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? 2004 microchip technology inc. ds21712b-page 1 93lc46/56/66 features: ? single supply with programming operation down to 2.5v low-power cmos technology 100 a typical active read current at 2.5v 3 a typical standby current at 2.5v org pin selectable memory configuration 128 x 8- or 64 x 16-bit organization (93lc46) 256 x 8- or 128 x 16-bit organization (93lc56) 512 x 8 or 256 x 16 bit organization (93lc66) self-timed erase and write cycles (including auto-erase) automatic eral before wral power on/off data protection circuitry industry standard 3-wire serial i/o device status signal during erase/write cycles sequential read function 1,000,000 e/w cycles ensured data retention > 200 years 8-pin pdip/soic (soic in jedec standards) temperature ranges supported: description: the microchip technology inc. 93lc46/56/66 are 1k, 2k and 4k low voltage serial electrically erasable proms (eeprom). the device memory is configured as x8 or x16 bits depending on the external logic of levels of the org pin. advanced cmos technology makes these devices ideal for low power nonvolatile memory applications. the 93lc series is available in standard 8-pin pdip and surface mount soic packages. the rotated pin-out 93lc46x/56x/66x are offered in the ?sn? package only. package types block diagram - industrial (i): -40c to +85c 93lc46 93lc56 93lc66 cs clk di do 1 2 3 4 8 7 6 5 v cc nu org v ss pdip/soic nu v cc cs clk 1 2 3 4 8 7 6 5 org v ss do di rotated soic 93lc46x 93lc56x 93lc66x data register output memory array clk v cc v ss clock mode decode logic register cs org di address decoder address counter buffer do 1k/2k/4k 2.5v microwire serial eeprom not recommended for new designs ? please use 93lc46c, 93lc56c or 93lc66c.
93lc46/56/66 ds21712b-page 2 ? 2004 microchip technology inc. 1.0 electrical characteristics absolute maximum ratings (?) v cc ............................................................................................................................... ..............................................6.5v all inputs and outputs w.r.t. v ss ........................................................................................................ -0.6v to v cc + 1.0v storage temperature ............................................................................................................ ...................-65c to +150c ambient temperature with power applied ......................................................................................... .......-40c to +125c esd protection on all pins ............................................................................................................................... ....................... 4kv dc c haracteristics ? notice: stresses above those listed under ?maximum ratings? may cause permanent damage to the device. this is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. exposure to maximum rating conditions for extended periods may affect device reliability. dc characteristics v cc = +2.5v to +5.5v industrial (i): t a = -40c to +85c param. no. sym characteristic min typ max units conditions d1 v ih 1 high-level input voltage 2.0 ? v cc +1 v v cc 2.7v v ih 2 0.7 v cc ?v cc +1 v v cc 2.7v d2 v il 1 low-level input voltage -0.3 ? 0.8 v v cc 2.7v v il 2 -0.3 ? 0.2 v cc vv cc 2.7v d3 v ol 1 low-level output voltage ? ? 0.4 v i ol = 2.1 ma, v cc = 4.5v v ol 2??0.3vi ol = 100 a, v cc = 2.5v d4 v oh 1 high-level output voltage 2.4 ? ? v i ol = 400 a, v cc = 4.5v v oh 2v cc -0.2 ? ? v i ol = 100 a, v cc = 2.5v d5 i li input leakage current ? ? 10 av in = 0.1v to v cc d6 i lo output leakage current ? ? 10 av out = 0.1v to v cc d7 c in , c out pin capacitance (all inputs/outputs) ?? 7pfv in /v out = 0v (note 1 & 2) t a = 25c, f clk = 1 mhz d8 i cc write operating current ? ? 3 ma f clk = 2 mhz, v cc = 5.5v (note 2) d9 i cc read ? ? ? ? ? 100 1 500 ? ma a a f clk = 2 mhz, v cc = 5.5v f clk = 1 mhz, v cc = 3.0v f clk = 1 mhz, v cc = 2.5v d10 i ccs standby current ? ? ? ? ? 3 100 30 ? a a a clk = cs = 0v; v cc = 5.5v clk = cs = 0v; v cc = 3.0v clk = cs = 0v; v cc = 2.5v org, di = v ss or v cc note 1: this parameter is tested at t a = 25c and f clk = 1 mhz. 2: this parameter is periodically sampled and not 100% tested.
? 2004 microchip technology inc. ds21712b-page 3 93lc46/56/66 ac characteristics figure 1-1: synchronous data timing ac characteristics v cc = +2.5v to +5.5v industrial (i): t a = -40c to +85c param. no. sym characteristic min typ max units conditions 1f clk clock frequency ? ? ? ? 2 1 mhz mhz v cc 4.5v v cc < 4.5v 2t ckh clock high time 250 ? ? ns 3t ckl clock low time 250 ? ? ns 4t css chip select setup time 50 ? ? ns relative to clk 5t csh chip select hold time 0 ? ? ns relative to clk 6t csl chip select low time 250 ? ? ns 7t dis data input setup time 100 ? ? ns relative to clk 8t dih data input hold time 100 ? ? ns relative to clk 9t pd data output delay time ? ? 400 ns cl = 100 pf 10 t cz data output disable time ? ? 100 ns cl = 100 pf (note 2) 11 t sv status valid time ? ? 500 ns cl = 100 pf 12 t wc program cycle time ? 4 10 ms erase/write mode 13 t ec ? 8 15 ms eral mode (v cc =5v 10%) 14 t wl ? 16 30 ms wral mode (v cc =5v 10%) 15 ? endurance 1m ? 1m cycles 25c, v cc = 5.0v, block mode (note 3) note 1: this parameter is tested at t a = 25c and f clk = 1 mhz. 2: this parameter is periodically sampled and not 100% tested. 3: this parameter is not tested but ensured by characterization. for endurance estimates in a specific application, please consult the total endurance ? model which can be obtained from microchip?s web site at: www.microchip.com. cs v ih v il v ih v il v ih v il v oh v ol v oh v ol clk di do (read) do (write) 4 7 2 3 8 9 5 9 10 status valid 11 10
93lc46/56/66 ds21712b-page 4 ? 2004 microchip technology inc. table 1-1: instruction set for 93lc46: org = 1 (x 16 organization) table 1-2: instruction set for 93lc46: org = 0 (x 8 organization) table 1-3: instruction set for 93lc56: org = 1 (x 16 organization) table 1-4: instruction set for 93lc56: org = 0 (x 8 organization) instruction sb opcode address data in data out req. clk cycles read 1 10 a5 a4 a3 a2 a1 a0 ? d15 - d0 25 ewen 1 00 1 1 xxxx ? high-z 9 erase 1 11 a5 a4 a3 a2 a1 a0 ? (rdy/bsy )9 eral 1 00 1 0 xxxx ? (rdy/bsy )9 write 1 01 a5 a4 a3 a2 a1 a0 d15 - d0 (rdy/bsy )25 wral 1 00 0 1 xxxx d15 - d0 (rdy/bsy )25 ewds 1 00 0 0 xxxx ? high-z 9 instruction sb opcode address data in data out req. clk cycles read 1 10 a6 a5 a4 a3 a2 a1 a0 ? d7 - d0 18 ewen 1 00 1 1 x x x x x ? high-z 10 erase 1 11 a6 a5 a4 a3 a2 a1 a0 ? (rdy/bsy )10 eral 1 00 1 0 x x x x x ? (rdy/bsy )10 write 1 01 a6 a5 a4 a3 a2 a1 a0 d7 - d0 (rdy/bsy )18 wral 1 00 0 1 x x x x x d7 - d0 (rdy/bsy )18 ewds 1 00 0 0 x x x x x ? high-z 10 instruction sb opcode address data in data out req. clk cycles read 1 10 x a6 a5 a4 a3 a2 a1 a0 ? d15 - d0 27 ewen 1 00 1 1 x x x x x x ? high-z 11 erase 1 11 x a6 a5 a4 a3 a2 a1 a0 ? (rdy/bsy )11 eral 1 00 1 0 x x x x x x ? (rdy/bsy )11 write 1 01 x a6 a5 a4 a3 a2 a1 a0 d15 - d0 (rdy/bsy )27 wral 1 00 0 1 x x x x x x d15 - d0 (rdy/bsy )27 ewds 1 00 0 0 x x x x x x ? high-z 11 instruction sb opcode address data in data out req. clk cycles read 1 10 x a7 a6 a5 a4 a3 a2 a1 a0 ? d7 - d0 20 ewen 1 00 1 1 x x x x x x x ? high-z 12 erase 1 11 x a7 a6 a5 a4 a3 a2 a1 a0 ? (rdy/bsy )12 eral 1 00 1 0 x x x x x x x ? (rdy/bsy )12 write 1 01 x a7 a6 a5 a4 a3 a2 a1 a0 d7 - d0 (rdy/bsy )20 wral 1 00 0 1 x x x x x x x d7 - d0 (rdy/bsy )20 ewds 1 00 0 0 x x x x x x x ? high-z 12
? 2004 microchip technology inc. ds21712b-page 5 93lc46/56/66 table 1-5: instruction set for 93lc66: org = 1 (x 16 organization) table 1-6: instruction set for 93lc66: org = 0 (x 8 organization) instruction sb opcode address data in data out req. clk cycles read 1 10 a7 a6 a5 a4 a3 a2 a1 a0 ? d15 - d0 27 ewen 1 00 1 1 x x x x x x ? high-z 11 erase 1 11 a7 a6 a5 a4 a3 a2 a1 a0 ? (rdy/bsy )11 eral 1 00 1 0 x x x x x x ? (rdy/bsy )11 write 1 01 a7 a6 a5 a4 a3 a2 a1 a0 d15 - d0 (rdy/bsy )27 wral 1 00 0 1 x x x x x x d15 - d0 (rdy/bsy) 27 ewds 1 00 0 0 x x x x x x ? high-z 11 instruction sb opcode address data in data out req. clk cycles read 1 10 a8 a7 a6 a5 a4 a3 a2 a1 a0 ? d7 - d0 20 ewen 1 00 1 1 x x x x x x x ? high-z 12 erase 1 11 a8 a7 a6 a5 a4 a3 a2 a1 a0 ? (rdy/bsy )12 eral 1 00 1 0 x x x x x x x ? (rdy/bsy )12 write 1 01 a8 a7 a6 a5 a4 a3 a2 a1 a0 d7 - d0 (rdy/bsy )20 wral 1 00 0 1 x x x x x x x d7 - d0 (rdy/bsy )20 ewds 1 00 0 0 x x x x x x x ? high-z 12
93lc46/56/66 ds21712b-page 6 ? 2004 microchip technology inc. 2.0 functional description when the org pin is connected to v cc , the (x16) organization is selected. when it is connected to ground, the (x8) organization is selected. instruc- tions, addresses and write data are clocked into the di pin on the rising edge of the clock (clk). the do pin is normally held in a high-z state except when reading data from the device, or when checking the ready/busy status during a programming operation. the ready/busy status can be verified during an erase/write operation by polling the do pin; do low indicates that programming is still in progress, while do high indicates the device is ready. the do will enter the high-z state on the falling edge of the cs. 2.1 start condition the start bit is detected by the device if cs and di are both high with respect to the positive edge of clk for the first time. before a start condition is detected, cs, clk and di may change in any combination (except to that of a start condition), without resulting in any device opera- tion (read, write, erase, ewen, ewds, eral and wral). as soon as cs is high, the device is no longer in the standby mode. an instruction following a start condition will only be executed if the required amount of opcode, address and data bits for any particular instruction is clocked in. after execution of an instruction (i.e., clock in or out of the last required address or data bit) clk and di become ?don't care? bits until a new start condition is detected. 2.2 data in/data out (di/do) it is possible to connect the data in and data out pins together. however, with this configuration it is possible for a ?bus conflict? to occur during the ?dummy zero? that precedes the read operation, if a0 is a logic high level. under such a condition the voltage level seen at data out is undefined and will depend upon the relative impedances of data out and the signal source driving a0. the higher the current sourcing capability of a0, the higher the voltage at the data out pin. 2.3 data protection during power-up, all programming modes of operation are inhibited until v cc has reached a level greater than 1.4v. during power-down, the source data protection circuitry acts to inhibit all programming modes when v cc has fallen below 1.4v at nominal conditions. the ewen and ewds commands give additional protection against accidentally programming during normal operation. after power-up, the device is automatically in the ewds mode. therefore, an ewen instruction must be performed before any erase or write instruction can be executed. 2.4 read the read instruction outputs the serial data of the addressed memory location on the do pin. a dummy zero bit precedes the 16-bit (x16 organization) or 8-bit (x8 organization) output string. the output data bits will toggle on the rising edge of the clk and are stable after the specified time delay (t pd ). sequential read is possible when cs is held high. the memory data will automatically cycle to the next register and output sequentially. 2.5 erase/write enable and disable ( ewen , ewds ) the 93lc46/56/66 power up in the erase/write disable (ewds) state. all programming modes must be preceded by an erase/write enable ( ewen ) instruction. once the ewen instruction is executed, programming remains enabled until an ewds instruction is executed or v cc is removed from the device. to protect against accidental data disturb, the ewds instruction can be used to disable all erase/write functions and should follow all programming operations. execution of a read instruction is independent of both the ewen and ewds instructions. 2.6 erase the erase instruction forces all data bits of the speci- fied address to the logical ? 1 ? state. cs is brought low following the loading of the last address bit. this falling edge of the cs pin initiates the self-timed programming cycle. the do pin indicates the ready/busy status of the device if cs is brought high after a minimum of 250 ns low (t csl ). do at logical ? 0 ? indicates that program- ming is still in progress. do at logical ? 1 ? indicates that the register at the specified address has been erased and the device is ready for another instruction. the erase cycle takes 4 ms per word typical.
? 2004 microchip technology inc. ds21712b-page 7 93lc46/56/66 2.7 write the write instruction is followed by 16 bits (or by 8 bits) of data which are written into the specified address. after the last data bit is put on the di pin, cs must be brought low before the next rising edge of the clk clock. this falling edge of cs initiates the self-timed auto-erase and programming cycle. the do pin indicates the ready/busy status of the device if cs is brought high after a minimum of 250 ns low (t csl ) and before the entire write cycle is complete. do at logical ? 0 ? indicates that programming is still in progress. do at logical ? 1 ? indicates that the register at the specified address has been written with the data specified and the device is ready for another instruction. the write cycle takes 4 ms per word typical. 2.8 erase all ( eral ) the eral instruction will erase the entire memory array to the logical ? 1 ? state. the eral cycle is identical to the erase cycle except for the different opcode. the eral cycle is completely self-timed and commences at the falling edge of the cs. clocking of the clk pin is not necessary after the device has entered the self clocking mode. the eral instruction is ensured at 5v 10%. the do pin indicates the ready/busy status of the device if cs is brought high after a minimum of 250 ns low (t csl ) and before the entire write cycle is complete. the eral cycle takes (8 ms typical). 2.9 write all ( wral ) the wral instruction will write the entire memory array with the data specified in the command. the wral cycle is completely self-timed and commences at the falling edge of the cs. clocking of the clk pin is not necessary after the device has entered the self clock- ing mode. the wral command does include an auto- matic eral cycle for the device. therefore, the wral instruction does not require an eral instruction but the chip must be in the ewen status. the wral instruction is ensured at 5v 10%. the do pin indicates the ready/busy status of the device if cs is brought high after a minimum of 250 ns low (tcsl). the wral cycle takes 16 ms typical. figure 2-1: read timing cs clk di do 110 an a0 high-z 0 dx d0 dx d0 dx d0
93lc46/56/66 ds21712b-page 8 ? 2004 microchip technology inc. figure 2-2: ewen timing figure 2-3: ewds timing figure 2-4: write timing 1 x cs di 00 1 1 x 6 cs clk di 10 000 x x 6 cs clk di do 1 0 1 an a0 dx d0 busy ready high-z 12 6 11
2004 microchip technology inc. ds21712b-page 9 93lc46/56/66 figure 2-5: wral timing figure 2-6: erase timing figure 2-7: eral timing cs clk di do high-z 1 0 0 0 1 x x dx d0 high-z busy ready 14 ensured by characterization at v cc = 4.5v to +5.5v . 6 11 10 cs clk di do 6 check status 1 1 1 an an-1 an-2 a0 11 10 busy ready high-z 12 high-z cs clk di do 6 check status 100 10 x x 11 10 busy ready high-z 13 high-z ensured by characterization at vcc = 4.5v to +5.5v.
