SCP1000 PCB1 VTI Technologies, SCP1000 PCB1 Datasheet - Page 11

• Manufacturer Part Number: SCP1000 PCB1
• Description: SENSOR SPI 30-120KPA PCB
• Manufacturer: VTI Technologies
• Series: SCP1000r

Specifications of SCP1000 PCB1

• 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: 551-1042

2.2.2.1
2.2.3
VTI Technologies Oy
www.vti.fi
Figure 6. SCP1000 measurement mode selection.
Reading the pressure and temperature
Switching between measurement modes
In order to switch between the measurement modes, it is necessary first to stop the active mode
before activating the new one by writing 0x00 in to OPERATION register. This will instruct
SCP1000 to cancel the current operation (SCP1000 enters in to standby mode). After writing 0x00
to OPERATION register and before new measurement mode is activated there should be a 50 ms
delay. Instead of the 50 ms delay, OPSTATUS register can be read. If OPSTATUS bit in
OPSTATUS register is ‘0’, new measurement mode can be activated as described in section 2.2.2
above (see Figure 6).
In order to avoid a real time error, it is strongly recommended to verify that the DRDY signal is low
(no new data) before activating new mode. If DRDY is high it is necessary to read the output data
before activating new measurement mode.
After the DRDY pin has signaled the availability of new measurement data, it is recommended that
the output data is read immediately in the following order:
o
o
o
read the TEMPOUT register (temperature data in bits [13:0] – in case the temperature data
is not needed this step can be omitted).
read the DATARD8 register (bits [2:0] contain the MSB of the pressure data)
read the DATARD16 register (contains the 16 LSB of the pressure data)
Doc.Nr. 8260800.08
Subject to changes
M1)
M2)
M3)
For details for low power
mode resolution please
refer to section 2.2.1.2.
For details for DRDY
signal please see Figure
4, Figure 5 and section
2.3.
See section 2.2.3 for
more details of reading
the
temperature
pressure
SCP1000 Series
Rev.0.08
and
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