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datashee t product structure silicon monolithic integrated circuit this product is not designed prot ection against radioactive rays 1/27 tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 14 ? 001 www.rohm.com serial eeprom series automotive eeprom 125 operation microwire bus eeprom(3-wire) br93hxx-wc (2k 4k 8k 16k) general description br93h xx -wc is a serial eeprom of serial 3-line interface method. features ? conforming to microwire bus ? withstands electrostatic voltage 8kv, (hbm method typ.,except br93h66rfvm-wc) ? wide temperature range -40 to +125 ? same package line up and same pin configuration ? 2.7v to 5.5v single supply voltage operation ? address auto increment function at read operation ? write mistake prevention function ? write prohibition at power on ? write prohibition by command code ? write mistake prevention circuit at low voltage ? program cycle auto delete and auto end function ? program condition display by ready / busy ? low current consumption ? at write operation (at 5v) : 0.6ma (typ.) ? at read operation (at 5v) : 0.6ma (typ.) ? at standby condition (at 5v) : 0.1 a(typ.)(cmos input) ? built-in noise filter cs, sk, di terminals ? high reliability by rohm original double-cell structure ? data retention for 20 years (ta 125 ) ? endurance up to 300,000 times (ta 125 ) ? data at shipment all address ffffh ? aec-q100 qualified packages w(typ.) x d(typ.) x h(max.) br93 hxx-wc package type sop8 sop-j8 msop8 capacity bit format type power source voltage rf rfj rfvm 2kbit 128 16 br93h56-wc 2.7v to 5.5v 4kbit 256 16 br93h66-wc 2.7v to 5.5v 8kbit 512 16 br93h76-wc 2.7v to 5.5v 16kbit 1k 16 br93h86-wc 2.7v to 5.5v sop8 5.00mm x 6.20mm x 1.71mm sop-j8 4.90mm x 6.00mm x 1.65mm msop8 2.90mm x 4.00mm x 0.90mm downloaded from: http:///
datasheet datasheet 2/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com absolute maximum ratings (ta=25 ) parameter symbol limits unit remarks impressed voltage v cc -0.3 to +6.5 v permissible dissipation pd 0.56 (sop8) w when using at ta=25 or higher, 4.5mw, to be reduced per 1 . 0.56 (sop-j8) when using at ta=25 or higher, 4.5mw, to be reduced per 1 . 0.38 (msop8) when using at ta=25 or higher, 3.1mw, to be reduced per 1 . storage temperature range tstg -65 to +150 operating temperature r ange topr -40 to +125 terminal voltage \ -0.3 to v cc +0.3 v memory cell characteristics (v cc =2.7v to 5.5v) parameter limit limit limit min. typ. max. endurance *1 1,000,000 - - times ta 85 500,000 - - times ta 105 300,000 - - times ta 125 data retention *1 40 - - years ta 25 20 - - years ta 125 *1 not 100 tested recommended operating ratings parameter symbol limits unit power source voltage v cc 2.7 to 5.5 v input voltage v in 0 to v cc electrical characteristics (unless otherwise specified, ta=-40 to +125 , v cc =2.7v to 5.5v) parameter symbol limits unit conditions min. typ. max. l input voltage v il -0.3 - 0.3x v cc v h input voltage v ih 0.7x v cc - v cc +0.3 v l output voltage 1 v ol1 0 - 0.4 v i ol =2.1ma, 4.0v v cc 5.5v l output voltage 2 v ol2 0 - 0.2 v i ol =100 a h output voltage 1 v oh1 2.4 - v cc v i oh =-0.4ma, 4.0v v cc 5.5v h output voltage 2 v oh2 v cc -0.2 - v cc v i oh =-100 a input leak current i li -10 - 10 a v in =0v to v cc output leak current i lo -10 - 10 a v out =0v to v cc , cs=0v current consumption i cc1 - - 3.0 ma f sk =1.25mhz, t e/w =10ms (write) i cc2 - - 1.5 ma f sk =1.25mhz (read) i cc3 - - 4.5 ma f sk =1.25mhz, t e/w =10ms (wral) standby current i sb - 0.1 10 a cs=0v, do=open operating timing characteristics (unless otherwise specified, ta=-40 to +125 , v cc =2.7v to 5.5v) parameter symbol min. typ. max. unit sk frequency f sk - - 1.25 mhz sk h time t skh 250 - - ns sk l time t skl 250 - - ns cs l time t cs 200 - - ns cs setup time t css 200 - - ns di setup time t dis 100 - - ns cs hold time t csh 0 - - ns di hold time t dih 100 - - ns data 1 output delay time t pd1 - - 300 ns data 0 output delay time t pd0 - - 300 ns time from cs to output establishment t sv - - 200 ns time from cs to high-z t df - - 200 ns write cycle time t e/w - 7 10 ms write cycle time(br93h66rfvm-wc) t e/w - - 5 ms downloaded from: http:///
datasheet datasheet 3/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com sync data input / output timing data is taken by di sync with the rise of sk. at read operation, data is output from do in sync with the rise of sk. the status signal at write (ready / busy) is output after tcs fr om the fall of cs after write command input, at the area do where cs is h, and valid until the next command start bi t is input. and, white cs is l, do becomes high-z. after completion of each mode execution, set cs l once for internal circuit reset, and execute the following operation mode. cs sk do(read) di do(write) tcss tskh tskl tcsh tdis tdih tpd1 t pd0 tdf status valid downloaded from: http:///
