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1/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 datasheet i 2 c bus 2kbit + 2kbit 2ports serial eeprom BU99022NUX-3 description BU99022NUX-3 series is 2kbit + 2kbit 2ports serial eeprom of i 2 c bus interface method. features ? 2kbit + 2kbit 2ports serial eeprom ? other devices than eeprom can be connected to the same port, saving microcontroller port ? 1.7v 5.5v single power source action most suitable for battery use ? 1.7v 5.5 wide limit of action voltage, possible fast mode 400khz action ? page write mode useful for initial value write at factory shipment ? auto erase and auto end function at data write ? low current consumption ? write mistake prevention function write (write protect) func tion added (only port2 eeprom) write mistake prevention function at low voltage ? vson008x2030 small package ? data rewrite up to 1,000,000 times ? data kept for 40 years ? noise filter built in scl / sda terminal ? shipment data all address ffh
2/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet absolute maximum rating (ta=25 ) parameter symbol limits unit impressed voltage v cc -0.3 +6.5 v permissible dissipation pd 300 *1 mw storage temperature range ts t g 65 +150 ction temperature range topr 40 +85 terminal voltage \ 0.3 vcc+1.0 *2 v junction temperature *3 tjmax 150 memory cell characteristics (ta=25 , vcc=1.7 5.5v) limits parameter min. typ. max unit write/erase cycle *1 1,000,000 cycles data retention *1 40 years recommended operating condition parameter symbol limits unit power source voltage vcc 1.7 5.5 input voltage v in 0vcc v dc operating characteristics ( unless otherwise specified, ta= 40+85 vcc=1.7 5.5v ) specification parameter symbol min. typ. max. unit test condition ?h?input voltage1 v ih1 0.7vcc vcc+1.0 v ?l?input voltage1 v il1 0.3 *1 0.3vcc v ?l?output voltage1 v ol1 0.4 v i ol =3.0ma, 2.5v Q vcc Q 5.5v (sda1,sda2) ?l?output voltage2 v ol2 0.2 v i ol =0.7ma, 1.7v Q vcc 2.5v (sda1,sda2) input leak current i li 1 1 a v in =0 vcc output leak current i lo 1 1 a v out =0 vcc (sda1,sda2) i ccw1 2.0 vcc1=5.5v,f scl =400khz, t wr =5ms, bytewrite pagewrite i ccw2 2.0 ma vcc2=5.5v,f scl =400khz, t wr =5ms, bytewrite pagewrite i ccr1 0.5 vcc1=5.5v,f scl =400khz random read, current read, sequential read operating current i ccr2 0.5 ma vcc2=5.5v,f scl =400khz random read, current read, sequential read i sb1 2.0 vcc1=5.5v, sda1 ? scl1=vcc standby current i sb2 2.0 a vcc2=5.5v, sda2 ? scl2=vcc wp2=gnd this product is not designed for protection against radio active rays. *1 when the pulse width is 50ns or less, it is -0.8v. *1 when using at ta=25 or higher, 3.0mw to be reduced per 1 . *2 the max value of terminal voltage is not over 6.5v. when the pulse width is 50ns or less, the min value of terminal voltage is not under -0.8v. *3 junction temperature at the storage condition. * 1 not 100% tested
3/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet ac operating characteristic (unless otherwise specified, ta= 40+85 , vcc=1.7 5.5v) limit parameter symbol min. typ. max. unit scl frequency fscl 400 khz data clock ?high? time thigh 0.6 s data clock ?low? time tlow 1.2 s sda, scl rise time *1*2 tr 1.0 s sda, scl fall time *1*2 tf 1.0 s start condition hold time thd:sta 0.6 s start condition setup time tsu:sta 0.6 s input data hold time thd:dat 0 ns input data setup time tsu:dat 100 ns output data delay time tpd 0.1 0.9 s output data hold time tdh 0.1 s stop condition setup time tsu:sto 0.6 s bus release time before transfer start tbuf 1.2 s internal write cycle time twr 5 ms noise removal valid period (sda, scl terminal) ti 0.1 s wp hold time thd:wp 1.0 s wp setup time tsu:wp 0.1 s wp valid time thigh:wp 1.0 s *1 not 100% tested. *2 it is recommended that tr/tf is less than 300ns fundamentally. when tr/tf is more than 300ns and less than 1us, it is possible that other device on