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| 1/40 www.rohm.com 2011.09 - rev.g ? 2011 rohm co., ltd. all rights reserved. high reliability serial eeproms high reliability series eeproms microwire bus br93l -w series, br93a-wm series, br93h -wc series rohm's series of serial eeproms represent the highest level of reliability on the market. a double cell structure provides a failsafe method of data reliability, while a double reset functi on prevents data miswriting. in addition, gold pads and gold wires are used for internal connections, pushi ng the boundaries of reliability to the limit. br93l -w series are assort 1kbit 16kbit. br93a -wm series are possible to operate at 105 and are assorted with 1k 16kbit. br93h -wc series are possible to operate at 125 , are assorted with 2k 16kbit. contents br93l-w series br93l46-w, br93l56-w, br93l66- w, br93l76-w, br93l86-w br93a -wm series br93a46-wm, br93a56-wm, br93a66 -wm, br93a76-wm, br93a86-wm ???? p2 br93h -wc series br93h56-wc, br93h66-wc, br93h76-wc, br93h86-wc ???p22 no.11001egt03
technical note br93l technical note br93l \ \ Q Q Q Q technical note br93l QQ Q QQ Q QQ QQ technical note br93l QQ QQ c s sk do ( re ad ) di do ( write ) tcss tsk h t skl tcs h tdis tdih tpd1 tpd0 tdf s tat u s va l i d technical note br93l technical note br93l technical note br93l technical note br93l technical note br93l technical note br93l ? ? technical note br93l cs 1 2 1 4 high-z 1 am a1 a0 0 d15 d14 d1 d15 d14 *1 *2 d0 sk di do 0 cs 1 2 1 4 high-z 0 a m a 1 a 0 d15 d14 d1 cs 1 2 1 5 high-z 0 0 0 d15 d14 d1 technical note br93l cs 1 2 1 1 1 4 high-z cs 1 2 1 4 high-z sk di do cs 1 2 1 5 high-z 0 0 sk di do n 3 4 6 7 8 enable=1 1 disable=0 0 technical note br93l ) ) :a:?:?::?:w:1::? :|:?:?:w:o:?:?:? :?:?:?::?:: :?:?:?:? 1bit b? method to cancel :a:?:?::?:w:1::? :|:?:?:w:o:?:?:? :?:?:?::?:: :?:?:?:? :?:?:?:? a *1 ? ) :a:?:?::?:w:1::? :|:?:?:w:o:?:?:? :?:?:?::?:: :?:?:?:? :?:?:?:? a *1 technical note br93l ) :a:?:?::?:w:1::? :|:?:?:w:o:?:?:? :?:?:?::?:: :?:?:? :?:?:?:? *1 ) :a:?:?::?:w:1::? :|:?:?:w:o:?:?:? :?:?:?::?:: :?:?:?:? *1 technical note br93l R ??? R R ??? R ? ? ? technical note br93l rpu R ??? R Q ??? R , R ??? R R ??? R , ? ? ? ? ? ? technical note br93l technical note br93l ? ? ? Q Q Q R ??? R R R ??? R R R ? ??? R R R ? ??? R ? ? ? ? ? ? ? ? ? technical note br93l ? :w 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 vcc gnd vcc gnd vcc cs bad example good example fig.86 timing at power on/off fig.87 rise waveform diagram technical note br93l technical note br93l Q Q technical note br93l \ Q Q Q Q Q QQ QQ technical note br93l technical note br93l technical note br93l technical note br93l :w :?:a:w:w:w:w:w:a::w:w:w:w:?:?:w:w:w:w:w:?:|:w 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 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 bit 4,096 bit 8,192 bit 16,384 bit eeprom cs address decoder technical note br93l ? ? ? technical note br93l cs 1 2 1 4 high-z 1 am a1 a0 0 d15 d14 d1 d15 d14 *1 *2 d0 sk di do 0 d> d> :?:a:- d> d> d> d> d> d> d> d> d> d> d> d> d> d> d> d> d> d> d> d> d> d> d> d> br93h56/66-wc : n=27, m=7 br93h76/86-wc : n=29, m=9 fig. 32 write all cycle fig. 31 write cycle fig. 30 read cycle technical note br93l :a:?:?::?:w:1::? :|:?:?:w:o:?:?:? :?:?:?::?:: :?:?:?:? 1bit :a:?:?::?:w:1::? :|:?:?:w:o:?:?:? :?:?:?::?:: :?:?:?:? :?:?:?:? a *1 ? cs 1 2 1 5 high-z 0 0 sk di do n 3 4 6 7 8 enable=1 1 disable=0 0 n? :w n? :w n? :w n? :w n? :w n? :w n? :w n? :w fig. 33 write enable (wen) / disable (wds) cycle technical note br93l R ??? R R ??? R ? ? ? technical note br93l R ??? R Q ??? R , R ??? R R ??? R , ? ? ? ? ? ? ? ? ? technical note br93l technical note br93l ? ? Q Q Q R ??? ? ? ? ? technical note br93l ? R R R R ??? R R R ? ??? R R R ? ??? R ? ? ? ? ? technical note br93l ? :w 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 vcc gnd vcc gnd vcc cs bad example good example fig.52 timing at power on/off fig.53 rise waveform diagram technical note br93l technical note br93l (unit : mm) sop8 0.90.15 0.3min 4 + 6 ? 4 0.17 +0.1 - 0.05 0.595 6 43 8 2 5 1 7 5.00.2 6.20.3 4.40.2 (max 5.35 include burr) 1.27 0.11 0.420.1 1.50.1 s ? order quantity needs to be multiple of the minimum quantity. technical note br93l (unit : mm) tssop-b8 0.08 s 0.08 m 4 4 234 8765 1 1.0 0.05 1pin mark 0.525 0.245 +0.05 ?0.04 0.65 0.145 +0.05 ?0.03 0.1 0.05 1.2max 3.0 0.1 4.4 0.1 6.4 0.2 0.5 0.15 1.0 0.2 (max 3.35 include burr) s direction of feed reel ? order quantity needs to be multiple of the minimum quantity. technical note br93l (unit : mm) msop8 0.08 s s 4.00.2 8 3 2.80.1 1 6 2.90.1 0.475 4 57 (max 3.25 include burr) 2 1pin mark 0.9max 0.750.05 0.65 0.080.05 0.22 +0.05 ?0.04 0.60.2 0.290.15 0.145 +0.05 ?0.03 4 + 6 ?4 direction of feed reel ? order quantity needs to be multiple of the minimum quantity. r1120 a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specified herein is subject to change for improvement without notice. the content specified herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specifications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specified in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specified herein is intended only to show the typical functions of and examples of application circuits for the produc ts. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any product, such as derating, redundancy, fire control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specified herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law. |
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