Data sheet BMP183 Digital pressure sensor Bosch Sensortec BMP183 Data sheet Document revision 1.0 Document release date June 13 , 2012 Document number BST-BMP183-DS000-00 Technical reference code(s) 0 273 300 357 Notes Data in this document are subject to change without notice. Product photos and pictures are for illustration purposes only and may differ from the real products appearance. th Data sheet BMP183 Page 2 BMP183 DIGITAL PRESSURE SENSOR Key features Pressure range: Supply voltage: 300 ... 1100hPa (+9000m ... -500m relating to sea level) 1.8 ... 3.6V (VDD) 1.62V ... 3.6V (VDDIO) Package: LGA package with metal lid Small footprint: 3.6mm x 3.8mm Super-flat: 0.93mm height Low power: 5A at 1 sample / sec. in standard mode Low noise: 0.06hPa (0.5m) in ultra low power mode 0.02hPa (0.17m) ultra high resolution mode - Temperature measurement included - SPI interface - Fully calibrated - Pb-free, halogen-free and RoHS compliant, - MSL 1 Typical applications Enhancement of GPS navigation (dead-reckoning, slope detection, etc.) In- and out-door navigation Leisure and sports Weather forecast Vertical velocity indication (rise/sink speed) BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 3 BMP183 general description The BMP183 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 BMP183 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 BMP183 offers superior performance. The SPI interface allows for easy system integration with a microcontroller. The BMP183 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 BMP183 continues a new generation of micro-machined pressure sensors. BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 4 Index of Contents 1. ELECTRICAL CHARACTERISTICS ................................................................................................. 6 2. ABSOLUTE MAXIMUM RATINGS.................................................................................................... 8 3. OPERATION ...................................................................................................................................... 9 3.1 POWER SUPPLY AND POWER ON SEQUENCE ................................................................................. 9 3.2 GENERAL DESCRIPTION .............................................................................................................. 9 3.3 GENERAL FUNCTION AND APPLICATION SCHEMATICS ..................................................................... 9 3.4 MEASUREMENT OF PRESSURE AND TEMPERATURE ..................................................................... 11 3.4.1 Hardware pressure sampling accuracy modes ................................................................ 12 3.4.2 Software pressure sampling accuracy modes .................................................................. 13 3.5 CALIBRATION COEFFICIENTS...................................................................................................... 13 3.6 CALCULATING PRESSURE AND TEMPERATURE ............................................................................ 14 3.7 CALCULATING ABSOLUTE ALTITUDE............................................................................................ 16 3.8 CALCULATING PRESSURE AT SEA LEVEL ..................................................................................... 17 4. GLOBAL MEMORY MAP ................................................................................................................ 18 5. SPI INTERFACE .............................................................................................................................. 19 5.1 SPI SPECIFICATION ................................................................................................................... 19 5.2 SPI PROTOCOL......................................................................................................................... 20 5.3 START TEMPERATURE AND PRESSURE MEASUREMENT ................................................................ 21 5.4 READ A/D CONVERSION RESULT OR NMV DATA ......................................................................... 22 6. PACKAGE ........................................................................................................................................ 23 6.1 PIN CONFIGURATION ................................................................................................................. 23 6.2 OUTLINE DIMENSIONS ............................................................................................................... 24 6.2.1 Bottom view ..................................................................................................................... 24 6.2.2 Top view .......................................................................................................................... 25 6.2.3 Side view ......................................................................................................................... 25 6.3 MOISTURE SENSITIVITY LEVEL AND SOLDERING........................................................................... 26 6.4 ROHS COMPLIANCY .................................................................................................................. 