the same bus are entered unintended start/stop condition. for prevent it, note in designing the ac timing. condition input data level:vil=0.2vcc vih=0.8vcc input data timing refarence level: 0.3vcc/0.7vcc output data timing refarence level: 0.3vcc/0.7vcc rise/fall time : Q 20ns 70% 70% tsu:sta thd:sta start condition tsu:sto stop condition 30% 30% 70% 70% data(1) d0 d1 ack data(n) ack thigh:wp 70% 70% twr 70% d0 ack twr write data (n-th address) start condition stop condition 70% 70% scl sda (input) sda (output) tr tf thigh tsu:dat tlow thd:dat tdh tpd tbuf 70% 70% 30% 70% 70% 30% 30% 70% 70% 30% 70% 70% 70% 70% 30% 30% 30% input read at the rise edge of scl data output in sync with the fall of scl fig.1-(a) sync data input / output timing fig.1-(b) start-stop bit timing fig.1-(c) write cycle timing fig.2 wp timing at write execution fig.3 wp timing at write cancel data(1) d0 ack d1 data(n) ack twr 30% 70% stop condition thd:wp tsu:wp 30% 70% sync data input / output timing
4/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet block diagram pin assignment and description pin no. pin name input/output function 1 vcc1 connect the power source 2 gnd reference voltage of all input/output,0v 3 scl1 input serial clock input for port1 4 sda1 input/output serial data input /serial data output for port1 eeprom 5 sda2 input/output serial data input /serial data output for port2 eeprom 6 scl2 input serial clock input for port2 eeprom 7 wp2 input write protect terminal for port2 eeprom 8 vcc2 connect the power source operating condition of port1 and port2 eeprom : operating possible : operating impossible vcc1 vcc2 port1 port2 0v 0v 0v vcc 0v open vcc 0v vcc vcc vcc open open 0v open vcc open open 4 3 2 1 sda1 scl1 gnd vcc1 data register word a ddress re g ister a ddress control logic vcc level detec t high voltage gen. 2kbit eeprom array 8 7 6 5 sda2 scl2 wp2 vcc2 a ddress decorder word a ddress re g iste r data register control logic 2kbit eeprom array decorder high voltage gen. vcc level detec t stop start start stop 8bit 8bit 8bit 8bit fig.4 block diagram port1 eeprom port2 eeprom
5/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet characteristic data (the following values are typ. ones.) 0 1 2 3 4 5 6 0123456 supply voltage : vcc(v) h input voltage : v ih1 (v) 0 0.2 0.4 0.6 0.8 1 0123456 l output current : i ol (ma) l output voltage : v ol1 (v) 0 0.2 0.4 0.6 0.8 1 0123456 l output current : i ol (ma) l output voltage : v ol2 (v) 0 1 2 3 4 5 6 0123456 supply voltage : vcc(v) l input voltage : vil1(v) fig.8 'l' output voltage v ol2 -i ol (vcc=2.5v) fig.6 'l' input voltage v il1 (scl1,scl2,sda1,sda2,wp2) fig.5 'h' input voltage v ih1 (scl1,scl2,sda1,sda2,wp2) ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 spec spe c spe c spec fig.7 'l' output voltage v ol1 -i ol (vcc=1.7v) spec spec
6/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet characteristic data (the following values are typ. ones.) 0 0.5 1 1.5 2 2.5 0123456 supply voltage : vcc(v) current consumption at writing : icc1(ma) 0 0.1 0.2 0.3 0.4 0.5 0.6 0123456 supply voltage : vcc(v) current consumption at reading : icc2(ma) 0 0.2 0.4 0.6 0.8 1 1.2 0123456 supplyvoltage : vcc(v) input leak current : i li (ua) 0 0.2 0.4 0.6 0.8 1 1.2 0123456 supply voltage : vcc(v) output leak current : i lo (ua) fig.9 input leak current i li (scl1,scl2,sda1,sda2,wp2) fig.10 output leak current i lo ( sda1,sda2 ) fig.11 current consumption at write operation i cc 1 (fscl=400khz ) fig.12 current consumption at read operation i cc 2 (fscl=400khz br24t01/02/04/08/16/32/64/128/256-w) ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 spec spec spec spec (fscl=400khz)