93lc46/56/66 ds21712b-page 10 ? 2004 microchip technology inc. 3.0 pin description the descriptions of the pins are listed in table 3-1. table 3-1: pin function table 3.1 chip select (cs) a high level selects the device. a low level deselects the device and forces it into standby mode. however, a programming cycle which is already initiated and/or in progress will be completed, regardless of the cs input signal. if cs is brought low during a program cycle, the device will go into standby mode as soon as the programming cycle is completed. cs must be low for 250 ns minimum (t csl ) between consecutive instructions. if cs is low, the internal control logic is held in a reset status. 3.2 serial clock (clk) the serial clock is used to synchronize the communica- tion between a master device and the 93lc46/56/66. opcode, address and data bits are clocked in on the positive edge of clk. data bits are also clocked out on the positive edge of clk. clk can be stopped anywhere in the transmission sequence (at high or low level) and can be continued anytime with respect to clock high time (t ckh ) and clock low time (t ckl ). this gives the controlling master freedom in preparing opcode, address and data. clk is a ?don't care? if cs is low (device deselected). if cs is high, but start condition has not been detected, any number of clock cycles can be received by the device without changing its status (i.e., waiting for start condition). clk cycles are not required during the self-timed write (i.e., auto erase/write) cycle. after detection of a start condition the specified number of clock cycles (respectively low-to-high transitions of clk) must be provided. these clock cycles are required to clock in all required opcode, address and data bits before an instruction is executed (see instruction set truth table). clk and di then become ?don't care? inputs waiting for a new start condition to be detected. 3.3 data in (di) data in is used to clock in a start bit, opcode, address and data synchronously with the clk input. 3.4 data out (do) data out is used in the read mode to output data syn- chronously with the clk input (t pd after the positive edge of clk). this pin also provides ready/busy status information during erase and write cycles. ready/busy status infor- mation is available on the do pin if cs is brought high after being low for minimum chip select low time (t csl ) and an erase or write operation has been initiated. the status signal is not available on do, if cs is held low or high during the entire write or erase cycle. in all other cases do is in the high-z mode. if status is checked after the write/erase cycle, a pull-up resistor on do is required to read the ready signal. 3.5 organization (org) when org is connected to v cc , the (x16) memory organization is selected. when org is tied to v ss , the (x8) memory organization is selected. org can only be floated for clock speeds of 1 mhz or less for the (x16) memory organization. for clock speeds greater than 1 mhz, org must be tied to v cc or v ss . name pdip soic rotated tssop description cs 1 1 3 chip select clk 2 2 4 serial data clock di 3 3 5 serial data input do 4 4 6 serial data output v ss 5 5 7 ground org 6 6 8 memory configuration nu 7 7 1 not utilized vcc 8 8 2 +1.8v to 5.5v power supply note: cs must go low between consecutive instructions.
