? 2014 microchip technology inc. ds00001729a-page 1 general description the ece1105 is a 48-pin 3.3v keyboard scan expan- sion or gpio expansion device. the device supports a keyboard scan matrix of 23x8 and has two ps/2 ports for touchpad and/or pointer stick support. the device is connected to a master via the bc-link tm interface or via the smbus. ksi and kso signals are multiplexed with gpios. features up to 23x8 keyboard scan matrix two ps/2 ports - touch pad support - pointer stick support 40 multiplexed general purpose i/o pins - all are mcu addressable i/o pins bc-link interconnect bus - link to embedded controller smbus interconnect - one of two address selection 3.3v operation - 48-pin, qfn rohs compliant package - 0.5mm pitch - 7x7m body size block diagram ece1105 gpio expansion, ps/2, 23x8 keyscan matrix interface via smbus or bc-link bus downloaded from: http:///
ece1105 ds00001729a-page 2 ? 2014 microchip technology inc. to our valued customers it is our intention to provide our valued customers with the best documentation possible to ensure successful use of your micro chip products. to this end, we will continue to improve our publications to better suit your needs. our publications will be refined and enhanced as new volumes and updates are introduced. if you have any questions or comments regarding this publication, please contact the marketing communications department via e-mail at docerrors@microchip.com . we welcome your feedback. most current data sheetto obtain the most up-to-date version of this data sheet, please register at our worldwide web site at: http://www.microchip.com you can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page . the last character of the literature number is the version number, (e.g., ds30000000a is version a of document ds30000000).errata an errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for cur- rent devices. as device/documentation issues become known to us, we will publish an errata sheet. the errata will specify the revision of silicon and revision of document to which it applies. to determine if an errata sheet exists for a particular device, please check with one of the following: microchips worldwide web site; http://www.microchip.com your local microchip sales office (see last page) when contacting a sales office, please specify which device, revision of silicon and data sheet (include -literature number) yo u are using.customer notification system register on our web site at www.microchip.com to receive the most current information on all of our products. downloaded from: http:///
? 2014 microchip technology inc. ds00001729a-page 3 ece1105 package outline figure 1: package outline: 48-pin qfn, 7x7 mm body (1 of 2) note: for the most current package draings, see the microchip packaging specification at http://.microchip.com/packaging downloaded from: http:///
ece1105 ds00001729a-page 4 ? 2014 microchip technology inc. figure 2: package outline: 48-pin qfn, 7x7 mm body (2 of 2) note: for the most current package draings, see the microchip packaging specification at http://.microchip.com/packaging downloaded from: http:///
? 2014 microchip technology inc. ds00001729a-page 5 ece1105 appendix a: product brief revision history table a-1: revision history revision section/figure/entry correction ds00001729a (04-29-14) rev a replaces previous smsc version rev. 1.6 (02-21-11) downloaded from: http:///
ece1105 ds00001729a-page 6 ? 2014 microchip technology inc. the microchip web site microchip provides online support via our www site at www.microchip.com . this web site is used as a means to make files and information easily available to customers. accessible by using your favorite internet browser, the web site con- tains the following information: product support C data sheets and errata, application notes and sample programs, design resources, users guides and hardware support documents, latest software releases and archived software general technical support C frequently asked questions (faq), technical support requests, online discussion groups, microchip consultant program member listing business of microchip C product selector and ordering guides, latest microchip press releases, listing of semi- nars and events, listings of microchip sales offices, distributors and factory representatives customer change notification service microchips customer notification service helps keep customers current on microchip products. subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest. to register, access the microchip web site at www.microchip.com . under support, click on customer change notifi- cation and follow the registration instructions. customer supportusers of microchip products can receive assistance through several channels: distributor or representative local sales office field application engineer (fae) technical support customers should contact their distributor, representative or field application engineer (fae) for support. local sales offices are also available to help customers. a listing of sales offices and locations is included in the back of this docu- ment. technical support is available through the web site at: http://www.microchip.com/support downloaded from: http:///
