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3 volt flashfile ? memory 28f004s3, 28F008S3, 28f016s3 specification update release date: february, 1999 order number: 297799- 009 the 28f004s3, 28F008S3, and 28f016s3 may contain design defects or errors known as errata which may cause the product to deviate from published specifications. current characterized errata are documented in this specification update.
28f004s3/28F008S3/28f016s3 specification update ii february, 1999 297799-009 information in this document is provided in connection with intel products. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. except as provided in intel's terms and conditions of sale for such products, intel assumes no liability whatsoever, and intel disclaims any express or implied warranty, relating to sale and/or use of intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. intel products are not intended for use in medical, life saving, or life sustaining applications. intel may make changes to specifications and product descriptions at any time, without notice. the 28f004s3, 28F008S3 and 28f016s3 may contain design defects or errors known as errata which may cause the product to deviate from published specifications. current characterized errata are available upon request. contact your local intel sales office or your distributor to obtain the latest specifications and before placing your product order. copies of documents which have an ordering number and are referenced in this document, or other intel literature, may be obtained from: intel corporation p.o. box 5937 denver, co 80217-9808 or call 1-800-548-4725 or visit intels website at http://www.intel.com copyright ? intel corporation 1997, 1998, 1999 cg-041493 *third-party brands and names are the property of their respective owners.
28f004s3/28F008S3/28f016s3 specification update 297799-009 february, 1999 iii contents revision history ...................................................................................................... 1 preface ....................................................................................................................... 2 summary tables of changes............................................................................... 4 identification information .................................................................................. 6 errata......................................................................................................................... .7 specification changes ........................................................................................ 13 specification clarifications ............................................................................ 13 documentation changes .................................................................................... 14

28f004s3/28F008S3/28f016s3 specification update 297799-009 february, 1999 1 of 14 revision history date of revision version description 09/10/96 -001 document includes all known errata to date (original version) 12/01/96 -002 removed ce# glitch sensitivity erratum modified ce#-high erratum added rp# control erratum 02/01/97 -003 removed ce#-high erratum 04/04/97 -004 modified block locking and unlocking erratum added psop pinout correction change specification update title added 16-mbit i ccr erratum added 12v v pp time specification change 05/06/97 -005 removed 12v v pp time specification change 06/05/97 -006 added 16-mbit block locking and unlocking erratum 08/02/97 -007 changed status of erratum #1, deep power-down current changed status of erratum #2, block locking and un-locking changed status of erratum #5, rp# control during power-up 09/10/97 -008 added specification clarification, v pp program and erase voltages on sub 0.4 m s3 memory family 02/16/99 -007 previous documentation change indicating psop pinout graphic error deleted; incorporated into 3 volt flashfile? memory; 28f004s3, 28F008S3, 28f016s3 datasheet. specification update renamed from byte-wide smart 3 flashfile? memory family specification update . reference to datasheet modified to reflect new datasheet name.
28f004s3/28F008S3/28f016s3 specification update 2 of 14 february, 1999 297799-009 preface the intel ? computing enhancement group has consolidated available historical device and documentation errata into this new document type called the specification update. we have endeavored to include all documented errata in the consolidation process, however, we make no representations or warranties concerning the completeness of the specification update. this document is an update to the specifications contained in the affected documents/related documents table below. this document is a compilation of device and documentation errata, specification clarifications and changes. it is intended for hardware system m anufacturers and software developers of applications, operating systems, or tools. information types defined in nomenclature are consolidated into the specification update and are no longer published in other documents. this document may also contain additional information that was not previously published. functional descriptions for this product are found in the 3 volt flashfile? memory; 28f004s3, 28F008S3, 28f016s3 datasheet. affected documents/related documents title order 3 volt flashfile? memory; 28f004s3, 28F008S3, 28f016s3 datasheet 290598-005 nomenclature errata are design defects or errors. these may cause the behavior of these products to deviate from published specifications. hardware and software designed to be used with any given stepping must assume that all errata documented for that stepping are present on all devices. specification changes are modifications to the current published specifications. specification clarifications describe a specification in greater detail or further highlight a specifications impact to a complex design situation. documentation changes include typos, errors, or omissions from the current published specifications.
