BMP085-0330SBO008 BOSCH, BMP085-0330SBO008 Datasheet

Daughter Board

BMP085-0330SBO008

Manufacturer Part Number
BMP085-0330SBO008
Description
Daughter Board
Manufacturer
BOSCH
Datasheet

Specifications of BMP085-0330SBO008

Silicon Manufacturer
Bosch
Application Sub Type
Accelerometer - Three-Axis
Kit Application Type
Sensing - Motion / Vibration / Shock
Silicon Core Number
BMP085
Kit Contents
Board
BMP085
Digital pressure sensor
Data sheet
BMP085 Data sheet
Order code
Package type
Data sheet revision
Release date
Document number
Notes
Rev. 1.0
© 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.
Specifications are subject to change without notice.
0 273 300 144
LCC8
1.0
01 July 2008
BST-BMP085-DS000-03
The BMP085 digital pressure sensor is functionally compatible to the existing Bosch
Sensortec SMD500 digital pressure sensor. Product photos and pictures are for
illustration purposes only and may differ from the real product’s appearance.
Specifications are subject to change without notice.
Data sheet
BMP085
Page 1
Bosch Sensortec
01 July 2008

Related parts for BMP085-0330SBO008

BMP085-0330SBO008 Summary of contents

Page 1

... July 2008 BST-BMP085-DS000-03 Page 1 The BMP085 digital pressure sensor is functionally compatible to the existing Bosch Sensortec SMD500 digital pressure sensor. Product photos and pictures are for illustration purposes only and may differ from the real product’s appearance. Specifications are subject to change without notice. ...

Page 2

... BMP085 Digital pressure sensor Key features Pressure range: Supply voltage: LCC8 package: Low power: Low noise: - Temperature measurement included interface - Fully calibrated - Pb-free, halogen-free and RoHS compliant, - MSL 1 New features comparison Smaller package height Faster conversion time (standard mode each) 2 Faster I C data transfer Extended min ...

Page 3

... The BMP085 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 150 million pressure sensors in the field, the BMP085 continues a new generation of micro-machined pressure sensors. Rev. 1.0 © ...

Page 4

... 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. Specifications are subject to change without notice. BMP085 Data sheet .............................................................. 8 ...

Page 5

... 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. Specifications are subject to change without notice. BMP085 Data sheet ..................................................................................... 24 ...

Page 6

... 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. Specifications are subject to change without notice. BMP085 Data sheet Condition ...

Page 7

... ESD rating C = 100pF Overpressure The BMP085 has to be handled as Electrostatic Sensitive Device (ESD). Rev. 1.0 © 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. ...

Page 8

... Operation 3.1 General description The BMP085 is designed to be connected directly to a microcontroller of a mobile device via the bus. The pressure and temperature data has to be compensated by the calibration data of 2 the E PROM of the BMP085. 3.2 General function and application schematics The BMP085 consists of a piezo-resistive sensor, an analog to digital converter and a control ...

Page 9

... Pull-up resistors for I C bus Note: The BMP085 can be supplied independently with different levels of V possible with the SMD500. In case of different voltage levels, V decoupling capacitor each. Rev. 1.0 © 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 ...

Page 10

... By using different modes the optimum compromise between power consumption, speed and resolution can be selected, see below table. Overview of BMP085 modes, selected by driver software via the variable oversampling_setting: Parameter Mode oversampling_setting ultra low power 0 standard ...

Page 11

... The mode (ultra low power, standard, high, ultra high resolution) can be selected by the variable oversampling_setting ( the C code. The universal code SMD500/BMP085 is fully upward compatible to SMD500 and recognizes automatically the device ID. Thus, the SMD500 can be replaced "on the fly" by the BMP085 without changing hardware or software. Calculation of true temperature and pressure in steps of 1Pa (= 0.01hPa = 0.01mbar) and temperature in steps of 0.1° ...

Page 12

... The following figure shows the detailed algorithm for pressure and temperature measurement. The algorithm is available as C source code (“ Calculation of pressure and temperature for BMP085 Start Read calibration data 2 from the E PROM of the BMP085 2 read out E PROM registers, 16 bit, MSB first ...

Page 13

... 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. Specifications are subject to change without notice. BMP085 Data sheet ⎞ ...

Page 14

... C-bus specification please refer to: http://www.nxp.com/acrobat_download/literature/9398/39340011.pdf The BMP085 has a master clear (XCLR) input that is used to reset the BMP085 and initializes internal registers and counters. The device is automatically reset by power on reset (POR) circuitry. XCLR can be left floating if not used. The pad has an internal pull-up resistor. ...

Page 15

... Device and register address The BMP085 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 4 protocol 2 The I C interface protocol has special bus signal conditions. Start (S), stop (P) and binary data conditions are shown below ...

Page 16

... 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 BMP085 sends an acknowledgement (ACKS) every 8 data bits when data is received. The master sends a stop condition after the last ACKS ...

Page 17

... Temperature or pressure value Then the master sends a restart condition followed by the module address read that will be acknowledged by the BMP085 (ACKS). The BMP085 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. ...

Page 18

... 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. Specifications are subject to change without notice. BMP085 Data sheet Type ...

Page 19

... 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. Specifications are subject to change without notice. BMP085 Data sheet Page 19 ...

Page 20

... 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. Specifications are subject to change without notice. BMP085 Data sheet Page 20 ...

Page 21

... 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. Specifications are subject to change without notice. BMP085 Data sheet Pin 1 identifier ...

Page 22

... This is required for good mechanical decoupling between the sensor device and the printed circuit board (PCB). The BMP085 devices have to be soldered within 6 months after shipment (shelf life). To ensure good solder-ability, the devices shall be stored at room temperature (20°C). ...

Page 23

... Therefore, the hole in the top lid shall not be exposed to direct light during operation. • The BMP085 shall not the placed close the fast heating parts. In case of gradients > 3°C/sec recommended to follow Bosch Sensortec application note ANP015, "Correction of errors induced by fast temperature changes". Please contact your Bosch Sensortec representative for details. • ...

Page 24

... 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. Specifications are subject to change without notice. BMP085 Data sheet Page 24 ...

Page 25

... Added optional EOC to schematic 5.7 BMP085 is halogen-free Rev. 1.0 © 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. ...

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