bmp180.pdfbmp180 传感器开发文档，非常不错的。The BMP180 is the f

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详细说明：bmp180 传感器开发文档，非常不错的。The BMP180 is the function compatible successor of the BMP085, a new generation of high precision digital pressure sensors for consumer applications. The ultra-low power, low voltage electronics of the BMP180 is optimized for use in mobile phones, PDAs, GPS navigation devices and outdoor equipment. With a low altitude noise of merely 0.25m at fast conversion time, the BMP180 offers superior performance. The I2C interface allows for easy system integration with a microcontroller.( D BOSCH Data sheet Page 3 BMP180 BMP180 general description The BMP180 is the function compatible successor of the BMP085, a new generation of high precision digital pressure sensors for consumer applications The ultra-low power, low voltage electronics of the bMP180 is optimized for use in mobile phones PDAS, GPS navigation devices and outdoor equipment. with a low altitude noise of merely 0. 25m at fast conversion time, the BMP180 offers superior performance. The c interface allows for easy system integration with a microcontroller The BMP180 is based on piezo-resistive technology for EMC robustness, high accuracy and linearity as well as long term stability Robert Bosch is the world market leader for pressure sensors in automotive applications. Based on the experience of over 400 million pressure sensors in the field the bmp180 continues a new generation of micro-machined pressure sensors BST-BMP180-DS000-08 Revision 2.4 January 2012 Bosch sensortec c Bosch Sensortec gmbH reserves all rights even in the event of industrial property We reserve all rights of disposal such as copying and passing on to third parties. BOSCh and the symbol are registered trademarks of robert Bosch GmbH, Germany Note: Specifications within this document are subject to change without notice ( D BOSCH Data sheet age BMP180 Index of contents 1. ELECTRICAL CHARACTERISTICS 曲看击曲曲鲁由t由曲曲曲击由看曲曲自盘由鲁曲由 6 2. ABSOLUTE MAXIMUM RATINGS.mmmm...8 3. OPERATION∴9 3.1 GENERAL DESCRIPTION 鲁鲁····。自。自,,。。非非自自非日鲁鲁·鲁自非非非。非非 3.2 GENERAL FUNCTION AND APPLICATION SCHEMATICS 3. 3 MEASUREMENT OF PRESSURE AND TEMPERATURE ……………111 3.3.1 Hardware pressure sampling accuracy modes…….….…,,…,,……,…,…,…,12 3.3.2 Software pressure sampling accuracy modes .13 3. 4 CALIBRATION COEFFICIENTS 13 3.5 CALCULATING PRESSURE AND TEMPERATURE 3.6 CALCULATING ABSOLUTE ALTITUDE, ........................................................................15 3.7 CALCULATING PRESSURE AT SEA LEVEL∴……………… 17 4. GLOBAL MEMORY MAPm..mmmm.18 5. 12C INTERFACE 19 5.1 12C SPECIFICATION 19 5.2 DEVICE AND REGISTER ADDRESS ··· 5.3 12C PROTOCOL ·.·.····································································· 20 5.4 START TEMPERATURE AND PRESSURE MEASUREMENT……………21 5.5 READ AD CONVERSION RESULT OR E PROM DATA 22 6. PACKAGE……23 6.1 PIN CONEIGURATION 23 6.2 OUTLINE DIMENSIONS 24 6.2.1 Bottom view..………24 6.2.2 Top view..…… 看 25 6.2. 3 Side view 25 6.3 MOISTURE SENSITⅣV| TY LEVEL AND SOLDERING……26 64 ROHS COMPLIANCY…,…………26 6.5 MOUNTING AND ASSEMBLY RECOMMENDATIONS 26 7. LEGAL DISCLAIMER 27 BST-BMP180-DS000-08 Revision 2.4 January 2012 Bosch sensortec c Bosch Sensortec gmbH reserves all rights even in the event of industrial property We reserve all rights of disposal such as copying and passing on to third parties. BOSCh and the symbol are registered trademarks of robert Bosch GmbH, Germany Note: Specifications within this document are subject to change without notice ( D BOSCH Data sheet Page 5 BMP180 7.1 ENGINEERING SAMPLES 27 7.2 PRODUCT USE… 27 7. 3 APPLICATION EXAMPLES AND HINTS 27 8. dOCUMENT HISTORY AND MODIFICATIONmmmammmmsmmmsmmammmmsmmmmm. 28 BST-BMP180-DS000-08 Revision 2.4 January 2012 Bosch sensortec c Bosch Sensortec gmbH reserves all rights even in the event of industrial property We reserve all rights of disposal such as copying and passing on to third parties. BOSCh and the symbol are registered trademarks of robert Bosch GmbH, Germany Note: Specifications within this document are subject to change without notice ( D BOSCH Data sheet Page 6 BMP180 1. Electrical characteristics If not stated otherwise, the given values are +3-Sigma values over temperature/voltage range in the given operation mode. All values represent the new parts specification additional solder drift is shown separately. Table 1: Operating conditions, output signal and mechanical characteristics Parameter Symbol Condition Mir Typ Max Units operationa 8 Operating temperature n00 full accuracy +65 DD ripple max. 50mvpp 1.8 2536V Supply voltage 1622536 IDDLoW ultra low power mode A DDSTD standard mode HA Supply current a 1 sample/sec DHR high resolution mode HA 25°C DDUHR 川 tra high res.mode 12 HA IDDAR Advanced res. mode 32 HA Peak current peak during conversion 650 1000 HA Standby current DDSBM 25°C 0.1 A 950...1050hPa ±0.12 hPa Relative accuracy 25°C ±1.0 pressure VDD =3.3V 700.900hP 0.12 hPa 25...40° ±1.0 300...1100hPa Absolute accuracy 0...