3-AXIS ACCELEROMETER DIGITAL I/F

BMA250

Manufacturer Part NumberBMA250
Description3-AXIS ACCELEROMETER DIGITAL I/F
ManufacturerBosch Sensortec
Series-
BMA250 datasheets
 

Specifications of BMA250

Featured ProductBMA250 - Digital, Triaxial Acceleration SensorAxisX, Y, Z
Acceleration Range±2g, 4g, 8g, 16gSensitivity256LSB/g, 128LSB/g, 64LSB/g, 16LSB/g
Voltage - Supply1.62 V ~ 3.6 VOutput TypeI²C™, SPI™
Bandwidth8Hz ~ 1kHzInterfaceI²C, SPI
Mounting TypeSurface MountPackage / Case12-VQFN
Lead Free Status / Rohs StatusLead free / RoHS CompliantFor Use With828-1024 - BMA250 DAUGHTERCARD FOR DEV KIT
Other names828-1023-2  
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BMA250
Digital, triaxial acceleration sensor
Data sheet
Bosch Sensortec
BMA250 Data sheet
Ordering code
Package type
Document revision
Document release date
Document number
Technical reference code(s)
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.
Note: Specifications within this document are subject to change without notice.
BMA250
Data sheet
Please contact your Bosch Sensortec representative for the ordering code
12-pin LGA
1.0
03 March 2011
BST-BMA250-DS002-02
0 273 141 121
Data in this document are subject to change without notice. Product
photos and pictures are for illustration purposes only and may differ from
Page 1 / not for publishing
the real product’s appearance.
Bosch Sensortec
03 March 2011

BMA250 Summary of contents

  • Page 1

    ... BMA250 Digital, triaxial acceleration sensor Data sheet Bosch Sensortec BMA250 Data sheet Ordering code Package type Document revision Document release date Document number Technical reference code(s) 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 ...

  • Page 2

    ... Advanced system power management for mobile applications General description The BMA250 is a triaxial, low-g acceleration sensor with digital output for consumer market applications. It allows measurements of acceleration in three perpendicular axes. An evaluation circuitry (ASIC) converts the output of a micromechanical acceleration-sensing structure (MEMS) that works according to the differential capacitance principle. ...

  • Page 3

    ... Package and interfaces of the BMA250 have been defined to match a multitude of hardware requirements. Since the sensor features an ultra-small footprint and a flat package it is ingeniously suited for mobile applications. The BMA250 offers a variable V optimize functionality, performance and power consumption in customer specific applications. In addition it features an on-chip interrupt controller enabling motion-based applications without use of a microcontroller ...

  • 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. Note: Specifications within this document are subject to change without notice. BMA250 Data sheet Index of Contents ...

  • 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. Note: Specifications within this document are subject to change without notice. BMA250 Data sheet ............................................................................................................. 42 (EEPROM ) ...

  • 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. Note: Specifications within this document are subject to change without notice. BMA250 Data sheet ..................................................................................................... 73 ...

  • Page 7

    ... 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. BMA250 Data sheet Condition ...

  • Page 8

    ... 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. BMA250 Data sheet Condition ...

  • Page 9

    ... 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. BMA250 Data sheet Condition ...

  • Page 10

    ... Block diagram Figure 1 shows the basic building blocks of the BMA250: 4. Functional description Note: Default values for registers can be found in chapter 5. 4.1 Power management The BMA250 has two distinct power supply pins: • the main power supply for all internal analog and digital functional blocks; ...

  • Page 11

    ... PS pin is needed in order to ensure reliable protocol selection DDIO (see section 4.2 Operational modes). 4.2 Operational modes Depending on the configuration the BMA250 is able to operate in two different operational modes:  General mode: The device is acting as a slave on a digital interface (SPI or I²C) and is controlled by the external bus master (e.g. μ ...

  • Page 12

    ... 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. BMA250 Data sheet VDD ...

  • 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. Note: Specifications within this document are subject to change without notice. BMA250 Data sheet State low “ ...

  • Page 14

    ... Power modes The BMA250 has three different power modes. Besides normal mode, which represents the fully operational state of the device, there are two special energy saving modes: low-power mode and suspend mode. The possible transitions between the power modes are illustrated in figure 3: In normal mode, all parts of the electronic circuit are held powered-up and data acquisition is performed continuously ...