28f004s3/28F008S3/28f016s3 specification update 297799-009 february, 1999 3 of 14 note: errata remain in the specification update throughout the products lifecycle, or until a particular st epping is no longer commercially available. under these circumstances, errata removed from the specification update are archived and available upon request. specification changes, specification clarifications and documentation changes are removed from the specification update when the appropriate changes are made to the appropriate product specification or user documentation (datasheets, manuals, etc.).
28f004s3/28F008S3/28f016s3 specification update 4 of 14 february, 1999 297799-009 summary tables of changes the following tables indicate the specification changes, errata, specification clarifications, or documentation changes which apply to 3 volt flashfile? memory; 28f004s3, 28F008S3, 28f016s3 datasheet. intel may fix some of the errata in a future stepping of the component, and to account for the other outstanding issues through documentation or specification changes as noted. these tables use the following notations: codes used in summary tables steps x: errata exists in the stepping indicated. specification change or clarification that applies to this stepping. (no mark) or (blank box): this erratum is fixed in listed stepping or specification change does not apply to listed stepping. page (page): page location of item in this document. status doc: document change or update will be implemented. fix: this erratum is intended to be fixed in a future step of the component. fixed: this erratum has been previously fixed. nofix: there are no plans to fix this erratum. eval: plans to fix this erratum are under evaluation. row change bar to left of table row indicates this erratum is either new or modified from the previous version of the document.
28f004s3/28F008S3/28f016s3 specification update 297799-009 february, 1999 5 of 14 errata density 4-mbit steppings 8-mbit steppings 16-mbit steppings # a-0 a-1, a-3 a-6 a-8 b-0 a-0 page status errata 1 x x x 7 fixed deep power-down current 2 x x x 8 fixed block locking and unlocking 3 x x 9 fixed ce#-high time 4 x 10 fixed ce# glitch sensitivity 5 x x x 12 fixed rp# control during power-up 6 x 13 eval active read current specification changes density 4-mbit steppings 8-mbit steppings 16-mbit steppings # a-0 a-1, a-3 a-6 a-8 b-0 a-0 page status specification changes n/a 14 none in this specification update revision. specification clarifications density 4-mbit steppings 8-mbit steppings 16-mbit steppings # a-0 a-1, a-3 a-6 a-8 b-0 a-0 page status specification clarifications 1 x xxxx x 14 docv pp program and erase voltages on sub 0.4 m 3 volt flashfile? memory documentation changes # document revision page status documentation changes n/a none in this specification update revision.
28f004s3/28F008S3/28f016s3 specification update 6 of 14 february, 1999 297799-009 identification information markings the finished processing order (fpo) number correlates to a specific device stepping as illustrated in the table below: density stepping (1,2) identifier 4-mbit a-0 ninth digit on topside fpo mark (third line) = any alphabetic letter 8-mbit a-1,-3 ninth digit on topside fpo mark (third line) = j, k, l, m, or n a-6 ninth digit on topside fpo mark (third line) = p or q a-8 ninth digit on topside fpo mark (third line) = u or v b-0 ninth digit on topside fpo mark (third line) = w 16-mbit a-0 ninth digit on topside fpo mark (third line) = any alphabetic letter note: 1. device steppings are based on continuous updates made in manufacturing and testing of the device and represent the current material shipped. 2. 8-mbit a-0, -2, -4, -5, and -7 material was never sampled.
28f004s3/28F008S3/28f016s3 specification update 297799-009 february, 1999 7 of 14 errata 1. deep power-down current problem: i ccd deviates from the published specification. please replace the existing datasheet specification with the following information: 2.7 v v cc 3.3 v v cc test sym parameter notes typ max typ max unit conditions i ccd v cc deep power- down current 11212 m a rp# = gnd 0.2 v i out (ry/by#) = 0 ma notes: 1. all currents are in rms unless otherwise noted. these currents are valid for all product versions (packages and speeds). implication: the increased current requirements may have an impact on power supply loading or battery life. workaround: none. status: this erratum has been fixed. refer to the summary tables of changes to determine the affected stepping(s). affected products: refer to the summary tables of changes to determine the affected products and stepping(s).
