BMP180

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Document revision 2.8 Document release date May 7th, 2015 Document number BST-BMP180-DS000-12 Technical reference code(s) 0 273 300 244 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 product’s appearance. Bosch Sensortec

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. BMP180 DIGITAL PRESSURE SENSOR Key features Package: LGA package with metal lid Small footprint: 3.6mm x 3.8mm Super-flat: 0.93mm height Low power: 5µA at 1 sample / sec. in standard mode Low noise: 0.06hPa (0.5m) in ultra low power mode 0.02hPa (0.17m) advanced resolution mode - Temperature measurement included - I2C 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-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. BMP180 general description The BMP180 is the function compatible successor of the BMP08 5, 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 I 2C 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-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. Index of Contents

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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.

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. 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 part s specification; additional solder drift is shown separately. Table 1: Operating conditions, output signal and mechanical characteristics Parameter Symbol Condition Min Typ Max Units Operating temperature TA operational -40 +85 full accuracy 0 +65 Supply voltage VDD ripple max. 50mVpp 1.8 2.5 3.6 V 1.62 2.5 3.6 Supply current @ 1 sample / sec. 25°C IDDLOW ultra low power mode 3 µA IDDSTD standard mode 5 µA IDDHR high resolution mode 7 µA IDDUHR Ultra high res. mode 12 µA IDDAR Advanced res. mode 32 µA Peak current Ipeak during conversion 650 µA Standby current IDDSBM @ 25°C 0.1 41 µA Relative accuracy pressure VDD = 3.3V 950 . . . 1050 hPa @ 25 °C ±0.12 hPa ±1.0 m 700 … 900hPa 25 . . . 40 °C ±0.12 hPa ±1.0 m Absolute accuracy pressure VDD = 3.3V 300 . . . 1100 hPa 300 . . . 1100 hPa Resolution of output data pressure 0.01 hPa temperature 0.1 °C Noise in pressure see table on page 12-13 Absolute accuracy temperature VDD = 3.3V 1 at 85°C

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. Conversion time pressure tc_p_low 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 Solder drifts Minimum solder height 50µm -0.5 +2 hPa Long term stability** 12 months ±1.0 hPa * The typical value is: -1±1 ** Long term stability is specified in the full accuracy operating pressure range 0 … 65°C

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. 2. Absolute maximum ratings Table 2: Absolute maximum ratings Parameter Condition Min Max Units Storage temperature -40 +85 °C Supply voltage all pins -0.3 +4.25 V ESD rating HBM, R = 1.5kΩ, C = 100pF ±2 kV Overpressure 10,000 hPa The BMP180 has to be handled as Electrostatic Sensitive Device (ESD). Figure 1: ESD

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. 3. Operation

3.1 General description

The BMP180 is designed to be connected directly to a microcontroller of a mobile device via the I 2C 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 E2PROM and a serial I2C interface. The BMP180 delivers the uncompensated value of pressure and temperature. The E 2PROM 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-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. Figure 2: Typical application circuit Note:

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. Start temperature measurement Read UT Start pressure measurement Read UP Start Calculate pressure and temperature in physical units wait (depends on mode, see below) wait 4.5 ms

3.3 Measurement of pressure and temperature

For all calculations presented here an ANSI C code is available from Bosch Sensortec (“BMP180 _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 I 2C 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 BMP180 E2PROM via the I2C 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. Figure 3: Measurement flow BMP180

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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.

3.3.1 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 BMP180 hardware accuracy modes, selected by driver software via the variable oversampling_setting Mode Parameter oversampling_setting Internal number of samples Conversion time pressure max. [ms] Avg. current @ 1 sample/s typ. [µA] RMS noise typ. [hPa] RMS noise typ. [m] ultra low power 0 1 4.5 3 0.06 0.5 standard 2 7.5 5 0.05 0.4 high resolution 4 13.5 7 0.04 0.3 ultra high resolution 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-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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.

3.3.2 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 BMP180 software accuracy mode, selected by driver software via the variable software_oversampling_setting Mode Parameter oversampling_setting software_ oversampl ing_settin g Conversion time pressure max. [ms] Avg. current @ 1 sample/s typ. [µA] RMS noise typ. [hPa] RMS noise typ. [m] Advanced resolution 3 1 76.5 32 0.02 0.17

3.4 Calibration coefficients

The 176 bit E 2PROM 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 BMP180 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-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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.

3.5 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 0.1°C. The following figure shows the detailed algorithm for pressure and temperature measurement. This algorithm is available to customers as reference C source code (“BMP180_ API”) from Bosch Sensortec and via its sales and distribution partn ers. Please contact your Bosch Sensortec representative for details.

