BMA220-SHUTL

BMA220 BMA220 Digital, triaxial acceleration Data sheet sensor Bosch Sensortec Data sheet Bosch Sensortec BMA220 data sheet Ordering code Please contact your Bosch Sensortec representative for the ordering code Package type 12-pin LGA Document revision 1.10 Document release date 13 April 2011 Document number BST-BMA220-DS003-07 Technical reference code(s) 0 273 141 102 Notes Rev. 1.10 Specifications are subject to change without notice. Page 1 13 April 2011 Product photos and pictures are for illustration purposes only and may differ from real appearance. © Bosch Sensortec GmbH reserves all rights even in thethe event of product’s 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. Document is not intended for publication. BMA220 Data sheet Bosch Sensortec BMA220 Triaxial 2g to 16g acceleration sensor with on-chip motiontriggered interrupt controller Key features • Three-axis accelerometer • Ultra-Small package • • • • • Mold package (LGA 12ld), Footprint 2mm x 2mm, height 0.98mm Digital interface SPI (4-wire, 3-wire), I²C, interrupt pin I/O supply voltage range: 1.6V to 3.6V Programmable functionality Acceleration ranges ±2g/±4g/±8g/±16g Bandwidth 1kHz . . . 32Hz Self test On-chip interrupt controller Motion-triggered interrupt-signal generation for - orientation recognition - any-motion detection - tap/double tap sensing - low-g/high-g detection Stand-alone capability (no microcontroller needed) Ultra-low power ASIC Low current consumption, short wake-up time, advanced features for system power management RoHS compliant, halogen-free Typical applications • Display profile switching • Tap/double tap sensing • Menu scrolling • Gaming • Drop detection for warranty logging • Advanced system power management for mobile applications General description The BMA220 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. Package and interface 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 sensor offers a variable I/O supply voltage range from 1.6V to 3.6V and can be programmed to 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. The BMA220 senses tilt, motion and shock vibration in cell phones, handhelds, computer peripherals, man-machine interfaces, virtual reality features and game controllers. Rev. 1.10 Page 2 13 April 2011 © 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. Document is not intended for publication. BMA220 Data sheet Bosch Sensortec CONTENT 1 SPECIFICATION....................................................................................................................................... 5 2 ABSOLUTE MAXIMUM RATINGS........................................................................................................... 7 3 BLOCK DIAGRAM ................................................................................................................................... 8 4 GLOBAL MEMORY MAP ......................................................................................................................... 9 4.1 CONTROL REGISTERS .......................................................................................................................... 10 4.2 SETTING REGISTERS ............................................................................................................................ 13 4.3 DATA REGISTERS................................................................................................................................. 14 4.4 INTERRUPT CONTROL REGISTERS ......................................................................................................... 15 5 INTERRUPT CONTROLLER.................................................................................................................. 16 5.1 LATCHED VS. NON-LATCHED MODES ..................................................................................................... 16 5.2 SUPPORTED TYPES OF INTERRUPTS...................................................................................................... 17 5.3 POWER-SAVING MODES ....................................................................................................................... 17 5.4 ANY-MOTION (SLOPE) DETECTION ......................................................................................................... 18 5.5 TAP SENSING ...................................................................................................................................... 21 5.6 ORIENTATION RECOGNITION ................................................................................................................. 24 5.7 LOW-G DETECTION .............................................................................................................................. 27 5.8 HIGH-G DETECTION .............................................................................................................................. 29 5.9 DATA READY DETECTION ...................................................................................................................... 30 6 OPERATION MODES ............................................................................................................................. 31 6.1 DEDICATED MODES (µC-LESS / STAND ALONE)...................................................................................... 32 6.2 DIGITAL INTERFACE MODES .................................................................................................................. 33 6.3 LOW-POWER MODE AND SUSPEND MODE............................................................................................... 34 6.4 MODE TRANSITION VIA INTERFACE ........................................................................................................ 35 6.5 SELF TEST MODE ................................................................................................................................. 36 7 INTERFACES.......................................................................................................................................... 37 7.1 GENERAL DIGITAL INTERFACE DESCRIPTION .......................................................................................... 