26 6.5 MOUNTING AND ASSEMBLY RECOMMENDATIONS ......................................................................... 26 7. LEGAL DISCLAIMER ...................................................................................................................... 27 BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 5 7.1 ENGINEERING SAMPLES ............................................................................................................ 27 7.2 PRODUCT USE .......................................................................................................................... 27 7.3 APPLICATION EXAMPLES AND HINTS ........................................................................................... 27 8. DOCUMENT HISTORY AND MODIFICATION ............................................................................... 28 BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 6 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 Operating temperature Supply voltage TA VDD Condition Min operational -40 +85 full accuracy 0 +65 ripple max. 50mVpp 1.8 2.5 3.6 V 1.62 2.5 3.6 V VDDIO Typ Max Units C IDDLOW ultra low power mode 3 A IDDSTD standard mode 5 A IDDHR high resolution mode 7 A IDDUHR Ultra high res. mode 12 A IDDAR Advanced res. mode 32 A Peak current Ipeak during conversion 650 Standby current IDDSBM @ 25C 0.1 A 950 . . . 1050 hPa @ 25 C 0.12 hPa 1.0 m 700 ... 900hPa 25 . . . 40 C 0.12 hPa 1.0 m Supply current @ 1 sample / sec. 25C Relative accuracy pressure VDD = 3.3V Absolute accuracy pressure VDD = 3.3V Resolution of output data Noise in pressure (1) Symbol 300 . . . 1100 hPa 0 . . . +65 C -4.0 -1.0 300 . . . 1100 hPa -20 . . . 0 C -6.0 -1.0 1000 A (1) +2.0 hPa (1) +4.5 hPa pressure 0.01 hPa temperature 0.1 C see table on page 12-13 The typical value is: -11 BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Absolute accuracy temperature VDD = 3.3V -1.5 0.5 +1.5 C 0 . . . +65 C -2.0 1.0 +2.0 C ultra low power mode 3 4.5 ms tc_p_std standard mode 5 7.5 ms tc_p_hr high resolution mode 9 13.5 ms tc_p_luhr ultra high res. mode 17 25.5 ms tc_p_ar Advanced res. mode 51 76.5 ms Conversion time temperature tC_temp standard mode 3 4.5 ms Serial data clock fSCL 3.4 MHz +2 hPa Solder drifts Minimum solder height 50m 2 Long term stability 3 @ 25 C tc_p_low Conversion time pressure 2 Page 7 3 12 months -0.5 1.0 hPa verified with BST customer shuttle boards Long term stability is specified in the full accuracy operating pressure range 0 ... 65C BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 8 2. Absolute maximum ratings Table 2: Absolute maximum ratings Parameter Condition Storage temperature Supply voltage ESD rating all pins Min Max Units -40 +85 C -0.3 +4.25 V 2 kV 10,000 hPa HBM, R = 1.5k, C = 100pF Overpressure The BMP183 has to be handled as Electrostatic Sensitive Device (ESD). Figure 1: ESD BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 9 3. Operation 3.1 Power supply and power on sequence The BMP183 has two distinct power supply pins: VDD and VDDIO. VDD powers the internal digital and analogue circuitry and should not suffer from large voltage spikes. VDDIO is the supply for the digital interface and must match the voltages on the SPI interface. In case the voltage range allows it, VDD and VDDIO can be fed from a single supply line which must be >1.8V. The preferred power on sequence is VDD first. Even though VDDIO can be powered on before VDD, there is a chance of excessive power consumption (a few mA) if this sequence is used, and the state of the output pins is undefined so that the bus can be locked. Therefore, VDD must be powered before VDDIO unless the limitations above are understood and not critical. 3.2 General description The BMP183 is designed to be connected directly to a microcontroller of a mobile device via the SPI bus. The pressure and temperature data has to be compensated by the calibration data of the E2PROM of the BMP183. 3.3 General function and application schematics The BMP183 consists of a piezo-resistive sensor, an analog to digital converter and a control unit with E2PROM and a SPI interface. The BMP183 delivers the uncompensated value of pressure and temperature. The E2PROM 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-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 10 Figure 2 depicts a typical circuit connecting BMP183 to the micro controller, power supply and GND. VDD VDDIO CSB GND 7 SDI 6 SDI SCK SDO VDD SCK 2 5 VDDIO SDO 4 VDDIO SPI interface CSB 1 micro controller C1 3 BMP183 C2 Figure 2: Typical application circuit Note: Support capacitors for SPI bus required: C1=C2=100nF. BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 11 3.4 Measurement of pressure and temperature For all calculations presented here an ANSI C code is available from Bosch Sensortec ("BMP18x _API"). The microcontroller sends a start sequence to start a pressure or temperature measurement. After converting time, the result value (UP or UT, respectively) can be read via the interface. For calculating temperature in C and pressure in hPa, the calibration data has to be used. These constants can be read out from the BMP183 E2PROM via the interface at software initialization. The sampling rate can be increased up to 