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. Figure 4: Algorithm for pressure and temperature measurement

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. -1000 1000 2000 3000 4000 5000 6000 7000 8000 9000 300 400 500 600 700 800 900 1000 1100 Barometric pressure [hPa] Altitude above sea level [m] Altitude in standard atmosphere

3.6 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: Thus, a pressure change of ∆p = 1hPa corresponds to 8.43m at sea level. Figure 5: Transfer function: Altitude over sea level – Barometric pressure 5.255 p -1 * 44330 altitude

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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.

3.7 Calculating pressure at sea level

With the measured pressure p and the absolute altitude the pressure at sea level can be calculated: Thus, a difference in altitude of ∆altitude = 10m corresponds to 1.2hPa pressure change at sea level. 255.50 44330 altitude - 1 p p

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. 4. Global Memory Map The memory map below shows all externally accessible data registers which are needed to operate BMP180. 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. 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 r eset (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 0x 55 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. Register Name Register Address bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 Reset state out_xlsb F8h 0 0 0 00h out_lsb F7h 00h out_msb F6h 80h ctrl_meas F4h sco 00h soft reset E0h 00h id D0h 55h calib21 downto calib0 BFh down to AAh n/a Registers: Control registers Calibration registers Dat a registers Fixed Type: calib21<7:0> down to calib0<7:0> adc_out_xlsb<7:3 reset id<7:0> adc_out_lsb<7:0 adc_out_msb<7:0> oss<1:0> measurement control

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. 5. I2C Interface  I2C is a digital two wire interface  Clock frequencies up to 3.4Mbit/sec. (I2C standard, fast and high-speed mode supported)  SCL and SDA needs a pull-up resistor, typ. 4.7kOhm to VDDIO (one resistor each for all the I2C bus) The I2C 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. SDA (serial data) and SCL (serial clock) have open-drain outputs. For detailed I2C-bus specification please refer to: http://www.nxp.com/acrobat_download/literature/9398/39340011.pdf

5.1 I2C specification

Table 6: Electrical parameters for the I2C interface Parameter Symbol Min. Typ Max. Units Clock input frequency fSCL 3.4 MHz Input-low level VIL 0 0.2 * VDDIO V Input-high level VIH 0.8 * VDDIO VDDIO V Voltage output low level @ VDDIO = 1.62V, IOL = 3mA VOL 0.3 V SDA and SCL pull-up resistor Rpull-up 2.2 10 kOhm SDA sink current @ VDDIO = 1.62V, VOL = 0.3V ISDA_sink 9 mA Start-up time after power-up, before first communication tStart 10 Ms

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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.

5.2 Device and register address

The BMP180 module address is shown below. The LSB of the device address distinguishes between read (1) and write (0) operation, corresponding to address 0xEF (read) and 0xEE (write). Table 7: BMP180 addresses A7 A6 A5 A4 A3 A2 A1 W/R 1 1 1 0 1 1 1 0/1

5.3 I2C protocol

The I 2C interface protocol has special bus signal conditions. Start (S), stop (P) and binary data conditions are shown below. At start condition, SCL is high and SDA has a falling edge. Then the slave address is sent. After the 7 address bits, the direction contro l bit R/W selects the read or write operation. When a slave device recognizes that it is being addressed, it should acknowledge by pulling SDA low in the ninth SCL (ACK) cycle. At stop condition, SCL is also high, but SDA has a rising edge. Data must be he ld stable at SDA when SCL is high. Data can change value at SDA only when SCL is low. Even though V DDIO can be powered on before V DD, 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, V DD must be powered before V DDIO unless the limitations above are understood and not critical. Figure 7: I2C protocol

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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.

5.4 Start temperature and pressure measurement

The timing diagrams to start the measurement of the temperature value UT and pressure value UP are shown below. After start condition the master sends the device address write, the register address and the control register data. The BMP180 sends an acknowledge ment (ACKS) every 8 data bits when data is received. The master sends a stop condition after the last ACKS. Figure 8: Timing diagram for starting pressure measurement Abbreviations: S Start P Stop ACKS Acknowledge by Slave ACKM Acknowledge by Master NACKM Not Acknowledge by Master Table 8: Control registers values for different internal oversampling_setting (oss) 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

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. S ACKS Module address write 0xEE ACKS Register address e.g. 0xF6 MSB e.g. ADC result 0x5C ACKS Module address read 0xEF Restart ACKM LSB e.g. ADC result 0x96 NACKM SCL PR OM SDA P

