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this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 1 en29lv400a rev. h, issue date: 2011 / 10 / 27 purpose eon silicon solution inc. (hereinafter called ?eon?) is going to provide its products? top marking on ics with < cfeon > from january 1st, 2009, and without any change of the part number and the compositions of the ics. eon is still keeping the promise of q uality for all the products with the same as that of eon delivered before. please be advised with the change and appreciate your kindly cooperation and fully support eon?s product family. eon products? new top marking cfeon top marking example: continuity of specifications there is no change to this data sheet as a result of offering the device as an eon product. any changes that have been made are the result of normal data sheet improvement and are noted in the document revision summary, where supporte d. future routine revi sions will occur when appropriate, and chan ges will be noted in a revision summary. continuity of ordering part numbers eon continues to support existing part numbers beginning with ?eon? and ?cfeon? top marking. to order these products, during the transition please specify ?eon top marking? or ?cfeon top marking? on your purchasing orders. for more information please contact your local sales office for additional information about eon memory solutions. cfeon part number: xxxx-xxx lot number: xxxxx date code: xxxxx
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 2 en29lv400a rev. h, issue date: 2011 / 10 / 27 features ? 3v, single power supply operation - full voltage range: 2.7-3.6 volt read and write operations for battery-powered applications. - regulated voltage range: 3.0-3.6 volt read and write operations for compatibility with high performance 3.3 volt microprocessors. ? high performance - access times as fast as 45 ns ? low power consumption (typical values at 5 mhz) - 7 ma typical active read current - 15 ma typical program/erase current - 1 a typical standby current (standard access time to active mode) ? flexible sector architecture: - one 16 k-byte, two 8 k-byte, one 32 k-byte, and seven 64 k-byte sectors (byte mode) - one 8 k-word, two 4 k-word, one 16 k-word and seven 32 k-word sectors (word mode) ? sector protection: - hardware lo cking of sectors to prevent program or erase operations within individual sectors - additionally, temporary sector unprotect allows code changes in previously locked sectors. ? high performance program/erase speed - byte/word program time: 8s typical - sector erase time: 500ms typical ? jedec standard embedded erase and program algorithms ? jedec standard data# polling and toggle bits feature ? single sector and chip erase ? sector unprotect mode ? erase suspend / resume modes: read or program another sector during erase suspend mode ? triple-metal double-poly triple-well cmos flash technology ? low vcc write inhibit < 2.5v ? minimum 100k program/erase endurance cycle ? package options - 48-pin tsop (type 1) - 48-ball 6mm x 8mm tfbga - 48-ball 4mm x 6mm wfbga ? commercial and industrial temperature range general description the en29lv400a is a 4-megabit, electrically erasable, read/write non-volatile flash memory, organized as 524,288 bytes or 256,144 words. any byte can be programmed typically in 8s. the en29lv400a features 3.0v voltage read and write operation, with access times as fast as 45ns to eliminate the need for wait states in high-performance microprocessor systems. the en29lv400a has separate output enable (oe#), chip enable (ce#), and write enable (we#) controls, which eliminate bus contention issues. this device is designed to allow either single sector or full chip erase operation, where each sector ca n be individually protected against program/erase operations or temporarily unprotected to erase or program. the device can su stain a minimum of 100k program/erase cycles on each sector. en29lv400a 4 megabit (512k x 8-bit / 25 6k x 16-bit) flash memory boot sector flash memo ry, cmos 3.0 volt-only
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 3 en29lv400a rev. h, issue date: 2011 / 10 / 27 connection diagrams 48-ball tfbga top view, balls facing down 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 standard tsop 48 a15 a14 a13 a12 a11 a10 a9 a8 nc nc we# reset# nc nc ry/by# nc a17 a7 a6 a5 a4 a3 a2 a1 a16 byte# vss dq15/a-1 dq7 dq14 dq6 dq13 dq5 dq12 dq4 vcc dq11 dq3 dq10 dq2 dq9 dq1 dq8 dq0 oe# vss ce# a0
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 4 en29lv400a rev. h, issue date: 2011 / 10 / 27 a6 a5 a4 a3 a2 a2 a1 a0 ce# v ss b6 b5 b4 b3 b2 b1 a4 a3 a5 dq8 oe# dq0 c6 c5 c4 c3 c2 c1 a6 a7 nc dq10 dq9 dq1 d6 d5 d2 d1 a17 nc byte# dq2 e6 e1 nc dq3 f6 g6 f1 g1 nc we# v cc dq12 h6 h5 h2 h1 reset# nc nc dq13 j6 j5 j4 j3 j2 j1 a9 a10 a8 dq4 dq5 dq14 k6 k5 k4 k3 k2 k1 a11 a13 a12 dq11 dq6 dq15/ a - 1 l5 l4 l3 l2 l1 a14 a15 a16 dq7 v ss 48-ball wfbga top view, balls facing down
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 5 en29lv400a rev. h, issue date: 2011 / 10 / 27 table 1. pin description figure 1. logic diagram pin name function a0-a17 addresses dq0-dq14 15 data inputs/outputs dq15 / a-1 dq15 (data input/output, word mode), a-1 (lsb address input, byte mode) ce# chip enable oe# output enable reset# hardware reset pin ry/by# ready/busy output we# write enable vcc supply voltage vss ground nc not connected to anything byte# byte/word mode en29lv400 a dq0 ? dq15 (a-1) a 0 - a17 we# ce# ry/ b y # reset# byte # oe#
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 6 en29lv400a rev. h, issue date: 2011 / 10 / 27 table 2a. top boot block sector architecture address range sector (x16) (x8) sector size (kbytes / kwords) a17 a16 a15 a14 a13 a12 10 3e000h-3ffffh 7c000h-7ffffh 16/8 1 1 1 1 1 x 9 3d000h-3dfffh 7a000h-7bfffh 8/4 1 1 1 1 0 1 8 3c000h-3cfffh 78000h-79fffh 8/4 1 1 1 1 0 0 7 38000h-3bfffh 70000h ? 77fffh 32/16 1 1 1 0 x x 6 30000h-37fffh 60000h - 6ffffh 64/32 1 1 0 x x x 5 28000h-2ffffh 50000h ? 5ffffh 64/32 1 0 1 x x x 4 20000h-27fffh 40000h ? 4ffffh 64/32 1 0 0 x x x 3 18000h-1ffffh 30000h ? 3ffffh 64/32 0 1 1 x x x 2 10000h-17fffh 20000h - 2ffffh 64/32 0 1 0 x x x 1 08000h-0ffffh 10000h - 1ffffh 64/32 0 0 1 x x x 0 00000h-07fffh 00000h - 0ffffh 64/32 0 0 0 x x x
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 7 en29lv400a rev. h, issue date: 2011 / 10 / 27 table 2b. bottom boot block sector architecture address range sector (x16) (x8) sector size (kbytes/ kwords) a17 a16 a15 a14 a13 a12 10 38000h-3ffffh 70000h ?7ffffh 64/32 1 1 1 x x x 9 30000h-37fffh 60000h ? 6ffffh 64/32 1 1 0 x x x 8 28000h-2ffffh 50000h ? 5ffffh 64/32 1 0 1 x x x 7 20000h-27fffh 40000h ? 4ffffh 64/32 1 0 0 x x x 6 18000h-1ffffh 30000h ? 3ffffh 64/32 0 1 1 x x x 5 10000h-17fffh 20000h ? 2ffffh 64/32 0 1 0 x x x 4 08000h-0ffffh 10000h ? 1ffffh 64/32 0 0 1 x x x 3 04000h-07fffh 08000h ? 0ffffh 32/16 0 0 0 1 x x 2 03000h-03fffh 06000h ? 07fffh 8/4 0 0 0 0 1 1 1 02000h-02fffh 04000h ? 05fffh 8/4 0 0 0 0 1 0 0 00000h-01fffh 00000h ? 03fffh 16/8 0 0 0 0 0 x
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 8 en29lv400a rev. h, issue date: 2011 / 10 / 27 product selector guide product number en29lv400a regulated voltage range: vcc=3.0-3.6 v -45r -55r speed option full voltage range: vcc=2.7 ? 3.6 v -70 max access time, ns (t acc ) 45 55 70 max ce# access, ns (t ce ) 45 55 70 max oe# access, ns (t oe ) 25 30 30 block diagram we# ce# oe# state control command register erase voltage generator input/output buffers program voltage generator chip enable output enable logic data latch y-decoder x-decoder y-gating cell matrix timer vcc detector a0-a17 vcc vss dq0-dq15 (a-1) address latch block protect switches stb stb ry/by #
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 9 en29lv400a rev. h, issue date: 2011 / 10 / 27 table 3. operating modes 4m flash user mode table dq8-dq15 operation ce# oe# we# reset# a0-a17 dq0-dq7 byte# = v ih byte# = v il read l l h h a in d out d out high-z write l h l h a in d in d in high-z cmos standby v cc 0.3v x x v cc 0.3v x high-z high-z high-z output disable l h h h x high-z high-z high-z hardware reset x x x l x high-z high-z high-z temporary sector unprotect x x x v id a in d in d in x notes: l=logic low= v il , h=logic high= v ih , v id =11 0.5v, x=don?t care (either l or h, but not floating!), d in =data in, d out =data out, a in =address in table 4. device identifi ction (autoselect codes) 4m flash manufacturer/device id table note: 1. a8 = h is recommended for manufacturing id check. if a manufacturing id is read with a8=l, the chip will output a configuration code 7fh. 2. a9 = vid is for hv a9 autoselect mode only. a9 must be vcc (cmos logic level) for command autoselect mode. description mode ce# oe# we# a17 to a12 a11 to a10 a9 2 a8 a7 a6 a5 to a2 a1 a0 dq8 to dq15 dq7 to dq0 h 1 1ch manufacturer id: eon l l h x x v id l xlxll x 7fh word l l h 22h b9h device id (top boot block) byte l l h x x v id xxlxlh x b9h word l l h 22h bah device id (bottom boot block) byte l l h x x v id xxlxlh x bah x 01h (protected) sector protection verification l l h sa x v id xxlxh l x 00h (unprotected)
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 10 en29lv400a rev. h, issue date: 2011 / 10 / 27 user mode definitions word / byte configuration the signal set on the byte# pin controls whether the device data i/o pins dq15-dq0 operate in the byte or word configuration. when the byte# pin is set at logic ?1?, then the device is in word configuration, dq15-dq0 are active and are controlled by ce# and oe#. on the other hand, if the byte# pin is set at logic ?0?, then the device is in byte configuration, and only data i/o pins dq0-dq7 are active and controlled by ce# and oe#. the data i/o pins dq8-dq14 are tri-stated, and the dq15 pin is used as an input for the lsb (a-1) address function. standby mode the en29lv400a has a cmos-compatible standby mode, which reduces the current to < 1a (typical). it is placed in cmos-compatible standby when the ce# pin is at v cc 0.5. reset# and byte# pin must also be at cmos input levels. the device also has a ttl-compatible standby mode, which reduces the maximum v cc current to < 1ma. it is placed in ttl-compatible standby when the ce# pin is at v ih . when in standby modes, the outputs are in a high-impedance state independent of the oe# input. read mode the device is automatically set to reading array data after device power-up. no commands are required to retrieve data. the device is also ready to read array data after completing an embedded program or embedded erase algorithm. after the device accepts an erase suspend command, the device enters the erase suspend mode. the system can read array data using the standard read timings, except that if it reads at an address within erase-suspended sectors, the device outputs status data. after completing a programming operation in the erase suspend mode, the system may once again read array data with the same exception. see ?erase suspend/erase resume commands? for more additional information. the system must issue the reset command to re-enable the device for reading array data if dq5 goes high, or while in the autoselect mode. see the ?reset command? additional details. output disable mode when the oe# pin is at a logic high level (v ih ), the output from the en29lv400a is disabled. the output pins are placed in a high impedance state. auto select identification mode the autoselect mode provides manufacturer and device identification, and sector protection verification, through identifier codes output on dq15?dq0. this mode is primarily intended for programming equipment to automatically match a device to be programmed with its corresponding programming algorithm. however, the autoselect codes can also be accessed in-system through the command register. when using programming equipment, the autoselect mode requires v id (10.5v to 11.5 v) on address pin a9. address pins a8, a6, a1, and a0 must be as shown in autoselect codes table. in addition, when verifying sector protection, the sector address must appear on the appropriate highest order address bits. refer to the corresponding sector address tables. the command definitions table shows the remaining address bits that are don?t-care. when all necessary bits have been set as required, the programming equipment may then read the corresponding identifier code on dq15?dq0. to access the autoselect codes in-system; the host system can issue the autoselect command via the command register, as shown in the command definitions table. this method does not require v id . see ?command definitions? for details on using the autoselect mode.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 11 en29lv400a rev. h, issue date: 2011 / 10 / 27 write mode write operations, including programming data and erasing sectors of memory, require the host system to write a command or command sequence to the device. write cycles are initiated by placing the byte or word address on the device?s address inputs while the data to be written is input on dq[7:0] in byte mode (byte# = l) or on dq[15:0] in word mode (byte# = h). the host system must drive the ce# and we# pins low and the oe# pin high for a valid write operation to take place. all addresses are latched on the falling edge of we# an d ce#, whichever happens later. a ll data is latched on the rising edge of we# or ce#, whichever happens first. the system is not required to provide further controls or timings. the device automatically provides internally generated program / erase pulses and verifies the programmed /erased cells? margin. the host system can detect completion of a program or erase operation by observing the ry/by# pin, or by reading the dq[7] (data# polling) and dq[6] (toggle) status bits. the ?command definitions? section of this document provides details on the specific device commands implemented in the en29lv400a. sector protection/unprotection the hardware sector protection feature disables bo th program and erase operations in any sector. the hardware sector unprotection feature re-enables both program and erase operations in previously protected sectors. there are two methods to enabling this hardware protection circuitry. the first one requires only that the reset# pin be at v id and then standard microprocessor timings can be used to enable or disable this feature. see flowchart 7a and 7b for the algorithm and figure 12 for the timings. when doing sector unprotect, all the other sectors should be protected first. the second method is meant for programming equipment. this method requires v id be applied to both oe# and a9 pin and non-standard microprocessor timings are used. this method is described in a separate document called en29lv400a supplement, which can be obtained by contacting a representative of e on silicon devices, inc. temporary sector unprotect this feature allows temporary unprotection of previously protected sector groups to change data while in-system. the sector unprotect mode is activated by setting the reset# pin to v id . during this mode, formerly protected sectors can be programmed or erased by simply selecting the sector addresses. once is removed from the reset# pin, all the previously protected sectors are protected again. see accompanying figure and timing diagrams for more details. automatic sleep mode the automatic sleep mode minimizes flash device energy consumption. the device automatically enables this mode when addresses remain stable for t acc + 30ns. the automatic sleep mode is independent of the ce#, we# and oe# control signals. standard address access timings provide new data when addresses are changed. while in sleep mode, output is latched and always available to the system. icc 4 in the dc characteristics table represents the automatic sleep more current specification. start reset#=v id (note 1) perform erase or program operations reset#=v ih temporary sector unprotect completed ( note 2 ) notes: 1. all protected sectors unprotected. 2. previously protected sectors protected again.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 12 en29lv400a rev. h, issue date: 2011 / 10 / 27 hardware data protection the command sequence requirement of unlock cycles for programming or erasing provides data protection against inadvertent writes as seen in the command definitions table. additionally, the following hardware data protection measures prevent accidental erasure or programming, which might otherwise be caused by false system level signals during vcc power up and power down transitions, or from system noise. low v cc write inhibit when vcc is less than v lko , the device does not accept any write cycles. this protects data during vcc power up and power down. the command register and all internal program/erase circuits are disabled, and the device resets. subsequent writes are ignored until vcc is greater than v lko . the system must provide the proper signals to the control pins to prevent unintentional writes when vcc is greater than v lko . write pulse ?glitch? protection noise pulses of less than 5 ns (typical) on oe#, ce# or we# do not initiate a write cycle. logical inhibit write cycles are inhibited by holding any one of oe# = v il , ce# = v ih , or we# = v ih . to initiate a write cycle, ce# and we# must be a logical zero while oe# is a logical one. if ce#, we#, and oe# are all logical zero (not recommended usag e), it will be co nsidered a read. power-up write inhibit during power-up, the device automatically resets to read mode and locks out write cycles. even with ce# = v il , we# = v il and oe# = v ih , the device will not accept comma nds on the rising edge of we#.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 13 en29lv400a rev. h, issue date: 2011 / 10 / 27 command definitions the operations of the en29lv400a are selected by one or more commands written into the command register to perform read/reset memory, read id, read sector protection, program, sector erase, chip erase, erase suspend and erase resume. commands are made up of data sequences written at specific addresses via the command register. the sequences for the specified operation are defined in the command definitions table (table 5). incorrect addresses, incorrect data values or improper se quences will reset the de vice to read mode. table 5. en29lv400a command definitions bus cycles 1 st cycle 2 nd cycle 3 rd cycle 4 th cycle 5 th cycle 6 th cycle command sequence cycles addr data addr data addr data addr data addr data addr data read 1 ra rd reset 1 xxx f0 000 7f word 555 2aa 555 100 1c 000 7f manufacturer id byte 4 aaa aa 555 55 aaa 90 200 1c word 555 2aa 555 x01 22b9 device id top boot byte 4 aaa aa 555 55 aaa 90 x02 b9 word 555 2aa 555 x01 22ba device id bottom boot byte 4 aaa aa 555 55 aaa 90 x02 ba xx00 word 555 2aa 555 (sa) x02 xx01 00 autoselect sector protect verify byte 4 aaa aa 555 55 aaa 90 (sa) x04 01 word 555 2aa 555 program byte 4 aaa aa 555 55 aaa a0 pa pd word 555 2aa 555 555 2aa 555 chip erase byte 6 aaa aa 555 55 aaa 80 aaa aa 555 55 aaa 10 word 555 2aa 555 555 2aa sector erase byte 6 aaa aa 555 55 aaa 80 aaa aa 555 55 sa 30 erase suspend 1 xxx b0 erase resume 1 xxx 30 address and data values indicated in hex ra = read address: address of the memory location to be read. this is a read cycle. rd = read data: data read from location ra during read operation. this is a read cycle. pa = program address: address of the memory location to be programmed. x = don?t-care pd = program data: data to be programmed at location pa sa = sector address: address of the sector to be erased or verified. address bits a17-a12 uniquely select any sector. reading array data the device is automatically set to reading array data after power up. no commands are required to retrieve data. the device is also ready to read array data after completing an embedded program or embedded erase algorithm. following an erase suspend command, erase suspend mode is entered. the system can read array data using the standard read timings, with the only difference in that if it reads at an address within erase suspended sectors, the device outputs status data. after completing a programming operation in the erase suspend mode, the system may once again read array data with the same exception. the reset command must be issued to re-enable the device for reading array data if dq5 goes high, or while in the autoselect mode. see next section for details on reset.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 14 en29lv400a rev. h, issue date: 2011 / 10 / 27 reset command writing the reset command to the device resets the device to reading array data. address bits are don?t- care for this command. the reset command may be written between the sequence cycles in an erase command sequence before erasing begins. this resets the device to reading array data. once erasure begins, however, the device ignores reset commands until the operation is complete. the reset command may be written between the sequence cycles in a program command sequence before programming begins. this resets the device to reading array data (also applies to programming in erase suspend mode). once programming begins, however, the device ignores reset commands until the operation is complete. the reset command may be written between the sequence cycles in an autoselect command sequence. once in the autoselect mode, the reset command must be written to return to reading array data (also applies to autoselect during erase suspend). if dq5 goes high during a program or erase operation, writing the reset command returns the device to reading array data (also applies during erase suspend). autoselect command sequence the autoselect command sequence allows the host system to access the manufacturer and devices codes, and determine whether or not a sector is protected. the command definitions table shows the address and data requirements. this is an alternative to the method that requires v id on address bit a9 and is intended for prom programmers. two unlock cycles followed by the autoselect command initiate the autoselect command sequence. autoselect mode is then entered and the system may read at addresses shown in table 4 any number of times, without needing another command sequence. the system must write the reset command to exit the autoselect mode and return to reading array data. word / byte programming command the device may be programmed by byte or by word, depending on the state of the byte# pin. programming the en29lv400a is performed by using a four bus-cycle operation (two unlock write cycles followed by the program setup command and program data write cycle). when the program command is executed, no additional cpu controls or timings are necessary. an internal timer terminates the program operation automatically. addre ss is latched on the falling edge of ce# or we#, whichever is last; data is latched on the rising edge of ce# or we#, whichever is first. programming status may be checked by sampling data on dq7 (data# polling) or on dq6 (toggle bit). when the program operation is successfully completed, the device returns to read mode and the user can read the data programmed to the device at that address. note that data can not be programmed from a 0 to a 1. only an erase operation can change a data from 0 to 1. when programming time limit is exceeded, dq5 will produce a logi cal ?1? and a reset command can retu rn the device to read mode. chip erase command chip erase is a six-bus-cycle operation. the chip erase command sequence is initiated by writing two unlock cycles, followed by a set-up command. two additional unlock write cycles are then followed by the chip erase command, which in turn invokes the embedded erase algorithm. the device does not require the system to preprogram prior to eras e. the embedded erase algorithm automatically preprograms and verifies the entire memory for an all zero data pattern prior to electrical erase. the system is not required to provide any controls or timings during these operations. the command definitions table shows the address and data requirements for the chip erase command sequence. any commands written to the chip during the embedded chip erase algorithm are ignored.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 15 en29lv400a rev. h, issue date: 2011 / 10 / 27 the system can determine the status of the erase operation by using dq7, dq6, or dq2. see ?write operation status? for information on these status bits. when the embedded erase algorithm is complete, the device returns to reading array data and addresses are no longer latched. flowchart 4 illustrates the algorithm for the erase operation. see the erase/program operations tables in ?ac characteristics? for parameters, and to the chip/sector erase operation timings for timing waveforms. sector erase command sequence sector erase is a six bus cycle operation. the sector erase command sequence is initiated by writing two un-lock cycles, followed by a set-up command. two additional unlock write cycles are then followed by the address of the sector to be erased, and the sector erase command. the command definitions table shows the address and data requirements for the sector erase command sequence. once the sector erase operation has begun, only the erase suspend command is valid. all other commands are ignored. when the embedded erase algorithm is complete, the device returns to reading array data and addresses are no longer latched. the system can determine the status of the erase operation by using dq7, dq6, or dq2. refer to ?write operation status? for information on these status bits. flowchart 4 illustrates the algorithm for the erase operation. refe r to the erase/program operations tables in the ?ac characteristics? section for parameters, and to the sector erase operations timing diagram for timing waveforms. erase suspend / resume command the erase suspend command allows the system to interrupt a sector erase operation and then read data from, or program data to, any sector not selected for erasure. this command is valid only during the sector erase operation. the erase suspend command is ignored if written during the chip erase operation or embedded program algorithm. addresses are don?t-cares when writing the erase suspend command. when the erase suspend command is written during a sector erase operation, the device requires a maximum of 20 s to suspend the erase operation. after the erase operation has been suspended, the system can read array data from or program data to any sector not selected for erasure. (the device ?erase suspends? all sectors selected for erasure.) normal read and write timings and command definitions apply. reading at any address within erase- suspended sectors produces status data on dq7?dq0. the system can use dq7, or dq6 and dq2 together, to determine if a sector is actively erasing or is erase-suspended. see ?write operation status? for information on these status bits. after an erase-suspended program operation is complete, the system can once again read array data within non-suspended sectors. the system can determine the status of the program operation using the dq7 or dq6 status bits, just as in the standard program operation. see ?write operation status? for more information. the autoselect command is not supported during erase suspend mode. the system must write the erase resume command (a ddress bits are don?t-care) to exit the erase suspend mode and continue the sector erase operation. further writes of the resume command are ignored. another erase suspend command can be written after the device has resumed erasing.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 16 en29lv400a rev. h, issue date: 2011 / 10 / 27 write operation status dq7: data# polling the en29lv400a provides data# polling on dq7 to indicate the status of the embedded operations. the data# polling feature is active during the embedded programming, sector erase, chip erase, and erase suspend. (see table 6) when the embedded programming is in progress, an attempt to read the device will produce the complement of the data written to dq7. upon the completion of the embedded programming, an attempt to read the device will produce the true da ta written to dq7. for the embedded programming, data# polling is valid after the rising edge of the four th we# or ce# pulse in the four-cycle sequence. when the embedded erase is in pr ogress, an attempt to read the de vice will produce a ?0? at the dq7 output. upon the completion of th e embedded erase, the device will produce the ?1? at the dq7 output during the read cycles. for chip erase, the data# po lling is valid after the rising edge of the sixth we# or ce# pulse in the six-cycle sequ ence. data# polling is valid after t he last rising edge of we# or ce# pulse for chip erase or sector erase. data# polling must be performed at any address within a sector that is being progra mmed or erased and not a protected sector. otherwise, data# polling ma y give an inaccurate result if the address used is in a protected sector. just prior to the completion of the embedded operations, dq7 may change asynchronously when the output enable (oe#) is low. this means that the device is driving status information on dq7 at one instant of time and valid data at the next instant of time. depending on when the system samples the dq7 output, it may read the status of valid data. even if the device has completed the embedded operations and dq7 has a valid da ta, the data output on dq0-dq6 ma y be still invalid. the valid data on dq0-dq7 will be read on the subsequent read attempts. the flowchart for data# polling (dq7) is shown on flowchart 5. the dat a# polling (dq7) timing diagram is shown in figure 8. ry/by#: ready/busy status output the ry/by# is a dedicated, open-drain output pin that indicates whether an embedded algorithm is in progress or completed. the ry/by# status is valid after the rising edge of the final we# pulse in the command sequence. since ry/by# is an open-drain output, several ry/by# pins can be tied together in parallel with a pull-u p resistor to vcc. in the output-low period, signifying busy, the device is actively erasing or programming. this includes programming in the erase suspend mode. if the output is high, signifying the ready, the device is ready to read array data (including during the erase suspend mode), or is in the standby mode. dq6: toggle bit i the en29lv400a provides a ?toggle bit? on dq6 to indicate the status of the embedded programming and erase operations. (see table 6) during an embedded program or erase operation, successive attempts to read data from the device at any address (by active oe# and ce #) will result in dq6 toggling be tween ?zero? and ?one?. once the embedded program or erase operation is completed, dq6 will stop toggling and valid data will be read on the next successive attempts. during embedded programming, the toggle bit is valid after the rising edge of the fourth we# pulse in the four-cycle sequence. during erase operation, the toggle bit is valid after the rising edge of the sixth we# pulses for sector erase or chip erase.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 17 en29lv400a rev. h, issue date: 2011 / 10 / 27 in embedded programmi ng, if the sector being written to is protected, dq6 will toggles for about 2 s, then stop toggling without the data in the sector having changed. in sector erase or chip erase, if all selected sectors are protected, dq6 will toggle for about 100 s. the chip will then return to the read mode without changing data in all protected sectors. the flowchart for the toggle bit (dq6) is shown in flowchart 6. the toggle bit timing diagram is shown in figure 9 . dq5: exceeded timing limits dq5 indicates whether the program or erase time has exceeded a specified internal pulse count limit. under these conditions dq5 produces a ?1.? this is a failure condition that indicates the program or erase cycle was not successfully completed. since it is possible that dq5 can become a 1 when the device has successfully completed its operation and has returned to read mode, the user must check again to see if the dq6 is toggling after detecting a ?1? on dq5. the dq5 failure condition may appear if the system tries to program a ?1? to a location that is previously programmed to ?0.? only an erase operation can change a ?0? back to a ?1 .? under this condition, the device halts the operation, and when the operation has exceeded the timing limits, dq5 produces a ?1.? under both these conditions, the system must issue the reset command to return the device to reading array data. dq3: sector erase timer after writing a sector erase command sequence, the output on dq3 can be used to determine whether or not an erase operation has begun. (the sector erase timer does not apply to the chip erase command.) when sector erase starts, dq3 switches fr om ?0? to ?1.? this device does not support multiple sector erase command sequences so it is not very meaningful since it immediately shows as a ?1? after the first 30h command. future devices may support this feature. dq2: erase toggle bit ii the ?toggle bit? on dq2, when used with dq6, indicates whether a particular sector is actively erasing (that is, the embedded erase algorithm is in progress), or whether that sector is erase-suspended. toggle bit ii is valid after the rising edge of the final we# pulse in the command sequence. dq2 toggles when the system reads at addresses within those sectors that have been selected for erasure. (the system may use either oe# or ce# to control the read cycles.) but dq2 cannot distinguish whether the sector is actively erasing or is erase-suspended. dq6, by comparison, indicates whether the device is actively erasing, or is in erase suspend, but cannot distinguish which sectors are selected for erasure. thus, both status bits are required for sector and mode information. refer to the following table to compare outputs for dq2 and dq6. flowchart 6 shows the toggle bit algorithm, and the section ?dq2: toggle bit? explains the algorithm. see also the ?dq6: toggle bit i? subsection. refer to the toggle bit timings figure for the toggle bit timing diagram. the dq2 vs. dq6 figure shows the differences between dq2 and dq6 in graphical form. reading toggle bits dq6/dq2 refer to flowchart 6 for the following discussion. whenever the system initially begins reading toggle bit status, it must read dq7?dq0 at least twice in a row to determine whether a toggle bit is toggling. typically, a system would note and store the value of the toggle bit after the first read. after the second read, the system would compare the new value of the toggle bit with the first. if the toggle bit is not toggling, the device has completed the program or erase operation. the system can read array data on dq7?dq0 on the following read cycle.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 18 en29lv400a rev. h, issue date: 2011 / 10 / 27 however, if after the initial two read cycles, the system determines that the toggle bit is still toggling, the system also should note whether the value of dq5 is high (see the section on dq5). if it is, the system should then determine again whether the toggle bit is toggling, since the toggle bit may have stopped toggling just as dq5 went high. if the toggle bit is no longer toggling, the device has successfully completed the program or erase operation. if it is still toggling, the device did not complete the operation successfully, and the system must write th e reset command to return to reading array data. the remaining scenario is that the system initially de termines that the toggle bit is toggling and dq5 has not gone high. the system may continue to monitor the toggle bit and dq5 through successive read cycles, determining the status as described in the previous paragraph. alternatively, it may choose to perform other system tasks. in this case, the system must start at the beginning of the algorithm when it returns to determine the status of the operation (top of flowchart 6). write operation status operation dq7 dq6 dq5 dq3 dq2 ry/by# embedded program algorithm dq7# toggle 0 n/a no toggle 0 standard mode embedded erase algorithm 0 toggle 0 1 toggle 0 reading within erase suspended sector 1 no toggle 0 n/a toggle 1 reading within non-erase suspended sector data data data data data 1 erase suspend mode erase-suspend program dq7# toggle 0 n/a n/a 0
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 19 en29lv400a rev. h, issue date: 2011 / 10 / 27 table 6. status register bits dq name logic level definition ?1? erase complete or erase sector in erase suspend ?0? erase on-going dq7 program complete or data of non-erase sector during erase suspend 7 data# polling dq7# program on-going ?-1-0-1-0-1-0-1-? erase or program on-going dq6 read during erase suspend 6 toggle bit ?-1-1-1-1-1-1-1-? erase complete ?1? program or erase error 5 time out bit ?0? program or erase on-going ?1? erase operation start 3 erase time out bit ?0? erase timeout period on-going ?-1-0-1-0-1-0-1-? chip erase, erase or erase suspend on currently addressed sector. (when dq5=1, erase error due to currently addressed sector. program during erase suspend on-going at current address 2 toggle bit dq2 erase suspend read on non erase suspend sector notes: dq7 data# polling: indicates the p/e c status check during pr ogram or erase, and on completion before checking bits dq5 for program or erase success. dq6 toggle bit: remains at constant level when p/e operations are complete or erase suspend is acknowledged. successive reads output complementary data on dq6 while programming or erase operation are on-going. dq5 tim out bit: set to ?1? if failure in programming or erase dq3 sector erase command timeout bit: operation has started. only possible command is erase suspend (es). dq2 toggle bit: indicates the erase status and allows identification of the erased sector.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 20 en29lv400a rev. h, issue date: 2011 / 10 / 27 embedded algorithms flowchart 1. embedded program star t write program command sequence (shown belo w) data# poll device las t a ddress? programming done incremen t address no ye s verify data? no ye s flowchart 2. embedded program command sequence see the command definitions section fo r more information on word mode. 2aah / 55h 555h / aah 555h / a0h program address / program data
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 21 en29lv400a rev. h, issue date: 2011 / 10 / 27 flowchart 3. embedded erase flowchart 4. embedded erase command sequence see the command definitions section fo r more information on word mode. chip erase sector erase 2aah/55h 555h/aah 555h/80h 2aah/55h 555h/aah 555h/10h 555h/aah 2aah/55h 555h/80h 555h/aah 2aah/55h sector address/30h start write erase command sequence data poll from system or toggle bit successfully completed erase done data =ffh? yes no
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 22 en29lv400a rev. h, issue date: 2011 / 10 / 27 flowchart 5. data# polling algorithm notes: (1) this second read is necessary in case the first read was done at the exact instant when the status data was in transition. flowchart 6. toggle bit algorithm notes: (2) this second set of reads is necessary in case the first set of reads was done at the exact instant when the status data was in transition. no yes dq6 = toggle? dq5 = 1? dq6 = toggle? no no yes yes read data twice start read data twice (2) fail pass no no dq7 = data? dq5 = 1? dq7 = data? yes yes no yes read data start read data (1) fail pass
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 23 en29lv400a rev. h, issue date: 2011 / 10 / 27 flowchart 7a. in-system sector protect flowchart start plscnt = 1 reset# = v id wait 1 s first write cycle = 60h? no temporary sector unprotect mode yes set up sector address sector protect: write 60h to sector addr with a6 = 0, a1 = 1, a0 = 0 wait 150 s verify sector protect: write 40h to sector address with a6 = 0, a1 = 1, a0 = 0 read from sector address with a6 = 0, a1 = 1, a0 = 0 data = 01h? no plscnt = 25? increment plscnt no device failed yes protect another sector? yes reset plscnt = 1 no remove v id from reset# write reset command sector protect complete sector protect algorithm yes wait 0.4 s
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 24 en29lv400a rev. h, issue date: 2011 / 10 / 27 flowchart 7b. in-system sector unprotect flowchart start plscnt = 1 reset# = v id wait 1 s first write cycle = 60h? temporary sector unprotect mode no yes all sectors protected? yes no protect all sectors: the indicated portion of the sector protect algorithm must be performed for all unprotected sectors prior to issuing the first sector unprotect address (see diagram 7a.) set up first sector address sector unprotect: write 60h to sector address with a6 = 1, a1 = 1, a0 = 0 wait 15 ms verify sector unprotect: write 40h to sector address with a6 = 1, a1 = 1, a0 =0 read from sector address with a6 = 1, a1 = 1, a0 = 0 data = 00h? no plsccnt = 1000? no increment plscnt yes device failed last sector verified? no set up next sector address remove v id from reset# write reset command sector unprotect com p lete sector unprotect algorithm wait 0.4 s yes yes
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 25 en29lv400a rev. h, issue date: 2011 / 10 / 27 table 7. dc characteristics (t a = 0c to 70c or - 40c to 85c; v cc = 2.7-3.6v) notes 1. byte# pin can also be gnd 0.3v. byte# and reset# pin input buffers are always enabled so that they draw power if not at full cmos supply voltages. symbol parameter test conditions min typ max unit i li input leakage current 0v v in vcc 1 a i lo output leakage current 0v v out vcc 1 a supply current (read) cmos byte 6 12 ma i cc1 (read) cmos word ce# = v il ; oe# = v ih ; f = 5mhz 7 12 ma i cc2 supply current (standby - cmos) ce# = byte# = reset# = vcc 0.3v (note 1) 1 5.0 a i cc3 supply current (program or erase) byte program, sector or chip erase in progress 15 30 ma i cc4 automatic sleep mode v ih = vcc 0.3 v v il = vss 0.3 v 1 5.0 a v il input low voltage -0.5 0.8 v v ih input high voltage 0.7 x vcc vcc + 0.3 v v ol output low voltage i ol = 4.0 ma 0.45 v v oh output high voltage cmos i oh = -100 a, vcc - 0.4v v v id a9 voltage (electronic signature) 10.5 11.5 v i id a9 current (electronic signature) a9 = v id 100 a v lko supply voltage (erase and program lock-out) 2.3 2.5 v
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 26 en29lv400a rev. h, issue date: 2011 / 10 / 27 test conditions test specifications test conditions -45r -55r -70 unit output load capacitance, c l 30 30 30 pf input rise and fall times 5 5 5 ns input pulse levels 0.0-3.0 0.0-3.0 0.0-3.0 v input timing measurement reference levels 1.5 1.5 1.5 v output timing measurement reference levels 1.5 1.5 1.5 v device under test c l
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 27 en29lv400a rev. h, issue date: 2011 / 10 / 27 ac characteristics hardware reset (reset#) speed unit parameter std description test setup -45r -55r -70 t rp1 reset# pulse width (during embedded algorithms) min 10 us t rp2 reset# pulse width (not during embedded algorithms) min 500 ns t rh reset# high time before read min 50 ns t rb1 ry/by# recovery time ( to ce#, oe# go low) min 0 ns t rb2 ry/by# recovery time ( to we# go low) min 50 ns t ready1 reset# pin low (during embedded algorithms) to read or write max 20 us t ready2 reset# pin low (not during embedded algorithms) to read or write max 500 ns figure 1. ac waveforms for reset# reset# timings
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 28 en29lv400a rev. h, issue date: 2011 / 10 / 27 ac characteristics word / byte configuration (byte#) speed unit std parameter description -45r -55r -70 t bcs byte# to ce# switching setup time min 0 0 0 ns t cbh ce# to byte# switching hold time min 0 0 0 ns t rbh ry/by# to byte# switching hold time min 0 0 0 ns figure 2. ac waveforms for byte# byte# timings for read operations byte #timings for write operations note: switching byte# pin not allowed during embedded operations t c bh t b cs ce# oe# byte# ce# we# t b cs b y te# t rbh ry/by#
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 29 en29lv400a rev. h, issue date: 2011 / 10 / 27 table 8. ac characteristics read-only operations characteristics parameter symbols speed options jedec standard description test setup -45r -55r -70 unit t avav t rc read cycle time min 45 55 70 ns t avqv t acc address to output delay ce# = v il oe#= v il max 45 55 70 ns t elqv t ce chip enable to output delay oe#= v il max 45 55 70 ns t glqv t oe output enable to output delay max 25 30 30 ns t ehqz t df chip enable to output high z max 10 15 20 ns t ghqz t df output enable to output high z max 10 15 20 ns t axqx t oh output hold time from addresses, ce# or oe#, whichever occurs first min 0 0 0 ns read min 0 0 0 ns t oeh output enable hold time toggle and data# polling min 10 10 10 ns notes: 1. high z is not 100% tested. 2. for -45r,-55r,70 vcc = 3.0v 5% output load : 30pf input rise and fall times: 5ns input rise levels: 0.0 v to vcc timing measurement reference level, input and output: 1.5 v figure 3. ac waveforms for read operations addresses ce# oe# we# outputs reset# ry / by # t b acc 0v high z output valid t b ce b t b oh t b df t b oeh b high z t b oe b t b rc b addresses stable
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 30 en29lv400a rev. h, issue date: 2011 / 10 / 27 table 9. ac characteristics write (erase/program) operations parameter symbols speed options jedec standard description -45r -55r -70 unit t avav t wc write cycle time (note 1) min 45 55 70 ns t avwl t as address setup time min 0 0 0 ns t wlax t ah address hold time min 35 45 45 ns t dvwh t ds data setup time min 20 25 30 ns t whdx t dh data hold time min 0 0 0 ns t oes output enable setup time min 0 0 0 ns read min 0 0 0 ns t oeh output enable hold time toggle and data# polling min 10 10 10 ns t ghwl t ghwl read recovery time before write (oe# high to we# low) min 0 0 0 ns t elwl t cs ce# setuptime min 0 0 0 ns t wheh t ch ce# hold time min 0 0 0 ns t wlwh t wp write pulse width min 25 30 35 ns t whdl t wph write pulse width high min 20 20 20 ns typ 8 8 8 s t whwh1 t whwh1 programming operation (word and byte mode) (note 2) max 300 300 300 s t whwh2 t whwh2 sector erase operation (note 2) typ 0.5 0.5 0.5 s t vcs vcc setup time min 50 50 50 s t vidr rise time to v id min 500 500 500 ns t rb recovery time from ry/by# min 0 0 0 ns t b busy we# high to ry/by# low max 45 55 70 ns notes: 1. not 100% tested. 2. see erase and programming performance for more information.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 31 en29lv400a rev. h, issue date: 2011 / 10 / 27 table 10. ac characteristics write (erase/program) operations alternate ce# controlled writes parameter symbols speed options jedec standard description -45r -55r -70 unit t avav t wc write cycle time (note 1) min 45 55 70 ns t avel t as address setup time min 0 0 0 ns t elax t ah address hold time min 35 45 45 ns t dveh t ds data setup time min 20 25 30 ns t ehdx t dh data hold time min 0 0 0 ns t oes output enable setup time min 0 0 0 ns read min 0 0 0 ns t oeh output enable hold time toggle and data# polling min 10 10 10 ns t ghel t ghel read recovery time before write ( oe high to ce low) min 0 0 0 ns t wlel t ws we# setuptime min 0 0 0 ns t ehwh t wh we# hold time min 0 0 0 ns t eleh t cp write pulse width min 25 30 35 ns t ehel t cph write pulse width high min 20 20 20 ns typ 8 8 8 s t whwh1 t whwh1 programming operation (byte and word mode) (note 2) max 300 300 300 s t whwh2 t whwh2 sector erase operation (note 2) typ 0.5 0.5 0.5 s t vcs vcc setup time min 50 50 50 s t vidr rise time to v id min 500 500 500 ns t rb recovery time from ry/by# min 0 0 0 ns notes: 1. not 100% tested. 2. see erase and programming performance for more information.
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 32 en29lv400a rev. h, issue date: 2011 / 10 / 27 table 11. erase and programming performance limits parameter typ max unit comments sector erase time 0.5 10 sec chip erase time 5 100 sec excludes 00h programming prior to erasure byte programming time 8 300 s word programming time 8 300 s byte 4.2 12.6 chip programming time word 2.1 6.3 sec excludes system level overhead erase/program endurance 100k cycles minimum 100k cycles table 12. 48-pin tsop and bga package capacitance parameter symbol parameter description test setup package typ max unit tsop 6 7.5 c b in b input capacitance v b in b = 0 bga 1.2 1.2 pf tsop 8.5 12 c b out b output capacitance v b out b = 0 bga 1.1 1.2 pf tsop 7.5 9 c b in2 b control pin capacitance v b in b = 0 bga 1.0 1.3 pf note: test conditions are temperature = 25c and f = 1.0 mhz. table 13. data retention parameter description test conditions min unit 150c 10 years data retention time 125c 20 years
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 33 en29lv400a rev. h, issue date: 2011 / 10 / 27 ac characteristics figure 4. ac waveforms for chip /sector erase operations timings notes: 1. sa=sector address (for sector erase) , va=valid address for reading status, d out =true data at read address. 2. v cc shown only to illustrate t vcs measurement references. it cannot o ccur as shown during a valid command sequence. 10 for chip erase t dh t d s 0x55 0x30 status d ou t t whwh 2 v cc a ddresses ce# oe# we# data ry/by# t c h t g hw l t c s t wph t wp t b us y t rb t v cs erase command sequence (last 2 cycles) read status data (last two cycles) t ah t w c 0x2aa s a v a v a t a s 0x555 for chip erase
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 34 en29lv400a rev. h, issue date: 2011 / 10 / 27 figure 5. program operation timings notes: 1. pa=program address, pd=program data, d out is the true data at the program address. 2. v cc shown in order to illustrate t vcs measurement references. it cannot occur as shown during a valid command sequence. t vcs t whwh1 t busy t ds t dh d out status pd oxa0 t rb t ah t as t wc 0x555 pa pa pa program command sequence (last 2 cycles) program command sequence (last 2 cycles) t ghwl data ry/by# v cc we# addresses ce# oe# t ch t wph t cs t wp
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 35 en29lv400a rev. h, issue date: 2011 / 10 / 27 figure 6. ac waveforms for data# polling during embedded algorithm operations notes: 1. va=valid address for reading data# polling status data 2. this diagram shows the first status cycle after the command sequence, the last status read cycle and the array data read cy cle. figure 7. ac waveforms for toggle bit during embedded algorithm operations t b u s y t o eh t df t o e t c e t c h t a cc t r c v a v a va t o h valid data true com p lement comple -ment status data status data true valid data ce# addresses oe# we# dq[7] dq[6:0] ry/by# t c e t o e t c h valid data valid status valid status valid status (first read) (second read) (stops toggling) a ddresses ce# oe# we# dq6, dq2 ry/by# t r c t a cc v a v a v a v a t o eh t df t o h t b u s y