38 7.2 SPI INTERFACE ................................................................................................................................... 38 7.3 I²C INTERFACE .................................................................................................................................... 42 7.4 I²C WATCHDOG TIMER .......................................................................................................................... 46 7.5 SPI AND I²C ACCESS RESTRICTIONS ..................................................................................................... 46 8 PIN-OUT AND CONNECTING DIAGRAM ............................................................................................. 47 8.1 PIN-OUT .............................................................................................................................................. 47 8.2 CONNECTING DIAGRAMS ...................................................................................................................... 48 9 PACKAGE............................................................................................................................................... 51 9.1 OUTLINE DIMENSIONS .......................................................................................................................... 51 9.2 SENSING AXES ORIENTATION AND POLARITY OF THE ACCELERATION OUTPUT .......................................... 52 9.3 LANDING PATTERN RECOMMENDATION .................................................................................................. 53 9.4 MARKING ............................................................................................................................................ 54 9.5 MOISTURE SENSITIVITY LEVEL AND SOLDERING ..................................................................................... 55 9.6 TAPE AND REEL SPECIFICATION ............................................................................................................ 56 Rev. 1.10 Page 3 13 April 2011 © 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. Document is not intended for publication. BMA220 Data sheet Bosch Sensortec 9.7 ORIENTATION ...................................................................................................................................... 56 9.8 ROHS COMPLIANCY............................................................................................................................. 57 9.9 HALOGEN CONTENT ............................................................................................................................. 57 9.10 NOTE ON INTERNAL PACKAGE STRUCTURE .......................................................................................... 57 9.11 HANDLING INSTRUCTION .................................................................................................................... 57 10 LEGAL DISCLAIMER ........................................................................................................................... 58 10.1 ENGINEERING SAMPLES ..................................................................................................................... 58 10.2 PRODUCT USE ................................................................................................................................... 58 10.3 APPLICATION EXAMPLES AND HINTS .................................................................................................... 58 11 DOCUMENT HISTORY AND MODIFICATION .................................................................................... 59 Rev. 1.10 Page 4 13 April 2011 © 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. Document is not intended for publication. BMA220 Data sheet Bosch Sensortec 1 Specification If not stated otherwise, the given values are maximum values over lifetime and full performance temperature and voltage ranges. Min/max. data represent 3-sigma values. Table 1: Operating conditions, output signal and mechanical characteristics Parameter OPERATING CONDITIONS Symbol Condition Min gFS2g gFS4g Acceleration Range gFS8g switchable via serial digital interface gFS16g Supply Voltage Analog Domain VDDA Typ Max Units ±2.0 g ±4.0 g ±8.0 g ±16.0 g 1.62 1.8 1.98 1.8 1.98 V 3.6 V V Supply Voltage Digital Domain VDDD 1.62 Supply Voltage I/O Domain VDDIO 1.62 Voltage Input Low Level VIL SPI SPI 0.1*VDDIO V VIL I2C VIH SPI I²C 0.3*VDDIO V SPI 0.9*VDDIO V VIH I2C I²C 0.7*VDDIO V Voltage Input High Level Voltage Output High Level VOH Voltage Output Low Level SPI & I²C VDDIO V VOL SPI SPI GND V VOL I2C I²C, RP ≥ 680  0.2*VDDIO V Supply Current in Normal Mode IDD Nominal VDD supplies at TA=25°C 250 A Supply current in Low Power Mode IDDsl Nominal VDD supplies TA=25°C, BW = 1kHz sleep dur. > 25ms < 10 A Supply Current in Suspend Mode IDDsd Nominal VDD supplies at TA=25°C 8 data ‘11’ => 16 data whether x-axis has triggered the interrupt (0=no, 1=yes) whether y-axis has triggered the interrupt (0=no, 1=yes) whether z-axis has triggered the interrupt (0=no, 1=yes) give the slope sign of the triggering signal (0=positive, 1=negative) 3 “000” TT_TH_NUM 4 TT_TH_INIT “0110” TT_DUR_NUM 3 TT_DUR_INIT “101” 1 ‘1’ 1 ‘0’ 1 ‘0’ 2 ‘00’ 3 “000” 1 ‘0’ * For determining the corresponding I2C register address, please refer to figure 2 in chapter 4 (memory map) Table 10: Control and status register for tap sensing Rev. 1.10 Page 23 13 April 2011 © 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. Document is not intended for publication. BMA220 Data sheet Bosch Sensortec 5.6 Orientation recognition The orientation recognition feature informs on an orientation change of the sensor with respect to the gravitational field vector g. The measured acceleration vector components with respect to the gravitational field look as follows. Figure 8: Definition of acceleration-vector components z  x  y g [with respect to graviational field vector g (black dot = pin 1 identifier) ] acc_x = 1g·sin·cos acc_y = −1g·sin·sin acc_z = 1g·cos → acc_y/acc_x = −tan The output register is called orient and defined in the following way: ‘0xx’ upward looking (z>0): ‘000’ portrait upright (315°