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SP100-15 데이터시트 PDF




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부품번호 SP100-15 기능
기능 Pressure Sensor Series
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SP100-15 데이터시트, 핀배열, 회로
DATASHEET SP100 PRESSURE SENSOR SERIES
SP100-15
SP100 Pressure Sensor Series
The SP100 pressure sensors are calibrated and digitally compensated silicon piezoresistive sensors with SPI
interface. SP100-15 is part of this series, and in addition to pressure it provides temperature and supply voltage
measurements. Each sensor has a unique electronic sensor ID, and has a built in self diagnosis system. SP100-15
can easily be used in a broad range of applications and interfaces directly to a micro controller without the need of
any additional components.
SP100 series of sensors has excellent media compatibility due to a patented bulk micromachined triple stack sensor
die design, utilizing buried piezoresistive elements and backside media access to pressure diaphragm. With this
design the internal connectors and piezoresistive elements of the pressure bridge are isolated from the
measurement media. This isolation is of great importance in terms of stability and reliability of the sensor over a very
long lifetime.
The SP100 sensor design has been proven in harsh environment applications during a period of more than 10 years,
making these sensors ideal choices for demanding applications where simple solutions are needed to quickly
implement reliable and accurate pressure measurements.
SP100-15 belongs to the higher pressure range of SP100 sensors.
SP100-15
TS1482 rev. 2
-1-




SP100-15 pdf, 반도체, 판매, 대치품
1 Product Description
1.1 Features
o 0 to 1500kPa absolute pressure sensor
o Fully digitized and compensated over pressure and temperature
o -40 to 125degC temperature operating range
o SPI interface
o Sensor self diagnosis
o Unique electronic sensor IDs
o High reliability over long lifetime (10 years and above)
o 0.3µA standby current
o High media compatibility (automotive qualified)
o Additional temperature and supply voltage measurements
o Robust miniature surface mount package
o No external components required
1.2 Overview
SP100-15 is an integrated MEMS pressure sensor designed and qualified for air pressure measurements. The
sensor has a digital interface designed for use in microcontroller applications. SP100-15 is housed is a 14 pin
small outline package, and requires no external components.
Switches
Vdd
Pressure
sensor
Input
multiplexer
and S/H
ADC
Temperature sensor
Supply voltage sensor
Figure 1.1 SP100-15 block diagram
Calibration
OTP
Calibration
data and ID
Timer
Wake Up
Reset
Digital SPI
interface link
NCS
SCLK
SDI
SDO
Vpp
Vss
TS1482 rev. 2
-4-

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SP100-15 전자부품, 판매, 대치품
5 Wake-Up and Reset Outputs
The product provides two outputs, which may be used to interrupt or reset a microcontroller. Each output provides a
pulse at regular intervals. The “wake-up and reset” are active low outputs. The Wake Up period is programmable
from 1 to 256 seconds, in 1 second intervals. The command to set this is found in the table of chapter 6.2.
Table 5.1 Wake-up and reset outputs
Parameter
Wake Up Width
Reset period
Reset width
Interval timing drift over temperature 1)
Interval timing drift over supply voltage 1)
Min
0.13
0.13
Typ
51
0.6
-15
Max
2.5
2.5
1
-40
Unit
ms
min
ms
%/°C
%/V
Notes:
1)
The product has two oscillators: One low-power oscillator, which runs at about 2.5 kHz and is used for interval timing, and a 2 MHz
oscillator used for measurements and data transmission. Due to its very low current consumption, the low-power oscillator is sensitive to
temperature and supply voltage variation. To keep the interval lengths constant under different conditions, the low-power oscillator is
compared to the 2 MHz oscillator during each measurement, and a correction is applied to the interval count. This operation is called an
auto calibration. The stability of the interval depends on the change in temperature or supply voltage since the last measurement.
6 Serial Interface
The SPI interface is the communication protocol to the external microcontroller. This maximum serial clock frequency
is 500 kHz.
The SPI consists of a shift register, a command latch and failure latches, and encoder/decoder logic.
6.1 SPI Protocol
When NCS is high, any signals at the SCLK and SDI pins are ignored, and SDO is forced into a high impedance
state.
During the NCS high-to-low transition, the SPI response word is multiplexed from the latch(es) that was(were)
defined by the last command present in the shift register. The SCLK pin must be low when NCS goes low.
At each clock rising edge after NCS has gone low, the response word is serially shifted out of the ASIC at the
SDO pin, LSB first. At each clock falling edge after NCS has gone low, the new control word is serially shifted into
the ASIC at the SDI pin, LSB first.
The command bits of the received SPI word are then decoded to determine the destination address for the data
bits. After the 8th clock falling edge has occurred, the following NCS low-to-high transition causes the data bits
stored in the ASIC SPI shift register to be transferred into the latch which address was decoded from the SPI shift
register command bits.
If the number of clock pulses before NCS goes high is different from 0, 8 or 16, a digital filter prevents execution of
the received command. Also to notice; A valid NCS pulse with 0 clock pulses will cause the previous command to
be executed again.
A Failure Status Indicator (FSI) is a logical OR of all bits in the status register, except for bit 6. However, for
SP100-15 the FSI indication should be ignored.
To validate P, T and V measurements for SP100-15 the Status register should be checked. This is done by
executing the RSR command after each measurement and evaluating the content. The corresponding
measurement result should be rejected if, and only if, the status register indicates an error. Status bits of interest
for measurement validity are all except bit 5 and 6 (see more in chapter 6.4).
TS1482 rev. 2
-7-

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