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 36 en29lv400a rev. h, issue date: 2011 / 10 / 27 figure 8. alternate ce# controlled write operation timings notes: pa = address of the memory location to be programmed. pd = data to be programmed at byte address. va = valid address for reading program or erase status d out = array data read at va shown above are the last two cycles of the program or erase command sequence and the last status read cycle reset# shown to illustrate t rh measurement references. it cannot occur as shown during a valid command sequence. figure 9. dq2 vs. dq6 t rh t wh t ghel t cp pd for program 0x30 for sector erase 0x10 for chip erase 0xa0 for program 0x55 for erase d out status t busy t ds t dh t cph t ws t whwh1 / t whwh2 addresses we# oe# ce# data ry/by reset# t ah t as t wc va pa for program sa for sector erase 0x555 for chip erase 0x555 for program 0x2aa for erase we# dq6 dq2 enter embedded erase erase suspend enter erase suspend program erase resume erase enter suspend read enter suspend program erase erase complete erase suspend read
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 37 en29lv400a rev. h, issue date: 2011 / 10 / 27 figure 10. sector protect/unprotect timing diagram notes: use standard microprocessor timings for this device for read and write cycles. for sector protect, use a6=0, a1=1, a0=0. for sector unprotect, use a6=1, a1=1, a0=0. temporary sector unprotect speed option unit parameter std description -45r -55r -70 t vidr v id rise and fall time min 500 ns t rsp reset# setup time for temporary sector unprotect min 4 s figure 11. temporary sect or unprotect timing diagram v id sa, a6,a1,a0 reset# 0 v t vidr t vidr >1
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 38 en29lv400a rev. h, issue date: 2011 / 10 / 27 figure 12. 48l tsop 12mm x 20mm package outline
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 39 en29lv400a rev. h, issue date: 2011 / 10 / 27 figure 13. 48l tfbga 6mm x 8mm package outline min. nor max a - - - - - - 1.30 a1 0.23 0.29 - - - a2 0.84 0.91 - - - d 7.90 8.00 8.10 e 5.90 6.00 6.10 d1 - - - 5.60 - - - e1 - - - 4.00 - - - e - - - 0.80 - - - b 0.35 0.40 0.45 dimension in mm symbol note : 1. coplanarity: 0.1 mm
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 40 en29lv400a rev. h, issue date: 2011 / 10 / 27 figure 14. 48l wfbga 4mm x 6mm package outline note : controlling dimensions are in millimeters (mm).
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 41 en29lv400a rev. h, issue date: 2011 / 10 / 27 absolute maximum ratings parameter value unit storage temperature -65 to +150 c plastic packages -65 to +125 c ambient temperature with power applied -55 to +125 c output short circuit current 1 200 ma a9, oe#, reset# 2 -0.5 to +11.5 v all other pins 3 -0.5 to vcc+0.5 v voltage with respect to ground vcc -0.5 to +4.0 v notes: 1. no more than one output shorted at a time. duration of the short circuit should not be greater than one second. 2. minimum dc input voltage on a9, oe#, reset# pins is ?0. 5v. during voltage transitions, a9, oe#, reset# pins may undershoot v ss to ?1.0v for periods of up to 50ns and to ?2.0v for periods of up to 20ns. see figure below. maximum dc input voltage on a9, oe#, and reset# is 10.5v which may overshoot to 11.5v for periods up to 20ns. 3. minimum dc voltage on input or i/o pins is ?0.5 v. during voltage transitions, inputs may undershoot v ss to ?1.0v for periods of up to 50ns and to ?2.0 v for periods of up to 20ns. see figure below. maximum dc voltage on output and i/o pins is v cc + 0.5 v. during voltage transitions, outputs may overshoot to v cc + 1.5 v for periods up to 20ns. see figure below. 4. stresses above the values so mentioned above may cause permanent damage to the device. these values are for a stress rating only and do not imply that the device should be operated at conditions up to or above these values. exposure of the device to the maximum rating values for extended periods of time may adversely affect the device reliability. recommended operating ranges 1 parameter value unit ambient operating temperature commercial devices industrial devices 0 to 70 -40 to 85 c regulated voltage range: 3.0-3.6 operating supply voltage vcc standard voltage range: 2.7 to 3.6 v 1. recommended operating ranges define those limits between which the functionality of the device is guaranteed. vcc +1.5v maximum negative overshoot maximum positive overshoot waveform waveform
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 42 en29lv400a rev. h, issue date: 2011 / 10 / 27 ordering information en29lv400a t 70 t c p packaging content p = rohs compliant temperature range c = commercial (0 c to +70 c) i = industrial (-40 c to +85 c) package t = 48-pin tsop b = 48-ball thin fine pitch ball grid array (tfbga) 0.80mm pitch, 6mm x 8mm package n = 48-ball very-very-thin-profile fine pitch ball grid array (wfbga) 0.5mm pitch, 4mm x 6 mm package speed 45r = 45ns regulated range 3.0v~3.6v 55r = 55ns regulated range 3.0v~3.6v 70 = 70ns boot code sector architecture t = top sector b = bottom sector base part number en = eon silicon solution inc. 29lv = flash, 3v read program erase 400 = 4 megabit (512k x 8 / 256k x 16) a = version identifier
this data sheet may be revised by subsequent versions ? 2005 eon silicon solution, inc., www.eons si.com or modifications due to changes in technical specifications. 43 en29lv400a rev. h, issue date: 2011 / 10 / 27 revisions list revision no description date a initial release 2004/01/07 b 1. correct the typo of program/erase endurance cycle to 100k at features page 1 2. change the fbga package dimension to enhance the bga substrate and ball strength, the difference is package thickness a : 1.10 mm to 1.31 mm ball size b : 0.3 mm to 0.4 mm 2005/11/8 c 1. remove ,unlock bypass, unlock bypass program, and unlock bypass reset, commands from table 9. 2. remove description of unlock bypass 2006/02/21 d 1. add the t busy description in table 9. write (erase/program) operations in page 28 2. correct the figure 7. program operation timings in page 32 3. update 48 pin tsop-i package outline in page 36 4. change the fbga 48 ball package thickness from 1.31mm to 1.30mm in page 37 2008/04/25 e add eon products? new top marking ?cfeon? information in page 1. 2009/01/09 f 1. add 48-ball 4mm x 6mm wfbga package option. 2. modify table 6 status register bits dq5 from erroe bit to time out bit on page 19. 3. modify test conditions illustration on page 26. 4. update hardware reset (reset#) table and figure 1. ac waveforms for reset# on page 27. 5. modify storage temperature from "-65 to + 125" to "-65 to +150" on page 41. 6. modify p = pb free to p = rohs compliant on page 42. 7. remove the latch up characteristics table. 2009/09/24 g 1. add the chip will output a configur ation code 7fh, if a manufacturing id is read with a8=l (000h). 2. remove the speed option of 90ns. 2011/01/04 h 1. correct the typo of v ih (max.) = vcc + 0.3v on page 25. 2. add bga package capacitance on page 32. 2011/10/27

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