sca3000-e05pwb VTI Hamlin, sca3000-e05pwb Datasheet
sca3000-e05pwb
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sca3000-e05pwb Summary of contents
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... Product Family Specification SCA3000 Series 3-axis accelerometer Doc.Nr. 8257300A.07 ...
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... Wide band measurement mode .................................................................................................8 2.2.2 Usage....................................................................................................................................8 2.2.2.1 Overflow condition ......................................................................................................................8 2.3 Motion Detection Mode .............................................................................................................9 2.3.1 Description...........................................................................................................................9 2.3.2 Usage..................................................................................................................................10 2.3.3 Examples............................................................................................................................10 2.4 Free-Fall Detection...................................................................................................................11 2.4.1 Description.........................................................................................................................11 2.4.2 Usage..................................................................................................................................11 2.4.3 Example..............................................................................................................................11 2.5 Ring Buffer ...............................................................................................................................12 2.5.1 Description.........................................................................................................................12 2.5.2 Usage..................................................................................................................................12 2.5.2.1 Overflow condition ....................................................................................................................12 2.5.3 Examples............................................................................................................................13 2.6 Temperature measurement.....................................................................................................13 2.6.1 Usage..................................................................................................................................13 2.7 Interrupt function (INT-pin) .....................................................................................................13 2.7.1 Usage..................................................................................................................................13 2.8 Clock .........................................................................................................................................14 VTI Technologies Oy www.vti.fi Doc.Nr. 8257300A.07 SCA3000 Series 2/ 43 Rev.A.07 ...
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... Digital I/O level shifter.......................................................................................................29 5.3.3 SPI AC characteristics ......................................................................................................30 2 5.3 characteristics .......................................................................................................31 6 Package Characteristics.................................................................................................. 31 6.1 Dimensions...............................................................................................................................31 7 Application information ................................................................................................... 32 7.1 Pin Description.........................................................................................................................32 7.2 Recommended circuit diagram ..............................................................................................32 7.3 Recommended PWB layout ....................................................................................................33 7.4 Assembly instructions ............................................................................................................35 7.5 Tape and reel specifications...................................................................................................35 8 Data sheet references ...................................................................................................... 36 VTI Technologies Oy www.vti.fi Doc.Nr. 8257300A.07 SCA3000 Series 3/ 43 Rev.A.07 ...
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... Offset.........................................................................................................................................36 8.1.1 Offset calibration error .....................................................................................................36 8.1.2 Offset temperature error...................................................................................................36 8.2 Sensitivity .................................................................................................................................37 8.2.1 Sensitivity calibration error..............................................................................................37 8.2.2 Sensitivity temperature error ...........................................................................................37 8.3 Linearity ....................................................................................................................................38 8.4 Noise .........................................................................................................................................39 8.5 Bandwidth.................................................................................................................................39 8.6 Cross-axis sensitivity ..............................................................................................................39 8.7 Turn-on time .............................................................................................................................40 9 Order Information............................................................................................................. 41 10 Document Change Control.............................................................................................. 42 11 Contact Information ......................................................................................................... 43 VTI Technologies Oy www.vti.fi Doc.Nr. 8257300A.07 SCA3000 Series 4/ 43 Rev.A.07 ...
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... SCA3000 is a three axis accelerometer family targeted for products requiring high performance with low power consumption. It consists of a 3D-MEMS sensing element and a signal conditioning ASIC packaged into a plastic Molded Interconnection Device package (MID). A block diagram of the SCA3000 product family is presented in Figure 1 below. C/V Oscillator Reference & ...
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... Internal 1.2.5 Operation modes 1.2.5.1 Measurement The SCA3000 is in normal measurement mode by default after start up. The sensor offers acceleration information via the SPI or I axis acceleration or all three axis acceleration depending on the application. Measurement resolution depends on the product type (see Table 1). 1.2.5.2 Motion Detection Motion Detection (MD) mode is intended to be used to save system level power consumption ...
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... Interrupt The SCA3000 has a dedicated output pin (INT used as the interrupt for the master controller. Interrupt conditions can be activated and deactivated via the SPI or I happened, the interrupt source can be read out from the corresponding status register. 1.2.8 Temperature output Some SCA3000 products provide 9-bit temperature information via the serial interface. See Table 1 for detailed product information ...