  • Page 15

    ... Table 6: Sleep phase duration settings The current consumption of the BMA250 can be calculated according to this formula: When making an estimation about the length of the wake-up phase has to be considered. Therefore, t w_up wake-up phase all analog modules are held powered-up, while during the sleep phase most analog modules are powered down ...

  • Page 16

    ... 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. BMA250 Data sheet Sleep phase ...

  • Page 17

    ... Note: Settings 00xxx result in a bandwidth of 7.81 Hz; settings 1xxxx result in a bandwidth of 1000 Hz recommended to actively use the range from ´01000b´ to ´01111b´ only in order to be compatible with future products. The BMA250 supports four different acceleration measurement ranges. A measurement range is selected by setting the (0x0F) range bits as follows: Range ...

  • Page 18

    ... Offset compensation Offsets in measured signals can have several causes but they are always unwanted and disturbing in many cases. Therefore, the BMA250 offers an advanced set of four digital offset compensation methods which are closely matched to each other. These are slow, fast, and manual compensation, and inline calibration ...

  • 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. Note: Specifications within this document are subject to change without notice. BMA250 Data sheet Figure 4: Principle of offset compensation ...

  • 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. Note: Specifications within this document are subject to change without notice. BMA250 Data sheet Table 11: Offset target settings ...

  • 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. Note: Specifications within this document are subject to change without notice. BMA250 Data sheet (0x36) ...

  • Page 22

    ... Non-volatile memory The entire memory of the BMA250 consists of three different kinds of registers: hard-wired, volatile, and non-volatile. Non-volatile memory is implemented as EEPROM. Part of it can be both read and written by the user. Access to non-volatile memory is only possible through (volatile) image registers ...

  • Page 23

    ... 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. BMA250 Data sheet Table 14: Interrupt mode selection ...

  • 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. Note: Specifications within this document are subject to change without notice. BMA250 Data sheet Figure 5: Interrupt modes “ ...

  • Page 25

    ... 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. BMA250 Data sheet acc(t ...

  • Page 26

    ... 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. BMA250 Data sheet Page 26 / not for publishing ...

  • Page 27

    ... 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. BMA250 Data sheet 2nd tap ...

  • Page 28

    ... 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. BMA250 Data sheet Table 15: Selection of tap_dur ...

  • Page 29

    ... 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. BMA250 Data sheet Table 16: Meaning of (0x2B) tap_samp ...

  • Page 30

    ... 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. BMA250 Data sheet Table 17: Orientation mode settings ...

  • Page 31

    ... 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. BMA250 Data sheet Angle 333° ...

  • Page 32

    ... 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. BMA250 Data sheet Conditions ...

  • Page 33

    ... 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. BMA250 Data sheet parameter ...

  • Page 34

    ... 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. BMA250 Data sheet Page 34 / not for publishing ...

  • Page 35

    ... 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. BMA250 Data sheet Page 35 / not for publishing ...

  • Page 36

    ... 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. BMA250 Data sheet bit6 ...

  • Page 37

    ... 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. BMA250 Data sheet , register (0x00) ...

  • Page 38

    ... 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. BMA250 Data sheet Description ...

  • Page 39

    ... 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. BMA250 Data sheet Description ...

  • Page 40

    ... 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. BMA250 Data sheet Description ...

  • Page 41

    ... 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. BMA250 Data sheet Bit 4 ...

  • Page 42

    ... 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. BMA250 Data sheet Bit 4 ...

  • Page 43

    ... 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. BMA250 Data sheet Description ...

  • Page 44

    ... 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. BMA250 Data sheet Description ´ ...

  • Page 45

    ... 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. BMA250 Data sheet Bit 4 ...

  • Page 46

    ... 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. BMA250 Data sheet Bit 4 ...

  • Page 47

    ... 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. BMA250 Data sheet Bit 4 ...

  • Page 48

    ... 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. BMA250 Data sheet Bit 4 ...

  • Page 49

    ... 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. BMA250 Data sheet Bit 4 ...

  • Page 50

    ... 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. BMA250 Data sheet Bit 4 ...

  • Page 51

    ... 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. BMA250 Data sheet Bit 5 ...

  • Page 52

    ... 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. BMA250 Data sheet Bit 4 ...

  • Page 53

    ... 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. BMA250 Data sheet Page 53 / not for publishing ...

  • Page 54

    ... Digital interfaces The BMA250 supports two serial digital interface protocols for communication as a slave with a host device (when operating in general mode): SPI and I²C. The active interface is selected by the state of the Pin#11 (PS) ‘protocol select’ pin: ´0´ (´1´) selects SPI (I²C). For details see section 4 ...