28f004s3/28F008S3/28f016s3 specification update 8 of 14 february, 1999 297799-009 2. block locking and unlocking problem: for the 8- and 16-mbit devices that are effected by this erratum, the block unlocking security feature is currently nonfunctional. attempts to unlock blo cks, using the clear block lock-bits command sequence, may cause subsequent program and/or block erase failures. the failure is seen as a device protection error in the status register. implication: block unlocking feature is disabled. this erratum effects the following command, clear block lock-bits. locking blo cks using the set block lock-bits command (while rp# is equal to 12 volts) is still supported. workaround: to prevent accidental software block lock-bit clearing, intel permanently sets the master lock-bit during the test flow. this disables the ability to lock and unlock blo cks via software only with rp# = v ih . block locking and unlocking requires 12 v on the component's rp# input when the master lock-bit is set. don't execute the clear block lock-bits command sequence when 12 v is applied to rp#. instead, simply override the block locking mechanism by applying 12 v to rp# to enable program/erase operations that target locked blocks. if data security is of utmost importance, lower v pp voltage equal to or less than v pplk during normal operations. with v pp equal to or less v pplk , the device is protected against all data manipulation operations. status: this erratum has been fixed. refer to the summary tables of changes to determine the affected stepping(s). affected products: 8-mbit a-1, -3, -6, and -8 steppings and 16-mbit a-0 stepping produced before work week 22 of 1997 (second digit on topside fpo marking specifies the last digit in the year and the third and fourth indicate the work week) are affected by this erratum.
28f004s3/28F008S3/28f016s3 specification update 297799-009 february, 1999 9 of 14 3. ce#-high time problem: the component may return invalid data if more than fifteen successive read operations are performed where ce# is deasserted between each read and the corresponding ce#-high pulse width resides within the specifications outlined in the table below. ce#-high pulse width (t ehel ) stepping min max a-1 and -3 100 ns 40 m s a-6 240 ns 700 ns successive read operations that have long ce#-high pulse widths read the implications section, which follows, to determine whether or not your design may be affected by this erratum. implication: if it is determined that ce#-high time violations occur, carefully examine subsequent reads. if the ratio of good to bad (ce#-high times within the specifications outlined in the table above) reads is high, your system may not have a problem. for every bad read the system performs, five good reads for a-1 and a-3 stepping and two good reads for a-6 stepping are needed to cancel the effect of the bad read. so, carefully analyze the flash memory ce# input to understand the ce#-high characteristic.
28f004s3/28F008S3/28f016s3 specification update 10 of 14 february, 1999 297799-009 workaround: if it is determined that your system can pr oduce this ce#-high occurrence, here are solutions to help work around this erratum:. 1. read more than four good reads for a-1 and a-3 stepping and only one read for a-6 stepping during each assertion of ce#, as illustrated in the figure above. 2. issue a byte write command and program ffh to any location before executing a read operation. programming ffh will not alter stored data, but it will give the component sufficient time to prepare for the read operation. status: this erratum has been fixed. refer to the summary tables of changes to determine the affected stepping(s). affected products: refer to the summary tables of changes to determine the affected products and stepping(s). 4. ce# glitch sensitivity problem: a noisy ce# control signal may cause an invalid read. this erroneous read only occurs after the device has received over one hundred consecutive short ce# glitches (t ehel < 65 ns) with ce#-high time (t ehel ) greater than 145 ns (see the figure below, a long series of ce# glitches may induce an invalid read ). ce# hundreds of ce# glitches oe# a 0-19 dq 0-7 t > 145 ns ehel t < 65 ns eleh valid address invalid data a long series of ce# glitches may induce an invalid read
28f004s3/28F008S3/28f016s3 specification update 297799-009 february, 1999 11 of 14 after valid data is read, the device must receive another series of ce# glitches (typically over one hundred) to induce an invalid read. implication: this erratum may affect read operations in systems that have a lot of noise on the flash memorys ce# input. if ce# is generated asynchronously from the upper address lines, noise on ce# can sometimes occur when upper address lines transition from one state to another. however, applications that access flash memory sequentially will have stable upper address lines and will therefore produce fewer ce# glitches. systems that execute code from flash memory or download code from flash memory into dram will usually access the device sequentially; therefore, they will be less susceptible to this erratum. carefully analyze the flash memory ce# input. if glitches are detected, more in-depth system characterization is need to identify susceptibility to this erratum. it is important to understand how these glitches manifest themselves in order to determine whether or not they will cause a problem. 1. in systems that flow unlatc hed addresses to ce# control logic, the decode logic may generate ce# glitches when the address bus transitions from one state to another. however, the processors address switching frequency is usually very fast (somewhere in the order of 1/2 the processors operating frequency) which will cause the glitches high time to be less than 145 ns. if the ce#-high time is less than 145 ns, the glitch has no effect on the component. note: most processors with integrated chip select logic use latched outputs and therefore may not have ce# glitches. 2. if the address bus is not pulled up or pulled down during idle bus cycles, the address bus may be left in an undetermined state. this condition may cause ce# glitches. workaround: if it is determined that the ce# causes a problem, possible solutions to help workaround this erratum are suggested as follows. hardware solution: add system logic to prevent ce# glitches such as latc hed ce# control logic or pullup/pulldown resistors to the address bus. software solution for data storage applications: if the device receives over one hundred consecutive ce# glitches, issue a byte write command and program ffh to any location before executing a read operation. programming ffh will not alter stored data, but it will give the component sufficient time to prepare for the read operation.