7/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet characteristic data (the following values are typ. ones.) 0 0.5 1 1.5 2 2.5 0123456 supply voltage : vcc(v) stanby current : i sb (ua) 0.1 1 10 100 1000 10000 0123456 supply voltage : vcc(v) scl frequency : f?h z 0 0.2 0.4 0.6 0.8 1 0123456 supply voltage : vcc(v) data clk h time : t high (us) fig.13 stanby operation i sb fig.15 data clock high period t high 0 0.3 0.6 0.9 1.2 1.5 0123456 supply voltage : vccv clk l time : t low (us) fig.16 data clock low period t low fig.14 scl frequency f scl ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 spec spec spec spec
8/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet characteristic data (the following values are typ. ones.) -200 -150 -100 -50 0 50 0123456 supply voltage : vcc(v) input data hold time : t hd: sta (ns) spec -200 -150 -100 -50 0 50 0123456 supply voltage : vcc(v) input data hold time : t hd :dat (ns) 0 0.2 0.4 0.6 0.8 1 0123456 supply voltage : vcc(v) start condition hold time : t hd : sta (us) -0.1 0.1 0.3 0.5 0.7 0.9 1.1 0123456 supply voltage : vcc(v) start condition set up time : tsu:sta(us) fig.17 start condition hold time t hd : sta fig.18 start condition setup time t su : sta fig.19 input data hold time t hd : dat high fig.20 input data hold time hd : dat (low ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 spec spec spec
9/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet characteristic data (the following values are typ. ones.) 0.0 0.5 1.0 1.5 2.0 0123456 supply voltage : vcc(v) output data delay time : t pd (us) -200 -100 0 100 200 300 0123456 supply voltage : vcc(v) input data set up time : t su: dat (ns) -200 -100 0 100 200 300 0123456 supply voltage : vcc(v) input data set up time : t su : dat (ns) 0.0 0.5 1.0 1.5 2.0 0123456 supply voltage : vcc(v) output data delay time : t pd (us) fig.21 input data setup time su: dat (high) fig.22 input data setup time t su : dat (low) fig..23 'l' data output delay time t pd 0 fig.24 'h' data output delay time pd 1 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 spec spec spe c spec spec spe ta=-40 ta=25 ta=85 spec spec
10/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet characteristic data (the following values are typ. ones.) -0.5 0.0 0.5 1.0 1.5 2.0 0123456 supply voltage : vcc(v) stop condition setup time : t su :sto(us) 0 0.5 1 1.5 2 0123456 supply voltage : vcc(v) bus open time before transmission : t buf (us) 0 1 2 3 4 5 6 0123456 supply voltage : vcc(v) internal writing cycle time : t wr (ms) spec fig.26 bus open time before transmission buf fig.27 internal writing cycle time wr 0 0.1 0.2 0.3 0.4 0.5 0.6 0123456 supply voltage : vcc(v) noise reduction efective time : t l (scl h) (us) fig.28 noise reduction efection time t l scl h ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 spec spec fig.25 stop condition setup time su :sto ta=-40 ta=25 ta=85 spec
11/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet characteristic data (the following values are typ. ones.) 0 0.1 0.2 0.3 0.4 0.5 0.6 0123456 supply voltage : vcc(v) noise reduction effective time : t l (sad l)(us) 0 0.1 0.2 0.3 0.4 0.5 0.6 0123456 supply volatge : vcc(v) noise reduction efective time : t l (sda h)(us) 0 0.1 0.2 0.3 0.4 0.5 0.6 0123456 supply voltage : vcc(v) noise reduction efective time : t l (scl l)(us) fig.29 noise reduction efective time t l scl l fig.30 noise resuction efecctive time sda h fig.31 noise reduction efective time t l sda l ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 ta=-40 ta=25 ta=85 spec spec spec 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0123456 supplyvoltage : vcc(v) wp data hold time : t hd : wp (us) fig.32 wp data hold time thd:wp ta=-40 ta=25 ta=85 spec
12/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet characteristic data (the following values are typ. ones.) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0123456 supplyvoltage : vcc(v) wp effective time : t high : wp (us) -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0123456 supply voltage : vcc(v) wp set up time : t su : wp (us) fig.33 wp setup time t su : wp fig.34 wp efective time t high : wp ta=-40 ta=25 ta=85 spec ta=-40 ta=25 ta=85 spec
13/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet i 2 c bus communication i 2 c bus data communication i 2 c bus data communication starts by start condition input, and en ds by stop condition input. data is always 8bit long, and acknowledge is always required after each byte. i 2 c bus carries out data transmission with plural devices connected by 2 communication lines of serial data (sda) and serial clock (scl). among devices, there are ?master? that generates clock and control communication start and end, and ?slave? that is controlled by address peculiar to devices. eeprom becomes ?slave?. and the device that out puts data to bus during data communication is called ?transmitter?, and the device that receives data is called ?receiver?. start condition (start bit recognition) ? before executing each command, start condition (start bit) where sda goes from 'high' down to 'low' when scl is 'high' is necessary. ? this ic always detects whether sda and scl are in start conditi on (start bit) or not, therefor e, unless this confdition is satisfied, any command is executed. stop condition (stop bit recongnition) ? each command can be ended by sda rising from 'low' to 'high' when stop condition (stop bit), namely, scl is 'high' acknowledge (ack) signal ? this acknowledge (ack) signal is a software rule to show whether data transfer has been made normally or not. in master and slave, the device ( -com at slave address input of write command, read command, and this ic at data output of read command) at the transmitter (sending) side releases the bus after output of 8bit data. ? the device (this ic at slave address in put of write command, read command, and -com at data output of read command) at the receiver (receiving) side sets sda 'low ' during 9 clock cycles, and outputs acknowledge signal (ack signal) showing that it has received the 8bit data. ? this ic, after recognizing start condition and slave address (8bit), outputs acknowledge signal (ack signal) 'low'. ? each write action outputs acknowledge signal (ack signal) 'low', at receiving 8bit data (word address and write data). ? each read action outputs 8bit data (read data), and detects acknowledge signal (ack signal) 'low'. when acknowledge signal (ack signal) is detected, and stop c ondition is not sent from the master ( -com) side, this ic continues data output. when acknowledge signal (ack signal) is not detected, this ic stops data transfer, and recognizes stop cindition (stop bit), and ends read action. and this ic gets in status. 89 89 89 s p condition condition ack stop ack data data addres s start r/w ack 1-7 sda scl 1-7 1-7 fig.35 data transfer timing
14/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet write command write cycle ? arbitrary data is written to eeprom. when to write only 1 byte, byte write is normally used, and when to write continuous data of 2 bytes or more, simultaneous write is possible by page write cy cle. the maximum number of write bytes is up to 8. ? during internal write execution, all input commands are ignored, therefore ack is not sent back. ? data is written to the address designated by word address (n-th address) ? by issuing stop bit after 8bit data input, write to memory cell inside starts. ? when internal write is started, command is not accepted for twr (5ms at maximum). ? by page write cycle, the following can be written in bulk : and when data of the maximum bytes or higher is sent, data from the first byte is overwritten. ? as for page write cycle , after the signific ant 5 bits of word address are designated arbitrarily, by continuing data input of 2 bytes or more, the address of insignificant 3 bits is in cremented internally, and data up to 8 bytes can be written. write protect (wp2) terminal ? write protect (wp2) function when wp2 terminal is set vcc (h level), data rewrit e of all addresses is prohibited (only port2 eeprom). when it is set gnd (l level), data rewrite of all address is enabled. be sure to connect this terminal to vcc or gnd, or control it to h level or l level. do not use it open. in the case of use it as an rom, it is recommended to connect it to pull up or vcc. at extremely low voltage at power on / off, by setting the wp terminal 'h', mistake write can be prevented. data(n) sda line data(n+15) slave address 1 0 0 1 * * * wa 7 d0 d7 d0 w r i t e s t a r t word address(n) r / w a c k wa 0 s t o p a c k a c k a c k *don?t care fig.39 page write cycle (port2 eeprom) 0 0 wa 7 d7 1 1 0 0 w r i t e s t a r t r / w s t o p word address data slave address 0 wa 0 d0 a c k sda line a c k a c k data(n) sda line data(n+15) slave address 1 0 0 1 0 0 0 wa 7 d0 d7 d0 w r i t e s t a r t word address(n) r / w a c k wa 0 s t o p a c k a c k a c k *don?t care fig.38 page write cycle (port1 eeprom) fig.36 byte write cycle (port1 eeprom) fig.37 byte write cycle (port2 eeprom) wa 7 d7 1 1 0 0 w r i t e s t a r t r / w s t o p word address data slave address wa 0 d0 a c k sda line a c k a c k * don?t care
15/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet read command read cycle data of eeprom is read. in read cycle, t here are random read cycle and current read cycle. random read cycle is a command to read data by designating address, and is used generally. current read cycle is a command to read data of internal addre ss register without designating address, and is used when to veri fy just after write cycle. in both the read cycles, sequential read cycle is available, and the next address data can be read in succession. ? in random read cycle, data of designated word address can be read. ? when the command just before current read cycle is random read cycle, current read cycle (each including sequential read cycle) , data of incremented last read address (n)-th address, i.e., data of the (n+1)-th address is output. ? when ack signal 'low' after d0 is detected, and stop condition is not sent from master ( -com) side, the next address data can be read in succession. ? read cycle is ended by stop condition where 'h' is input to ack si gnal after d0 and sda signal is started at scl signal 'h' . ? when 'h' is not input to ack signal after d0, sequential read gets in, and the next data is output. therefore, read command cycle cannot be ended. when to end read co mmand cycle, be sure input stop condition to input 'h' to ack signal after d0, and to start sda at scl signal 'h'. ? sequential read is ended by stop condition where 'h' is input to ac k signal after arbitrary d0 and sda is started at scl signal 'h'. w r i t e s t a r t r / w a c k s t o p word address(n) sda line a c k a c k data(n) a c k slave address 10 0 1 0 0 0 wa 7 0 d0 slave address 10 0 10 0 s t a r t d7 r / w r e a d wa 0 w r i t e s t a r t r / w a c k s t o p word address(n) sda line a c k a c k data(n) a c k slave address 10 0 1 wa 7 d0 slave address 10 0 1 s t a r t d7 r / w r e a d wa 0 s t a r t s t o p sda line a c k data(n) a c k slave address 10 0 1 d0 d7 r / w r e a d s t a r t s t o p sda line a c k data(n) a c k slave address 10 0 1 0 0 0 d0 d7 r / w r e a d r e a d s t a r t r / w a c k s t o p data(n) sda line a c k a c k data(n+x) a c k slave address 10 0 1 d0 d7 d0 d7 r e a d s t a r t r / w a c k s t o p data(n) sda line a c k a c k data(n+x) a c k slave address 10 0 1 0 0 0 d0 d7 d0 d7 fig.45 sequential read cycle (port2 eeprom) fig.44 sequential read cycle (port1 eeprom) fig.42 current read cycle (port1 eeprom) fig.41 random read cycle (port2 eeprom) fig.40 random read cycle (port1 eeprom) fig.43 current read cycle (port2 eeprom) *don?t care *don?t care *don?t care it is necessary to input 'h' to the last ack. it is necessary to input 'h' to the last ack. it is necessary to input 'h' to the last ack.
16/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet software reset software reset is executed when to avoid malfunction after power on, and to reset during command input. software reset has seve ral kinds, and 3 kinds of them are shown in the figure below. (refer to fi g.46, fig.47, fig.48.) in dummy clock input area, release the s da bus ('h' by pull up). in dummy clock area, ack output and read data '0' (bot h 'l' level) may be output from eeprom, therefore, if 'h' is input forcibly, output may conflict and over current may flow, leading to instantaneous power failure of system power source or influence upon devices. acknowledge polling during internal write execution, all input commands are ignored, therefore ack is not sent back. during internal automatic writ e execution after write cycle input, next command (slave address) is sent, and if the first ack signal sends back 'l', then it means end of write action, while if it sends back 'h', it means now in writing. by us e of acknowledge polling, next command can be executed without waitin g for twr = 5ms. when to write continuously, r/w = 0, when to carry out current read cycle after write, slave address r/w = 1 is sent, and if a ck signal sends back 'l', then execute word address input and data output and so forth. 1 2 13 14 scl dummy clock14 start2 scl fig.46 the case of dummy clock +start+start+ command input start command from start input. 2 1 8 9 dummy clock 9 start fig.47 the case of start +9 dummy clocks +start+ command input start normal command normal command normal command normal command start 9 sda sda scl sd 1 2 3 8 9 7 fig.48 start9+ command input normal command normal command sda slave address word address s t a r t first write command a c k h a c k l slave address slave address slave address data write command during internal write, ack = high is sent back. after completion of internal write, ack=low is sent back, so input next word address and data in succession. twr twr second write command s t a r t s t a r t s t a r t s t a r t s t o p s t o p a c k h a c k h a c k l a c k l fig.49 case to continuously write by acknowledge polling
17/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet wp valid timing (write cancel) wp2 is usually fixed to 'h' or 'l', but when wp is used to canc el write cycle and so forth, pay attention to the following wp v alid timing. during write cycle execution, in cancel va lid area, by setting wp2='h', write cycle c an be cancelled. in both byte write cycle and page write cycle, the area from the first start condition of command to the ri se of clock to taken in d0 of data(in page write cycle, the first byte data) is cancel invalid area. wp input in this area becomes don't care. the area from the rise of scl to take in d0 to input the stop condition is cancel val id area. and, after execution of forced end by wp, standby status gets in. command cancel by start condition and stop condition during command input, by continuously inputting start condi tion and stop condition, command c an be cancelled. (fig.51) however, in ack output area and during data read, sda bus may output 'l', and in this case, start condition and stop condition cannot be input, so reset is not available. therefore, execute software reset. and when command is cancelled by start, stop condition, du ring random read cycle, sequential read cycle, or current read cycle, inter nal setting address is not determined, therefore, it is not poss ible to carry out current read cycle in succession. when to carry out r ead cycle in succession, carry out random read cycle. ? rise of d0 taken clock scl d0 ack enlarged view scl sda ack d0 ? rise of sda sda wp2 wp cancel invalid area wp cancel valid area data is not written. fig.50 wp valid timing slave address d7 d6 d5 d4 d3 d2 d1 d0 data twr sda d1 s t a r t a c k l a c k l a c k l a c k l s t o p word address fig.51 case of cancel by start, stop condition during slave address input scl sda 1 1 0 0 start condition stop condition enlarged view wp cancel invalid area
18/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet i/o peripheral circuit pull up resistance of sda terminal sda is nmos open drain, so requires pull up re sistance. as for this resistance value (r pu ), select an appropriate value to this resistance value from microcontroller v il , i l , and v ol -i ol characteristics of this ic. if r pu is large, action frequency is limited. the smaller the r pu , the larger the consumption current at action. maximum value of r pu the maximum value of r pu is determined by the following factors. sda rise time to be determined by the capacitance (cbus) of bus line of r pu and sda should be tr or below. and ac timing should be satisfied even when sda rise time is late. the bus electric potential a to be determined by input leak total (i l ) of device connected to bus at output of 'h' to sda bus and r pu should sufficiently secure the input 'h' level (v ih ) of microcontroller and eeprom including recommended noise margin 0.2vcc. v cc i l r pu 0.2 v cc >a v ih r pu > 0.8v cc b v ih i l ex.) v cc =3v i l =10 a v ih =0.7 v cc from 300 c k 0.83 b 0.73 1010 -6 minimum value of r pu the minimum value of r pu is determined by the following factors. when ic outputs low, it should be satisfied that v olmax =0.4v and i olmax =3ma. v olmax = should secure the input 'l' level (v il ) of microcontroller and eeprom including recommended noise margin 0.1vcc. v olmax Q v il 0.1 v cc ex.) v cc =3v v ol =0.4v i ol =3ma microcontroller, eeprom v il =0.3vcc and v ol =0.4 v v il =0.3 3 =0.9 v therefore, the condition is satisfied. pull up resistance of scl terminal when scl control is made at cmos output port, there is no need, but in the case there is timing where scl becomes 'hi-z', add a pull up resistance. as for the pull up resistance, one of several k ~ several ten k is recommended in consideration of drive performance of output port of microcontroller. i ol r pu >a v cc b v ol i ol > v cc b v o l r pu > >a 867 ca 3 b 0.4 310 :?:? from microcontroller r pu a sda terminal i l i l bus line capacity cbus fig.52 i/o circuit diagram BU99022NUX-3
19/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet cautions on microcontroller connection r s in i 2 c bus, it is recommended that sda port is of open drain input/outpu t. however, when to use cmos input / output of tri state to sda port, insert a series resistance rs between the pull up resistance r pu and the sda terminal of eeprom. this is controls over cu rrent that occurs when pmos of the microcontroller and nmos of e eprom are turned on simultaneously. rs also plays the role of protection of sda terminal against surge. therefore, even when sda port is open drain input/out put, rs can be used. maximum value of rs the maximum value of rs is det ermined by the following relations. sda rise time to be determined by the capacity (cbu s) of bus line of rpu and sda should be tr or below. and ac timing should be satisfied ev en when sda rise time is late. the bus electric potential a to be determined by rpu and rs the moment when eeprom outputs 'l' to sda bus sufficiently secure the input 'l' level (v il ) of microcontroller including recommended noise margin 0.1vcc. minimum value of rs the minimum value of rs is deter mined by over current at bus collision. when over current flows, noises in power source line, a nd instantaneous power failure of power source may occur. when allo wable over current is defined as i, the following relation must be satisfied. determine the allowable current in consideration of impedance of power source line in set and so forth. set the over current to eeprom 10ma or below. r pu microcontroller r s eeprom fig.53-(a) i/o circuit di agram fig.53-(b) input / output collision timing ack 'l' output of eeprom 'h' output of microcontroller over current flows to sda line by 'h' output of microcontroller and 'l' output of eeprom. scl sda microcontroller eeprom 'l'output r s r pu 'h' output over current i fig.54-(b) i/o ci rcuit diagram Q 1.67 k ? Q 0.33 0.4 0.13 2010 3 1.13 0.33 r s r pu 1.1v cc -v il ex. v cc =3v v il =0.3v cc v ol =0.4v r pu =20k r s Q v il v ol 0.1v cc (v cc v ol )r s +v ol +0.1v cc Q v il r pu +r s v cc r s v cc i R 300 ?? ex.) vcc=3v, i=10ma r s R 3 1010 -3 Q i r s R r pu micro controller r s eeprom i ol a bus line capacity cbus v ol v cc v il fig.54-(a) i/o circuit diagram
20/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet i 2 c bus input / output circuit input (scl1,scl2,wp2) input / output (sda1,sda2) fig.55-(a) input pin circuit diagram fig.55-(b) input / output pin circuit diagram
21/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ?14 ? 001 BU99022NUX-3 datasheet notes on power on at power on, in ic internal circuit and set, vcc rises through unstable low voltage area, and ic inside is not completely reset , and malfunction may occur. to prevent this, functions of por circ uit and lvcc circuit are equipped. to assure the action, observe t he following conditions at power on. 1. set sda = 'h' and scl ='l' or 'h? 2. start power source so as to satisfy the recommended conditions of t r , t off , and vbot for operating por circuit. 3. set sda and scl so as not to become 'hi-z'. when the above conditions 1 and 2 cannot be obser ved, take the following countermeasures. a) in the case when the above condition 1 cannot be observed. when sda becomes 'l' at power on . control scl and sda as shown below, to make scl and sda, 'h' and 'h'. ) in the case when the above condition 2 cannot be observed. after power source becomes stable, execute software reset(p15). ) in the case when the above conditions 1 and 2 cannot be observed. carry out a), and then carry out b). low voltage malfunction prevention function lvcc circuit prevents data rewrite action at low power, and prevents wrong write. at lvcc voltage (typ. =1.2v) or below, it prevent data rewrite. vcc noise countermeasures bypass capacitor when noise or surge gets in the power source line, malfunction may occur, therefore, for removing these, it is recommended to a ttach a by pass capacitor (0.1 f) between