datasheet datasheet 4/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com block diagram pin configurations pin descriptions br93h56rf-wc:sop8 br93h56rfj-wc:sop-j8 cs sk di do top view v cc nc test gnd pin name i / o function vcc - power source gnd - all input / output reference voltage, 0v cs input chip select input sk input serial clock input di input start bit, ope code, address, and serial data input do output serial data output, ready / busy internal condition display output nc - non connected terminal, vcc, gnd or open test1 - test terminal, gnd or open test2 - test terminal, vcc, gnd or open test - test terminal, gnd or open cs sk di do top view v cc test2 test1 gnd br93h66rf-wc:sop8 BR93H66RFJ-WC:sop-j8 br93h66rfvm-wc:msop8 br93h76rf-wc:sop8 br93h76rfj-wc:sop-j8 br93h86rf-wc:sop8 br93h86rfj-wc:sop-j8 command decode control clock generation power source voltage detection write prohibition high voltage occurrence command register address buffer sk di dummy bit do data register r/w amplifier 7bit 8bit 9bit 10bit 7bit 8bit 9bit 10bit 16bit 16bit 2,048 bit4,096 bit 8,192 bit 16,384 bit eeprom cs address decoder 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 downloaded from: http:///
datasheet datasheet 5/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com typical performance curves (the following characteristic data are typ. values.) figure 1. h input voltage vih (cs, sk, di) figure 2. l input voltage vil (cs, sk, di) figure 3. l output voltage vol-iol (vcc=2.7) figure 4. l output voltage vol-iol (vcc=4.0v) downloaded from: http:///
datasheet datasheet 6/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com typical performance curves \ continued figure 5. h output voltage voh-ioh (vcc=2.7) figure 6. h output voltage voh-ioh (vcc=4.0v) figure 7. input leak cu rrent ili (cs, sk, di) figure 8. output leak current ilo (do) downloaded from: http:///
datasheet datasheet 7/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com typical performance curves \ continued figure 9. current consumpt ion at write operation icc1 (write, fsk=1.25mhz) figure 10. consumption current at read operation icc2 (read, fsk=1.25mhz) figure 11. consumption current at wral operation icc3 (wral, fsk=1.25mhz) figure 12. consumption current at standby condition isb downloaded from: http:///
datasheet datasheet 8/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com typical performance curves \ continued figure 15. sk low time tskl figure 14. sk high time tskh figure 13. sk frequency fsk figure 16. cs low time tcs downloaded from: http:///
datasheet datasheet 9/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com typical performance curves \ continued figure 20. cs hold time tcsh figure 19. di hold time tdih figure 18. di setup time tdis figure 17. cs setup time tcss downloaded from: http:///
datasheet datasheet 10/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com typical performance curves \ continued figure 24. time from cs to high-z tdf figure 23. time from cs to output establishment tsv figure 22. data 0 output delay time tpd0 figure 21. data 1 output delay time tpd1 downloaded from: http:///
datasheet datasheet 11/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com typical performance curves \ continued figure 25. write cycle time te/w 0 1 2 3 4 5 6 23456 supply voltage : vcc(v) write cycle time : te/w (m s) spec ta=25 ta=125 ta=-40 figure 26. write cycle time te/w (br93h66rfvm-wc) downloaded from: http:///
datasheet datasheet 12/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com description of operations communications of the microwire bus are carried out by sk (seria l clock), di (serial data input), do (serial data output), and cs (chip select) for device selection. when to connect one eeprom to a microcontroller, connect it as shown in figure 27-(a) or figure 27-(b). when to use the input and output common i/o port of the microcontroller, connect di and do via a resi stor as shown in figure 27-(b) (refer to page 16.), and connection by 3 lines is available. in the case of plural connections, refer to figure 27-(c). communications of the microwire bus are started by the first 1 input after the rise of cs. this input is called a start bit. after input of the start bit, input ope code, address and dat a. address and data are input all in msb first manners. 0 input after the rise of cs to the star t bit input is all ignored. therefore, when there is limitation in the bit width of p io of the microcontroller, input 0 before the st art bit input, to control the bit width. command mode command start bit ope code address data br93h56/66-wc br93h76/86-wc read (read) *1 1 10 a7,a6,a5,a4,a3,a2,a1,a0 a9,a8,a7,a6,a5,a4,a3,a2,a1,a0 d15 to d0(read data) write enable (wen) 1 00 1 1 * * * * * * 1 1 * * * * * * * * write (write) *2 1 01 a7,a6,a5,a4,a3,a2,a1,a0 a9,a8,a7,a6,a5,a4,a3,a2,a1,a0 d15 to d0(write data) write all (wral) *2 , 3 1 00 0 1 * * * * * b0 0 1 * * * * * b2,b1,b0 d15 to d0(write data) write disable (wds) 1 00 0 0 * * * * * * 0 0 * * * * * * * * ? input the address and the data in msb first manners. ? as for *, input either vih or vil. *start bit acceptance of all the commands of this ic starts at recognition of the start bit. the start bit means the first 1 input after the rise of cs. *1 as for read, by continuous sk clock input after settin g the read command, data output of the set address starts, and address data in significant order are sequentia lly output continuously. (auto increment function) *2 when the read and the write all commands are executed, data