+65°C 4.0 -1.0 +2.0 h Pa pressure VDD =3.3V 300 1100 hPa -6.0 -1.0 4.5 hPa Resolution of pressure 0.01 hPa output data temperature 0.1 Noise in pressure see table on page 12-13 Absolute accuracy 259-15±0.5+15C temperature 3.3V 0...+65°C -2.0 ±1.0 +2.0 C Conversion time ultra low power mode 34.5 ms BST-BMP180-DS000-08 Revision 2.4 January 2012 Bosch sensortec c Bosch Sensortec gmbH reserves all rights even in the event of industrial property We reserve all rights of disposal such as copying and passing on to third parties. BOSCh and the symbol are registered trademarks of robert Bosch GmbH, Germany Note: Specifications within this document are subject to change without notice ( D BOSCH Data sheet Page 7 BMP180 pressure standard mode 5 7.5 ms p h high resolution mode 9 13.5 ms luh ultra high res. mode 17 255 ms p ar Advanced res. mode 51 76.5 ms Conversion time te temp standard mode 4 temperature ms Serial data clock CL 3.4 MHZ Solder drifts Minimum solder height 50um 0.5 2 hPa Long term stability 12 months ±10 hPa The typical value is: -1+1 X* Long term stability is specified in the full accuracy operating pressure range..65C BST-BMP180-DS000-08 Revision 2.4 January 2012 Bosch sensortec c Bosch Sensortec gmbH reserves all rights even in the event of industrial property We reserve all rights of disposal such as copying and passing on to third parties. BOSCh and the symbol are registered trademarks of robert Bosch GmbH, Germany Note: Specifications within this document are subject to change without notice ( D BOSCH Data sheet Page 8 BMP180 2. Absolute maximum ratings Table 2: Absolute maximum ratings Parameter Condition Min Max Units Storage temperature 0 +85 °C Supply voltage all pins 0.3 +4.25 ESD rating HBM.R=1.5kQ kV C=100pF Overpressure 10,000 hPa The BMP180 has to be handled as electrostatic sensitive device (eSd) Figure 1: ESD BST-BMP180-DS000-08 Revision 2.4 January 2012 Bosch sensorter c Bosch Sensortec gmbH reserves all rights even in the event of industrial property We reserve all rights of disposal such as copying and passing on to third parties. BOSCh and the symbol are registered trademarks of robert Bosch GmbH, Germany Note: Specifications within this document are subject to change without notice ( D BOSCH Data sheet Page 9 BMP180 3. Operation 3.1 General description The BMP180 is designed to be connected directly to a microcontroller of a mobile device via the lc bus. The pressure and temperature data has to be compensated by the calibration data of the E2PROM of the bmp180 3.2 General function and application schematics The BMP180 consists of a piezo-resistive sensor, an analog to digital converter and a control unit with E PROM and a serial l-C interface. The BMP180 delivers the uncompensated value of pressure and temperature. the e prom has stored 176 bit of individual calibration data. this is used to compensate offset, temperature dependence and other parameters of the sensor UP pressure data( 16 to 19 bit) UT= temperature data(16 bit BST-BMP180-DS000-08 Revision 2.4 January 2012 Bosch sensortec c Bosch Sensortec gmbH reserves all rights even in the event of industrial property We reserve all rights of disposal such as copying and passing on to third parties. BOSCh and the symbol are registered trademarks of robert Bosch GmbH, Germany Note: Specifications within this document are subject to change without notice ( D BOSCH Data sheet Page 10 BMP180 18,,36V 1.62∴3.6y 100nF 100nF VDD VDDIO EPROM BMP180 uController CSB e.g. 8 bit [Do not connect to PCB Control SDA Unit SCL SDO I-C interface LDo not conne c to PCB) Sensor ADC element GND Display Note (1)Pull-up resistors for I' C bus, Rp= 2.2KQ2.10kQ, typ. 4.7kQ Figure 2: Typical application circuit BST-BMP180-DS000-08 Revision 2.4 January 2012 Bosch sensortec c Bosch Sensortec gmbH reserves all rights even in the event of industrial property We reserve all rights of disposal such as copying and passing on to third parties. BOSCh and the symbol are registered trademarks of robert Bosch GmbH, Germany Note: Specifications within this document are subject to change without notice

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