ic vcc 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 vcc and gnd. cautions on use (1) described numeric values and data are design represent ative values, and the values are not guaranteed. (2) we believe that application circuit examples are recommendable , however, in actual use, conf irm characteristics further suf ficiently. in the case of use by changing the fixed number of external parts, make your decision with sufficient margin in consideration of stati c characteristics and transition characteristics and fluctuations of external parts and our lsi. (3) absolute maximum ratings if the absolute maximum ratings such as impressed voltage and ac tion temperature range and so forth are exceeded, lsi may be destructed. do not impress voltage and temperature exceeding the absolute maximum ratings. in the case of fear exceeding the ab solute maximum ratings, take physical safety countermeasures such as fuses, and see to it that conditions exceeding the absolute maxim um ratings should not be impressed to lsi. (4) gnd electric potential set the voltage of gnd terminal lowest at any action condition. ma ke sure that each terminal voltage is lower than that of gnd terminal. (5) terminal design in consideration of permissible loss in actual use c ondition, carry out heat design with sufficient margin. (6) terminal to terminal shortcircuit and wrong packaging when to package lsi onto a board, pay sufficient attention to lsi direction and displacement. wrong packaging may destruct lsi. and in the case of shortcircuit between lsi terminals and terminals and power source, terminal and gnd owing to foreign matter, lsi ma y be destructed. (7) use in a strong electromagnetic field may cause ma lfunction, therefore, eval uate design sufficiently. fig.56 rise waveform diagram tlow tsu:dat tdh after vcc becomes stable scl v cc sda fi g .57 :?:?:?:?:w:a:?::?:w:~:?:~:w:?:?:?:w:a:?:?:?:w:~::~ :w tsu:dat after vcc becomes stable fi g .58 :?:?:?:?:w:a:?::?:~::~:w:?:?:?:w:a:?:?:?:~::~ :?:?:o:?:?:?:?:?:?:?:?:w:o:?:?:?::?::?:?::w:?:?:w:?:?:?:w:?:|:?:?:?:-:1:?:? tr toff vbot 10ms or belo w 10ms or larger 0.3v or below 100 or below 10ms or larger 0.2v or below :w toff tr vbot 0 v cc
22/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ? 14 ? 001 BU99022NUX-3 datasheet revision history date revision changes 19-dec-2011 001 initial document release
23/23 www.rohm.com tsz02201-0r2r0g100010-1-2 2011.12.19 rev.001 ? 2011 rohm co., ltd. all rights reserved. tsz22111 ? 14 ? 001 BU99022NUX-3 datasheet ordering information physical dimantion. tape abd reel information marking diagram b u 9 9 0 2 2 n u x - 3 package nux : vson008x2030 ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity 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 4000pcs tr () direction of feed reel 1pin (unit : mm) vson008x2030 5 1 8 4 1.40.1 0.25 1.50.1 0.5 0.30.1 0.25 +0.05 ?0.04 c0.25 0.6max (0.12) 0.02 +0.03 ?0.02 3.00.1 2.00.1 1pin mark 0.08 s s tr packaging and forming specification tr : embossed tape and reel 0.6max 3.00.1 2.00.1 1pin mark 0.30.1 c0.25 1.50.1 0.5 0.25 0.25 -0.04 +0.05 0.02 +0.03 -0.02 (0.12) drawingno. : ex187-6001 (unit:mm) product name: bu99022-3 022 lot no 1.40.1 BU99022NUX-3
datasheet d a t a s h e e t notice - ge rev.002 ? 2014 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. our products are designed and manufac tured for application in ordinary elec tronic equipments (such as av equipment, oa equipment, telecommunication equipment, home electroni c appliances, amusement equipment, etc.). if you intend to use our products in devices requiring ex tremely high reliability (such as medical equipment (note 1) , transport equipment, traffic equipment, aircraft/spacecra ft, nuclear power controllers, fuel c ontrollers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (?specific applications?), please consult with the rohm sale s representative in advance. unless otherwise agreed in writing by rohm in advance, ro hm 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 any ro hm?s 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 designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditio ns, as exemplified below. accordin gly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of an y rohm?s products under any special or extraordinary environments or conditions. if you intend to use our products under any special or extraordinary environments or conditions (as exemplified bel ow), 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 descr ibed 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
datasheet d a t a s h e e t notice - ge 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 c onsidering 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 hum idity 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 rohm?s 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 contain ed 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.
datasheet datasheet notice ? 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.

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