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| 1/18 www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. high reliability seri es serial eeproms wl-csp eeprom family i 2 c bus BU9844GUL-W description BU9844GUL-W series is a serial eeprom of i 2 c bus interface method. 1.7v single power source action and actions available at 400khz. features 1) completely conforming to the world standard i 2 c bus. all controls available by 2 ports of serial clock (scl) and serial data(sda) 2) other devices than eeprom can be connected to the same port, saving microcontroller port. 3) actions available at 400khz clock (1.7v 5.5v) 4) 1.7 5.5v single power source action most suitable for battery use. 5) page write mode useful for initial value write at factory shipment. 6) auto erase and auto end function at data rewrite. 7) low current consumption at write action (5v) : 1.2ma (typ.) at read action (5v) : 0.2ma (typ.) at standby action (5v) : 0.1 a (typ.) 8) write mistake prevention function write (write protect) function added. write mistake prevention function at low voltage. 9) data rewrite up to 1,000,000times. 10) data kept for 40 years. 11) noise filter built in scl / sda terminal 12) shipment data all address ffh. page write product number number of pages BU9844GUL-W 16byte BU9844GUL-W type capacity bit format power source voltage package BU9844GUL-W 16kbit 20488 1.7~5.5v vcsp50l1 absolute maximum ratings (ta=25 ) parameter symbol ratings unit impressed voltage vcc -0.3~+6.5 v permissible dissipation pd 220 *1 mw storage temperature range tstg -65~125 operating temperature range topr -40~85 terminal voltage - -0.3~vcc+1.0 v * when using at ta=25 or higher, 2.2mw (*1) to be reduced per 1 recommended action conditions parameter symbol ratings unit power source voltage vcc 1.7~5.5 v input voltage vin 0~vcc no.10001eat18
technical note 2/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. QQ QQ Q Q QQ Q technical note 3/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. QQ QQ technical note 4/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. . 0 1 2 3 4 5 6 0123456 vcc[v] vil1,2,3[v] spec 0 1 2 3 4 5 6 0123456 vcc[v] vih1,2,3[v] spec 0 0.2 0.4 0.6 0.8 1 0123456 iol2[ma] vol2[v] spec c b a 12 technical note 5/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. 0 0.2 0.4 0.6 0.8 1 0123456 iol1[ma] vol1[v] 0 0.2 0.4 0.6 0.8 1 1.2 0123456 vcc[v] ili[a] 0 0.2 0.4 0.6 0.8 1 1.2 0123456 vcc[v] ilo[a] 0 0.5 1 1.5 2 2.5 0123456 vcc[v] icc1[ma] fscl=400khz data=aah 0 0.5 1 1.5 2 2.5 0123456 vcc[v] isb[a] 0 0.1 0.2 0.3 0.4 0.5 0.6 0123456 vcc[v] icc2[ma] fscl=400khz data=aah 1 10 100 1000 10000 0123456 vcc[v] fscl[khz] 0 0.2 0.4 0.6 0.8 1 0123456 vcc[v] thigh [s] 0 0.4 0.8 1.2 1.6 0123456 vcc[v] tlow[s] 0 0.2 0.4 0.6 0.8 1 0123456 vcc[v] thd:sta[s] -200 -150 -100 -50 0 50 0123456 vcc[v] thd:dat(high)[ns] -0.2 0 0.2 0.4 0.6 0.8 1 0123456 vcc[v] thd:dat(high)[ns] -200 -100 0 100 200 0123456 vcc[v] tsu:dat(high)[ns] 0 0.2 0.4 0.6 0.8 1 0123456 vcc[v] tpd0 [s] 0 0.2 0.4 0.6 0.8 1 0123456 vcc[v] tpd1 [s] technical note 6/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. 0 0.1 0.2 0.3 0.4 0.5 0.6 0123456 vcc[v] ti(sda h) [s] 0 0.2 0.4 0.6 0.8 1 0123456 vcc[v] tdh0[s] 0 1 2 3 4 5 6 0123456 vcc[v] twr[ms] 0 0.1 0.2 0.3 0.4 0.5 0.6 0123456 vcc[v] ti(scl h) [s] -0.6 -0.4 -0.2 0 0.2 0123456 vcc[v] tsu:wp[s] 0 1 2 3 4 0123456 vcc[v] tdh1[s] 0 1 2 3 4 5 0123456 vcc[v] tbuf[s] 0 1 2 3 4 5 0123456 vcc[v] tsu:sto[s] 0 0.1 0.2 0.3 0.4 0.5 0.6 0123456 vcc[v] ti(scl l) [s] 0 0.1 0.2 0.3 0.4 0.5 0.6 0123456 vcc[v] ti(sda l) [s] 0 0.2 0.4 0.6 0.8 1 1.2 0123456 vcc[v] thigh:wp[s] technical note 7/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. ? ? ? ? ? ? ? ? ? ? ? ? ? 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 technical note 8/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. ? ? ? ? ? ? technical note 9/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. ? technical note 10/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. ? ? ? ? ? ? technical note 11/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. technical note 12/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. technical note 13/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. Q Q Q ? Q R R R ? ? ? ? ? technical note 14/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. Q Q ? Q Q ? Q R R R? technical note 15/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. technical note 16/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. technical note 17/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. technical note 18/18 BU9844GUL-W www.rohm.com 2010.09 - rev. a ? 2010 rohm co., ltd. all rights reserved. ? order quantity needs to be multiple of the minimum quantity. r1010 a www.rohm.com ? 2010 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 specied herein is subject to change for improvement without notice. the content specied 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 specications, 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 specied 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 specied herein is intended only to show the typical functions of and examples of application circuits for the products. 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 specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specied 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, re or any other damage caused in the event of the failure of any product, such as derating, redunda ncy, re 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, aerospac e 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 specied 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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