128 samples per second (standard mode) for dynamic measurement. In this case, it is sufficient to measure the temperature only once per second and to use this value for all pressure measurements during the same period. Start Start temperature measurement wait 4.5 ms Read UT Start pressure measurement wait (depends on mode, see below) Read UP calculate pressure and temperature in physical units Figure 3: Measurement flow BMP183 BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 12 3.4.1 Hardware pressure sampling accuracy modes By using different modes the optimum compromise between power consumption, speed and resolution can be selected, see below table. Table 3: Overview of BMP183 hardware accuracy modes, selected by driver software via the variable oversampling_setting Mode ultra low power RMS RMS noise noise typ. typ. [hPa] [m] 3 0.06 0.5 Internal Conversion time Avg. current @ Parameter number of pressure max. 1 sample/s typ. oversampling_setting samples [ms] [A] 1 4.5 0 standard 1 2 7.5 5 0.05 0.4 high resolution 2 4 13.5 7 0.04 0.3 ultra high resolution 3 8 25.5 12 0.03 0.25 For further information on noise characteristics see the relevant application note "Noise in pressure sensor applications". All modes can be performed at higher speeds, e.g. up to 128 times per second for standard mode, with the current consumption increasing proportionally to the sample rate. BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 13 3.4.2 Software pressure sampling accuracy modes For applications where a low noise level is critical, averaging is recommended if the lower bandwidth is acceptable. Oversampling can be enabled using the software API driver (with OSR = 3). Table 4: Overview of BMP183 software accuracy mode, selected by driver software via the variable software_oversampling_setting software_ Mode Parameter oversampling_setting Avg. current oversampl time @1 RMS noise RMS noise ing_settin pressure sample/s typ. [hPa] typ. [m] g max. [ms] typ. [A] 1 76.5 32 0.02 0.17 Advanced resolution Conversion 3 3.5 Calibration coefficients The 176 bit E2PROM is partitioned in 11 words of 16 bit each. These contain 11 calibration coefficients. Every sensor module has individual coefficients. Before the first calculation of temperature and pressure, the master reads out the E2PROM data. The data communication can be checked by checking that none of the words has the value 0 or 0xFFFF. Table 5: Calibration coefficients BMP183 reg adr Parameter MSB LSB AC1 0xAA 0xAB AC2 0xAC 0xAD AC3 0xAE 0xAF AC4 0xB0 0xB1 AC5 0xB2 0xB3 AC6 0xB4 0xB5 B1 0xB6 0xB7 B2 0xB8 0xB9 MB 0xBA 0xBB MC 0xBC 0xBD MD 0xBE 0xBF BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 14 3.6 Calculating pressure and temperature The mode (ultra low power, standard, high, ultra high resolution) can be selected by the variable oversampling_setting (0, 1, 2, 3) in the C code. Calculation of true temperature and pressure in steps of 1Pa (= 0.01hPa = 0.01mbar) and temperature in steps of 0.1C. The following figure shows the detailed algorithm for pressure and temperature measurement. This algorithm is available to customers as reference C source code ("BMP18x_API") from Bosch Sensortec and via its sales and distribution partners. Please contact your Bosch Sensortec representative for details. BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 15 Calculation of pressure and temperature for BMP183 type: short short short unsigned short unsigned short unsigned short short short short short short bmp180_get_ut 27898 long short (0 .. 3) BMP180_get_up 23843 long long long long long long long long long long long long long unsigned long long long long long long long long Figure 4: Algorithm for pressure and temperature measurement BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 16 3.7 Calculating absolute altitude With the measured pressure p and the pressure at sea level p0 e.g. 1013.25hPa, the altitude in meters can be calculated with the international barometric formula: p altitude 44330 * 1 - p0 1 5.255 9000 8000 7000 6000 5000 4000 3000 2000 1000 0 -1000 11 00 10 00 90 0 80 0 70 0 60 0 50 0 Altitude in standard atmosphere 40 0 30 0 Altitude above sea level [m] Thus, a pressure change of p = 1hPa corresponds to 8.43m at sea level. Barometric pressure [hPa] Figure 5: Transfer function: Altitude over sea level - Barometric pressure BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 17 3.8 Calculating pressure at sea level With the measured pressure p and the absolute altitude the pressure at sea level can be calculated: p0 p altitude 1 44330 5.255 Thus, a difference in altitude of altitude = 10m corresponds to 1.2hPa pressure change at sea level. BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 18 4. Global Memory Map The memory map below shows all externally accessible data registers which are needed to operate BMP183. The left columns show the memory addresses. The columns in the middle depict the content of each register bit. The colors of the bits indicate whether they are read-only, write-only or read- and writable. The memory is volatile so that the writable content has to be re-written after each power-on. Not all register addresses are shown. These registers are reserved for further