5.5 Read A/D conversion result or E2PROM data

To read out the temperature data word UT (16 bit), the pressure data word UP (16 to 19 bit) and the E2PROM data proceed as follows: After the start condition the master sends the module address write command and register address. The register address selects the read register: E2PROM data registers 0xAA to 0xBF Temperature or pressure value UT or UP 0xF6 (MSB), 0xF7 (LSB), optionally 0xF8 (XLSB) Then the master sends a restart condition followed by the module address read that will be acknowledged by the BMP180 (ACKS). The BMP180 sends first the 8 MSB, acknowledged by the master (ACKM), then the 8 LSB. The master sends a "not acknowledge" (NACKM) and finally a stop condition. Optionally for ultra high resolution, the XLSB register with address 0xF8 can be read to extend the 16 bit word to up to 19 bits; refer to the application programming interface (API) software rev. 1.1 (“BMP180_ API”, available from Bosch Sensortec). Figure 9: Timing diagram read 16 bit A/D conversion result

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. 6. Package

6.1 Pin configuration

Picture shows the device in top view. Device pins are shown here transparently only for orientation purposes. Figure 10: Layout pin configuration BMP180 Table 9: Pin configuration BMP180 in No Name Function

1 CSB* Chip select

2 VDD Power supply

3 VDDIO Digital power supply

4 SDO* SPI output

5 SCL I2C serial bus clock input

6 SDA I2C serial bus data (or SPI input)

7 GND Ground

• A pin compatible product variant with SPI interface is possible upon customer’s request. For I2C (standard case) CSB and SDO are not used, they have to be left open. All pins have to be soldered to the PCB for symmetrical stress input even though they are not connected internally.

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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.

6.2 Outline dimensions

The sensor housing is a 7Pin LGA package with metal lid. Its dimensions are 3.60mm (±0.1 mm) x Note: All dimensions are in mm.

6.2.1 Bottom view

Figure 11: Bottom view BMP180 0,60 0,50

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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.

6.2.2 Top view

Figure 12: Top view BMP180

6.2.3 Side view

Figure 13: Side view BMP180

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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.

6.3 Moisture sensitivity level and soldering

The BMP180 is classified MSL 1 (moisture sensitivity level) according to IPC/JEDEC standards J - STD-020D and J-STD-033A. The device can be soldered Pb -free with a peak temperature of 260°C for 20 to 40 sec. The minimum height of the solder aft er reflow shall be at least 50µm. 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 (20°C). The soldering process can lead to an offset shift.

6.4 RoHS compliancy

The BMP180 sensor meets the requirements of the EC directive "Restriction of hazardous substances (RoHS)", please refer also to: "Directive 2011/6 5/EU of the European Parliament and of the Council of 8 June 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment". The BMP180 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 BMP180” 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 t he sensor is sensitive to light, which can influence the accuracy of the measurement (photo-current of silicon).  The BMP180 shall not the placed close the fast heating parts. In case of gradients > 3°C/sec. it is recommended to follow Bosch Sensortec app lication note ANP004, "Correction of errors induced by fast temperature changes". Please contact your Bosch Sensortec representative for details.

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. 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 t esting 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 t he purchaser’s 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 app lication 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-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. 8. Document history and modification Rev. No Chapter Description of modifications/changes Date

1.0 First edition for description of serial production material

– Preliminary version 1.1 5.1 New nomenclature of pin configuration 27 July 2010 1.2 5 Design change in package – hole in Lid and without slit 13 September 2010 1.3 3.2 5.1 - Standardizing pin naming over Bosch Sensortec products – typical application circuit - Optimizing pin description, SPI description

15 December 2010

2.0 1 - Non-preliminary version - Verifying parameter through characterization 28 January 2011 2.1 3.2 5.3 6.1 6.2.1 - Declaration of SDO and CSB pins in the typical application circuit - Adding global memory map and bits description - Power-up sequence - Description of used interfaces - Dimension pin7

1 April 2011

2.2 6.1 Correction of the pin configuration (editorial change) 14 April 2011 2.3 3.3 Optimizing noise performance 25 May 2011 2.4

6.3 Removed shelf-life constraints

26 January 2012 page 2 Comparison removed

5.1 Voltage output low level added

5.3 Power on sequence of VDD and VDDIO defined

2.5

1 Added max values for supply current for restricted

1 Added max value for standby current for restricted

5 Apr 2013 Figure 4 Update of calculation of algorithm for pressure and

Page 2 Changed wording from “ultra high resolution mode” to “advanced resolution mode”

2.6 Page 26 Changed document referral from ANP015 to BST-

2.7 3.5 New equation for B3 26 Aug 2014

2.8 Page 26 Updated RoHS directive to 2011/65/EU effective 8

BST-BMP180-DS000-12 | Revision 2.8 | May 2015 Bosch Sensortec © 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. 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_2.7_082014 Document number: BST-BMP180-DS000-11