28f004s3/28F008S3/28f016s3 specification update 12 of 14 february, 1999 297799-009 status: this erratum has been fixed. refer to the summary tables of changes to determine the affected stepping(s). affected products: refer to the summary tables of changes to determine the affected products and stepping(s). 5. rp# control during power-up problem: rp# must be held low while v cc ramps to a valid level during power transitions. hold rp# active while v cc ramps holding rp# low during power-up blocks spurious writes initiated by system control logic which may occur as the system volt age transitions to a stable level. intel recommends the use of rp# for cpu/memory reset synchronization, write protection, and deep power-down mode. implication: this erratum only affects power-up operations. systems that tie the flash memorys rp# input to the system reset# si gnal typically will not have a problem with erratum because the reset# signal is usually held low during the power-up sequence to properly synchronize the cpu. however, systems that tie rp# directly to v cc will be more exposed to this problem. so, carefully analyze rp# during the power-up condition to fully understand its behavior. workaround: if it is determined that this erratum may cause a problem, here is a possible workaround: use a simple rc delay network to hold rp# low during the power-up condition or tie the rp# input to the system reset# si gnal. this workaround will eliminate your exposure to this problem and also provide your design with addition power-up security.
28f004s3/28F008S3/28f016s3 specification update 297799-009 february, 1999 13 of 14 status: this erratum has been fixed. refer to the summary tables of changes to determine the affected stepping(s). affected products: refer to the summary tables of changes to determine the affected products and stepping(s). 6. active read current problem: i ccr deviates from the published specification. please replace the existing datasheet specification with the following information: 2.7 v v cc 3.3 v v cc test sym parameter notes typ max typ max unit conditions i ccr v cc read current 1,2,3 15 15 ma cmos inputs v cc = v cc max, ce# = gnd f = 5 mhz, i out = 0 ma notes: 1. all currents are in rms unless otherwise noted. these currents are valid for all product versions (packages and speeds). 2. automatic power savings (aps) reduces typical i ccr to 3 ma in static operation. 3. cmos inputs are either v cc 0.2v or gnd 0.2v. ttl inputs are either v il or v ih . implication: the increased current requirements may have an impact on power supply loading or battery life. workaround: none. status: plans to fix this erratum are under evaluation refer to the summary tables of changes to determine the affected stepping(s). affected products: refer to the summary tables of changes to determine the affected products and stepping(s). specification changes there are no specification changes in this specification update revision.
28f004s3/28F008S3/28f016s3 specification update 14 of 14 february, 1999 297799-009 specification clarifications 1. v pp program and erase voltages on sub-0.4 3 volt flashfile? memory family the intel ? 3 volt flashfile memory (x8) family provides in-system program/erase at 3.3 v v pp and faster factory program/erase at 12 v v pp . future sub-0.4 lithography 3 volt flashfile memory products will also include a backward-compatible 12 v programming feature. this mode, however, is not intended for extended use. a 12 v program/erase v pp can be applied for 1000 cycles maximum per block or 80 hours maximum per device. to ensure compatibility with future sub- 0.4 3 volt flashfile memory products, present designs should not permanently connect v pp to 12 v. this will avoid device over-stressing that may cause permanent damage. documentation changes there are no documentation changes in this specification update revision .

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