325
650
1
⎡
⎢
⎢
⎣
DOUT MSB bits(7:0)
DOUT MSB bits(7:0)
−
+
15
15
DOUT MSB bits(7:0)
In SCA8X0 acceleration bits can be converted to mg acceleration (Acc) using following equation
and in SCA21X0/SCA31X0
Address: 12h
s
0
1
0
1
0
1
0
1
s
[
⎡
⎢
⎢
⎣
15
−
s
b
Bits
7:0
s
0
1
0
1
−
+
2
⋅
s
2
b
s
3150.8
6301.5
⋅
⋅
15
9
⋅
2
14
14
2
512,0
0
1
1
0
0
1
0
1
2
3
11
⋅
14
1
0
1
0
+
13
2
+
+
b
7
+
b
14
b
+
1
1575.4
3150.8
14
b
⋅
b
14
13
13
256,0
⋅
0
1
0
1
1
0
1
0
2
8
13
2
Mode
R
⋅
1
0
1
0
1
2
⋅
14
⋅
+
2
10
2
+
6
b
12
+
1575.4
787.7
0
+
b
12
12
128,0
+
b
13
1
0
1
0
0
1
1
0
b
12
13
1
0
1
0
b
7
13
⋅
⋅
⋅
2
2
2
13
393.8
787.7
⋅
9
5
Initial
Value
00h
11
11
2
0
1
1
0
1
0
1
0
64,0
+
+
11
+
11
1
0
1
0
b
b
b
+
12
12
6
b
196.9
393.8
⋅
12
⋅
⋅
10
10
2
1
0
1
0
0
1
1
0
2
2
32,0
4
10
8
1
0
1
0
12
⋅
+
+
2
+
10
b
b
Doc. Nr. 82 694 00 C
196.9
Name
DATA
98.5
11
b
5
9
0
1
1
0
9
1
0
1
0
+
11
16,0
⋅
⋅
2
9
0
1
1
0
b
2
⋅
11
3
2
7
49.2
98.5
+
11
+
⋅
8
0
1
1
0
8
0
1
1
0
2
b
8,0
b
+
8
1
1
1
0
4
9
10
DOUT LSB bits(7:0)
DOUT LSB bits(7:0)
b
⋅
+
10
24.6
49.2
2
⋅
DOUT LSB bits(7:0)
7
0
1
1
0
7
0
1
1
0
b
4,00
2
2
10
⋅
Description
Data bits [7:0] of temperature sensor.
Read always TEMP_MSB prior to TEMP_LSB.
7
0
0
1
0
6
+
2
+
10
⋅
b
12.31
2
24.6
b
3
6
1
0
1
0
6
0
1
1
0
+
9
8
2,00
⋅
2
6
0
0
1
0
⋅
b
2
9
+
5
⋅
6.15
12.3
b
+
2
5
0
1
1
0
5
1
0
1
0
2
1,00
9
b
⎤
⎥
⎥
⎦
5
0
0
1
0
8
+
,
⋅
b
3.08
6.15
2
4
1
1
1
0
4
0
1
1
0
8
4
0,50
⋅
4
0
0
1
0
+
2
b
8
3.08
7
+
3
x
x
x
x
x
3
1
1
1
0
0,25
⋅
b
2
3
0
0
1
0
7
3
1.54
+
⋅
2
2
0
0
1
0
x
x
x
x
x
2
0,13
b
7
2
0
0
1
0
6
+
⋅
2
b
1
x
x
x
x
x
1
x
x
x
x
x
0,06
2
6
SCA8X0/21X0/3100 Series
1
0
0
1
0
+
⋅
2
b
6
0
x
x
x
x
x
0
x
x
x
x
x
5
0,03
+
⋅
0
0
0
1
0
2
b
-1000
-6302
-1000
-6302
1000
6300
1000
6300
[mg]
[mg]
+
5
[-]
[-]
-1000
-1024
1000
1023
b
[mg]
⋅
[-]
2
4
5
]
Bits (15:4) Bits (15:4)
Bits (15:2) Bits (15:2)
+
-2048
-4096
[Dec]
[Dec]
2047
4095
-325
-650
Bits (15:0)
12b
325
650
b
-32000
-32768
32000
32767
[Dec]
4
16b
⋅
15/35
2
4
+
[Hex]
[Hex]
3D76
3000
EBB
7FF
28A
FFF
12b
145
800
b
3
⋅
2
4
⎤
⎥
⎥
⎦