Bosch factory testing and trimming. Register Name out_xlsb out_lsb out_msb ctrl_meas soft reset id calib21 downto calib0 Register Adress F8h F7h F6h F4h E0h D0h BFh down to AAh Registers: bit7 bit6 bit5 bit4 adc_out_xlsb<7:3> oss<1:0> Control registers Type: read / write Calibration registers read only bit3 bit2 bit1 bit0 Reset state 0 0 0 00h 00h 80h 00h 00h 55h n/a adc_out_lsb<7:0> adc_out_msb<7:0> sco measurement control reset id<7:0> calib21<7:0> down to calib0<7:0> Data registers read only Fixed read only Figure 6: Memory map Measurement control (register F4h <4:0>): Controls measurements. Refer to Figure 6 for usage details. Sco (register F4h <5>): Start of conversion. The value of this bit stays "1" during conversion and is reset to "0" after conversion is complete (data registers are filled). Oss (register F4h <7:6>): controls the oversampling ratio of the pressure measurement (00b: single, 01b: 2 times, 10b: 4 times, 11b: 8 times). Soft reset (register E0h): Write only register. If set to 0xB6, will perform the same sequence as power on reset. Chip-id (register D0h): This value is fixed to 0x55 and can be used to check whether communication is functioning. After conversion, data registers can be read out in any sequence (i.e. MSB first or LSB first). Using a burst read is not mandatory. BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 19 5. SPI Interface The BMP183 features a four wire SPI interface with clock speeds of up to 10 MHz. The interface is four wire SPI with CPOL = 1, CPHA = 1 (SPI mode 3). The SPI bus is used to control the sensor, to read calibration data from the E2PROM and to read the measurement data when A/D conversion is finished. 5.1 SPI specification Table 6: Electrical parameters for the SPI interface Parameter Symbol Min. Clock input frequency fSCL Input-low level Typ Max. Units 0.0 10.0 MHz VIL 0 0.2 * VDDIO V Input-high level VIH 0.8 * VDDIO VDDIO V SCK low pulse Tlow_sck4 20 ns SCK high pulse Thigh_sck_4 20 ns SDI setup time Tsetup_sdi_4 20 ns SDI hold time Thold_sdi_4 20 ns SDO output delay Tdelay_sdo_4 CSB setup time Tsetup_csb_4 20 ns CSB hold time Thold_csb_4 20 ns Start-up time after power-up, before first communication tStart 10 ms 30 ns BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 20 5.2 SPI protocol CSB is active low with pull-up resistor integrated. Data on SDI is latched by BMP183 at SCK rising edge and SDO is changed at SCK falling edge. Communication starts when CSB goes to low and stops when CSB goes to high; during these transitions on CSB, SCK must be high. In the SPI protocol, the MSB of the register address remains is not used. For example, register 0xF7 is addressed by 0x77 in SPI mode. Bit 7 is replaced by an R/W bit (read: 1, write: 0). Figure 7: SPI protocol When write is required, sequences of two bytes are required: one control byte to define the address to be written to and one data byte which is written: Figure 8: SPI write of two bytes When read is required, the sequence consists in one control byte to define the first address to be read followed by data bytes. Addresses are automatically incremented. Figure 9: SPI read of two bytes BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 21 5.3 Start temperature and pressure measurement Pressure and temperature measurement are always initiated by the bus master. A write command into register 0xF4 will start temperature or pressure measurement. The result can be read out after respecting the conversion time delay. In Table 7, the write values for the different commands are listed. Measurement Control register value (register address 0xF4) Max. conversion time [ms] Temperature 0x2E 4.5 Pressure (oss = 0) 0x34 4.5 Pressure (oss = 1) 0x74 7.5 Pressure (oss = 2) 0xB4 13.5 Pressure (oss = 3) 0xF4 25.5 Table 7: Control registers values for different internal oversampling_setting (oss) BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 22 5.4 Read A/D conversion result or NVM data To read out the temperature data word UT (16 bit), the pressure data word UP (16 to 19 bit) and the NVM data proceed as follows: After lowering CSB, the master send the read command with the register start address. NVM data registers: 0xAA (to read 0xAA - 0xBF) ADC results UT or UP: 0xF6 (to read 0xF6 - 0xF7, optionally 0xF8) After writing the read command + register address, the master sends further clock cycles in order to allow for the BMP183 to output the data to the SDO pin. For ultra high resolution, the XLSB register with address 0xF8 can be read to extend the 16 bit word to up to 19 bits. BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 23 6. Package 6.1 Pin configuration Picture shows the device in top view. Device pins are shown here transparently only for orientation purposes. 