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1/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. memory for plug & play edid memory (for display) br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w br24c21,br24c21f,br24c21fj,BR24C21FV description br24c21f,br24c21fj,BR24C21FV are serial eeproms that support ddc1 tm /ddc2 tm interfaces for plug and play displays. features 1) compatible with both ddc1 tm /ddc2 tm 2) operating voltage range: 2.5v to 5.5v 3) page write function: 8bytes 4) low power consumption active (at 5v) : 1.5ma (typ) stand-by (at 5v) : 0.1a (typ) 5) address auto increment function during read operation 6) data security write enable feature (vclk) write protection at low vcc 7) various packages available: dip-t8(br24c21) / so p8(br24c21f) / sop-j8(br24c 21fj) / ssop-b8(BR24C21FV) 8) initial data=ffh 9) data retention: 10years 10) rewriting possible up to 100,000 times absolute maximum ratings (ta=25 ) parameter symbol rating unit supply voltage v cc -0.3 +6.5 v power dissipation pd 800 (dip-t8) *1 mw 450 (sop8) *2 450 (sop-j8) *3 350 (ssop-b8) *4 storage temperature ts t g - 6 5 +125 operating temperature topr -40 +85 terminal voltage - -0.3 v cc +0.3 v * reduce by 8.0 mw/ ? c over 25 ? c (*1), 4.5mw/ (*2,3), and 3.5mw/ (*4) memory cell characteristics parameter symbol rating unit supply voltage v cc 2.5 5.5 v input voltage vin 0 v cc v recommended operating conditions parameter limits unit min. typ. max. write/erase cycle 100,000 - - cycle data retention 10 - - year no.11002ect02
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 2/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? R
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 3/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. . ?
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 4/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? ? ? 10 1 vpu d7 d6 d5 d4 d3 vclk scl sda vcc 00h address data 9 sda vclk null bit data=1 d0 d1 d7 d6 address n data address n+1 data tvpd tvhigh tvlow
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 5/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? bi-directional transition mode with possibility to return to transmit-only mode transmit-only transmit-only ? address 00h ? ? transmit-oonly / bi-directional transition mode with possibility to return to transmit-only mode bi-directional parmanently *
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 6/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. 0 0 data(n+7 ) *:don ? t care
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 7/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? w r i t e s t a r t r / w a c k s t o p word address? sda line a c k a c k data(n) a c k slave address 10 0 1* * * wa 6 * d0 slave address 10 0 1* * s t a r t d7 r / w r e a d wa 0 * *:don ? t care 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 *:don ? t care
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 8/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. bu9882-w,bu9882f-w,bu9882fv-w
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 9/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. R ?
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 10/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. fig.15 block diagram fig.16 pin layout DDD
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 11/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? t wr
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 12/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? D
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 13/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. r / w a c k wa 6
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 14/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved.
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 15/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. sda scl pc 0 monitor cpu
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 16/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. common application note 9
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 17/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. the capacitance of bus line (cbus) fig.32 i/o circuits R Q Q Q
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 18/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. Q R ?? R -3 Q R
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 19/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved.
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 20/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved.
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 21/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. (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. embossed carrier tape tape quantity 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 ? 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 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 0.20.1 0.45min 234 5678 1 4.90.2 0.545 3.90.2 6.00.3 (max 5.25 include burr) 0.420.1 1.27 0.175 1.3750.1 0.1 s s (unit : mm) ssop-b8 0.08 m 1234 5678 0.1 +0.06 - 0.04 0.22 0.3min 0.65 (0.52) 3.0 0.2 0.15 0.1 6.4 0.3 1.15 0.1 4.4 0.2 (max 3.35 include burr) s 0.1 ? 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 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
technical note br24c21,br24c21f,br24c21fj,BR24C21FV, bu9882-w,bu9882f-w,bu9882fv-w 22/22 www.rohm.com 2011.08 - rev.c ? 2011 rohm co., ltd. all rights reserved. b u 9 8 8 2 f v - w e 2 rohm type part no. package f : sop14 fv : ssop-b14 w: double cell packaging and forming specification e2: embossed ta p e and reel (unit : mm) sop14 7 14 1.27 0.11 1 8 0.3min 8.7 0.2 0.4 0.1 0.15 0.1 1.5 0.1 6.2 0.3 4.4 0.2 (max 9.05 include burr) 0.1 ? 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 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 ? 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 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) ssop-b14 8 7 14 1 0.10 6.4 0.3 4.4 0.2 5.0 0.2 0.22 0.1 1.15 0.1 0.65 0.15 0.1 0.3min. 0.1
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 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 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 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, redundancy, 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, 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 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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