SCP1000 PCB3 VTI Technologies, SCP1000 PCB3 Datasheet - Page 12

• Manufacturer Part Number: SCP1000 PCB3
• Description: SENSOR I2C 30-120KPA PCB
• Manufacturer: VTI Technologies
• Series: SCP1000r

Specifications of SCP1000 PCB3

• Pressure Type: Absolute
• Operating Pressure: 4.35 ~ 17.40 PSI, 30 ~ 120 kPa
• Output: Digital
• Voltage - Supply: 2.4 V ~ 3.3 V
• Termination Style: Surface Mount
• Operating Temperature: -20°C ~ 70°C
• Package / Case: PCB Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 551-1044

2.2.3.1
VTI Technologies Oy
www.vti.fi
Examples of temperature conversion to [°C]
For more details of pressure data bit level description, see section 3.2 (Table 12). Pressure data is
presented in integer format. When operating within the nominal operation range (30…120 kPa) the
output of the SCP1000 changes between 120000 and 480000. The output is converted from
decimal format to [Pa] as follows:
Equation 1
where Pres[dec] is pressure read from SCP1000 in decimal format.
See section 3.1 (Table 13) for details more of temperature data bit level description. Temperature
data is presented in 2’s complement format and is converted from decimal format to [°C] as follows:
Equation 2
where Temp[dec] is temperature read from SCP1000 in decimal format.
In case the sign bit is zero, '0' (see Table 3), the TEMPOUT binary value is converted to decimal
value and then to [°C] as follows:
Table 3. An example TEMPOUT bit pattern of a positive temperature data.
TEMPOUT,
raw data
s = sign bit
x = not used bit
The example binary value presented in Table 3 can be converted normally to decimal value
because the sign bit is zero:
In case the sign bit is one, '1' (see Table 4), the TEMPOUT binary value is converted to decimal
value and then to [°C] as follows (notice 2’s complement format):
Table 4. An example TEMPOUT bit pattern of a negative temperature data.
TEMPOUT,
TEMPOUT,
inverted data
Add '1' (one LSB) to inverted
TEMPOUT data
Absolute value for
TEMPOUT data
s = sign bit
x = not used bit
Temp
raw data
Pres
~[°C]
~[°C]
Data
Data
bit #
bit #
Bit#
Bit#
[
[
Pa
B15
B15
°
x
x
C
]
]
=
=
B14
B14
x
x
Pres
Temp
bin '00 0010 0010 1110' → dec '558'
→ conversion to [°C]: 558/20 = 27,9 °C
B13
B13
4
20
[
s
s
0
s
s
1
0
0
dec
[
dec
204.8
204.8
]
B12
T12
B12
T12
0
1
0
0
]
=
=
. 0
102.4
102.4
. 0
B11
T11
An example TEMPOUT bit pattern for negative temperature
B11
T11
An example TEMPOUT bit pattern for positive temperature
25
0
1
0
0
05
⋅
Pres
⋅
51.2
51.2
B10
T10
B10
T10
Temp
Doc.Nr. 8260800.08
Subject to changes
0
1
0
0
[
dec
25.6
25.6
[
B9
T9
B9
T9
1
1
0
0
dec
]
,
]
12.8
12.8
B8
T8
B8
T8
0
1
0
0
6.4
6.4
B7
T7
B7
T7
0
1
0
0
3.2
3.2
B6
B6
T6
T6
0
0
1
1
1.6
1.6
B5
T5
B5
T5
1
0
1
1
0.8
0.8
B4
T4
B4
T4
0
1
0
0
0.4
0.4
B3
B3
T3
T3
1
0
1
1
B2
0.2
B2
0.2
T2
T2
1
1
0
1
0.1
0.1
B1
T1
B1
T1
1
0
1
0
SCP1000 Series
0.05
0.05
B0
T0
B0
T0
+1
0
0
1
0
Rev.0.08
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