  • Page 55

    ... The following figure shows the definition of the SPI timings given in table 73: The SPI interface of the BMA250 is compatible with two modes, ´00´ and ´11´. The automatic selection between [CPOL = ´0´ and CPHA = ´0´] and [CPOL = ´1´ and CPHA = ´1´] is done based on the value of SCK after a falling edge of CSB ...

  • Page 56

    ... For single byte read as well as write operations, 16-bit protocols are used. The BMA250 also supports multiple-byte read operations. In SPI 4-wire configuration CSB (chip select low active), SCK (serial clock), SDI (serial data input), and SDO (serial data output) pins are used. The communication starts when the CSB is pulled low by the SPI master and stops when CSB is pulled high ...

  • Page 57

    ... 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. BMA250 Data sheet Data byte ...

  • Page 58

    ... Both lines are connected to V are pulled high when the bus is free. The I²C interface of the BMA250 is compatible with the I²C Specification UM10204 Rev. 03 (19 June 2007), available at http://www.nxp.com. The BMA250 supports I²C standard mode and fast mode, only 7-bit address mode is supported ...

  • Page 59

    ... 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. BMA250 Data sheet t ...

  • Page 60

    ... In order to prevent the I²C slave of the device to lock-up the I²C bus, a watchdog timer (WDT) is implemented. The WDT observes internal I²C signals and resets the I²C interface if the bus is locked-up by the BMA250. The activity and the timer period of the WDT can be configured through the bits (0x34) i2c_wdt_en and (0x34) i2c_wdt_sel. ...

  • Page 61

    ... 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. BMA250 Data sheet Control byte ...

  • Page 62

    ... 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. BMA250 Data sheet Figure 19 Pin-out bottom view ...

  • Page 63

    ... 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. BMA250 Data sheet Figure 20: 4-wire SPI connection ...

  • Page 64

    ... 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. BMA250 Data sheet Figure 21: 3-wire SPI connection ...

  • Page 65

    ... 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. BMA250 Data sheet Figure 22: I²C connection , C is 100 nF ...

  • Page 66

    ... 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. BMA250 Data sheet Figure 23: Package outline dimensions ...

  • Page 67

    ... 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. BMA250 Data sheet Figure 24: Orientation of sensing axis ...

  • Page 68

    ... 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. BMA250 Data sheet Page 68 / not for publishing ...

  • Page 69

    ... 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. BMA250 Data sheet Symbol ...

  • Page 70

    ... Soldering guidelines The moisture sensitivity level of the BMA250 sensors corresponds to JEDEC Level 1, see also IPC/JEDEC J-STD-020C - Classification for non-hermetic Solid State Surface Mount Devices" IPC/JEDEC J-STD-033A "Joint Industry Standard: Handling, Packing, Shipping and Use of - Moisture/Reflow Sensitive Surface Mount Devices". The sensor fulfils the lead-free soldering requirements of the above-mentioned IPC/JEDEC standard, i.e. reflow soldering with a peak temperature up to 260° ...

  • Page 71

    ... Unused inputs must always be tied to a defined logic voltage level. 8.7 Tape and reel specification The BMA250 is shipped in a standard cardboard box. The box dimension for 1 reel is 35cm x 35cm x 6cm BMA250 quantity: 10,000pcs per reel, please handle with care. ...

  • Page 72

    ... Halogen content Results of chemical analysis indicate that the BMA250 contains less than 900ppm (by weight) of Fluorine, Chlorine, Iodine and Bromine (i.e. < 50ppm per each substance). Therefore the BMA250 can be regarded as halogen-free. For more details on the analysis results please contact your Bosch Sensortec representative ...

  • Page 73

    ... 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. BMA250 Data sheet Page 73 / not for publishing ...

  • Page 74

    ... Note: Specifications within this document are subject to change without notice. BMA250 Data sheet Page 74 / not for publishing Bosch Sensortec Date 17 December 2010 26 January 2011 03 March 2011 Bosch Sensortec GmbH Gerhard-Kindler-Strasse 8 72770 Reutlingen / Germany contact@bosch-sensortec.com www.bosch-sensortec.com Modifications reserved | Printed in Germany Specifications subject to change without notice Document number: BST-BMA250-DS002-02 Version_1.0_032011 03 March 2011 ...