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... Optional measurement mode 2 2.2.1.1 Bypass measurement mode In bypass measurement mode, the signal bandwidth of the SCA3000 is extended by bypassing the low-pass filter in signal channel result of a wider measurement bandwidth, the noise level is higher. 2.2.1.2 Narrow band measurement mode In narrow band measurement mode, the signal bandwidth of the SCA3000 is reduced by increasing low-pass filtering in signal channel ...
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... In Table 4 the maximum and minimum acceleration register values that are in measuring range (for registers X_LSB … Z_MSB) for SCA3000-D0x and SCA3000-E0x are presented. Table 4. Maximum and minimum values in the SCA3000 measuring range. First positive [mg] ...
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... A simple example of motion detection usage: 1. Write "00000011" (03h) into the MODE register (enable motion detection mode, MODE_BITS = '011'). 2. Acceleration data is not available when the SCA3000 is in motion detection mode. 3. The INT-pin is activated when motion is detected, see section 2.7 for detailed INT-pin information. ...
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... Acceleration data is not available when the SCA3000 is in motion detection mode 8. The INT-pin is activated when motion is detected in the X- or Y-axis direction (Z-axis direction is ignored), see section 2.7 for detailed INT-pin information. 2.4 Free-Fall Detection 2.4.1 Description During free-fall in the gravitation field, all 3 orthogonal acceleration components are ideally equal to zero ...
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... Ring Buffer 2.5.1 Description The SCA3000's Ring Buffer is a 192 acceleration data samples long (64 samples of 11 bit three axis data) internal memory to relax the real-time operation requirements of the host processor. The following parameters are configurable: 1. Each measurement axis can be individually disabled. If measurement data from e.g. Y-axis is not needed, available memory can be used for X- and Z-axis data ...
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... Usage The Motion Detector and Free Fall Detector will generate an interrupt to INT-pin when the corresponding function is enabled and the interrupt condition is met. The SCA3000's ring buffer will generate an interrupt when interrupt functionality has been enabled. Setting BUF_F_EN bit in INT_MASK register "1" results in interrupt when the register is 75% full. Setting BUF_H_EN bit in INT_MASK register " ...
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... If BUF_FULL bit is "1", Ring Buffer is 75% full. Correspondingly, if BUF_HALF is "1", the Ring Buffer is 50% full. See section 3.3 for INT_STATUS register details. 2.8 Clock The SCA3000 has an internal factory trimmed oscillator and clock generator. Internal frequencies vary product by product. VTI Technologies Oy www.vti.fi Doc ...
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... Addressing Space The SCA3000 register contents and bit definitions are described in more detail in the following sections. 3.1 Register Description The SCA3000 addressing space is presented in Table 5 below. Table 5. List of registers. Addr. Name 00h REVID 01h 02h STATUS 03h 04h X_LSB 05h X_MSB 06h ...
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... Initial configuration values can be found in the following section 3.4. 3.3 Output Registers The SCA3000 output registers (marked with 'Output' in Table 5) contents and bit definitions are described in this section. Output registers contain information of measured acceleration and temperature as well as information of the operating state and interrupts of SCA3000. ...
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... Bit level description for acceleration data from X_LSB ... Z_MSB and BUF_DATA registers is presented in Table 6 ... Table 9. Acceleration data is presented in 2's complement format acceleration the output is ideally 00h. Table 6. Bit level description for acceleration registers of SCA3000-D01 and SCA3000-D02. Byte Bit number Acceleration [mg] SCA3000-D01,-D02 [X_LSB… ...
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... Table 8. Bit level description for acceleration registers of SCA3000-E04. Byte Bit number Acceleration [mg] SCA3000-E04 [X_LSB…Z_MSB] SCA3000-E04 Ring buffer in 11-bit mode [BUF_DATA] SCA3000-E04 Ring buffer in 8-bit mode [BUF_DATA sign bit x = not used bit Table 9. Bit level description for acceleration registers of SCA3000-E05. Byte ...
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... R 2:0 R 3.4 Configuration Registers SCA3000 configuration register (marked with 'Conf' in Table 5) contents and bit definitions are described in this section. Configuration registers are used to configure SCA3000 operation and the operation parameters. Address: 00h Register name: REVID, ASIC revision ID number tied in metal Bits Mode ...
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... Enabled 0 – Disabled (detection in power down) Reserved 000 MODE_BITS Selects SCA3000 series operation mode 000 – Normal measurement mode 010 – Optional measurement mode 1 (see Table 2) 001 – Optional measurement mode 2 (see Table 2) 011 – MD, Motion Detector Other combinations are reserved ...
