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har dwar e documentation har 24xy high-precision dual-die programmable linear hall-effect sensor family edition july 14, 2015 dsh000170_001en data sheet
har 24xy data sheet 2 july 14, 2015; dsh000170_001en micronas copyright, warranty, and limitation of liability the information and data contained in this document are believed to be accurate and reliable. the software and proprietary information contained therein may be protected by copyright, patent, trademark and/or other intellectual property rights of micronas. all rights not expressly granted remain reserved by micronas. micronas assumes no liabilit y for errors and gives no warranty representation or guarantee regarding the suitability of its products for any particular purpose due to these specifications. by this publication, micronas does not assume respon- sibility for patent infringement s or other rights of third parties which may result from its use. commercial con- ditions, product availability and delivery are exclusively subject to the respective order confirmation. any information and data whic h may be provided in the document can and do vary in different applications, and actual performance may vary over time. all operating parameters must be validated for each customer application by customers? technical experts. any new issue of this document invalidates previous issues. micronas reserves the right to review this docu- ment and to make changes to the document?s content at any time without obligation to notify any person or entity of such revision or changes. for further advice please contact us directly. do not use our products in life-supporting systems, military, aviation, or aero space applications! unless explicitly agreed to otherwise in writing between the parties, micronas? products are not designed, intended or authorized for use as components in systems intended for surgical implants into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the product could create a situation where personal injury or death could occur. no part of this publication may be reproduced, photo- copied, stored on a retrieval system or transmitted without the express written consent of micronas. micronas trademarks ?hal third-party trademarks all other brand and product names or company names may be trademarks of their respective companies.
contents page section title micronas july 14, 2015; dsh000170_001en 3 data sheet har 24xy 4 1. introduction 4 1.1. major applications 51.2.features 6 2. ordering information 6 2.1. device-specif ic ordering codes 7 3. functional description 7 3.1. general function 9 3.2. signal path and register definition 9 3.2.1. signal path 10 3.2.2. register definition 10 3.2.2.1. ram registers 12 3.2.2.2. eeprom registers 14 3.2.2.3. nvram registers 15 3.2.2.4. setpoint linearization accuracy 16 3.3. on-board diagnostic features 18 3.4. calibration of the sensor 19 4. specifications 19 4.1. outline dimensions 21 4.2. soldering, welding and assembly 21 4.3. pin connections and short descriptions 21 4.4. dimensions of sensitive area 21 4.5. package parameter and position of sensitive areas 22 4.6. absolute maximum ratings 22 4.7. storage and shelf life 23 4.8. recommended operating conditions 24 4.9. characteristics 26 4.10. open-circuit detection 26 4.11. overvoltage and undervoltage detection 27 4.12. output short detection parameter 27 4.13. output voltage in case of error detection 28 4.14. magnetic characteristics 29 4.14.1. definition of sensitivity error es 30 5. application notes 30 5.1. application circuit 30 5.2. measurement of a pwm output signal of har 2455 30 5.3. ambient temperature 30 5.4. pad size layout 31 6. programming of the sensor 31 6.1. programming interface 32 6.2. programming environment and tools 32 6.3. programming information 33 7. data sheet history
har 24xy data sheet 4 july 14, 2015; dsh000170_001en micronas high-precision dual-die programmable linear hall-effect sensor family release note: revision bars indicate significant changes to the previous edition. 1. introduction har 24xy is a dual-die programmable linear hall- effect sensor family. it provides redundancy as it con- sists of two independent dies stacked in a single pack- age, each bonded to a separate side of the leadframe. the stacked-die architecture ensures that both dies occupy the same magnetic field position, thus generat- ing synchronous measurement outputs. the integrated dies are two hal 24xy, universal mag- netic field sensors with linear analog or pwm outputs based on the hall effect. for both dies major charac- teristics like magnetic field range, sensitivity, output quiescent voltage (output voltage at b=0 mt), and out- put voltage range are programmable in non-volatile memories. the output characteristics are ratiometric, which means that the output voltages are proportional to the magnetic flux and the supply voltage. addition- ally, both dies offer wire-break detection. each die of the har 24xy offers 16 setpoints to change the output characteristics from linear to arbi- trary or vice versa. they feature temperature-compen- sated hall plates with spinning current offset compen- sation, a/d converters, digital signal processing, d/a converters with output driver (har 2425), programma- ble pwm output module s (har 2455), eeproms with redundancy and lock function for calibration data, serial interfaces for programming the eeproms, and protection devices at all pins. the internal digital signal processing prevents the signal being influenced by analog offsets, temperature shifts, and mechanical stress. the easy programmability allows individual adjustment of each har 24xy during the final manufacturing pro- cess by means of a 2-point calibration, by adjusting the output signals directly to the input signal (like mechani- cal angle, distance, or current). with this calibration procedure, the tolerances of the sensor, the magnet-, and the mechanical positioning can be compensated in the final assembly. in addition, the temperature compensation of the hall ics can be fit to all common magnetic materials by programming first- and second-order temperature coefficients of the hall sensor sensitivity. it is also possible to compensate offset drift over tem- perature generated by the customer application with a first-order temperature coefficient for the sensors off- set. this enables operation over the full temperature range with a high accuracy. the calculation of the individual sensors characteris- tics and the programming of the corresponding eeproms can easily be done with a pc and the appli- cation kit from micronas. the sensors are designed for stringent industrial and automotive applications and are aecq100 qualified. they operate with typically 5 v supply volt- age in the junction temperature range from ? 40 c up to 170 c. the hal 24xy is available in the ultra- thin shrink small outline 14 leads package tssop14- 1. 1.1. major applications thanks to its redundancy capability, har 24xy can address safety-critical applications. the sensors? ver- satile programming characteristics and low tempera- ture drifts make the har 24xy the optimal system solution for: ? angular measurements: throttle position, pedal position, steering torque and egr applications; ? distance and linear movement measurements in safety-critical applications ? magnetic field and current measurement with spe- cific resolution over different ranges, by appropriate sensitivity programming for each die.
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 5 1.2. features high-precision, redundant, linear hall-effect sensor with two independent 12-bit analog outputs (har 2425) or with two independent pwm outputs up to 2 khz (har 2455). each die provides: ? 16 setpoints for various output signal shapes ? 16 bit digital signal processing ? multiple customer-programmable magnetic charac- teristics in a non-volatile memory with redundancy and lock function ? programmable temperature compensation for sensi- tivity and offset ? magnetic field measurements in the range up to ? 200 mt ? low output voltage drifts over temperature ? active open-circuit (ground and supply line break detection) with 5 k ? pull-up and pull-down resistor, overvoltage and undervoltage detection ? programmable clamping function ? digital readout of temperature and magnetic field information in calibration mode ? programming and operation of multiple sensors at the same supply line ? active detection of output short between two sensors ? high immunity against mechanical stress, esd, and emc ? operation from t j = ? 40 c up to 170 c ? operation from 4.5 v up to 5.5 v supply voltage in specification and functions up to 8.5 v ? operation with static magnetic fields and dynamic magnetic fields up to 2 khz ? overvoltage and reverse-voltage protection at all pins ? short-circuit protected push-pull output
har 24xy data sheet 6 july 14, 2015; dsh000170_001en micronas 2. ordering information a micronas device is available in a variety of delivery forms. they are distinguished by a specific ordering code: fig. 2?1: ordering code principle for a detailed information, please refer to the bro- chure: ?hall sensors: ordering codes, packaging, handling?. 2.1. device-specific ordering codes the har 24xy is available in the following package and temperature variants. the relationship between ambient temperature (t a ) and junction temperature (t j ) is explained in section 5.3. on page 30. for available variants for configuration (c), packaging (p), quantity (q), and special procedure (sp) please contact micronas. xxx nnnn pa-t-c-p-q-sp further code elements temperature range package product type product group table 2?1: available packages package code (pa) package type gp tssop14-1 table 2?2: available temperature ranges temperature code (t) temperature range at j = ? 40 c to +170 c table 2?3: available ordering codes and corresponding package marking ordering code package marking HAR2425gp-a-[c-p-q-sp] HAR2425a har2455gp-a-[c-p-q-sp] har2455a
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 7 3. functional description 3.1. general function har 24xy is a dual-die integrated circuit. the two dies have independent pins for power supply, ground, and output to guaranty full redundancy. due to the stacked assembly they are in the same magnetic field position, and thereby generating synchronous measurement outputs. the har 2425 provides redundant output voltages proportional to the magnetic flux through the hall plates and proportional to the supply voltage (rati- ometric behavior). the har 2455 offers pwm outputs. the external magnetic field component perpendicular to the branded side of the package generates a hall voltage. the hall ic is sensitive to magnetic north and south polarity. for each die this voltage is converted to a digital value, processed in the digital signal process- ing unit (dsp) according to the settings of the eeprom registers, converted back to an analog volt- age with ratiometric behavior and buffered by a push- pull output transistor stage (har 2425) or output as pwm signal (har 2455). the setting of a lock bit disables the programming of the eeprom memory for all time. this bit cannot be reset by the customer. as long as the lock bit is not set, the output charac- teristic can be adjusted by programming the eeprom registers. the ic is addressed by modulating the out- put voltage. in the supply voltage range from 4.5 v up to 5.5 v, the sensor generates an analog output voltage (har 2425) or a pwm signal (har 2455). after detecting a command, the sensor reads or writes the memory and answers with a digital signal on the output pin. the analog output is switched off during the com- munication. several sensors in parallel to the same supply and ground line can be programmed individually. the selection of each sensor is done via its output pin. see programming guide hal 24xy and har 24xy. the open-circuit detection provides a defined output voltage if the vsup or gnd line is broken. internal temperature compensation circuitry and the spinning-current offset compensation enable operation over the full temperature range with minimal changes in accuracy and high offset stability. the circuitry also reduces offset shifts due to mechanical stress from the package. in addition, the sensor ic is equipped with overvoltage and reverse-voltage protection at all pins. fig. 3?1: HAR2425 block diagram out2 vsup2 gnd2 internally temperature oscillator switched a/d digital out1 vsup1 gnd1 eeprom memory lock control stabilized supply and protection devices dependent bias protection devices hall plate converter signal processing temperature a/d sensor converter programming interface linearization open-circuit, overvoltage, undervoltage detection analog output d/a converter 16 setpoints
har 24xy data sheet 8 july 14, 2015; dsh000170_001en micronas fig. 3?2: har 2455 block diagram out2 vsup2 gnd2 internally temperature oscillator switched a/d digital out1 vsup1 gnd1 eeprom memory lock control stabilized supply and protection devices dependent bias protection devices hall plate converter signal processing temperature a/d sensor converter programming interface linearization open-circuit, overvoltage, undervoltage detection 16 setpoints pwm output
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 9 3.2. signal path and register definition 3.2.1. signal path fig. 3?3: signal path of HAR2425 (identical for both dies) fig. 3?4: signal path of har 2455 (identical for both dies) a d hall-plate micronas offset & gain tr i m m i n g customer offset & gain trimming setpoint linearization dac gain & offset scaling dac drift compensation output clamping dac - c - micronas temp-sensor trimming temp-sensor cfx mic_comp cust_comp setpt gainoff dac temp_adj barrel shifter (magnetic ranges) output clamping setpt_in gain & offset scaling block a d hall-plate micronas offset & gain tr i m m i n g customer offset & gain trimming setpoint linearization dac gain & offset scaling output pwm - c - micronas temp-sensor trimming temp-sensor cfx mic_comp cust_comp setpt gainoff temp_adj barrel shifter (magnetic ranges) output clamping setpt_in gain & offset scaling block clamping modulator out dac
har 24xy data sheet 10 july 14, 2015; dsh000170_001en micronas 3.2.2. register definition the dsp is the major part of each die and performs the signal conditioning. the parameters for the dsp are stored in the eeprom r egisters. the details are shown in fig. 3?5 and fig. 3?7. terminology: gain: name of the register or register value gain: name of the parameter the sensors signal path contains two kinds of regis- ters. registers that are readout only (ram) and pro- grammable registers (eeprom & nvram). the ram registers contain measurement data at certain posi- tions of the signal path and the eeprom registers have influence on the sensors signal processing. 3.2.2.1. ram registers temp_adj the temp_adj register contains the calibrated tem- perature sensor information. temp_adj can be used for the sensor calibration over temperature. this regis- ter has a length of 16 bit and it is two?s-complement coded. therefore the register value can vary between ? 32768...32767. cfx the cfx register is representing the magnetic field information directly after a/d conversion, decimation filter and magnetic range (barrel shifter) selection. the register content is not temperature compensated. the temperature variation of this register is specified in section 4.14. on page 28 by the parameter range abs . note: during application design, it must be taken into consideration that cfx should never overflow in the operational range of the specific application and especially over the full temperature range. in case of a potential overflow the barrel shifter should be switched to the next higher range. this register has a length of 16 bit and it is two?s-com- plement coded. therefore the register value can vary between ? 32768...32767. cfx register values will increase for positive magnetic fields (south pole) on the branded side of the package (positive cfx values) and it will decrease with negative magnetic field polarity. mic_comp the mic_comp register is representing the magnetic field information directly after the micronas tempera- ture trimming. the register content is temperature compensated and has a typical gain drift over temper- ature of 0 ppm/k. also the offset and its drift over tem- perature is typically zero. the register has a length of 16 bit and it is two?s-complement coded. therefore the register value can vary between ? 32768...32767. cust_comp the cust_comp register is representing the mag- netic field information after the customer temperature trimming. for har 2425 it is possible to set a cus- tomer specific gain of second order over temperature as well as a customer specific offset of first order over temperature. the customer gain and offset can be set with the eeprom registers tcco0, tcco 1 for offset and tccg0...tccg2 for gain . details of these regis- ters are described on the following pages. the register has a length of 16 bit and it is two?s-com- plement coded. therefore the register value can vary between ? 32768...32767. setpt_in the setpt_in register offe rs the possibility to read the magnetic field information after the scaling of the input signal to the input range of the linearization block. for further details see the description of the eeprom registers scale_gain and scale_offset that are described in the next chap- ter. the register has a length of 16 bit and it is two?s-com- plement coded. therefor the register value can vary between ? 32768...32767. setpt the setpt register offers the possibility to read the magnetic field information after the linearization of the magnetic field information with 16 setpoints. this infor- mation is also required for the correct setting of the sensors dac gain and offset in the following block. the register has a length of 16 bit and it is two?s-com- plement coded. therefore the register value can vary between ? 32768...32767.
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 11 gainoff the gainoff register offers the possibility to read the magnetic field information after the dac gain and offset scaling. this register has a length of 16 bit and it is two?s-com- plement coded. therefore the register value can vary between ? 32768...32767. dac the dac register offers the possibility to read the mag- netic field information at the end of the complete signal path. the value of this register is then converted into an analog output voltage. the register has a length of 16 bit and it is two?s-com- plement coded. therefore the register value can vary between ? 32768...32767. mic_id1 and mic_id2 the two registers mic_id1 and mic_id2 are used by micronas to store production information like, wafer number, die position on wafer, production lot, etc. both registers have a length of 16 bit each and are readout only. pwm frequency the pwm frequency is selectable by 2 bits, which are part of the customer setup register (bits 11:10). the customer setup register is described on the following pages. the following four different frequen- cies can be used: diagnosis the diagnosis register enables the customer to identify certain failures detected by the sensor. har 2425 performs certain self tests during power-up of the sensor and also during normal operation. the result of these self tests is stored in the diagnosis register. diagnosis register is a 16 bit register. details on the sensor self tests can be found in section 3.3. on page 16. prog_diagnosis the prog_diagnosis register enables the cus- tomer to identify errors occurring during programming and writing of the eeprom or nvram memory. the customer must either check the status of this register after each write or program command or alternatively the second acknowledge. please check the program- ming guide for hal 24xy. the prog_diagnosis register is a 16 bit register. the following table shows the different bits indicating certain errors possibilities. table 3?1: selectable pwm frequencies pwm_freq frequency resolution bit 11 bit 10 1 1 2 khz 11 bit 0 0 1 khz 12 bit 0 1 500 hz 12 bit 1 0 250 hz 12 bit bit no. function description 15:6 none reserved 5 state machine (dsp) self test this bit is set to 1 in case that the statemachine self test fails. (continuously running) 4 eeprom self test this bit is set to 1 in case that the eeprom self test fails. (performed during power-up only) 3 rom check this bit is set to 1 in case that rom parity check fails. (continuously running) 2ad converter overflow this bit is set to 1 in case the input signal is too high, indicating a problem with the magnetic range. 1:0 none reserved bit no. function description 15:11 none reserved 10 charge pump error this bit is set to 1 in case that the internal programming voltage was to low 9 voltage error during program/ erase this bit is set to 1 in case that the internal supply voltage was to low during program or erase 8 nvram error this bit is set to 1 in case that the programming of the nvram failed 7:0 memory programming for further information please refer to the programming guide for hal 242x
har 24xy data sheet 12 july 14, 2015; dsh000170_001en micronas 3.2.2.2. eeprom registers fig. 3?5: details of eeprom and digital signal processing for har 2425 (equal for both dies). fig. 3?6: details of eeprom and digital signal processing for har 2455 (equal for both dies). a d hall-plate barrel shifter (magnetic ranges) micronas offset & gain trimming customer offset & gain trimming setpoint linearization dac gain & offset scaling dac drift compensation output clamping dac - c - micronas temp-sensor trimming temp-sensor customer setup digital signal processing tccgx tccox setpointx scale_offset scale_gain dac_offset dac_gain dac_cmplo dac_cmphi eeprom offset & gain scaling a d hall-plate barrel shifter (magnetic ranges) micronas offset & gain trimming customer offset & gain trimming setpoint linearization dac gain & offset scaling output clamping pwm - c - micronas te m p - s e n s o r trimming temp-sensor customer setup digital signal processing tccgx tccox setpointx scale_offset scale_gain dac_offset dac_gain dac_cmplo dac_cmphi eeprom offset & gain scaling out
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 13 cust_id1 and cust_id2 the two registers cust_id1 and cust_id2 can be used to store customer information. both registers have a length of 16 bit each. barrel shifter (magnetic ranges) the signal path of har 24xy contains a barrel shifter to emulate magnetic ranges. the customer can select between different magnetic ranges by changing the barrel shifter setting. after decimation filter the signal path has a word length of 22 bit. the barrel shifter selects 16 bit out of the available 22 bit. the barrel shifter bits are part of the customer setup register (bits 14...12). the customer setup register is describ ed on the following pages. note: in case that the external field exceeds the mag- netic field range the cfx register will be clamped either to ? 32768 or 32767 depending on the sign of the magnetic field. magnetic sensitivity tccg the tccg (sensitivity) registers (tccg0...tccg2) contain the customer setting temperature dependant gain factor. the multiplication factor is a second order polynomial of the temperature. all three polynomial coefficients have a bit length of 16 bit and they are two?s-complement coded. therefore the register values can vary between ? 32768...32767. in case that the target polynomial is based on normal- ized values, then each coefficient can vary between ? 4 ... +4. to store each coefficient into the eeprom it is necessary to multiply the normalized coefficients with 32768. example: ? tccg0 = 0.5102 => tccg0 = 16719 ? tccg1 = ? 0.0163 => tccg1 = ? 536 ? tccg2 = 0.0144 => tccg2 = 471 in case that the polynomia l was calculated based on not normalized values of temp_adj and mic_comp, then it is not necessary to multiply the polynomial coef- ficients with a factor of 32768. magnetic sensitivity tcco the tcco (offset) registers (tcco0 and tcco1) contain the parameters for temperature dependant off- set correction. the offset value is a first order polyno- mial of the temperature. both polynomial coefficients have a bit length of 16 bit and they are two?s-complement coded. therefore the register values can vary between ? 32768...32767. in case that the target polynomial is based on normal- ized values, then each coefficient can vary between ? 4 ... +4. to store each coefficient into the eeprom it is necessary to multiply the normalized coefficients with 32768. in case that the polynomia l was calculated based on not normalized values of temp_adj and mic_comp, then it is not necessary to multiply the polynomial coef- ficients. in addition har 24xy features a linearization function based on 16 setpoints. the setpoint linearization in general allows to linearize a given output characteristic by applying the inverse compensation curve. each of the 16 setpoints (setpt) registers have a length of 16 bit. the setpoints have to be computed and stored in a differential way. this means that if all setpoints are set to 0, then the linearization is set to neutral and a linear curve is used. sensitivity and offset scaling before setpoint linearization scale_gain/scale_offset the setpoint linearization uses the full 16 bit number range 0...32767 (only positive values possible). so the signal path should be properly scaled for optimal usage of all 16 setpoints. for optimum usage of the number range an additional scaling stage is added in front of the set point algo- rithm. the setpoint algorithm allows positive input numbers only. the input scaling for the linearization stage is done with the eeprom registers scale_gain and scale_offset. the register content is calculated based on the calibration angles. both registers have a bit length of 16 bit and are two?s-complemented coded. table 3?2: relation between barrel shifter setting and emulated magnetic range barrel shifter used bits typ. magnetic range 0 22...7 not used 1 21...6 ?? 200 mt 2 20...5 ?? 100 mt 3 19...4 ? 50 mt 4 18...3 ? 25 mt 5 17...2 ?? 12 mt 6 16...1 ? 6mt
har 24xy data sheet 14 july 14, 2015; dsh000170_001en micronas analog output signal scaling with dac_gain/ dac_offset (har 2425) the required output voltage range of the analog output is defined by the registers dac_gain (gain of the out- put) and dac_offset (offset of the output signal). both register values can be calculated based on the angular range and the required output voltage range. they have a bit length of 16 bit and are two?s-comple- mented coded. output signal scaling with dac_gain/ dac_offset (har 2455) the required output duty cycle of the output is defined by the registers dac_gain (gain of the output) and dac_offset (offset of the output signal). both regis- ter values can be calculated based on the angular range and the required output pwm duty cycle range. they have a bit length of 16 bit and are two?s-comple- mented coded. clamping levels the clamping levels dac_cmphi and dac_cmplo define the maximum and minimum output voltage of the analog output. the clamping levels can be used to define the diagnosis band for the sensor output. both registers have a bit length of 16 bit and are two?s-com- plemented coded. both clamping levels can have val- ues between 0% and 100% of v sup . 3.2.2.3. nvram registers customer setup the cust_setup register is a 16 bit register that enables the customer to activate various functions of the sensor like, customer burn-in mode, diagnosis modes, functionality mode, customer lock, etc. the output short detection feature is implemented to detect a short circuit between two sensor outputs. the customer can define how the sensor should signalize a detected short circuit (see table above). the time inter- val in which the sensor is checking for an output short and the detectable short circuit current are defined in section 4.12. on page 27. this feature should only be used in case that two sen- sors are used in one module. in case that the output short detection is not active both sensors will try to drive their output voltage and the resulting voltage will be within the valid signal band. note: the output short detection feature is only active after setting the customer lock bit and a power-on reset. table 3?3: functions in cust_setup register bit no. function description 15 none reserved 14:12 barrel shifter magnetic range (see section table 3?2: on page 13) 11:10 none (har 2425) reserved pwm frequency setting (har 2455) pwm frequency selection (see table 3?1 on page 11) 9:8 output short detection 0: disabled 1: high & low side over current detection -> out = v sup in error case 2: high & low side over current detection -> out = gnd in error case 3: low side over current detection -> out = tristate in error case 7 error band (har 2425) error band selection for locked devices (customer lock bit set). 0: high error band (v sup ) 1: low error band (gnd) the sensor will always go to high error band as long as it is not locked (customer lock bit not set). (see section 4.13. on page 27) pwm output polarity (op) (har 2455) 0: pwm period starts with a high pulse 1: pwm period starts with a low pulse (effective after lc=1) 6 none reserved 5 functionality mode supply voltage supervision 0: extended: undervoltage (por) 3.8 v, overvoltage 9 v 1: normal: undervoltage (por) 4.2 v, overvoltage 6 v 4 communication mode (pout) communication via output pin 0: disabled 1: enabled 3 overvoltage detection 0: overvoltage detection active 1: overvoltage detection disabled 2 diagnosis latch latchi ng of diagnosis bits 0: no latching 1: latched till next por (power-on reset) 1 diagnosis (har 2425) 0: diagnosis errors force output to the selected error band 1: diagnosis errors do not force output to the selected error band diagnosis (har 2455) 0: diagnosis errors force the pwm output into error mode (see table 3?5 on page 18) 1: diagnosis errors do not force the pwm output into error mode 0 customer lock bit must be set to 1 to lock the sensor memory table 3?3: functions in cust_setup register bit no. function description
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 15 3.2.2.4. setpoint linearization accuracy the set point linearization in general allows to linearize a given output characteristic by applying the inverse compensation curve. for this purpose the co mpensation curve will be divided into 16 segments with equal distance. each segment is defined by two setpoints, which are stored in eeprom. within the interv al, the output is calcu- lated by linear interpolatio n according to the position within the interval. fig. 3?7: linearization - principle fig. 3?8: linearization - detail xnl: non linear distorted input value yl: linearized value ??? remaining error the constraint of the linearization is that the input char- acteristic has to be a monotonic function. in addition to that it is recommended that the input does not have a saddle point or inflection point, i.e. regions where the input is nearly constant. this would require a high den- sity of set points -4 -3 -2 -1 0 1 2 3 4 x 10 4 -4 -3 -2 -1 0 1 2 3 4 x 10 4 linearized distorted compensation ys n ys n+1 xnl yl input output ? xs n+1 xs n
har 24xy data sheet 16 july 14, 2015; dsh000170_001en micronas 3.3. on-board diagnostic features the har 24xy is made of two completely separated dies, each featuring two groups of diagnostic functions. the first group contains basic functions that are always active. the second group can be activated by the cus- tomer and contains supervision and self-tests related to the signal path and sensor memory. table 3?4 describes the har 24xy overall behavior in case of wiring faults. diagnostic features that are always active: ? wire break detection for supply and ground line ? undervoltage detection ? thermal supervision of output stage: overcurrent, short circuit, etc. (har 2455) diagnostic features that can be activated by cus- tomer: ? overvoltage detection ? eeprom self-test at power-on ? continuous rom parity check ? continuous state machine self-test ? adder overflow failure indication for har 24xy each die indicates a fault immediately by switching the output signal to the selected error band in case that the diagnostic mode is activated by the customer . the customer can select if the output goes to the upper or lower error band by setting bit number 7 in the cust_setup register (table 3?3 on page 14). fur- ther details can be found in section 4.13. on page 27. the sensor switches the output to tristate if an over temperature is detected by the thermal supervision. the sensor switches the output to ground in case of a vsup wire break.
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 17 table 3?4: har 24xy behavior in case of faults short circuit to 5 v supply short circuit to gnd short circuit to signal/s short circuit to battery (12 v) open circuit component power supply normal component is not supplied: wire break is active ? output is tied to ground. voltage drop across extern pull up resistor is too big to supply component. output is not predictable because device operates below recommended operating condi- tion. supply above recommended operating condi- tion. see ?absolute maximum rat- ings? for stress rating. output is in over- voltage condi- tion. component is not supplied: wire break is active ? output is tied to ground. component out signal/s external pull-up resistor is bypassed by short which is below allowed minimal pull-up resistance. see ?recom- mended operat- ing conditions? for stress rating. out = 5 v supply output stage of component is short circuit to ground. see ?recom- mended operat- ing conditions? for stress rating. out = gnd normal excess of out- put voltage over supply voltage. see ?absolute maximum rat- ings? for stress rating. component out- put is discon- nected from signal line. sig- nal line is pulled up to 5 v by external pull-up resistor. component ground component is not supplied: wire break is active ? output is tied to 5 v supply. normal component is not supplied: wire break is active ? output is tied to 5 v supply. component is reversed biased. see ?absolute maximum rat- ings? for stress rating. wire break is active ? out ? 8.5 v component is not supplied: wire break is active ? output is tied to 5 v supply.
har 24xy data sheet 18 july 14, 2015; dsh000170_001en micronas failure indication for har 2455 the har 2455 indicates a failure by changing the pwm frequency. the different errors are then coded in different duty-cycles. note: in case of an error the sensor changes the selected pwm frequency. example: during normal operation the pwm frequency is 1 khz, in case of an error 500 hz. 3.4. calibration of the sensor for calibration in the system environment, the applica- tion kit from micronas is recommended. it contains the hardware for the generation of the serial telegram for programming and the corresponding labview based programming environment for the input of the register values (see section 6.2. on page 32). for the individual calibration of each sensor in the cus- tomer application, a two point calibration is recom- mended. a detailed description of the calibration software exam- ple provided by micronas, calibration algorithm, pro- gramming sequences and register value calculation can be found in the application note ?hal 24xy pro- gramming guide?. table 3?5: failure indication for har 2455 failure mode frequency duty-cycle eeprom and state machine self-test 50% 95% adder overflow 50% 85% overvoltage 50% 75% undervoltage 50% 100%
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 19 4. specifications 4.1. outline dimensions fig. 4?1: tssop14-1 : plastic t hin s hrink s mall o utline p ackage; 14 pins; 0.9 mm thickness weight approximately 0.055 g ? copyright 2013 micronas gm b h, all rights reser v ed 4.9 5.1 13-11-12 issue date yy-mm-dd issue f mo-153 item n o. jedec sta n dard 1.1 max. mm u n it a 0.05 0.15 0. 8 5 0.95 a2 a1 8 max. 0.2 0.19 0.30 b bbb 0.1 0.09 0.20 c co d dra w i n g- n o. 06903.0001.4 zg00109 8 _ v er.02 zg- n o. l 0.5 0.7 6.4 e 0.65 4.3 4.5 e1 e 0 scale 5 10 mm d e a a2 a1 b * bbb e2 d1 17 14 8 l e pi n 1 i n dex detail x x c co seati n g pla n e e1 c y2 y1 x1 x2 bd1 center of sensiti v e area bd2 center of sensiti v e area c z1 z2 "d" and "e1" are reference data and do not incl u de mold flash or protr u sion. mold flash or protr u sion shall not exceed 150 m per side. * does not incl u de dam b ar protr u sion of 0.1 max. per side x1, x2, y1, y2, z1, z2, bd1, bd2=these dimensions are different for each sensor type and are specified in the data sheet 3.5 3.7 d1 2.9 3.1 e2
har 24xy data sheet 20 july 14, 2015; dsh000170_001en micronas fig. 4?2: tssop14 : tape and reel finishing ? copyright 2012 micronas gm b h, all rights reser v ed 1 8 .2 max iec sta n dard issue 4th 12 min a n si item n o. 602 8 6-3 issue date yy-mm-dd 15-05-11 ?102 ?13 ?330 de v ices per reel: 4000 zg- n o. zg002041_001_01 dra w i n g- n o. 06 8 3 8 .0001.4 u ser direction of feed
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 21 4.2. soldering, welding and assembly information related to solderability, welding, assembly, and second-level packaging is include d in the document ?guidelines for the assembly of micronas packages?. it is available on the micronas website (http://www.micronas.com/en/service-center/download s) or on the service portal (http://service.micronas.com ). 4.3. pin connections and short descriptions all not connected (nc) pins must be connected to gnd. in case of redundancy requirements micronas recommends the following grounding: ? gnd plane1: pin 1, 3, 5, 7 ? gnd plane2: pin 8, 10, 12, 14 ? gnd plane3: pin 4, 11 to avoid a separate gnd plane3, please connect either pin 4 or pin 11 to the nearest gnd and leave the other pin not connected. note: to minimize mechanical stress to the dies, the exposed pad should not be soldered! fig. 4?3: pin configuration fig. 4?4: top/side view of the package. 4.4. dimensions of sensitive area 250 x 250 m 2 4.5. package parameter and position of sensitive areas pin no pin name type short description die 1 2 vsup1 supply supply voltage die 1 3 gnd1 gnd ground die 1 4 gndepad gndepad ground epad 6 out1 i/o push-pull output (har 2425) or pwm output (har 2455) and programming pin die 1 die 2 9 vsup2 supply supply voltage die 2 11 gndepad gndepad ground epad 12 gnd2 gnd ground die 2 13 out2 i/o push-pull output (har 2425) or pwm output (har 2455) and programming pin die 2 tssop14-1 x1 = x2 0 mm nominal y1 = y2 0.21 mm nominal z1 0.55 mm nominal z2 0.33 mm nominal bd1 0.3 mm bd2 0.3 mm 2 12 pin 13 vsup1 out2 gnd2 3 pin 6 out1 gnd1 vsup2 9 4gndepad 11 gndepad 2 11 vsup1 gnd2 4 6 out1 gnd1 vsup2 9 out2 13 5 12 gndepad gndepad 1 3 7 10 8 14 nc nc nc nc nc nc
har 24xy data sheet 22 july 14, 2015; dsh000170_001en micronas 4.6. absolute maximum ratings stresses beyond those listed in the ?absolute maximum ra tings? may cause permanent damage to the device. this is a stress rating only. functional operation of the device at these conditions is not implied. exposure to absolute maximum rating conditions for extended periods will affect device reliability. this device contains circuitry to protect the inputs and ou tputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid application of any voltage higher than abso- lute maximum-rated voltages to this circuit. all voltages listed are referenc ed to ground (gnd1=gnd2=gndepad). 4.7. storage and shelf life information related to storage conditions of micronas sensors is included in the document ?guidelines for the assembly of micronas packages?. it gives recommendation s linked to moisture sensitivity level and long-term stor- age. it is available on the micronas website (http://www.micronas.com/en/service-center/download s) or on the service portal (http://service.micronas.com ). symbol parameter pin min. max. unit condition v sup supply voltage vsupx ? 8.5 ? 18 10 18 v v t < 96 h 4) t < 1 h 4) v out output voltage outx ? 6 1) 18 v t < 1 h 4) v out ? v sup excess of output voltage over supply voltage outx ? vsupx ? 7vt < 1 h 4) t j junction temperature under bias ? 50 190 2) c 4) v die-to-die isolation dielectric strength between both dies ?? 500 500 v 5)6) v esd esd protection for single die vsup1 out1 gnd1 ? 8+8kv 3) vsup2 out2 gnd2 1) internal protection resistor = 50 ? 2) for 96h, please contact micronas for other temperature requirements. 3) aec-q-100-002 (100 pf and 1.5 k ? ) 4) no cumulated stress 5) gnds galvanic isolation not tested 6) characterized on small sample size
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 23 4.8. recommended operating conditions functional operation of the device beyond those indicated in the ?recommended operating conditions/characteris- tics? is not implied and may result in unpredictable behavior , reduce reliability and lifetime of the device. all voltages listed are referenc ed to ground (gnd1=gnd2=gndepad). symbol parameter pin min. typ. max. unit remarks v sup supply voltage vsupx 4.5 5.7 5 6 5.5 6.5 v normal operation during programming i out continuous output current outx ? 1.2 ? 1.2 ma r l load resistor outx 5.0 ?? k ? can be pull-up or pull-down resistor c l load capacitance outx 0.33 47 600 nf for har 2425 (analog output) ? 0.18 10 nf for har 2455 (pwm) n prg number of memory pro- gramming cycles 1) ??? 100 cycles 0c < t amb < 55c t j junction temperature 2) ?? 40 ? 40 ? 40 ? 125 150 170 c 8000 h 3) 2000 h 3) 1000 h 3) 1) in the eeprom, it is not allowed to program only one single address within a 'bank' in the memory. in case of programming one single address the complete bank has to be programmed 2) depends on the temperature profile of the application. please contact micronas for life time calculations. time values are not additive 3) time values are not cumulative
har 24xy data sheet 24 july 14, 2015; dsh000170_001en micronas 4.9. characteristics at t j = ? 40 c to +170 c, v sup1 =v sup2 = 4.5 v to 5.5 v, gnd1=gnd2=gndepad = 0 v after programming and locking, at recommended operating conditions if not otherwise specified in the column ?conditions?. typical characteristics for t j = 25 c and v sup = 5 v. symbol parameter pin min. typ. max. unit conditions i sup supply current over temperature range vsupx ? 710ma resolution 5) outx ? 12 ? bit har 2425: ratiometric to v sup 1) har 2455: depends on pwm period t r(o) har 2425: step response time of output 6) outx ? 0.5 0.6 ms c l = 10 nf, time from 10% to 90% of final output voltage for a step like signal b step from 0 mt to b max har 2455: response time of output 2)6) outx ? ? ? ? 1.5 2.5 4.5 8.5 1.8 3 5.4 10.2 ms f pwm = 2 khz f pwm = 1 khz f pwm = 500 hz f pwm = 250 hz dnl differential non-linearity of d/a converter 4) outx ? 0.9 0 0.9 lsb test limit at 25 c ambient temperature inl non-linearity of output voltage over temperature 6) outx ? 0.3 ? 0.3 %v sup 2) for v out = 0.35 v ... 4.65 v; v sup = 5 v ; linear setpoint characteristics e r ratiometric error of output over temperature (error in v out / v sup ) outx ? 0.25 0.25 % max of [v out5 ? v out4.5 and v out5.5 ? v out5 ] at v out = 10% and 90% v sup v offset offset drift over temperature range 6) v out (b = 0 mt) 25c ? v out (b = 0 mt) max outx 0 0.1 0.2 %v sup v sup = 5 v ; barrel shifter = 3 (50 mt) ? v outcl accuracy of output voltage at clamping low voltage over temperature range 5) outx ? 11 ? 11 mv r l = 5 k ? , v sup = 5 v spec values are derived from resolution of the registers dac_cmphi/lo and v offset . ? v outch accuracy of output voltage at clamping high voltage over temperature range 5) outx ? 11 ? 11 mv v outh upper limit of signal band 3) outx 93 ?? %v sup v sup = 5 v, ? 1 ma ?? i out ?? 1ma v outl lower limit of signal band 3) outx ?? 7%v sup v sup = 5 v, ? 1 ma ?? i out ?? 1ma 1) output dac full scale = 5 v ratiometric, output dac offset = 0 v, output dac lsb = v sup /4096 2) if more than 50% of the selected magnetic field range is used and the temperatur e compensation is suitable. inl = v out - v outlsf with v outlsf = least square fit throug h measured output voltage 3) signal band area with full accuracy is located between v outl and v outh . the sensor accuracy is reduced below v outl and above v outh 4) external package stress or overmolding might change this parameter 5) guaranteed by design 6) characterized on small sample size, not tested
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 25 t pod power-up time (time to reach certain output accuracy) 6) outx ? ? ? ? 1.7 8.0 ms ms additional error of 1% full-scale full accuracy bw small signal bandwidth ( ? 3db) 6) outx ? 2 ? khz v outrms output noise voltage rms 6) out ?? 4 mv barrel shifter=3 overall gain in signal path =1 external circuitry according to fig. 5?1 on page 30 with low-noise supply f pwm pwm frequency (har 2455 only) 2)6) out 1.7 0.85 0.425 0.213 2 1 0.5 0.25 2.3 1.15 0.575 0.288 khz customer programmable j pwm rms pwm jitter (har 2455 only) 2)6) out ? 12lsb 12 f pwm = 1 khz r out output resistance over recommended operating range outx ? 110 ? v outlmax ?? v out ?? v outhmin tssop14-1 package r thja r thja r thjc r thjc thermal resistance junction to ambient junction to ambient junction to case junction to case ??? 146 187 47 49 k/w k/w k/w k/w measured on 2s2p board measured on 1s0p board measured on 2s2p board measured on 1s0p board 1) output dac full scale = 5 v ratiometric, output dac offset = 0 v, output dac lsb = v sup /4096 2) if more than 50% of the selected magnetic field range is used and the temperatur e compensation is suitable. inl = v out - v outlsf with v outlsf = least square fit through measured output voltage 3) signal band area with full accuracy is located between v outl and v outh . the sensor accuracy is reduced below v outl and above v outh 4) external package stress or overmolding might change this parameter 5) guaranteed by design 6) characterized on small sample size, not tested symbol parameter pin min. typ. max. unit conditions
har 24xy data sheet 26 july 14, 2015; dsh000170_001en micronas 4.10.open-circuit detection at t j = ? 40 c to +170 c, typical characteristics for t j = 25 c 4.11.overvoltage and undervoltage detection at t j = ? 40 c to +170 c, gnd1=gnd2=gndepad=0v, typical characteristics for t j = 25 c, after programming and locking symbol parameter pin min. typ. max. unit comment v out output voltage at open vsup line outx 000.15vv sup = 5 v r l = 10 k ?? to 200 k ? 000.2vv sup = 5 v r l = 5 k ?? to 10 k ? v out output voltage at open gnd line outx 4.85 4.9 5.0 v v sup = 5 v r l = 10 k ?? to 200 k ? 4.8 4.9 5.0 v v sup = 5 v r l = 5 k ?? to 10 k ? r l : can be pull-up or pull-down resistor symbol parameter pin min. typ. max. unit test conditions v sup,uv undervoltage detection level vsupx 3.33.94.3v v sup,uvhyst undervoltage detection level hysteresis 1) vsupx ? 200 ? mv v sup,ov overvoltage detection level vsupx 5.66.26.9v v sup,ovhyst overvoltage detection level hysteresis 1) vsupx ? 225 ? mv 1) characterized on small sample size, not tested
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 27 4.12.output short detection parameter at t j = ? 40 c to +170 c, typical characteristics for t j = 25 c, after programming and locking 4.13. output voltage in case of error detection at t j = ? 40 c to +170 c, typical characteristics for t j = 25 c, after programming and locking fig. 4?5: behavior of har 2425 for different v sup symbol parameter pin min. typ. max. unit test conditions t ocd over current detection time 1) outx ? 128 ? s t timeout time period without over current detection 1) outx ? 256 ? ms i ovc detectable output short current 1) outx ? 10 ? ma 1) characterized on small sample size, not tested symbol parameter pin min. typ. max. unit test conditions v sup,diag supply voltage required to get defined output voltage level 1) vsupx ? 2.1 ? v v error,low output voltage range of lower error band 1) outx 0 ? 4%v sup v sup > v sup,diag 5 k ? >= r l <= 200 k ? v error,high output voltage range of upper error band 1) outx 96 ? 100 %v sup v sup > v sup,diag 5 k ? >= r l <= 200 k ? 1) characterized on small sample size, not tested v sup,diag v sup,uv 5 v sup,ov v sup [v] v out [v] : output voltage will be between vsup and gnd : cust_setup register bit no. 7 set to 1 ? v out ? 4% v sup : cust_setup register bit no. 7 set to 0 ? v out ? 96% v sup
har 24xy data sheet 28 july 14, 2015; dsh000170_001en micronas 4.14. magnetic characteristics at t j = ? 40 c to +170 c, v sup1 =v sup2 = 4.5 v to 5.5 v, gnd1=gnd2=gndepad = 0 v after programming and locking, at recommended operation conditions if not otherwise specified in the column ?conditions?. typical characteristics for t j = 25 c and v supx = 5 v. symbol parameter pin min. typ. max. unit test conditions sens magnetic sensitivity 1) ??? 170 mv/ mt programmable v sup = 5 v and t j = 25 c; barrel shifter= 12 mt ? vout = 4 v range abs absolute range of cfx register (magnetic range) 1) ? 100 200 235 % see section 3.2. on page 9 for cfx register definition. b offset magnetic offset 1) outx ? 0.4 0 0.4 mt b = 0 mt, i out = 0 ma, t j = 25 c, unadjusted sensor ? b offset / ? t magnetic offset change due to t j 1) outx ? 50 5 ? t/k b = 0 mt, i out = 0 ma barrel shifter = 3 ( 50 mt) es error in magnetic sensitivity 2) outx ? 1% 2.5 % v sup = 5 v barrel shifter = 3 ( 50 mt) 1) characterized on small sample size, not tested. 2) es over the complete temperature range is tested on sample basis.
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 29 4.14.1. definition of sensitivity error es es is the maximum of the absolute value of the quo- tient of the normalized measured value 1) over the nor- malized ideal linear 2) value minus 1: in the below example, the maximum error occurs at ? 10 c: fig. 4?6: es definition example 1) normalized to achieve a least-squares method straight line that has a value of 1 at 25 c 2) normalized to achieve a value of 1 at 25 c es max abs meas ideal ----------- - 1 ? ?? ?? ?? ?? tmin, tmax ?? = es 1.001 0.993 ------------- 1 ? 0.8% == 50 75 100 125 150 175 25 0 ?25 ?50 0.98 0.99 1.00 1.01 1.02 1.03 -10 0.992 1.001 temperature [c] relative sensitivity related to 25 c value ideal 200 ppm/k least-squares method straight line measurement example of real sensor, normalized to achieve a value of 1 of its least-squares of normalized measured data method straight line at 25 c
har 24xy data sheet 30 july 14, 2015; dsh000170_001en micronas 5. application notes 5.1. application circuit for emc protection, it is recommended to connect one ceramic capacitor, e.g. 47 nf, between ground and the supply voltage, respectively the output voltage pin. fig. 5?1: recommended application circuit (analog output) fig. 5?2: recommended application circuit (pwm output) if the two dies are operated in parallel to the same sup- ply and ground line, they can be programmed individu- ally as the communication with the sensors is done via their output pins. 5.2. measurement of a pwm output signal of har 2455 in case of the pwm output, the magnetic field informa- tion is coded in the duty cycle of the pwm signal. the duty cycle is defined as the ratio between the high time ?s? and the period ?d? of the pwm signal (see fig. 5?3). note: the pwm signal is updated with the rising edge. hence, for signal evaluation, the trigger-level must be the rising edge of the pwm signal. fig. 5?3: definition of pwm signal 5.3. ambient temperature due to the internal power dissipation, the temperature on the silicon chip (junction temperature t j ) is higher than the temperature outside the package (ambient temperature t a ). the maximum ambient temperature is a function of power dissipation, maximum allowable die tempera- ture, and junction-to-ambient thermal resistance (r thja ). with a maximum of 5.5v operating supply volt- age the power dissipation p is 0.097 w per die, for a total of 0.194 w. the junction to ambient thermal resis- tance r thja is specified in section 4.9. on page 24 the difference between junction and ambient air tem- perature is expressed by the following equation: 5.4. pad size layout fig. 5?4: recommended pad size dimensions in mm out1 gnd1 / gndepad 47 nf vsup1 47 nf har 2425 out2 gnd2 47 nf vsup2 47 nf out1 gnd1 / gndepad 180 pf vsup1 47 nf har 2455 out2 gnd2 180 pf vsup2 47 nf update out time v high v low d s t j t a t ? + = t ? pr thja ? 16.5c == 0.4 mm 4.5 mm 1.35 mm 7.2 mm 0.65 mm 4.3 mm
data sheet har 24xy micronas july 14, 2015; dsh000170_001en 31 6. programming of the sensor har 24xy features two different customer modes. in application mode the sensor provides an output sig- nal. in programming mode it is possible to change the register settings of the sensor. after power-up the sensor is always operating in the application mode. it is switched to the programming mode by a pulse on the sensor output pin. 6.1. programming interface in programming mode the sensor is addressed by modulating a serial telegram on the sensors output pin. the sensor answers with a modulation of the out- put voltage. a logical ?0? is coded as no level change within the bit time. a logical ?1? is coded as a level change of typi- cally 50% of the bit time. after each bit, a level change occurs (see fig. 6?1). the serial telegram is us ed to transmit the eeprom content, error codes and digital values of the angle information from and to the sensor. fig. 6?1: definition of logical 0 and 1 bit a description of the communication protocol and the programming of the sensor is available in a separate document (application: har 2425 programming guide). logical 0 or t bittime t bittime logical 1 or t bittime t bittime 50% 50% 50% 50% table 6?1: telegram parameters (all voltages are referenced to gnd1=gnd2=gndepad = 0 v) symbol parameter pin limit values unit test conditions min. typ. max. v outl voltage for output low level during programming through sensor output pin outx 0 0 ? 0.2*v sup 1 v vfor v sup = 5 v v outh voltage for output high level during programming through sensor output pin outx 0.8*v sup 4 ? ? v sup 5.0 v vfor v sup = 5 v v supprogram v sup voltage for eeprom programming (after prog and erase) vsupx 5.7 6.0 6.5 v supply voltage for bidirectional com- munication via out- put pin. t bittime biphase bit time outx 900 1000 1100 s slew rate outx ? 2 ? v/ s
har 24xy data sheet 32 july 14, 2015; dsh000170_001en micronas 6.2. programming environment and tools for the programming of har 24xy it is possible to use the micronas tool kit (hal -apb v1.x & labview pro- gramming environment) or the usb kit in order to ease the product development. the details of programming sequences are also available on request. 6.3. programming information for reliability in service, it is mandatory to set the lock bit to one and the pout bit to zero after final adjustment and programming of har 2425. the success of the lock process must be checked by reading the status of the lock bit after locking and by a negative communication test after a power on reset. it is also mandatory to check the acknowledge (first and second) of the sensor or to read/check the status of the prog_diagnosis register after each write and store sequence to verify if the programming of the sensor was successful. please check har 24xy pro- gramming guide for further details. electrostatic discharges (esd) may disturb the pro- gramming pulses. please take precautions against esd. note: please check also the ?hal 24xy programming guide?. it contains additional information and instructions about the programming of the devices.
har 24xy data sheet 33 july 14, 2015; dsh000170_001en micronas micronas gmbh hans-bunte-strasse 19 ? d-79108 freiburg ? p.o. box 840 ? d-79008 freiburg, germany tel. +49-761-517-0 ? fax +49-761-517-2174 ? e-mail: docservi ce@micronas.com ? internet: www.micronas.com 7. data sheet history 1. advance information: ?har 24xy high-precision dual-die programmable linear hall-effect sensor family?, may 23, 2015, ai000179_001en. first release of the advance information. 2. data sheet: ?har 24xy high-precision dual-die programmable linear hall-effect sensor family?, july 14, 2015, dsh000170_001en. first release of the data sheet. major changes: ? absolute maximum ratings on page 22: value v die-to-die isolation ? recommended operating conditions on page 23: junction temperature conditions specified ? application circuit on page 30 ? recommended pad size dimensions in mm on page 30 ? tssop14 tape and reel finishing added

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