Datasheet ADIS16495 (Analog Devices) - 6

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Data Sheet ADIS16495 TIMING SPECIFICATIONS
TC = 25°C, VDD = 3.3 V, unless otherwise noted.
Table 2. Normal Mode Burst Read Function Parameter Description Min1 Typ Max1 Min Typ Max1 Unit
fSCLK SCLK frequency 0.01 15 6.5 MHz t 2 STALL Stall period between data 2 N/A µs tCLS SCLK low period 31 31 ns tCHS SCLK high period 31 31 ns t CS to SCLK edge 32 32 ns CS tDAV DOUT valid after SCLK edge 10 10 ns tDSU DIN setup time before SCLK rising edge 2 2 ns tDHD DIN hold time after SCLK rising edge 2 2 ns tDR, tDF DOUT rise/fall times, ≤100 pF loading 3 8 3 8 ns tDSOE CS assertion to DOUT active 0 11 0 11 ns tHD SCLK edge to DOUT invalid 0 0 ns tSFS Last SCLK edge to CS deassertion 32 32 ns tDSHI CS deassertion to DOUT high impedance 0 9 0 9 ns tNV Data invalid time 20 20 µs t1 Input sync pulse width 5 5 µs t2 Input sync to data invalid 306 306 µs t3 Input sync period3 222.2 222.2 µs 1 Guaranteed by design and characterization, but not tested in production. 2 See Table 3 for exceptions to the stal time rating. 3 This measurement represents the inverse of the maximum frequency for the input sample clock: 4500 Hz.
Register Specific Stall Times Table 3. Parameter Description Min1 Typ Max Unit
STALL TIME FNCTIO_CTRL Configure the DIOx functions 340 μs FILTR_BNK_0 Enable/select finite impulse response (FIR) filter banks 65 μs FILTR_BNK_1 Enable/select FIR filter banks 65 μs NULL_CNFG Configure autonull bias function 71 μs SYNC_SCALE Configure input clock scale factor 340 μs DEC_RATE Configure decimation rate 340 μs GPIO_CTRL Configure general-purpose input/output (I/O) lines 45 μs CONFIG Configure miscellaneous functions 45 μs GLOB_CMD, Bit 1 On demand self test 20 ms GLOB_CMD, Bit 3 Flash memory update 1120 ms GLOB_CMD, Bit 6 Factory calibration restore 350 μs GLOB_CMD, Bit 7 Software reset 210 ms 1 Monitoring the data ready signal (see Table 144 for FNCTIO_CTRL configuration) for the return of regular pulsing can help minimize system wait times. Rev. A | Page 5 of 39 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS Register Specific Stall Times Timing Diagrams ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION INERTIAL SENSOR SIGNAL CHAIN Gyroscope Data Sampling Accelerometer Data Sampling External Clock Options Inertial Sensor Calibration Gyroscope Factory Calibration Accelerometer Factory Calibration Filtering REGISTER STRUCTURE SERIAL PERIPHERAL INTERFACE DATA READY READING SENSOR DATA Burst Read Function DEVICE CONFIGURATION Dual Memory Structure USER REGISTER MEMORY MAP USER REGISTER DEFINTIONS PAGE NUMBER (PAGE_ID) DATA/SAMPLE COUNTER (DATA_CNT) STATUS/ERROR FLAG INDICATORS (SYS_E_FLAG) SELF TEST ERROR FLAGS (DIAG_STS) INTERNAL TEMPERATURE (TEMP_OUT) GYROSCOPE DATA Gyroscope Measurement Range/Scale Factor Gyroscope Data Formatting X-Axis Gyroscope (X_GYRO_LOW, X_GRYO_OUT) Y-Axis Gyroscope (Y_GYRO_LOW, Y_GYRO_OUT) Z-Axis Gyroscope (Z_GYRO_LOW, Z_GYRO_OUT) ACCELERATION DATA X-Axis Accelerometer (X_ACCL_LOW, X_ACCL_OUT) Y-Axis Accelerometer (Y_ACCL_LOW, Y_ACCL_OUT) Z-Axis Accelerometer (Z_ACCL_LOW, Z_ACCL_OUT) Accelerometer Resolution TIME STAMP CYCLICAL REDUNDANDCY CHECK (CRC-32) DELTA ANGLES Delta Angle Measurement Range X-Axis Delta Angle (X_DELTANG_LOW, X_DELTANG_OUT) Y-Axis Delta Angle (Y_DELTANG_LOW, Y_DELTANG_OUT) Z-Axis Delta Angle (Z_DELTANG_LOW, Z_DELTANG_OUT) Delta Angle Resolution DELTA VELOCITY X-Axis Delta Velocity (X_DELTVEL_LOW, X_DELTVEL_OUT) Y-Axis Delta Velocity (Y_DELTVEL_LOW, Y_DELTVEL_OUT) Z-Axis Delta Velocity (Z_DELTVEL_LOW, Z_DELTVEL_OUT) Delta Velocity Resolution Burst Read Command, BURST_CMD Product Identification, PROD_ID USER BIAS/SCALE ADJUSTMENT Gyroscope Scale Adjustment, X_GYRO_SCALE Gyroscope Scale Adjustment, Y_GYRO_SCALE Gyroscope Scale Adjustment, Z_GYRO_SCALE Accelerometer Scale Adjustment, X_ACCL_SCALE Accelerometer Scale Adjustment, Y_ACCL_SCALE Accelerometer Scale Adjustment, Z_ACCL_SCALE Gyroscope Bias Adjustment, XG_BIAS_LOW, XG_BIAS_HIGH Gyroscope Bias Adjustment, YG_BIAS_LOW, YG_BIAS_HIGH Gyroscope Bias Adjustment, ZG_BIAS_LOW, ZG_BIAS_HIGH Accelerometer Bias Adjustment, XA_BIAS_LOW, XA_BIAS_HIGH Accelerometer Bias Adjustment, YA_BIAS_LOW, YA_BIAS_HIGH Accelerometer Bias Adjustment, ZA_BIAS_LOW, ZA_BIAS_HIGH SCRATCH REGISTERS, USER_SCR_X FLASH MEMORY ENDURANCE COUNTER, FLSHCNT_LOW, FLSHCNT_HIGH GLOBAL COMMANDS, GLOB_CMD Software Reset Clear User Calibration Flash Memory Update On Demand Self Test (ODST) Bias Correction Update AUXILIARY I/O LINE CONFIGURATION, FNCTIO_CTRL Data Ready Indicator Input Sync/Clock Control GENERAL-PURPOSE I/O CONTROL, GPIO_CTRL MISCELLANEOUS CONFIGURATION, CONFIG Point of Percussion LINEAR ACCELERATION ON EFFECT ON GYROSCOPE BIAS DECIMATION FILTER, DEC_RATE CONTINUOUS BIAS ESTIMATION (CBE), NULL_CNFG SCALING THE INPUT CLOCK (PPS MODE), SYNC_SCALE Measurement Range Identifier, RANG_MDL FIR FILTERS FIR Filters Control, FILTR_BNK_0, FILTR_BNK_1 FIR Filter Bank Memory Maps FIR Filter Bank A, FIR_COEF_A000 to FIR_COEF_A119 FIR Filter Bank B, FIR_COEF_B000 to FIR_COEF_B119 FIR Filter Bank C, FIR_COEF_C000 to FIR_COEF_C119 FIR Filter Bank D, FIR_COEF_D000 to FIR_COEF_D119 Default Filter Performance FIRMWARE REVISION, FIRM_REV Firmware Revision Year, FIRM_Y Boot Revision Number, BOOT_REV Continuous SRAM Testing Signature CRC, Calibration Values, CAL_SIGTR_LWR Signature CRC, Calibration Values, CAL_SIGTR_UPR Derived CRC, Calibration Values, CAL_DRVTN_LWR Derived CRC, Calibration Values, CAL_DRVTN_UPR Signature CRC, Program Code, CODE_SIGTR_LWR Signature CRC, Program Code, CODE_SIGTR_UPR Derived CRC, Program Code, CODE_DRVTN_LWR Derived CRC, Program Code, CODE_DRVTN_UPR Lot Specific Serial Number, SERIAL_NUM APPLICATIONS INFORMATION MOUNTING BEST PRACTICES PREVENTING MISINSERTION EVALUATION TOOLS Breakout Board, ADIS16IMU1/PCBZ PC-Based Evaluation, EVAL-ADIS2 POWER SUPPLY CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE