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[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 1 1. general description the AK7452 is a monolithic hall - effect sensor ic that specializes in detecting rotation angle. a contactless rotary position sensor is easily designed with a magnet. the AK7452 is only sensitive to the magnetic flux density applied parallel to the ic surface. this is obtained through a m agnetic c oncentrator which is mounted on the hall - effect elements. it is advantageous to accurate angular mea surements against mechanical displacement. the AK7452 is the zero latency rotation angle sensor to follow rotation speed up to 25 ,000rpm by tracking servo architecture . it is suitable for motor controlled applications with an encoder. 2. applications motor controlled applications (robot , machine tools, stepping motor, dc brushless motor etc .) optical encoder replacement 3. features 360 contactless angl e sensor simple magnetic design extended industrial operating temperature range : - 40 c to +125 c expanded operating voltage range : 3.0 to 5.5v angle resolution : 14 bit ma ximum tracking rotation speed : 2 5 ,000 rpm an gle linearity error : 0.5 ( @ 25 c ) output propagation delay : 1.8 s (@ abz hysteresis off setting) self - diagnostic functions : ? under magnetic flux density detect function ? tracking lost detect function interface s : ? 4 - wi re spi : absolute angle data & user programming ? abz incremental output ? uvw commutation output user programming functions ? zero degree p oint setting ? magnet rotation d irectio n : ccw / cw ? abz i ncremental output r esolution : up to 4096ppr ? z - phase pulse width : 1lsb / 4lsb / 180deg. point switch mode ? uvw c ommutation o utput resolution : up to 64poles (32 pole pairs) ? angle error correction environmental f riendly (rohs compliant) ? lead f ree ? halogen f ree ak 7452 zero latency angle sensor ic
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 2 4. table of contents 1. general description ................................ ................................ ................................ ......................... 1 2. applications ................................ ................................ ................................ ................................ ..... 1 3. features ................................ ................................ ................................ ................................ ........... 1 4. table of contents ................................ ................................ ................................ ............................ 2 5. block diagram and functional description ................................ ................................ ..................... 3 6. pin configuration and functional description ................................ ................................ ................. 4 7. absolute maximum ratings ................................ ................................ ................................ ............. 5 8. operating conditions ................................ ................................ ................................ ....................... 5 9. eeprom characteristics ................................ ................................ ................................ ................ 5 10. electrical and magnetic characteristics ................................ ................................ .......................... 6 11. output electrical characteristics ................................ ................................ ................................ ..... 7 11.1. dc characteristics ................................ ................................ ................................ ................... 7 11.2. ac characteristics ................................ ................................ ................................ ................... 7 12. serial i/f digital characteristics ................................ ................................ ................................ ...... 7 12.1. dc characteristics ................................ ................................ ................................ ................... 7 12.2. ac characteristics ................................ ................................ ................................ ................... 8 13. abz incremental output description ................................ ................................ ............................... 9 14. uvw commutation output description ................................ ................................ ........................ 10 15. programmable mode description ................................ ................................ ................................ .. 11 16. serial i/f protocol ................................ ................................ ................................ .......................... 14 17. self - diagnostic function ................................ ................................ ................................ ................ 17 18. register address map / description ................................ ................................ .............................. 18 19. eeprom address map / descript ion ................................ ................................ ........................... 27 20. magnet angle position, output and rotation direction ................................ ................................ .... 36 2 1. package information ................................ ................................ ................................ ..................... 37 21.1. tssop16 C package dimensions ................................ ................................ ......................... 37 21.2. marking information ................................ ................................ ................................ ............... 37 21.3. sensitive spot positioning ................................ ................................ ................................ ..... 38 22. revision history ................................ ................................ ................................ ............................. 39 important notice ................................ ................................ ................................ ................................ ....... 40
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 3 5. block diagram and functional description figure 1 : func t i onal b l ock d ia gram table 1 : functional block description block name function he _x / he_y detect the x/y - compositions of the magnetic flux density applied parallel to the ic package surface by a magnetic concentrator and convert to electric signal . chopper sw switch the current direction in order to cancel the hall elements offset. preamp amplify the signals from the hall elements. swap sw switch the signal path in order to reduce the error caused by the hall elements sensitivity mismatch. a/d analog - to - digital converter. type2 tracking loop angle data converter that follows the digital l y converted input signal. serial i/f interface based on 4 - wire spi protocol. encoder logic generate the abz incremental signal and the uvw commutation signal from the angle data. diag self - diagnosis circuit. por generate a reset signal at the time of low supply voltage. buffer buffer the output si g n al s . regulator regulates internal bias voltage. he - driver drive the constant current for the hall elements. osc generate the master clock. viref generate the reference voltage and current. eeprom non - volatile memory. regulator vdd vss he _x pre a mp a/d type2 tracking loop chopper sw eeprom a teste v y v x he_y prea mp a/d swap sw buffer b z u v w error scl k mosi miso csn encoder logic serial i/f diag he - driver osc viref por
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 4 6. pin configuration and functional description table 2 : pin configuration and functional description no. symbol i/o type function 1 u o digital u - phase commutation output pin 2 v o digital v - phase commutation output pin 3 w o digital w - phase commutation output pin 4 nc - - no connection p in ( note 1 ) 5 miso o digital serial i/f data output pin 6 mosi i digital serial i/f data input pin 7 sclk i digital serial i/f clock input pin 8 csn i digital serial i/f chip select pin 9 vdd - power power supply pin 10 nc - - no connection p in ( note 1 ) 11 teste i - test dedicated pin ( note 2 ) 12 vss - power ground pin 13 error o digital error output pin 14 z o digital z - phase incremental output pin 15 b o digital b - phase incremental output pin 16 a o digital a - phase incremental output pin note 1 : nc pin s must be open . note 2 : te ste pin must be connected to vss . figure2 : pin configuration
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 5 7. absolute maximum ratings parameter symbol min. max. unit notes supply voltage v dd a - 0.3 + 6.5 v vdd p in terminal voltage v term - 0.3 v dd v u, v, w, miso, mosi, sclk, csn, teste, error, z, b, a, nc pin output current i o a - 1 0 + 10 ma u, v, w, miso, error, z, b, a pin storage temperature t stg - 50 +150 oc warning: operation beyond these limits may cause permanent damage to the device. even if it does not lead to destruction, reliability and life may be adversely affected. normal operation is not guaranteed at these extremes. each voltage is with respect to vss pin. 8. operating conditions parameter symbol min. typ. max. unit notes supply voltage v dd 3.0 5.0 5.5 v vdd pin operating ambient temperature t a - 40 25 +125 oc warning: electrical and magnetic characteristics are not guaranteed when operated beyond these conditions. each voltage is with respect to vss pin. 9. eeprom characteristics (v dd =3 .0 to 5.5v) parameter symbol min. typ. max. unit notes eeprom endurance e en 1000 c ycle this parameter is guaranteed by design. ambient temperature in w riting t aw 0 + 85 oc writing time w t 5 ms
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 6 10. electrical and magnetic characteristics ( t a = - 40 to + 125 oc , v dd =3.0 to 5.5v unless otherwise specified ) parameter symbol conditions min. typ. max. unit magnetic flux density range b range 30 50 70 mt angle detection range a range 0 360 d eg. angle resolution a res 0.022 d eg. angle tracking rate t r a 2 5 000 rpm an gle linearity error a inl t a =2 5 oc - 0. 5 + 0. 5 d eg. angle hysteresis a hys t a =2 5 oc 0. 3 d eg. thermal angle drift ( note 3 ) a drift t a =2 5 oc basis - 0.5 +0.5 d eg. angle output noise a noise 3.3 d abz hysteresis off dd no output load 20 ma startup time ( note 5 ) t start 40 ms note 3 : this parameter is de rived from ic design and not tested at mass production . note 4: this parameter changes as follows when the abz output hysteresis setting is not off. output delay (max) : t d = 1.8 s + (1 + abz hysteresis ) ? 0.1 8 s note 5 : startup time is defined as the time from when vdd reaches operating voltage level to when the error pin is set to h level.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 7 11. output electrical characteristics 11.1. dc characteristics ( t a = - 40 to +125 oc , v dd =3 . 0 to 5.5v unless otherwise specified) parameter symbol conditions min. typ. max. unit output current i out u, v, w, error , z, b, a pin - 2 + 2 ma output low level v ol u, v, w, error , a, b, a pin i out =2ma (sink) 0.2 v dd v output high level v oh u, v, w, error , z, b, a pin i out =2ma (source) 0.8 v dd v output load capacitance c o ut u, v, w, error, z, b, a pin 50 pf 11.2. ac characteristics ( t a = - 40 to +125 oc , v dd =3.0 to 5.5v unless otherwise specified) parameter symbol conditions min. typ. max. unit output rise time t ro u, v, w, error , z, b, a pin i out =2ma( source ) 3 0 ns output fall time t fo u, v, w, error , z, b, a pin i out =2ma ( sink ) 3 0 ns 12. serial i/f digital characteris t i cs 12.1. dc characteristics ( t a = - 40 to +125 oc , v dd =3.0 to 5.5v unless otherwise specified) parameter symbol conditions min. typ. max. unit input current i si mosi, sclk , csn pin - 10 + 10 l si mosi, sclk, csn pin 0.3 v dd v input high level v h si mosi, sclk, csn pin 0.7 v dd v output current i so miso pin - 700 +700 lso miso pin i so = 700 dd v output high level v h so miso pin i so =700 a dd v output load capacitance c so miso pin 50 pf
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 8 12.2. a c characteristics ( t a = - 40 to +125 oc , v dd =3.0 to 5.5v unless otherwise specified) parameter symbol conditions min. typ. max. unit sclk frequency f sclk 0.001 8 000 khz f sclk r e @ read eeprom opcode ( note 6 ) 0.001 100 khz sclk high time t h 5 0 n s t hr e @ read eeprom opcode 4 s sclk low time t l 5 0 ns t lr e @ read eeprom opcode 4 s sclk rise time t r not tested at mass production 10 ns sclk fall time t f not tested at mass production 10 ns data output rise time t rdo 20 ns data output fall time t fdo 20 ns cs setup time t css 100 ns cs hold time t csh 100 ns data setup time t ds 20 ns data hold time t dh 20 ns data valid time t dv 5 0 ns data release time t dr 100 ns wait time t cw @readangle opcode 200 ns t ew @writeeeprom opcode 5 ms t rw @writereg opcode 2.5 s t mt @changemode opcode (user mode to normal mode) (user mode2 to normal mode) 40 ms @changemode opcode (normal mode to user mode) (user mode to user mode2) (user mode2 to user mode) 1 ms note 6 : the readeeprom operation needs to operate at f sclk r e or lower clock frequency. operation b eyond this limit may cause malfunction of reading out. figure3: serial i/f ac characteristics cs n sclk mosi 1 op3 t css t ds t dh 24 t l /t l r e t h /t h r e t csh t cw / t ew / t rw /t mt sclk 0 .3 v dd 0 .7 v dd t r t f op2 2 23 miso d0 d1 t dr t dv miso k 0 .2 v dd 0 .8 v dd t r do t f do
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 9 13. abz incremental output description the AK7452 provides the abz incremental output via a, b, z pin. these outputs are en coded from the angle output data. t he output resolution is programmable between 1 and 4096ppr. when the magnet is rotating in c ounter - clockwise at default settings, the b - phase leads the a - phase. the z - phase width is selectable among z - width 1lsb mode , z - width 4lsbmode and 180deg . point switch mode. figure 4: abz incremental output characteristics z b a ccw 1 lsb z - width 1lsb mode 360 deg. z b a ccw 4lsb z - width 4 lsb mode 360 deg. z b a ccw 18 0 deg. 360 deg. 180 deg. point switch mode
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 10 14. uvw commutation output description the AK7452 provides the uvw commutation output necessary for detecting the magnetic pole of the dc brushless motor via u, v, w pin. the phase of each output is shifted by electric angle phase 120 o . the output resolution is programmable from 2 to 64 poles ( 1 to 32 pole pairs). figure 5: uvw co mmutation output u v w 0 60 2 poles (1 pole pair) u v w 0 60 4 poles (2 pole pair) 120 180 240 300 360 120 180 240 300 360
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 11 15. programmable mode description the AK7452 has the three modes (normal mode, user mode and user mode2 ). in normal mode, abz incremental output and uvw output are obtained, and angle data can be read by serial interface. in user mode and user mode2 , it is able to read and write the internal registers and eeprom according to a serial i/f. use r mode supports the user programming such as zero point adjustment, magnet rotation direction , abz incremental output resolution, z - phase output setting, uvw commutation output resolution, output hysteresis , output on/off setting, self - diagnostic on/off se tting and eeprom memory lock setting. additionally user mode2 supports the angle error correction setting s . when the power supply is turned on , the AK7452 automatically resets the internal register and loads the eeprom configuration data to set the intern al configuration register. a fter startup sequence, the AK7452 operates in normal mode. ? mode description each mode can be changed by writing a specific opcode and data on a specific address as the diagram below. figure 6: mode transition diagram normal mode user mode changemode opcode: 0101 addr. 0x0 3 data: 0x50f changemode opcode : 0101 addr. 0x0 3 data: 0x000 user mode2 changemode opcode: 0101 addr. 0x0 3 data: 0x a f 0 changemode opcode : 0101 addr. 0x0 3 data: 0x50f changemode opcode: 0101 addr. 0x0 3 data: 0x 000
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 12 table 3: mode description mode name note normal mode in normal mode, it is not able to access the internal register and eeprom except register r_ang _h (addr.0x00) , r_ang_l (addr.0x01) and register r_chmd (addr. 0x03 ). available operation codes are readangle and changemode. the abz i ncre mental outputs and uvw commutation output s are toggle d corresponding to the magnet rotation. when various self - diagnosis functions ar e detected, AK7452 automatically notifies the diagnostic state by the error pin and the error bit attached to the angle data output from the serial interface. in case of changing mode to normal mode, all registers are automatically initialized and loads t he eeprom configuration data to set the internal configuration register. therefore the wait time interval for the normal operating condition needs to be equal to wait time t mt or longer. user mode in user mode, it is able to access the internal configuration register and eeprom. to set the following parameters in normal mode, configuration data need to be stored in eeprom. 1. zero degree point setting this setting defines the origin of the output angle data. it is programmable at any angle position in 14 - bit resolution. 2. magnet rotation direction setting this setting defines the increase or decrease of the output angle data relative to the magnet rotation direction. when it is selected to when it is selected to cw, the output angle 3. z - phase pulse width setting this setting defines the z - phase pulse width in the abz incremental output. z phase pulse width can be selected from 1lsb or 4lsb of abz incremental output resolution setting and switch mode.switch mode outputs h 4. abz incremental output on/off setting this setting defines these outputs setting to enable or disable . when it is selected to off, the a, b and z pin go to high 5. abz incremental output hysteresis setting this setting defines the abz hysteresis parameter . the abz output is not updated when the processing data step is smaller than the programmed parameter. 6. abz incremental output resolution setting this setting defines the abz output resolution. it is programmable to an arbitrary value from 1 to 4096ppr. 7. memory lock setting in order to prevent rewriting eeprom incorrectly, it is able to lock the memory. once the configuration of memory lock is enabled, it is not possible to change eeprom anymore.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 13 8. self - diagnostic on/off setting this setting defines the activation or inactivation of each self - diagnostic functions. 9. uvw commutation output on/off setting this setting defines these outputs setting to enable or disable. when it is selected to off, the 10. uvw commutation output hysteresis setting this setting defines the uvw output hysteresis parameter. the uvw output is not updated when the processing data step is smaller than the programmed parameter. 11. uvw commutation output resolution setting this setting defines the uvw output resolution. it is programmable to an arbitrary value from 2 to 64poles ( 1 ~ 32 pole pairs). in user mode, the error pin goes to l level operating condition needs to be equal to wait time t mt or longer. warning: electrical and magnetic characteristics are not guaranteed in user mode . user mode2 in user mode2, it is also able to access the internal configuration eeprom. in addition to the access area of user mode , user mode2 supports the angle error correction settings as below. to set the following parameters in normal mode, configuration data need to be stored in eeprom. 1. offset adjustment setting this setting defines the correction setting for the x - axis a nd y - axis offset error. 2. orthogonality adjustment setting this setting defines the correction setting for the orthogonality error between x - axis and y - axis. 3. gain mismatch adjustment setting this setting de fines the correction setting for the gain mismatch between x - axis and y - axis. to change these settings, please refer AK7452 application note for user mode2. warning: these setting parameters are trimmed at our factory for ideal shaft - end mounting . in case of changing these parameters, the electrical and magnetic ch aracteristics are not guaranteed in normal mode. warning: electrical and magnetic characteristics are not guaranteed in user mode2 .
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 14 16. serial i/f protocol the AK7452 provides the 4 - wire spi for user programming. data communication is available only when the cs n pin set to l . to write the internal register or eeprom, serial data must be input via the mosi pin on the falling edge of sclk. to read the internal register or eeprom, the AK7452 outputs serial data via the miso pin on the rising edge of sclk. ? opcode table 4 : operation code description opcode [3 n/a invalid invalid invalid 0001 writeeeprom store data to eeprom invalid valid valid 0010 readeeprom read data from eeprom invalid valid valid 0011 writereg store data to the internal register invalid valid valid 0100 readreg read the internal register data invalid valid valid 0101 changemode change operating mode valid valid valid 0110 n/a n/a invalid invalid invalid 0111 n/a n/a invalid invalid invalid 1000 datarenew al update the processing data invalid valid valid 1001 readangle read the angle data valid valid valid 1010 akm reserved akm reserved invalid invalid akm use only 1011 n/a n/a invalid invalid invalid 1100 n/a n/a invalid invalid invalid 1101 n/a n/a invalid invalid invalid 1110 n/a n/a invalid invalid invalid 1111 n/a n/a invalid invalid invalid
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 15 ? data sequence 1) write data opcode(o[3:0])=0001(write data to eeprom) opcode(o[3:0])=0011(write data to register) a[6:0]:register or eeprom address d[11:0]:writing data 2) read data opcode(o[3:0])=0010(read data from eeprom) opcode(o[3:0])=0100(read data from register) a[6:0]:register or eeprom address d[11:0]:reading data 3) change mode opcode(o[3:0])=0101 a[6:0]:0x03 d[11:0]: 0x000(normal mode) , 0x50f(user mode) , 0xaf0(user mode2)
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 16 4) data renew al opcode(o[3:0])=1000 5) read angle opcode(o[3:0])=1001 m: mode bit ( 0 indicates normal mode , 1 indicates user mode or user mode2 ) p1: parity bit for r_ang[13:7] and error bit (normal: odd parity, error: even parity) p2: parity bit for r_ang[6:0] and error bit (normal: odd parity, error: even parity) e: error bit ( norm al=1, error=0) d[13:0]:14bit angle data (r_ang_u[1:0], r_ang_l[11:0])
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 17 17. self - d iagnostic function the AK7452 has several self - diagnostic functions to detect a condition when magnetic flux density applied to the AK7452 is poor and a condition of loss of tracking . in user mode, each diagnostic function can be disabled but it is strongly recommended to enable all diagnostic functions for establishing a robust system. ? under magnetic flux density detection the AK7452 indicates an error when the magnetic flux density is undersupplied ( typ. under 17 .2 mt). this error sets the error pin to l level and error bit to 0. ? loss of tracking detection the AK7452 indicates an error when there is a loss of tracking (typ. over 2) . this error sets the error pin to l level and error bit to 0. in case of no error by diagnosis, the AK7452 return s the error pin to h level and error bit to 1 automatically.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 18 18. register address map / description ? register address map address register name permission content normal mode user mode user mode2 0 x00 r_ang_u[1:0] r r r 14 - bit angle data (upper 2 - bit) 0x01 r_ang_l[11:0] r r r 14 - bit angle data (lower 12 - bit) 0 x02 r_mag[9:0] n/a r n/a magnetic flux density data 0 x03 r_chmd[11:0] w r/w r/w mode indicator data 0 x04 r_errmon[1:0] n/a r r diagnosis error monitor 0 x05 r_zp_u[1:0] n/a r/w r/w 14 - bit zero degree point setting (upper 2 - bit) 0 x06 r_zp_l[11:0] n/a r/w r/w 14 - bit zero degree point setting (lower 12 - bit) 0 x07 r_rdabz[7:0] n/a r/w r/w rotation direction setting z - phase pulse width setting abz output on/off setting abz output hysteresis setting 0x08 r_abzres[11:0] n/a r/w r/w abz output resolution setting 0x09 r_mlk[1:0] n/a r r memory lock indicator 0x0a r_sddis[ 1 :0] n/a r/w r/w self - diagnostic on/off setting 0x0b r_uvw[9:0] n/a r/w r/w uvw output on/off setting uvw output hysteresis setting uvw output resolution setting (n/a: not available, r: read only, w: write only, r/w: full access) ? register description 1) r_ang _u, r_ang_l (addr. 0x00, 0x01) (addr.0x00) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - r_ang_ u [1:0] (addr.0x01) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 r_ang _l [11:0] these registers contain the output 14 - bit angle data improved by the hysteresis filter . the hysteresis filter is applied to the processed raw angle data according to the abz hysteresis setting. in normal mode, the output angle data can be read via readangle operation code.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 19 the relationship between da ta value and angular position are as follows. ang u lar position[] r_ang_u[ 1 :0] r_ang_l[11:0] 0 0x0 0x000 0.022 0x0 0x001 0.044 0x0 0x002 0.066 0x0 0x003 ? ? ? 89.978 0x0 0xfff 90.000 0x1 0x000 ? ? ? 2) r_mag (addr.0x02) (addr.0x02) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - r_mag[9:0] these registers contain the 10 - bit magnetic flux density data. the data resolution is 0.14mt /lsb (typ) . in user mode, the magnetic flux density can be detected by reading these registers. when fabricating a rotary position sensor module designed with a magnet, it is able to check the magnetic flux density whether targeted magnetic field strength is applied or not. the relationship between data value and angular position are as follows. magnetic flux density [mt] r_mag[9:0] 0 0x000 0.14 0x001 0.28 0x002 0.42 0x003 ? ? 143.22 0x3ff warning: this magnetic flux density measurement datas accuracy which is stored in t his register is not guaranteed. it is recommended to use for only reference. 3) r_chmd (addr.0x03) (addr.0x03) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 r_chmd[11:0] these registers contain the 12 - bit mode indication data. in normal mode, mode change can be done by using changemode opcode and storing instruction data in r_chmd register. mode r_chmd[11:0] default normal mode 0x000 user mode 0x50f user mode2 0xaf0 note 7: it is not possible to make a direct transitio n from normal mode to user mode 2. transition to user mode2 must be executed in user mode.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 20 4) r_errmon (addr.0x04) (addr.0x04) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - r_err mon[1:0] these registers contain the diagnostic indication data. in case of diagnosis, each indication data bit is set to 0 . the relationship between each item and bits are as follows. r_errmon [1:0] diagnosis value w hen d etected normal value r_errmon[1] under magnetic flux density detection 0 1 r_errmon[0] loss of tracking detection 0 1 5) r_zp_u, r_zp_l (addr. 0x05, 0x06) (addr.0x05) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - r_zp_u[1:0] (addr.0x06) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 r_zp_l[11:0] these registers contain the configuration data of zero degree point. this data is used as a reference of the output angle data. zero degree point [ o ] r_zp_u[1:0] r_zp_l[11:0] default 0 0x0 0x000 ? ? ? 89.978 0x0 0xfff 90.000 0x1 0x000 ? ? ? 359.956 0x3 0xffe 359.978 0x3 0xfff note 8: the value set in this register is also reflected in abz and uvw output.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 21 6) r_ rdabz (addr. 0x07) (addr.0x 07 ) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - r _rd r _z_width [1:0] r _abz_e r _abz_hys[3:0] these registers contain the configuration data of r otation d irection , z - phase pulse width , abz incremental o utput on/off and abz incremental o utput h ysteresis . 6 - 1. r_rd register r_ rd register contains the configuration data of magnet rotation direction. it defines the increase or decrease of the output angle data relative to the magnet rotation direction. in case of selecting ccw (counter - clockwise), the output angle data increases in response to counter - clockwise magnet rotation. c ounter - clockwise is defined by the 1 - 8 - 9 - 16 pin order direction for tssop - 16 package top view position. in case of selecting cw (clockwise), the output angle data increases in response to clockwise magnet rotation. clockwise is defined by the 16 - 9 - 8 - 1 pin order direction for tssop - 16 package top view position. rotation direction r_ rd default ccw 0x0 6 - 2. r_z_width register r_z_width register stores z phase pulse width setting data. in any setting, the z phase output generates pulse at the 0 o position. in z - width 1 lsb mode setting, the z - phase pulse width is quarter of one cycle of a phase. in z - width 1 lsb mode setting, the z - phase pulse width is equal to one cycle of a phase. in 180 deg. point switch mode setting, the z phase outputs h level from the 0 o position to the 180 o position and l level from the 180 o position to the 360 o position. z - phase output r_ z _width default z - width 1lsb mode 0x0 180 deg . point switch mode 0x1 z - width 4lsb mode 0x2 6 - 3. r_abz_e register r_ abz_e register contains the configuration data of abz incremental output on/off. in case of off setting , the a, b, z pin goes to high - impedance (hi - z) output. abz output r_ abz_e default off 0x0 on 0x1 6 - 4. r_abz_hys register r_ abz _hys registers contain the configuration data of hysteresis filter parameter . this parameter defines whether the output angle data is updated or not in response to the processing raw angle data change. the output angle data is not updated when the processing raw angle data change is smaller than the hysteresis width . this parameter is defined in units of 1 lsb of 14bit angle data.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 22 when the hysteresis width is increased, the data oscillation influence caused by noisy environment and/or module vibration is decreased . however the maximum output dela y is increased as described below equa tion. maximum output delay t d = 1.8s + (1+ abz hysteresis ) ? 0.18s note 9: abz hyster e sis in the above expression is the number of lsb set by r_abz_hys [3:0]. (example: abz hyster e sis" = 3 when r_abz_hys [3:0] = 0x4.) in case of off setting , the output angle data equals the processing raw angle data. the inherent lsb data flickering ( note 1 0 ) is not eliminated from the output angle data. the maximum output delay is the shortest ( 1.8 s ) at this setting. in case of 0lsb setting , the inherent lsb data flickering is eliminated from the output angle data. the ma ximum output delay is 1.9 8 s at this setting. note 1 0: the lsb data flickering inheres in the type2 tracking loop architecture. this data flickering appears even in the ideal environment u nder noise free case. therefore akm do not recommend off setting. figure7: abz hysteresis setting diagram 0 x001 0 0.022 0 .044 0 .066 0 x000 0 x002 0 x003 angle position output data 0 x001 0 0.022 0 .044 0 .066 0 x000 0 x002 0 x003 angle position output data c w c c w data flickering c w c c w off setting 0lsb setting 0 x001 0 0 .022 0 .044 0 .066 0 x000 0 x002 0 x003 angle position output data 0 x001 0 0.022 0 .044 0 .066 0 x000 0 x002 0 x003 angle position output data c w c c w c w c c w 1lsb setting 2 lsb setting
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 23 the relationship between r_abz_hys[3 : 0] and the hysteresis set value are as follows . abz hysteresis r_abz_hys[3:0] default off 0x0 0lsb 0x1 1lsb 0x2 7) r_abzres (addr. 0x08) (addr.0x08) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 r_abzres[11:0] these registers contain the configuration data of abz incremental output resolution. it can be set to an arbitrary value from 1 to 4096 ppr. abz resolution r_abz_res[11:0] default 1ppr 0x000 2ppr 0x001 ? ? 1000ppr 0x3e7 ? ? 2500ppr 0x9c3 ? ? 4095ppr 0xffe 4096ppr 0xfff
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 24 8) r_mlk (addr. 0x09) (addr.0x09) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - r_mlk[1:0] these registers contain the 2 - bit memory indication data. to check the memory condition, r_mlk can be read via readreg operation code in user mode. memory condition r_mlk[1:0] default locked 0x0 locked 0x1 locked 0x2 unlocked 0x3 9) r_sddis (addr.0x0a) (addr.0x0a) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - r_sddis[1:0] these registers contain the configuration data for the self - diagnostic functions. to disable a specific diagnostic function, the corresponding bit should be set to 1. r_sddis[ 1 :0] description default r_sddis[1] low magnetic field state detection 0 r_sddis[0] loss of tracking detection 0 10) r_uvw (addr.0x0b) (addr.0x0b) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - r_uvw_e r_uvw_hys[3:0] r_uvw_res[4:0] these registers contain the configuration data of uvw commutation output on/off , uvw commutation output hysteresis and uvw commutation output resolution . 10 - 1. r_uvw_e register r_ uvw_e register contains the configuration data of uvw commutation output on/off. in case of off setting , the u, v, w pin goes to high - impedance (hi - z) output. uvw output r_ uvw_e default off 0x0 on 0x1
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 25 10 - 2. r_uvw_hys register r_ uvw _hys registers contain the configuration data of hysteresis filter parameter. this parameter defines whether the uvw commutation output is updated or not in response to the processing raw angle data change. the uvw commutation output is not updated when the processing raw angle data change is smaller than the hysteresis parameter. the hysteresis parameter lsb is defined to be equal to the lsb for 14 - bit angle output data. w arning: this hysteresis parameter works independently of r_ abz_hys setting . the rel ationship between r_uvw_hys [3: 0] and the hysteresis setting value are as follows . uvw hysteresis r_uvw_hys[3:0] default off 0x0 0lsb 0x1 1lsb 0x2
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 26 10 - 3. r_uvw_res register r_ uvw_res registers contain the configuration data of uvw commutation output resolution. it can be set to an arbitrary value from 2 to 64poles ( 1 to 32 pole pairs). uvw resolution r_ uvw _res [4 :0] default 2poles (1 pole pair) 0x00 4poles (2 pole pairs) 0x01 6poles (3 pole pairs) 0x02 8 poles (4 pole pairs) 0x03
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 27 19. eeprom address map / description ? eeprom address map address eeprom name permission content normal mode user mode user mode2 0x00 mem_0[11:0] n/a n/a n/a akm reserved 0x04 e_id1[11:0] r/w r/w free eeprom for user 0x08 e_id2[11:0] r/w r/w free eeprom for user 0x0c mem_ c [11:0] n/a n/a akm reserved 0x10 mem_10[11:0] n/a n/a akm reserved 0 x14 e_zp_u[1:0] r/w r/w 14 - bit zero degree point setting (upper 2 - bit) 0 x18 e_zp_l[11:0] r/w r/w 14 - bit zero degree point setting (lower 12 - bit) 0 x1c e_rdabz[7:0] r/w r/w rotation direction setting z - phase pulse width setting abz output on/off setting abz output hysteresis setting 0x20 e_abzres[11:0] r/w r/w abz output resolution setting 0x24 e_mlk[1:0] r/w r/w memory lock key 0x28 e_sddis[ 1 :0] r/w r/w self - diagnostic on/off setting 0x2c e_uvw[9:0] r/w r/w uvw output on/off setting uvw output hysteresis setting uvw output resolution setting 0x40 e_ofstx[9:0] n/a r/w x - axis offset correction setting 0x44 e_ofsty[9:0] r/w y - axis offset correction setting 0x48 e_orth[11:0] r/w orthogonality error correction setting 0x4c e_gm[11:0] r/w gain mismatch correction setting (n/a: not available, r: read only, w: write only, r/w: full access) ? eeprom description 1) e_id1, e_id2 (addr. 0x04, 0x08) (addr.0x04) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 e_id1[11:0] (addr.0x08) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 e_id2[11:0] these eeprom can be u se d freely for purpose such as individual identification information or lot information . default eeprom data is 0x000.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 28 2) e_zp_ u, e_zp_l (addr. 0x14, 0x18) (addr.0x14) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - e_zp_u[1:0] (addr.0x18) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 e_zp_l[11:0] these eeprom contain the configuration data of zero degree point. this data is used as a reference of the output angle data. to validate the user configuration in normal mode, it is necessary to store the configuration data in e_zp_u and e_zp_l via writeeeprom operation code in user mode. zero degree point[ o ] e_zp_u[1:0] e_zp_l[11:0] default 0 0x0 0x000 ? ? ? 89.978 0x0 0xfff 90.000 0x1 0x000 ? ? ? 359.956 0x3 0xffe 359.978 0x3 0xfff note 11: the value set in this register is also reflected in abz and uvw output. 3) e_ rdabz (addr.0x1c) (addr.0x1c) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - e_rd e_z_width [1:0] e_abz_e e_abz_hys[3:0] these eeprom contain the configuration data of rotation direction, z - phase pulse width , abz incremental output on/off and abz incremental output hysteresis. to validate the user configuration in normal mode, it is necessary to store the configuration data in e_ r dabz via writeeeprom operation code in user mode. 3 - 1. e_rd eeprom e_rd eeprom contains the configuration data of magnet rotation direction. configura tion of the magnet rotation direction defines the increase or decrease of the output angle data relative to the magnet rotation direction. in case of selecting ccw (counter - clockwise), the output angle data increases in response to counter - clockwise magnet rotation. c ounter - clockwise is defined by the 1 - 8 - 9 - 16 pin order direction for tssop - 16 package top view position. in case of selecting cw (clockwise), the output angle data increases in response to clockwise magnet rotation. clockwise is defined by the 16 - 9 - 8 - 1 pin order direction for tssop - 16 package top vi ew.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 29 rotation direction e_rd default ccw 0x0 3 - 2. e_z_width eeprom e _z_width eeprom stores z phase pulse width setting data. in any setting, the z phase output generates pulse at the 0o position. in z - width 1 lsb mode setting, the z - phase pulse width is quarter of one cycle of a phase. in z - width 1 lsb mode setting, the z - phase pulse width is equal to one cycle of a phase. in 180 deg. point switch mode setting, the z phas e outputs h level from the 0o pos ition to the 180o position and l level from the 180o position to the 360o position. z - phase output e_z_width [1:0] default z - width 1lsb mode 0x0 180deg. point switch mode 0x1 z - width 4lsb mode 0x2 3 - 3. e_abz_e eeprom e_abz_e eeprom contains the configuration data of abz incremental output on/off. in case of off , the a, b, z pin goes to high - impedance (hi - z) output. abz output e_abz_e default off 0x0 on 0x1 3 - 4. e_abz_hys eeprom e_abz_hys eeprom contains the configuration data of hysteresis filter parameter. this parameter defines whether the output angle data is updated or not in response to the processing raw angle data change. the output angle data is not upda ted when the processing raw angle data change is small er than the hysteresis width . the hysteresis parameter lsb is defined to be equal to the lsb for 14 - bit angle output data. when the hysteresis width is increased, the data oscillation influence caused by noisy environment and/or mod ule vibration is decreased. however the maximum ou tput delay is increased as described below equation. maximum output delay t d = 1.8s + (1+ abz hysteresis) ? 0.18s note1 2: abz hyster e sis in the above expression is the number of lsb set by r_abz_hys [3:0]. (example: abz hyster e sis = 3 when r_abz_hys [3:0] = 0x4.) in case of off setting, the output angle data equals the processing raw angle data. the inherent lsb dat a flickering (note1 3 ) is not eliminated from the output angle data. the maximum output delay is the shortest (1.8s) at this setting. in case of 0lsb setting, the inherent lsb data flickering is eliminated from the output angle data. the maximum output d elay is 1.98s at this setting. note1 3 . the lsb data flickering inheres in the type2 tracking loop architecture. this data flickering appears even in the ideal environment under noise free case. therefore akm do not recommend off setting.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 30 figure 8 : abz hysteresis setting diagram the relationship between e _abz_hys [3: 0] and the hysteresis set value are as follows . abz hysteresis e_abz_hys[3:0] default off 0x0 0lsb 0x1 1lsb 0x2 0 x001 0 0.022 0 .044 0 .066 0 x000 0 x002 0 x003 angle position output data 0 x001 0 0.022 0 .044 0 .066 0 x000 0 x002 0 x003 angle position output data c w c c w data flickering c w c c w off setting 0lsb setting 0 x001 0 0 .022 0 .044 0 .066 0 x000 0 x002 0 x003 angle position output data 0 x001 0 0.022 0 .044 0 .066 0 x000 0 x002 0 x003 angle position output data c w c c w c w c c w 1lsb setting 2 lsb setting
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 31 4) e_abzres (addr. 0x20) (addr.0x20) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 e_abzres[11:0] these eeprom contain the configuration data of abz incremental output resolution. it is programmable to an arbitrary value from 1 to 4096ppr. to validate the user configuration in normal mode, it is necessary to store the configuration data in e_abzres via writeeeprom operation code in user mode. abz resolution e_ abz_res[11:0] default 1ppr 0x000 2ppr 0x001 3ppr 0x002 ? ? 1000ppr 0x 3e7 ? ? 2500ppr 0x9c3 ? ? 4095ppr 0xffe 4096ppr 0xfff 5) e_mlk (addr. 0x24) (addr.0x24) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - e_mlk[1:0] these eeprom contain the 2 - bit memory lock key data. to prevent eeprom from rewriting incorrectly, it is necessary to store the memory lock key data in e_mlk via writeeeprom operation code in user mode. memory condition e_mlk[1:0] default locked 0x0 locked 0x1 locked 0x2 unlocked 0x3
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 32 6) e_sddis (addr. 0x28) (addr.0x28) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - e_sddis[1:0] these eeprom contain the configuration data for the self - diagnostic functions. to disable a specific diagnostic function, the corresponding bit should be set to 1. to validate the user configuration in normal mode, it is necessary to store the configuration data in e_ sddis via writeeeprom operation code in user mode. e_sddis[1:0] description default e_sddis[1] under magnetic flux density detection 0 e_sddis[0] tracking lost condition detection 0 7) e_uvw (addr. 0x2c) (addr.0x2c) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - e_uvw_e e_uvw_hys[3:0] e_uvw_res[4:0] these eeprom contain the configuration data of uvw commutation output on/off, uvw commutation output hysteresis and uvw commutation output resolution. to validate the user configuration in normal mode, it is necessary to store the configuration data in e_ uvw via writeeeprom operation code in user mode. 7 - 1. e_uvw_e eeprom e_uvw_e eeprom contains the configuration data of uvw commutation output on/off. in case of off setting , the u, v, w pin goes to high - impedance (hi - z) output. uvw output e_uvw_e default off 0x0 on 0x1
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 33 7 - 2. e_uvw_hys eeprom e_uvw_hys eeprom contains the configuration data of hysteresis filter parameter. this parameter defines whether the uvw commutation output is updated or not in response to the processing raw angle data change. the uvw commutation output is not updated whe n the processing raw angle data change is small er than the hysteresis width . the hysteresis parameter lsb is defined to be equal to the lsb for 14 - bit angle output data. warning: this parameter works independently of e_abz_hys setting. the relationship between e _uvw_hys [3:0] and the hysteresis setting value are as follows . uvw hysteresis e_uvw_hys[3:0] default off 0x0 0lsb 0x1 1lsb 0x2 7 - 3. e_uvwres eeprom e_uvw_res eeprom contains the configuration data of uvw commutation output resolution. it can be set to an arbitrary value from 2 to 64poles ( 1 to 32 pole pairs). uvw resolution e_uvw_res [4:0] default 2poles (1 pole pair) 0x00 4poles (2 pole pairs) 0x01 6poles (3 pole pairs) 0x02 8 poles (4 pole pairs) 0x03
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 34 40 poles (20 pole pairs) 0x13 42 poles (21 pole pairs) 0x14 44 poles (22 pole pairs) 0x15 46 poles (23 pole pairs) 0x16 48 poles (24 pole pairs) 0x17 50 poles (25 pole pairs) 0x18 52 poles (26 pole pairs) 0x19 54 poles (27 pole pairs) 0x1a 56 poles (28 pole pairs) 0x1b 58 poles (29 pole pairs) 0x1c 60 poles (30 pole pairs) 0x1d 62 poles (31 pole pairs) 0x1e 64 poles (32 pole pairs) 0x1f 8) e_ofstx (addr. 0x40) (addr.0x40) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - e_ofstx[9:0] these eeprom contain the configuration data of x - axis offset adjustment. to validate the user configuration in normal mode, i t is necessary to store the configuration data in e_ofstx via writeeeprom operation code in user mode2. to change these settings, please refer to AK7452 application note for user mode2. in case of changing these parameters, akm recommends the initial setting parameters a re copied to your back up memory in advance for setting recovery. warning : these setting parameters are trimmed at our factory for ideal shaft - end mounting. in case of changing these parameters, the electrical and magnetic characteristics are not guarante ed in normal mode. 9) e_ofsty (addr. 0x44) (addr.0x44) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 - e_ofsty[9:0] these eeprom contain the configuration data of y - axis offset adjustment. to validate the user configuration in normal mode, i t is necessary to store the configuration data in e_ofsty via writeeeprom operation code in user mode2. to change these settings, please refer to AK7452 application note for user mode2. in case of changing these parameters, akm recommends the initial setting parameters a re copied to your back up memory in advance for setting recovery. warning : these setting parameters are trimmed at our factory for ideal shaft - end mounting. in case of changing these parameters, the electrical and magnetic characteristics are not guarante ed in normal mode.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 35 10) e_orth (addr. 0x48) (addr.0x48) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 e_orth[11:0] these eeprom contain the configuration data of orthogonality error adjustment. to validate the user configuration in normal mode, i t is necessary to store the configuration data in e_orth via writeeeprom operation code in user mode2. to change these settings, please refer to AK7452 application note for user mode2. in case of changing these parameters, akm recommends the initial setting parameters are copied to your back up memory in advance for setting recovery. warning : these setting parameters are trimmed at our factory for ideal shaft - end mounting. in case of changing these parameters, the electrical and magnetic characteristics are not guaranteed in normal mode. 11) e_gm (addr. 0x4c) (addr.0x4c ) data[11:0] 11 10 9 8 7 6 5 4 3 2 1 0 e_gm[1 1 :0] these eeprom contain the configuration data of gain mismatch adjustment. to validate the user configuration in normal mode, i t is necessary to store the configuration data in e_gm via writeeeprom operation code in user mode2. to change these settings, please refer to AK7452 application note for user mode2. in case of changing these parameters, akm recommends the initial setting parameters are copied to your back up memory in advance for setting recovery. warning : these setting parameters are trimmed at our factory for ideal shaft - end mounting. in case of changing these parameters, the electrical and magnetic characteristics are not guarant eed in normal mode.
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 36 20. m agnet angle position, output and rotation direction figure 9 shows the output angle of the AK7452 at the time of shipment and the positional relationship between the package and the magnet (when the zero point setting is the default value). since these relationships have alignment errors of about a few degrees, if you want to accurately determine the positional relationship with the magnet, please adjust using the zero point setting. also, the default value of the rotation direction setting is counterclockwise (ccw). ccw is defined as the direction of turning pin n umber 1 - 8 - 9 - 16 in pin tssop - 16 package. figure9 : relationship between magnet position and angle output and direction of rotation in default setting 1 16 8 9 1 8 4 5 0 1 16 8 9 90 s n n n s top view ccw ccw
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 37 21. package information 21.1. tssop16 C package dimensions 21.2. marking information 1 16 79 a z v ss nc u v w nc error b 8 9 [top view] a k 7 4 5 2 3 d 8 2 0 n product na me week code year code test e vdd miso sclk csn mosi lot no. (lower digit) fab code production ctrl code a k 7 4 5 2 3 d 8 2 0 n 0 b 10b 0 . 1 7 0 . 0 5 6 . 4 0 0 . 2 0 4 . 4 0 0 . 1 0 1 8 16 9 0.13 m 0.65 0.220.08 5.000.08 0 . 0 7 + 0 . 0 3 - 0 . 0 4 1 . 0 0 0 . 0 5 s 0.10 s 0 . 5 0 0 . 2 0 1 . 0 7 + 0 . 0 3 - 0 . 0 7
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 38 21.3. sensitive spot positioning 0. 285 0. 1 mm 1 8 9 16 ? 0.2mm p kg center sensor center sensor center
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 39 22. revision history date (y/m/d) revision reason page contents 2018/03/06 00 first edition 2018/03/30 01 release all deleted
[ ak 7452 ] 018002740 - e - 0 1 201 8 / 03 40 i m portant notice important notice 0. asahi kasei microdevices corporation (akm) reserves the right to make changes to the information contained in this document without notice. when you consider any use or application of akm product stipulated in this document (product), please make inquiries the sales office of akm or authorized distributors as to current status of the products. 1. all information included in this document are provided only to ill ustrate the operation and application examples of akm products. akm neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property r ights or any other rights of akm or any third party with respect to the information in this document. you are fully responsible for use of such information contained in this document in your product design or applications. akm assumes no liability for any losses incurred by you or third parties arising from the use of such information in your product design or applications. 2. the product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality a nd/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact, including but not limited to, equipment used in nuclear facilities, equipment used in the aerospace in dustry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power , and equipment used in finance - related fields. do not use product for the above use unless specifically agreed by akm in writing. 3. though akm works continually to improve the products quality and reliability, you are responsible for complying with safe ty standards and for providing adequate designs and safeguards for your hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of the product could cause loss of human life, bodily injury or damage to prop erty, including data loss or corruption. 4. do not use or otherwise make available the product or related technology or any information contained in this document for any military purposes, including without limitation, for the design, development, use, st ockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). when exporting the products or related technology or any information contained in this document, you should comply with the ap plicable export control laws and regulations and follow the procedures required by such laws and regulations. the products and related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 5. please contact akm sales representative for details as to environmental matters such as the rohs compatibility of the product. please use the product in compliance with all applicable laws a nd regulations that regulate the inclusion or use of controlled substances, including without limitation, the eu rohs directive. akm assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 6. resale of the product with provisions different from the statement and/or technical features set forth in this document shall immediately void any warranty granted by akm for the product and shall not create or extend in any manner whatsoever, any liabilit y of akm. 7. this document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of akm.

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