written in the selected memory cell is automatically deleted, a nd input data is written. *3 for the write all command, data written in memory cell of the areas designated by b2, b1, and b0, are automatically deleted, and input data is written in bulk. write all area ? the write all command is written in bulk in 2kbit unit. the write area can be selected up to 3bit. confirm t he settings and write areas of the above b2, b1, and b0. figure 27. connection method with microcontroller figure 27-(a) connection by 4 lines cs sk do di cs sk do cs sk di do figure 27-(b) connection by 3 lines cs sk di do cs3cs1 cs0 sk do di figure 27-(c) connection exam ple of plural devices micro- controller br93hxx micro- controller br93hxx a7 and b0 of br93h56-wc becomes don't care. a9 and b2 of br93h76-wc becomes don't care. micro- controller b2 b1 b0 write area 0 0 0 000h to 07fh 0 0 1 080h to 0ffh 0 1 0 100h to 17fh 0 1 1 180h to 1ffh 1 0 0 200h to 27fh 1 0 1 280h to 2ffh 1 1 0 300h to 37fh 1 1 1 380h to 3ffh designation of b2, b1, and b0 h56 h66 b0 h76 b1 b0 h86 b2 b1 b0 cs sk di do device 1 cs sk di do device 2 cs sk di do device 3 downloaded from: http:///
datasheet datasheet 13/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com timing chart 1) read cycle (read) *1 start bit when data 1 is input for the first time after the rise of cs, this is recognized as a start bit. and when 1 is input after plural 0 are input, it is recognized as a start bit, and the following operation is started. this is common to all the commands to described hereafter . when the read command is recognized, input address data (16bit) is output to serial. and at that moment, at taking a0, in sync with the rise of sk, 0 (dummy bit) is output. and, the following data is output in sync with the rise of sk. this ic has address auto increment functi on valid only at read command. this is the function where after the above read execution, by continuously inputting sk clock, the above addre ss data is read sequentially. and, during the auto increment, keep cs at h. 2) write cycle (write) in this command, input 16bit data (d15 to d0) are written to designated addresses (am to a0). the actual write starts by the fall of cs of d0 taken sk clock(n-th clock from t he start bit input), to the rise of the (n+1)-th clock. when status is not detected, (cs="l" fixed) max. 10ms(max.5ms:br93h66rfvm-wc) in conformity with te/w, and when status is detected (cs="h"), all commands are not accepted for areas wh ere "l" (busy) is output from d0, therefore, do not input any command. write is not made even if cs is started after input of clock after (n+1)-th clocks. note) take tskh or more from the rise of the n-th clock to the fall of cs. 3) write all cycle (wral) in this command, input 16bit data is written simultaneously to designated block for 128 words. data is writen in bulk at a write time of only max. 10ms(max.5ms:br93h66rfvm-wc) in c onformity with te/w. when writing data to all addresses, designate each block by b2, b1, and b0, and execute write. write time is max.10ms(max.5ms:br93h66rfvm-wc). the actual write starts by the fall of cs from the rise of d0 ta ken at sk clock (n-th clock from t he start bit input), to the rise of the (n+1)-th clock. when cs is ended after clock input after the rise of the (n+1)-th clock, co mmand is cancelled, and write is not completed. note)take tskh or more from the rise of the n-th clock to the fall of cs. br93h56/66-wc : n=27, m=7 br93h76/86-wc : n=29, m=9 cs 1 2 1 4 high-z 1 am a1 a0 0 d15 d14 d1 d15 d14 *1 *2 d0 sk di do 0 n n+1 *2 the following address data output (auto increment function) t - t o k 5 5 t br93h56/66-wc : n=27, m=9 br93h76/86-wc : n=29, m=11 br93h56/66-wc : n=27, m=7 br93h76/86-wc : n=29, m=9 figure 30. write all cycle figure 29. write cycle figure 28. read cycle cs 1 1 4 high-z 0 am a1 a0 d15 d14 d1 d0 sk di do 1 n status tcs tsv busy te/ w ready 2 downloaded from: http:///
datasheet datasheet 14/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com 4) write enable (wen) / disable (wds) cycle at power on, this ic is in write disable status by the internal reset circuit. before executing the write command, it is necessary to exec ute the write enable command. and, once this command is executed, it is valid unitl the write disabl e command is executed or the power is turned off. however, the read command is valid irrespective of write enable / di sable command. input to sk after 6 clocks of this command is available by either h or l, but be sure to input it. when the write enable command is executed after po wer on, write enable status gets in. when the write disable command is executed then, the ic gets in write disable status as same as at power on, and then the write command is cancelled thereafter in software manner. however, the read command is executable. in write enable status, even when the writ e command is input by mistake, write is started. to prevent such a mistake, it is recommended to execute the write disable command after completion of write. application 1) method to cancel each command read write, wral *1 address is 8 bits in br93h56/66-wc address is 10 bits in br93h76/86-wc *2 27 clocks in br93h56/66-wc 29 clocks in br93h76/86-wc *3 28 clocks in br93h56/66-wc 30 clocks in br93h76/86-wc figure 32. read cancel available timing figure 33. write, wral cancel available timing br93h56/66-wc : n=11 br93h76/86-wc : n=13 a from start bit to 27 clock rise cancel by cs=l b 27 clock rise and after * 2 cancellation is not available by any means. if vcc is made off in this area, designated address data is not guaranteed, therefore write once again. c 28 clock rise and after * 3 cancel by cs=l however, when write is started in b area (cs is ended), cancellation is not available by any means. and when sk clock is input continuously, cancellation is not available. *1 address is 8 bits in br93h56-wc, and br93h66-wc. address is 10 bits in br93h76-wc, and br93h86-wc. a c b sk ? rise of 27clock *2 d1 enlarged figure d0 di 26 27 28 29 a b c note 1) if vcc is made off in this area, designated address data is not guaranteed, therefore write once again. note 2) if cs is started at the same timing as that of the sk rise, write execution/cancel becomes unstable, therefore, it is recommended to fail in sk=l area. as for sk rise, recommend timing of tcss/tcsh or higher. cs 1 2 1 5 high-z 0 0 sk di do n 3 4 6 7 8 enable=1 1 disable=0 0 f igure 31. write enable (wen) / disable (wds) cycle 1bit 2bit 8bit 16bit cancel is available in all areas in read mode. method to cancel cancel by cs= l *1 start bit ope code a ddress data *1 1bit 2bit 8bit 16bit start bit ope code a ddress data te/w (case of br93h56-wc ) downloaded from: http:///
datasheet datasheet 15/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com 2) equivalent circuit output circuit input circuit 3) i/o peripheral circuit 3-1) pull down cs. by making cs=l at power on/off, mistake in operation and mistake write are prevented. refer to the item 6) notes at power on/off in page 20. pull down resistance rpd of cs pin to prevent mistake in operation and mistake write at power on/off, cs pull down resistance is necessary. select an appropriate value to this resistance value from microcontroller voh, ioh, and vil characteristics of this ic. rpd ??? do oeint. cs reset int. lpf csint. en test2 figure 34. output circuit (do) figure 37. input circuit (sk, di) figure 35. input circuit (cs) figure 38. input circuit (test2) figure 39. cs pull down resistance test1 (test) testint. sk di en lpf sk(di)int. figure 36. input circuit (test1, test) microcontroller vohm h output iohm rpd vihe l input eeprom vohm iohm 2.4 2 10 -3 rpd 1.2 [k ] vohm vihe ??? rpd example) when v cc =5v, vihe=2v, vohm=2.4v, iohm=2ma, from the equation , with the value of rpd to satisfy the above equation, vohm becomes 2.4v or higher, and vihe (=2.0v), the equation is also satisfied. : eeprom vih specifications : microcontroller voh specifications :microcontroller ioh specifications ? vihe ? vohm ? iohm downloaded from: http:///
datasheet datasheet 16/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com cs sk di do d0 busy ready high-z enlarged cs sk di do busy high-z improvement by do pull up busy ready cs=sk=di=h when do=open cs=sk=di=h when do=pull up do h 3-2) do is available in both pull up and pull down. do output become high-z in other ready / busy out put timing than after data output at read command and write command. when malfunction occurs at hig h-z input of the microcontroller port connected to do, it is necessary to pull down and pull up do. when there is no influence upon the microcontroller operations, do may be open. if do is open, and at timing to output status ready, at timing of cs=h, sk=h, di=h, eeprom recognizes this as a start bit, resets ready output, and do=high-z, therefor e, ready signal cannot be detected. to avoid such output, pull up do pin for improvement. pull up resistance rpu and pull down resistance rpd of do pin as for pull up and pull down resistance value, select an appropr iate value to this resistance value from microcontroller vih, vil, and voh, ioh, vol, iol characteristics of this ic. figure 40. ready output timing at do=open figure 41. do pull up resistance figure 42. do pull down resistance microcontroller vilm l input iole vole l output eeprom rpu rpu ??? 5 0.4 2.1 10 -3 rpu 2.2 [k ] vole vilm ??? rpu example) when v cc =5v , vole=0.4v, iole=2.1ma, vilm=0.8v, from the equation , vcc vole iole with the value of rpu to satisfy the above equation, vole becomes 0.4v or below, and with vilm(=0.8v), the equation is also satisfied. microcontroller vihm h input iohe vohe h output eeprom rpd rpd ??? 5 0.2 0.1 10 -3 rpd 48 [k ] vohe vihm ??? rpd example) when v cc =5v , vohe=vcc 0.2v, iohe=0.1ma, vihm=vcc 0.7v from the equation vohe iohe with the value of rpd to satisfy the above equation, vohe becomes 2.4v or below, and with vihm (=3.5v), the equation is also satisfied. ? vole ? iole ? vilm : eeprom vol specifications : eeprom iol specifications : microcontroller vil specifications ? vole ? iole ? vilm : eeprom voh specifications : eeprom ioh specifications : microcontroller vih specifications ? vohe ? iohe ? vihm downloaded from: http:///
datasheet datasheet 17/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com ready / busy status display (do terminal) (common to br93h56-wc, br93h66-wc, br93h76-wc, br93h86-wc) this display outputs the internal status si gnal. when cs is started after tcs (min.200ns) from cs fall after write command input, h or l output. r/b display l (busy) = write under execution after the timer circuit in the ic works and cr eates the period of te/w, this time circuit complete s automatically. and write to the memory cell is made in the period of te/w, and during this period, other command is not accepted. r/b display = h (ready) = command wait status even after te/w (max.10ms) (max.5ms:br 93h66rfvm-wc) from write of the memory cell, the following command is accepted. therefore, cs=h in the period of te/w , and when input is in sk, di, malfunction may occur, therefore, di=l in the area cs=h. (especially , in the case of shared input port, attention is required.) *do not input any command while status signal is output. command input in busy area is cancelled, but command input in ready ar ea is accepted. therefore, status ready output is cancelled, and malfunction and mistake write may be made. 4) when to directly connect di and do this ic has independent input terminal di and output terminal do, and separate signals are handled on timing chart, meanwhile, by inserting a resistance r between these di and do terminals, it is possible to carry out control by 1 control line. data collision of microcontroller di/o output and do output and feedback of do output to di input. drive from the microcontroller di/o output to di input on i/o timing, and signal output from do output occur at the same time in the following points. 4-1) 1 clock cycle to take in a0 address data at read command dummy bit 0 is output to do terminal. when address data a0 = 1 input, through current route occurs. cs high-z sk di do clock write instruction ready busy status (do status) (do status t sv microcontroller di/o port di eeprom do r figure 44. di, do control line common connection eeprom cs input eeprom sk input eeprom di input eeprom do output microcontroller di/o port a1 high-z collision of di input and do output h a0 0 d15 d14 d13 a1 a0 high-z microcontroller output microcontroller input figure 45. collision timing at read data output at di, do direct connection figure 43. r/b status output timing chart downloaded from: http:///
datasheet datasheet 18/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com 4-2) timing of cs = h after write command. do terminal in ready / busy function output. when the next start bit input is recognized, high-z gets in. especially, at command input after write, when cs input is started with microcontroller di/o output l, ready output h is output from do te rminal, and through current route occurs. feedback input at timing of these 4-1) and 4-2) does not cause disorder in basic operations, if resistance r is inserted. selection of resistance value r the resistance r becomes through current limit resistance at data collision. when through current flows, noises of power source line and instantaneous stop of power source ma y occur. when allowable through current is defined as i, the following relation should be satisfied. determine allow able current amount in consi deration of impedance and so forth of power source line in set. and insert resistance r, and set the value r to satisfy eeprom input level vih/vil, even under influence of voltage decline owing to leak current and so forth. insertion of r will not cause any influence upon basic operations. 4-3) address data a0 = 1 input, dummy bit 0 output timing (when microcontroller di/o output is h, eepr om do outputs l, and h is input to di) ? make the through current to eeprom 10ma or below. ? see to it that the input level vih of eeprom should satisfy the following. eeprom cs input eeprom sk input eeprom di input eeprom do output microcontroller di/o port write command microcontroller output busy busy ready ready ready collision of di input and do output hig h-z write command write command write command write command microcontroller input microcontroller output figure 46. collision timing at di, do direct connection microcontroller di/o port di eeprom do r h output iohm vohm vole l output figure 47. circuit at di, do direct connection (microcontroller di/o h output, eeprom l output) c on di t i ons vohm vihe vohm iohm r + vole at this moment, if vole=0v, vohm iohm r r ??? vohm iohm : eeprom vih specifications : eeprom vol specifications : microcontroller voh specifications : microcontroller ioh specifications ? vihe ? vole ? vohm ? iohm downloaded from: http:///
datasheet datasheet 19/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com 4-4) do status ready output timing (when the microcontroller di/o is l, eeprom do outputs h, and l is input to di) ? set the eeprom input level vil so as to satisfy the following. 5) notes at test pin wrong input there is no influence of external input upon test2 pin. for test1 (test)pin, input must be gnd or open. if h level is input, the following may occur, 1. at wen, wds, read command input there is no influence by test1 (test) pin. 2. write, wral command input microcontroller di/o port di eeprom do r l output iohm volm vohe h output volm vile volm vohe C iolm r as this moment, if vohe=vcc, volm vcc C iolm r r ??? vcc C volm iolm figure 48. circuit at di, do direct connection (microcontroller di/o l output, eeprom h output) example) when vcc=5v, vohm=5v, iohm=0.4ma, volm=5v, iolm=0.4ma, from the equation , from the equation , r r vohm iohm 5 0.4 10 -3 r 12.5 [k ] ??? r r vcc C volm iolm 5 C 0.4 2.1 10 -3 r 2.2 [k ] ??? therefore, from the equations and , r 12.5 [k ] start bit ope code address* data t e/ w a 1bits 2bits 8bits 16bits a there is no influence by test1 (test) pin. b if h during write execution, it may not be written correct ly. and h area remains busy and ready does not go back. avoid noise input, and at use, be sure to connect it to gnd terminal or set it open. write start cs rise timing figure 49.test1(test) pin wrong input timing * br93h56-wc, br93h66-wc, address 8 bits br93h76-wc, br93h86-wc, address 10 bits : eeprom vil specifications : eeprom voh specifications : microcontroller vol specifications : microcontroller iol specifications ? vile ? vohe ? volm ? iolm c on di t i ons downloaded from: http:///
datasheet datasheet 20/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com 6) notes on power on/off ? at power on/off, set cs l. when cs is h, this ic gets in input a ccept status (active). at power on, set cs l to prevent malfunction from noise. (when cs is in l status, all inputs are cancelled.) at powe r decline low power status may pr evail. therefore, at power off, set cs l to prevent malfunction from noise. por citcuit this ic has a por (power on reset) circuit as a mistake write countermeasure. after po r operation, it gets in write disable status. the por circuit is valid only when power is on, and does not work when power is off. however, if cs is h at power on/off, it may become write enable status owing to noises and the likes. for secure operation, observe the follwing conditions. 1. set cs=l 2. turn on power so as to satisfy the recommended cond itions of tr, toff, vbot for por circuit operation. lvcc circuit lvcc (v cc -lockout) circuit prevents data rewrite operat ion at low power, and prevents wrong write. at lvcc voltage (typ.=1.9v) or below, it prevent data rewrite. 7) noise countermeasures v cc noise (bypass capacitor) when noise or surge gets in the power source line, malfunc tion may occur, therefore, for removing these, it is recommended to attach a by pass capacitor (0.1 f) between ic v cc and gnd, at that moment, attach it as close to ic as possible.and, it is also recommended to attach a bypass capacitor between board v cc and gnd. sk noise when the rise time (tr) of sk is long, and a certain degree or more of noise exists, malfunction may occur owing to clock bit displacement. to avoid this, a schmitt trigger circuit is built in sk input. t he hysteresis width of this circ uit is set about 0.3, if noises exist at sk input, set the noise amplitude 0.3p-p or below. a nd it is recommended to set the rise time (tr) of sk 100ns or below. in the case when the rise time is 100ns or high er, take sufficient noise countermeasures. make the clock rise, fall time as small as possible. t off t r vbot 0 v cc t r t off vbot 10ms or below 10ms or higher 0.3v or below 100ms or below 10ms or higher 0.2v or below figure 50. timing at power on/off figure 51. rise waveform diagram (bad example) cs pin is pulled up to vcc. in this case, cs becomes h (active status), eeprom may malfunction or have write error due to noises. this is true even when cs input is high-z. (good example it is l at power on/off. set 10ms or higher to recharge at power off. when power is turned on wi thout observing this condition, ic internal circuit may not be reset. recommended conditions of t r , t off , vbot v cc gnd v cc gnd v cc cs bad example good example downloaded from: http:///
datasheet datasheet 21/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com cautions on use (1) described numeric values and data are design repres entative values, and the values are not guaranteed. (2) we believe that application circuit examples are recommendabl e, however, in actual use, confirm characteristics further sufficiently. in the case of use by changing the fixed number of external parts, make your decision with sufficient margin in consideration of static characteristics and transition characteristics and fluct uations of external parts and our ic. (3) absolute maximum ratings if the absolute maximum ratings such as impressed voltage and operating temperature range and so forth are exceeded, ic may be destructed. do not impress voltage and temperatur e exceeding the absolute maximum ratings. in the case of fear exceeding the absolute maximum ratings, take physical sa fety countermeasures such as fuses, and see to it that conditions exceeding the absolute maximum ratings should not be impressed to ic. (4) gnd electric potential set the voltage of gnd terminal lowest at any operating condition. make sure that each terminal voltage is not lower than that of gnd terminal in consid eration of transition status. (5) heat design in consideration of allowable loss in actual use cond ition, carry out heat design with sufficient margin. (6) terminal to terminal shortcircuit and wrong packaging when to package ic onto a board, pay suff icient attention to ic direction and displacement. wrong packaging may destruct ic. and in the case of shortcircuit between ic terminals and terminals and power source, terminal and gnd owing to foreign matter, ic may be destructed. (7) use in a strong electromagnetic field may cause malfunction, therefore, ev aluate design sufficiently. downloaded from: http:///
datasheet datasheet 22/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com ordering information product code description b r 9 3 h x x x x x - w c x x bus type 93 microwire operating temperature -40 to +125 capacity 56=2k 76=8k 66=4k 86=16k package type rf : sop8 rfj : sop-j8 rfvm : msop8 w : double cell c : for automotive application package specifications e2 embossed tape and reel (sop8, sop-j8) tr embossed tape and reel (msop8) lineup capacity package type quantity 2k sop8 reel of 2500 sop-j8 4k sop8 reel of 2500 sop-j8 msop8 reel of 3000 8k sop8 reel of 2500 sop-j8 16k sop8 reel of 2500 sop-j8 downloaded from: http:///
datasheet datasheet 23/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com physical dimension tape and reel information ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tapequantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2500pcs e2 () direction of feed reel 1pin (unit : mm) sop8 0.9 0.15 0.3min 4 + 6 4 0.17 +0.1 - 0.05 0.595 6 4 3 8 2 5 1 7 5.0 0.2 6.2 0.3 4.4 0.2 (max 5.35 include burr) 1.27 0.11 0.42 0.1 1.5 0.1 s 0.1 s downloaded from: http:///
datasheet datasheet 24/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com physical dimension tape and reel information - continued ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tapequantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2500pcs e2 () direction of feed reel 1pin (unit : mm) sop-j8 4 + 6 4 0.2 0.1 0.45min 234 5 6 7 8 1 4.9 0.2 0.545 3.9 0.2 6.0 0.3 (max 5.25 include burr) 0.42 0.1 1.27 0.175 1.375 0.1 0.1 s s downloaded from: http:///
datasheet datasheet 25/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com physical dimension tape and reel information C continued (unit : mm) msop8 0.08 s s 4.0 0.2 8 3 2.8 0.1 1 6 2.9 0.1 0.475 4 5 7 (max 3.25 include burr) 2 1pin mark 0.9max 0.75 0.05 0.65 0.08 0.05 0.22 +0.05C0.04 0.6 0.2 0.29 0.15 0.145 +0.05C0.03 4 + 6 4 direction of feed reel ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tapequantity direction of feed the direction is the 1pin of product is at the upper right when you hold reel on the left hand and you pull out the tape on the right hand 3000pcs tr () 1pin downloaded from: http:///
datasheet datasheet 26/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com marking diagrams marking information capacity product name marking package type 2k rh56 sop8 rh56 sop-j8 4k rh66 sop8 rh66 sop-j8 rh66 msop8 8k rh76 sop8 rh76 sop-j8 16k rh86 sop8 rh86 sop-j8 sop8(top view) part number marking lot number 1pin mark sop-j8(top view) part number marking lot number 1pin mark msop8(top view) part number marking lot number 1pin mark downloaded from: http:///
datasheet datasheet 27/27 br93hxx-wc (2k 4k 8k 16k) tsz02201-0r1r0g100160-1-2 6.nov.2013 rev.002 ?2012 rohm co., ltd. all rights reserved. tsz22111 ? 15 ? 001 www.rohm.com revision history date revision changes 31.aug.2012 001 new release 6.nov.2013 002 p.1 added aec-q100 qualified p.2 changed unit of rd p.22 update product code description. downloaded from: http:///
datasheet d a t a s h e e t notice - ss rev.002 ? 2014 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. if you intend to use our products in devices requiring extremely high reliability (such as medical equipment (note 1) , aircraft/spacecraft, nuclear power controllers, etc.) and whos e malfunction or failure may cause loss of human life, bodily injury or serious damage to property (specific applications), please consult with the rohm sales representative in advance. unless otherwise agreed in writ ing by rohm in advance, rohm shall not be in any way responsible or liable for any damages, expenses or losses in curred by you or third parties arising from the use of any rohms products for specific applications. (note1) medical equipment classification of the specific applications japan usa eu china class class class b class class class 2. rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a certain rate. please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe desi gn against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following are examples of safety measures: [a] installation of protection circuits or other protective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. our products are not designed under any special or extr aordinary environments or conditi ons, as exemplified below. accordingly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any rohms products under an y special or extraordinary environments or conditions. if you intend to use our products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] use of our products in any types of liquid, incl uding water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the products are exposed to direct sunlight or dust [c] use of our products in places where the products ar e exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the products are exposed to static electricity or electromagnetic waves [e] use of our products in proximity to heat-producing components, plastic cords, or other flammable items [f] sealing or coating our products with resin or other coating materials [g] use of our products without cleaning residue of flux (ev en if you use no-clean type fluxes, cleaning residue of flux is recommended); or washing our products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] use of the products in places subject to dew condensation 4. the products are not subjec t to radiation-proof design. 