? 2014 microchip technology inc. ds00001729a-page 7 ece1105 product identification system to order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office . p art no. (1) package device device: ece1105 (1) temperature range: blank = commercial 0c to 70c i = industrial -40c to 85c package: hzh = 48 pin qfn (2) tape and reel option: blank = tray packaging tr = tape and reel (3) examples: a) ece1105-hzh = 48-pin qfn, commercial b) ECE1105I-HZH = 48-pin qfn, industrial [x] (3) tape and reel option - note 3: tape and reel identifier only appears in the catalog part number description. this identi- fier is used for ordering purposes and is not printed on the device package. check with your microchip sales office for package availability with the tape and reel option. note 2: all package options are rohs compliant. for rohs compliance and environmental information, please visit http://www.micro- chip.com/pagehandler/en-us/aboutus/ ehs.html . note 1: these products meet the halogen maximum concentration values per iec61249-2-21. - xxx (2) [x] temperature range downloaded from: http:///
ece1105 ds00001729a-page 8 ? 2014 microchip technology inc. note the following details of the code protection feature on microchip devices: microchip products meet the specification contained in their particular microchip data sheet. microchip believes that its family of products is one of the most secure families of its kind on the market today, when used i n the intended manner and under normal conditions. there are dishonest and possibly illegal methods used to breach the code protection feature. all of these methods, to our knowledge, require using the microchip products in a manner outside the operating specifications contained in microchips data sheets. most likely, the person doing so is engaged in theft of intellectual property. microchip is willing to work with the customer who is concerned about the integrity of their code. neither microchip nor any other semiconductor manufacturer can guarantee the security of their code. code protection does not mean that we are guaranteeing the product as unbreakable. code protection is constantly evolving. we at microchip are committed to continuously improving the code protection features of our products. attempts to break microchips code protection feature may be a violation of the digital millennium copyright act. if such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that act. information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. it is your responsibility to ensure that your application meets with your specifications. microchip make s no representations or warranties of any kind whether express or implied, written or oral, statutory or otherwise, related to the information, includ ing but not limited to its condition, quality, performance, merchantability or fitness for purpose . microchip disclaims all liability arising from this information and its use. use of microchip devices in life support and/or safety applications is entirely at the buyers risk, and the buyer agrees to defend, indemnify and hold harmless microchip from any and all damages, claims, suits, or expenses resulting from such use. no licenses are conveyed, implic- itly or otherwise, under any microchip intellectual property rights. trademarks the microchip name and logo, the microchip logo, dspic, flashflex, k ee l oq , k ee l oq logo, mplab, pic, picmicro, picstart, pic 32 logo, rfpic, sst, sst logo, superflash and uni/o are registered trademarks of microchip technology incorporated in the u.s.a. a nd other countries. filterlab, hampshire, hi-tech c, linear active thermistor, mtp, seeval and the embedded control solutions company are registered trademarks of microchip technology incorporated in the u.s.a. silicon storage technology is a registered trademark of microchip technology inc. in other countries. analog-for-the-digital age, application maestro, bodycom, chipkit, chipkit logo, codeguard, dspicdem, dspicdem.net, dspicworks, dsspeak, ecan, economonitor, fansense, hi-tide, in-circuit serial programming, icsp, mindi, miwi, mpasm, mpf, mplab certified logo, mplib, mplink, mtouch, omniscient code generation, picc, picc-18, picdem, picdem.net, pickit, pictail, real ice, rflab, select mode, sqi, serial quad i/o, total endurance, tsharc, uniwindriver, wiperlock, zena and z- scale are trademarks of microchip technology incorporated in the u.s.a. and other countries. sqtp is a service mark of microchip technology incorporated in the u.s.a. gestic and ulpp are registered trademarks of microchip technology germany ii gmbh & co. kg, a subsidiary of microchip technology inc., in other countries. flexpwr, jukeblox, kleer, kleernet, medialb, and most the preceding is a non-exhaustive list of trademarks in use in the us and other countries. for a complete list of trademarks, e mail a request to legal.department@microchip.com. the absence of a trademark (name, logo, etc.) from the list does not constitute a waiver of any intellectual property rights that smsc has established in any of its trademarks. all other trademarks mentioned herein are property of their respective companies. ? 2014, microchip technology incorporated, printed in the u.s.a., all rights reserved. isbn: 9781632761651 microchip received iso/ts-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in chandler and tempe, arizona; gresham, oregon and design centers in california and india. the companys quality system processes and procedures are for its pic ? mcus and dspic ? dscs, k ee l oq ? code hopping devices, serial eeproms, microperipherals, nonvolatile memory and analog products. in addition, microchips quality system for the design and manufacture of development systems is iso 9001:2000 certified. downloaded from: http:///
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