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... Register name: MD_Z_TH, Motion Detector Z-threshold (Indirect access via CTRL_SEL) Initial Bits Value 7:0 10h or 08h Initial values for registers MD_X_TH, MD_Y_TH and MD_Z_TH vary with SCA3000 product types. Initial value is: • 10h for SCA3000-D01, SCA3000-D02, SCA3000-E01 and SCA3000-E02 • 08h for SCA3000-E04 and SCA3000-E05 The bit level descriptions for registers MD_X_TH, MD_Y_TH and MD_Z_TH are presented in, Table 11 ...
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... SCA3000-D02). Bit number SCA3000-D01, -D02 Acceleration [mg] MD_X_TH, MD_TH_Z SCA3000-D01, -D02 Acceleration [mg] MD_Y_TH x = not used bit Table 12. Bit level description for motion detector typical threshold levels (SCA3000-E01 and SCA3000-E02). Bit number SCA3000-E01, -E02 Acceleration [mg] MD_X_TH, MD_TH_Z SCA3000-E01, -E02 Acceleration [mg] MD_Y_TH x = not used bit Table 13 ...
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... INT active low (INT-pin low) Initial Name Description Value 00h DATA Data bits [7:0] of selected 8-bit control register. Write this register to actually perform the write operation to selected location. See register CTRL_SEL for information on register contents. Doc.Nr. 8257300A.07 SCA3000 Series 23/ 43 Rev.A.07 ...
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... Communication between the SCA3000 sensor and master controller is based on serial data transfer and a dedicated interrupt line (INT-pin). Two different serial interfaces are available for the SCA3000 sensor: SPI and I enabled by pre-programming in the factory. The SCA3000 acts as a slave on both the SPI and I bus. 4.1 SPI Interface SPI bus is a full duplex synchronous 4-wire serial interface ...
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... X_LSB (X-axis LSB frame). The sensor replies to the requested operation by transferring the register content MSB first. Figure 7. An example of SPI read communication. VTI Technologies Oy www.vti.fi th bit is set to '0' to indicate the read operation. Doc.Nr. 8257300A.07 SCA3000 Series 25/ 43 Rev.A.07 ...
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... The parity bit in Figure 4 is calculated and transferred only for the first data frame. From the X_LSB register address, the SCA3000 jumps to Z_MSB. Decremented reading is possible only for registers X_LSB ... Z_MSB. ...
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... 2-wire serial interface. It consists of one master device and one or more slave devices. The master is defined as a micro controller providing the serial clock (SCL), and the slave as any integrated circuit receiving the SCL clock from the master. The SCA3000 sensor always operates as a slave device in master-slave operation mode. When using an SPI addressing is used (slaves have dedicated CSB signals), the I addressing (slave devices have dedicated bit patterns as addresses) ...
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... CASE 2: I2C 16 bit write (any number of bytes can be written, length is determined by end condition generated by master) device addr 1st byte 11110AA CASE 3: I2C 8 bit read, read address for SCA3000 series register should be written to I2C_RD_SEL register device addr 1st byte 11110AA CASE 4: I2C 16 bit read (any number of bytes can be read, length is determined by end condition generated by master) ...
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... Digital I/O level shifter All the SCA3000 products have an internal level shifter that can be used to interface e.g. a micro controller using lower supply than the SCA3000. The level shifter is "programmed" by providing the supply voltage of the interfaced device to the DVIO-pin. Please refer to the corresponding product data sheet for details ...
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... SPI AC characteristics The AC characteristics of the SCA3000 SPI interface are defined in Figure 11 and in Table 17. T LS1 CSB SCK MOSI T VAL1 MISO Figure 11. Timing diagram for SPI communication. Table 17. AC characteristics of SPI communication. Parameter Terminal CSB, SCK Time from CSB (10 SCK (90%)1 Time from SCK (10%) ...
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... C AC characteristics Please, see Phillips Semiconductors, The I 33. 6 Package Characteristics 6.1 Dimensions The package dimensions are presented in Figure 12 below (dimensions in millimeters [mm] with ±50 µm tolerance). Figure 12. SCA3000 package dimensions. VTI Technologies Oy www.vti. bus specification, Version 2.1, January 2000, pp. 31- Doc.Nr. 8257300A.07 SCA3000 Series 4 · ...