1 7 6 2 5 3 4 Figure 10: Layout pin configuration BMP183 Table 8: Pin configuration BMP183 in No Name Function 1 CSB Chip select 2 VDD Digital and analog power supply 3 VDDIO Interface power supply 4 SDO SPI data output 5 SCK SPI clock input 6 SDI SPI data input 7 GND Ground; connected to lid BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 24 6.2 Outline dimensions The sensor housing is a 7Pin LGA package with metal lid. Its dimensions are 3.60mm (0.1 mm) x 3.80mm (0.1 mm) x 0.93mm (0.07 mm). Note: All dimensions are in mm. 6.2.1 Bottom view 0,50 0,60 Figure 11: Bottom view BMP183 BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 25 6.2.2 Top view Figure 12: Top view BMP183 6.2.3 Side view Figure 13: Side view BMP183 BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 26 6.3 Moisture sensitivity level and soldering The BMP183 is classified MSL 1 (moisture sensitivity level) according to IPC/JEDEC standards JSTD-020D and J-STD-033A. The device can be soldered Pb-free with a peak temperature of 260C for 20 to 40 sec. The minimum height of the solder after reflow shall be at least 50m. This is required for good mechanical decoupling between the sensor device and the printed circuit board (PCB). To ensure good solder-ability, the devices shall be stored at room temperature (20C). The soldering process can lead to an offset shift. 6.4 RoHS compliancy The BMP183 sensor meets the requirements of the EC directive "Restriction of hazardous substances (RoHS)", please refer also to: "Directive 2002/95/EC of the European Parliament and of the Council of 27 January 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment". The BMP183 sensor is also halogen-free. 6.5 Mounting and assembly recommendations In order to achieve the specified performance for you design, the following recommendations and the "Handling, soldering & mounting instructions BMP183" should be taken into consideration when mounting a pressure sensor on a printed-circuit board (PCB): The clearance above the metal lid shall be 0.1mm at minimum. For the device housing appropriate venting needs to be provided in case the ambient pressure shall be measured. Liquids shall not come into direct contact with the device. During operation the sensor is sensitive to light, which can influence the accuracy of the measurement (photo-current of silicon). The BMP183 shall not the placed close the fast heating parts. In case of gradients > 3C/sec. it is recommended to follow Bosch Sensortec application note ANP015, "Correction of errors induced by fast temperature changes". Please contact your Bosch Sensortec representative for details. BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 27 7. Legal disclaimer 7.1 Engineering samples Engineering Samples are marked with an asterisk (*) or (e). Samples may vary from the valid technical specifications of the product series contained in this data sheet. They are therefore not intended or fit for resale to third parties or for use in end products. Their sole purpose is internal client testing. The testing of an engineering sample may in no way replace the testing of a product series. Bosch Sensortec assumes no liability for the use of engineering samples. The Purchaser shall indemnify Bosch Sensortec from all claims arising from the use of engineering samples. 7.2 Product use Bosch Sensortec products are developed for the consumer goods industry. They may only be used within the parameters of this product data sheet. They are not fit for use in life-sustaining or security sensitive systems. Security sensitive systems are those for which a malfunction is expected to lead to bodily harm or significant property damage. In addition, they are not fit for use in products which interact with motor vehicle systems. The resale and/or use of products are at the purchasers own risk and his own responsibility. The examination of fitness for the intended use is the sole responsibility of the Purchaser. The purchaser shall indemnify Bosch Sensortec from all third party claims arising from any product use not covered by the parameters of this product data sheet or not approved by Bosch Sensortec and reimburse Bosch Sensortec for all costs in connection with such claims. The purchaser must monitor the market for the purchased products, particularly with regard to product safety, and inform Bosch Sensortec without delay of all security relevant incidents. 7.3 Application examples and hints With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Bosch Sensortec hereby disclaims any and all warranties and liabilities of any kind, including without limitation warranties of non-infringement of intellectual property rights or copyrights of any third party. The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. They are provided for illustrative purposes only and no evaluation regarding infringement of intellectual property rights or copyrights or regarding functionality, performance or error has been made. BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Data sheet BMP183 Page 28 8. Document history and modification Rev. No Chapter Description of modifications/changes 1.0 All Document creation Date 13-06-2012 Bosch Sensortec GmbH Gerhard-Kindler-Strasse 8 72770 Reutlingen / Germany contact@bosch-sensortec.com www.bosch-sensortec.com Modifications reserved | Printed in Germany Specifications are subject to change without notice Revision_1.0_062012 Document number: BST-BMP183-DS000-00 BST-BMP183-DS000-00 | Revision 1.0 | June 2012 Bosch Sensortec (c) Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. 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. Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Bosch Sensortec: 0330.SB0.357 BMP183