KP256XTMA1

KP256XTMA1 Datasheet

Digital Absolute Pressure Sensor KP256

Part	Datasheet
KP256XTMA1	KP256XTMA1 (pdf)

Related Parts	Information
KP256XTMA2	KP256XTMA2

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Digital Absolute Pressure Sensor KP256 dBAP Digital Barometric Air Pressure Sensor IC Data Sheet KP256 Digital Absolute Pressure Sensor Table of Contents Product Description 5 Features 5 Target Applications 5 Functional Description 6 Pin Configuration 6 Pin Description 6 Block Diagram 7 Transfer Function Pressure 7 Pressure Transfer Function Characteristics 8 Accuracy 8 Transfer Function Temperature 9 Temperature Transfer Function Characteristics 9 Power-Down Mode 10 Entering Power-Down Mode 10 Exiting Power-Down Mode 10 Serial Interface 10 Commands 10 Command Behavior 11 Structure 11 Parity 12 Command Definition 12 Communication Error 13 Identifier Response Definition 13 Single Device Operation 14 Daisy Chain Operation 15 Start-up Behavior 16 Diagnosis 16 Diagnostic Reset 17 Reset-bit C12 = ‘0‘ 17 Reset-bit C12 = ‘1‘ 17 Pressure out of Range 18 Diag1 18 Diag2 18 E2PROM Check 19 Specification 20 Application Circuit Example 20 Absolute Maximum Ratings 21 Operating Range 22 Characteristics 23 Package Information 26 PG-DSOF-8-16 Outline 26 Identification Code 27 Data Sheet KP256 Digital Absolute Pressure Sensor List of Tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Pin description 6 Pressure transfer function characteristics 8 Temperature transfer function characteristics 9 Diagnosis codes 17 Component values 20 Absolute maximum ratings 21 Operating range 22 Electrical characteristics 23 SPI timing 24 Transfer function 25 Data Sheet KP256 Digital Absolute Pressure Sensor List of Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Pin configuration top view, figure not to scale 6 Functional block diagram 7 Pressure transfer function. 7 Accuracy for pressure acquisition 8 Temperature transfer function VDD = V 9 SPI timing 10 SPI command structure 11 SPI response structure 11 SPI response structure for identifier 12 Acquire pressure command 12 Acquire temperature command. 12 Trigger power-down command 12 Trigger diagnosis command 12 Acquire identifier command 13 Trigger test mode command 13 Response after a communication error 13 Identifier response definition 13 Example for single device operation 14 Example for single device signal timing 14 Example for daisy chain operation 15 Example for daisy chain signal diagram. 16 Example for reset strategy Reset-bit C12 = 17 Example for reset strategy Reset-bit C12 = 18 Diag1 functionality 18 Diag2 functionality 19 Application circuit example 20 Package outline 26 Identification code 27 Data Sheet KP256 Digital Absolute Pressure Sensor Product Description The KP256 is a miniaturized Digital Barometric Air Pressure Sensor IC based on a capacitive principle. It is surface micromachined with a monolithic integrated signal conditioning circuit implemented in BiCMOS technology. The sensor converts a pressure into a 10-bit digital value and sends the information via the SPI interface. In addition, a temperature sensor is integrated on chip. Based on the received SPI command, the 10-bit temperature information will be transmitted via the SPI interface. A special reliability feature is the integrated diagnostic mode, which allows testing the sensor cells as well as the signal path. This diagnosis can be simply triggered with a SPI command. PG-DSOF-8-16 The chip is packaged in a “green” SMD housing. The sensor has been primarily developed for measuring barometric air pressure, but can also be used in other application fields. The high accuracy, high sensitivity and reliability features of the device makes it a perfect fit for advanced automotive applications as well as in industrial and consumer applications. The following features are supported by the KP256 • High accuracy pressure sensing ± kPa • Real 10-bit pressure resolution • Integrated temperature sensor Ordering Code SP001399098 Package PG-DSOF-8-16 KP256 Digital Absolute Pressure Sensor Functional Description Functional Description Pin Configuration Figure 1 shows the pin configuration. NCS 1 CLK 2 SDI 3 SDO 4 8 GND VPROG 5 VDD Figure 1 Pin configuration top view, figure not to scale Pin Description Table 1 shows the pin description. Table 1 Pin No. 1 2 3 4 5 6 7 8 Pin description Name Function Not-Chip-Select active-low Serial Clock Serial Data In Serial Data Out VDD VPROG NC Supply voltage Programming Voltage Not Connected Ground Comment Communication is enabled when NCS is low External clock for serial communication Serial data input e.g. from a controller Tri-state serial data output Only required during E2PROM programming Pin is not bonded Data Sheet KP256 Digital Absolute Pressure Sensor Functional Description Block Diagram Figure 2 shows the functional block diagram. Pressure Cells Normal Mode/ Diagnosis Mode Temperature Sensor Temperature Compensation VDD GND Voltage analog Regulator digital Reset VDDA VDDD Figure 2 Functional block diagram Digital Signal Processing Design improvement, new ordering code and marking Data Sheet

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Digital Absolute Pressure Sensor KP256
dBAP

Digital Barometric Air Pressure Sensor IC

Data Sheet

KP256 Digital Absolute Pressure Sensor

Table of Contents

Product Description 5

Features 5

Target Applications 5

Functional Description 6 Pin Configuration 6 Pin Description 6 Block Diagram 7 Transfer Function Pressure 7

Pressure Transfer Function Characteristics 8 Accuracy 8 Transfer Function Temperature 9 Temperature Transfer Function Characteristics 9 Power-Down Mode 10 Entering Power-Down Mode 10 Exiting Power-Down Mode 10 Serial Interface 10 Commands 10

Command Behavior 11 Structure 11 Parity 12 Command Definition 12 Communication Error 13 Identifier Response Definition 13 Single Device Operation 14 Daisy Chain Operation 15 Start-up Behavior 16 Diagnosis 16 Diagnostic Reset 17 Reset-bit C12 = ‘0‘ 17 Reset-bit C12 = ‘1‘ 17 Pressure out of Range 18 Diag1 18 Diag2 18 E2PROM Check 19

Specification 20

Application Circuit Example 20

Absolute Maximum Ratings 21

Operating Range 22

Characteristics 23

Package Information 26

PG-DSOF-8-16 Outline 26

Identification Code 27

Data Sheet

KP256 Digital Absolute Pressure Sensor

List of Tables

Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10

Pin description 6 Pressure transfer function characteristics 8 Temperature transfer function characteristics 9 Diagnosis codes 17 Component values 20 Absolute maximum ratings 21 Operating range 22 Electrical characteristics 23 SPI timing 24 Transfer function 25

Data Sheet

KP256 Digital Absolute Pressure Sensor

List of Figures

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28

Pin configuration top view, figure not to scale 6 Functional block diagram 7 Pressure transfer function. 7 Accuracy for pressure acquisition 8 Temperature transfer function VDD = V 9 SPI timing 10 SPI command structure 11 SPI response structure 11 SPI response structure for identifier 12 Acquire pressure command 12 Acquire temperature command. 12 Trigger power-down command 12 Trigger diagnosis command 12 Acquire identifier command 13 Trigger test mode command 13 Response after a communication error 13 Identifier response definition 13 Example for single device operation 14 Example for single device signal timing 14 Example for daisy chain operation 15 Example for daisy chain signal diagram. 16 Example for reset strategy Reset-bit C12 = 17 Example for reset strategy Reset-bit C12 = 18 Diag1 functionality 18 Diag2 functionality 19 Application circuit example 20 Package outline 26 Identification code 27

Data Sheet

KP256 Digital Absolute Pressure Sensor

Product Description

The KP256 is a miniaturized Digital Barometric Air Pressure Sensor IC based on a capacitive principle. It is surface micromachined with a monolithic integrated signal conditioning circuit implemented in BiCMOS technology.

The sensor converts a pressure into a 10-bit digital value and sends the information via the SPI interface. In addition, a temperature sensor is integrated on chip. Based on the received SPI command, the 10-bit temperature information will be transmitted via the SPI interface.

A special reliability feature is the integrated diagnostic mode, which allows testing the sensor cells as well as the signal path. This diagnosis can be simply triggered with a SPI command.

PG-DSOF-8-16

The chip is packaged in a “green” SMD housing. The sensor has been primarily developed for measuring barometric air pressure, but can also be used in other application fields. The high accuracy, high sensitivity and reliability features of the device makes it a perfect fit for advanced automotive applications as well as in industrial and consumer applications.

The following features are supported by the KP256
• High accuracy pressure sensing ± kPa
• Real 10-bit pressure resolution
• Integrated temperature sensor
Ordering Code SP001399098

Package PG-DSOF-8-16

KP256 Digital Absolute Pressure Sensor

Functional Description

Functional Description

Pin Configuration

Figure 1 shows the pin configuration.

NCS 1 CLK 2 SDI 3 SDO 4
8 GND

VPROG
5 VDD

Figure 1 Pin configuration top view, figure not to scale

Pin Description

Table 1 shows the pin description.

Table 1 Pin No. 1 2 3 4 5 6 7 8

Pin description

Name

Function

Not-Chip-Select active-low

Serial Clock

Serial Data In

Serial Data Out

VDD VPROG NC

Supply voltage Programming Voltage Not Connected

Ground

Comment Communication is enabled when NCS is low External clock for serial communication Serial data input e.g. from a controller Tri-state serial data output Only required during E2PROM programming Pin is not bonded

Data Sheet

KP256 Digital Absolute Pressure Sensor

Functional Description

Block Diagram

Figure 2 shows the functional block diagram.

Pressure Cells

Normal Mode/ Diagnosis Mode

Temperature Sensor

Temperature Compensation

VDD GND

Voltage analog Regulator digital

Reset

VDDA VDDD

Figure 2 Functional block diagram

Digital Signal Processing
Design improvement, new ordering code and marking

Data Sheet

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived KP256XTMA1 Datasheet file may be downloaded here without warranties.

Datasheet ID: KP256XTMA1 638386