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... Application information 7.1 Pin Description SCA3000 pin numbers are presented in Figure 14 below and pin descriptions in Table 18. Figure 13. SCA3000 sensing directions. Table 18. SCA3000 pin descriptions. Pin # Name XRESET 3 INT 4 CLK 5 DVSS 6 DVDD 7 DVIO 8 CSB SCK_SCL 12 MISO_SDA 13 MOSI 14 AVDD 15 AVSS 16 AVSS ...
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... Recommended circuit diagram for the SCA3000 with I 7.3 Recommended PWB layout General PWB layout recommendations for SCA3000 products (refer to Figure 15, Figure 16 and Figure 17): 1. Locate 100 nF SMD capacitors right next to the SCA3000 package µF capacitors can be located near the node where AVDD and DVDD are routed on separate ways ...
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... Recommended PWB pad layout for SCA3000 is presented in Figure 17 below (dimensions in millimeters, [mm]). Figure 17. Recommended PWB pad layout for SCA3000. Recommended PWB layout for the SCA3000 with SPI interface is presented in Figure 18 below (circuit diagram presented in Figure 15 above). Figure 18. Recommended PWB layout for SCA3000 with SPI interface (not actual size, for reference only) ...
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... Figure 19. Recommended PWB layout for SCA3000 with I for reference only). 7.4 Assembly instructions The Moisture Sensitivity Level (MSL) of the SCA3000 component is 3 according to the IPC/JEDEC J-STD-020C. Please refer to the document "TN54 SCA3000 Assembly Instructions" for more detailed information of SCA3000 assembly. 7.5 Tape and reel specifications Please refer to the document " ...
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... Data sheet references 8.1 Offset SCA3000's offset will be calibrated and measuring axis is parallel to earth’s gravitation) position, see Figure 20. X Pin #1 Figure 20. SCA3000 offset (0 g) position. 8.1.1 Offset calibration error Offset calibration error is the difference between the sensor's actual output reading and the nominal output reading in calibration conditions ...
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... During sensitivity calibration, the sensor is placed in ±1 g positions having one of the sensor’s measuring axis at a time parallel to the earth’s gravitation, see Figure 21. Pin #1 X Y-axis position Figure 21. SCA3000 positions for Y-axis sensitivity measurement. Sensitivity is calculated by Equation 4 Output = Sens − Y ...
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... Linearity The linearity error characterization method described below is applied for those SCA3000 series components that have measuring range ±3g or below. Accurate input acceleration needed in linearity characterization is generated using centrifugal force in centrifuge, see Figure 22. The RPM of the centrifuge is sweeped so that wanted input acceleration values are applied in parallel to the sensor’ ...
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... Sens is sensor’s nominal sensitivity [counts/g] and FS is sensor’s full scale measuring range [g] (for example for SCA3000-D01 ±2g → g). Sensor’s ideal output Output sensitivity calibration points (the red straight line in Figure 23). Nominal output is calculated by Equation 8 − ...
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... Turn-on time is the time when the last of one axis output readings stabilizes into its final value after XRESET is pulled high. The final value limits in turn-on time measurements is defined to be ± the sensor’s full scale measuring range (for example for SCA3000-D01 ±2g → g). Turn-on time definition for Z-axis is presented in Figure 25 below. ...
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... SPI interface, +/-18g, 2500 pcs SCA3000-D01 PWB PWB assy, 3-Axis accelerometer with SPI interface, +/-2g SCA3000-D02 PWB PWB assy, 3-Axis accelerometer with I2C interface, +/-2g SCA3000-E01 PWB PWB assy, 3-Axis accelerometer with SPI interface, +/-3g SCA3000-E02 PWB PWB assy, 3-Axis accelerometer with I2C interface, +/-3g SCA3000-E04 PWB ...
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... MD threshold levels Updated: A.01 27.06.2006 - document name changed to "SCA3000 Product Family Specification" - section "6.1 Package dimensions" updated - section "9.1 Packing and handling" updated to "7.5 Tape and reel specifications" Contact information A.02 30.6.2006 Order information added A ...
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... Cailun Lu Pudong New Area 201203 Shanghai P.R. China Tel. +86 21 5132 0417 Fax +86 21 513 20 416 E-mail: sales.china@vti.fi Doc.Nr. 8257300A.07 SCA3000 Series USA VTI Technologies, Inc. One Park Lane Blvd. Suite 804 - East Tower Dearborn, MI 48126 USA Tel. +1 313 425 0850 Fax +1 313 425 0860 E-mail: sales@vtitechnologies ...