5. please verify and confirm characteristics of the final or mounted products in using the products. 6. in particular, if a transient load (a large amount of load applied in a short per iod of time, such as pulse. is applied, confirmation of performance characteristics after on-boar d mounting is strongly recomm ended. avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading c ondition may negatively affect product performance and reliability. 7. de-rate power dissipation (pd) depending on ambient temper ature (ta). when used in seal ed area, confirm the actual ambient temperature. 8. confirm that operation temperat ure is within the specified range described in the product specification. 9. rohm shall not be in any way responsible or liable for fa ilure induced under deviant condi tion from what is defined in this document. precaution for mounting / circuit board design 1. when a highly active halogenous (chlori ne, bromine, etc.) flux is used, the resi due of flux may negatively affect product performance and reliability. 2. in principle, the reflow soldering method must be used; if flow soldering met hod is preferred, please consult with the rohm representative in advance. for details, please refer to rohm mounting specification downloaded from: http:///
datasheet d a t a s h e e t notice - ss rev.002 ? 2014 rohm co., ltd. all rights reserved. precautions regarding application examples and external circuits 1. if change is made to the constant of an external circuit, pl ease allow a sufficient margin considering variations of the characteristics of the products and external components, including transient characteri stics, as well as static characteristics. 2. you agree that application notes, re ference designs, and associated data and in formation contained in this document are presented only as guidance for products use. theref ore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. please take proper caution in your manufacturing process and storage so that voltage exceeding t he products maximum rating will not be applied to products. please take special care under dry condit ion (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, se tting of ionizer, friction prevention and temperature / humidity control). precaution for storage / transportation 1. product performance and soldered connections may deteriora te if the products are stor ed in the places where: [a] the products are exposed to sea winds or corros ive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to di rect sunshine or condensation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage c ondition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm sol derability before using products of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the co rrect direction, which is indicated on a carton with a symbol. otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. use products within the specified time after opening a humidity barrier bag. baking is required before using products of which storage time is exceeding the recommended storage time period. precaution for product label qr code printed on rohm products label is for rohms internal use only. precaution for disposition when disposing products please dispose them proper ly using an authorized industry waste company. precaution for foreign exchange and foreign trade act since our products might fall under cont rolled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with rohm representative in case of export. precaution regarding intellectual property rights 1. all information and data including but not limited to application example contained in this document is for reference only. rohm does not warrant that foregoi ng information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. rohm shall not be in any way responsible or liable for infringement of any intellectual property rights or ot her damages arising from use of such information or data.: 2. no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the information contained in this document. other precaution 1. this document may not be reprinted or reproduced, in whol e or in part, without prior written consent of rohm. 2. the products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of rohm. 3. in no event shall you use in any wa y whatsoever the products and the related technical information contained in the products or this document for any military purposes, incl uding but not limited to, the development of mass-destruction weapons. 4. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties. downloaded from: http:///
datasheet datasheet notice C we rev.001 ? 2014 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. downloaded from: http:///

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