? 2004 microchip technology inc. ds21712b-page 11 93lc46/56/66 4.0 packaging information 4.1 package marking information xxxxxxxx xxxxxnnn yyww 8-lead pdip (300 mil) example: 8-lead soic (150 mil) example: xxxxxxxx xxxxyyww nnn 93lc46 i/pnnn yyww 93lc46 i/snyyww nnn legend: xx...x customer specific information* yy year code (last 2 digits of calendar year) ww week code (week of january 1 is week ?01?) nnn alphanumeric traceability code note : in the event the full microchip part number cannot be marked on one line, it will be carried over to the next line thus limiting the number of available characters for customer specific information. * standard otp marking consists of microchip part number, year code, week code, and traceability code. 8-lead rotated soic (150 mil) example: xxxxxxxx xxxxyyww nnn 93lc46x i/snyyww nnn
93lc46/56/66 ds21712b-page 12 ? 2004 microchip technology inc. 8-lead plastic dual in-line (p) ? 300 mil (pdip) b1 b a1 a l a2 p e eb c e1 n d 1 2 units inches* millimeters dimension limits min nom max min nom max number of pins n 88 pitch p .100 2.54 top to seating plane a .140 .155 .170 3.56 3.94 4.32 molded package thickness a2 .115 .130 .145 2.92 3.30 3.68 base to seating plane a1 .015 0.38 shoulder to shoulder width e .300 .313 .325 7.62 7.94 8.26 molded package width e1 .240 .250 .260 6.10 6.35 6.60 overall length d .360 .373 .385 9.14 9.46 9.78 tip to seating plane l .125 .130 .135 3.18 3.30 3.43 lead thickness c .008 .012 .015 0.20 0.29 0.38 upper lead width b1 .045 .058 .070 1.14 1.46 1.78 lower lead width b .014 .018 .022 0.36 0.46 0.56 overall row spacing eb .310 .370 .430 7.87 9.40 10.92 mold draft angle top 51015 51015 mold draft angle bottom 51015 51015 * controlling parameter notes: dimensions d and e1 do not include mold flash or protrusions. mold flash or protrusions shall not exceed jedec equivalent: ms-001 drawing no. c04-018 .010? (0.254mm) per side. significant characteristic
? 2004 microchip technology inc. ds21712b-page 13 93lc46/56/66 8-lead plastic small outline (sn) ? narrow, 150 mil (soic) foot angle f 048048 15 12 0 15 12 0 mold draft angle bottom 15 12 0 15 12 0 mold draft angle top 0.51 0.42 0.33 .020 .017 .013 b lead width 0.25 0.23 0.20 .010 .009 .008 c lead thickness 0.76 0.62 0.48 .030 .025 .019 l foot length 0.51 0.38 0.25 .020 .015 .010 h chamfer distance 5.00 4.90 4.80 .197 .193 .189 d overall length 3.99 3.91 3.71 .157 .154 .146 e1 molded package width 6.20 6.02 5.79 .244 .237 .228 e overall width 0.25 0.18 0.10 .010 .007 .004 a1 standoff 1.55 1.42 1.32 .061 .056 .052 a2 molded package thickness 1.75 1.55 1.35 .069 .061 .053 a overall height 1.27 .050 p pitch 8 8 n number of pins max nom min max nom min dimension limits millimeters inches* units 2 1 d n p b e e1 h l c 45 f a2 a a1 * controlling parameter notes: dimensions d and e1 do not include mold flash or protrusions. mold flash or protrusions shall not exceed .010? (0.254mm) per side. jedec equivalent: ms-012 drawing no. c04-057 significant characteristic
93lc46/56/66 ds21712b-page 14 ? 2004 microchip technology inc. appendix a: revision history revision b added note to page 1 header (not recommended for new designs). updated document format.
? 2004 microchip technology inc. ds21712b-page 15 93lc46/56/66 on-line support microchip provides on-line support on the microchip world wide web site. the web site is used by microchip as a means to make files and information easily available to customers. to view the site, the user must have access to the internet and a web browser, such as netscape ? or microsoft ? internet explorer. files are also available for ftp download from our ftp site. connecting to the microchip internet web site the microchip web site is available at the following url: www.microchip.com the file transfer site is available by using an ftp service to connect to: ftp://ftp.microchip.com the web site and file transfer site provide a variety of services. users may download files for the latest development tools, data sheets, application notes, user's guides, articles and sample programs. a vari- ety of microchip specific business information is also available, including listings of microchip sales offices, distributors and factory representatives. other data available for consideration is: latest microchip press releases technical support section with frequently asked questions design tips device errata job postings microchip consultant program member listing links to other useful web sites related to microchip products conferences for products, development systems, technical information and more listing of seminars and events systems information and upgrade hot line the systems information and upgrade line provides system users a listing of the latest versions of all of microchip's development systems software products. plus, this line provides information on how customers can receive the most current upgrade kits. the hot line numbers are: 1-800-755-2345 for u.s. and most of canada, and 1-480-792-7302 for the rest of the world. 042003
93lc46/56/66 ds21712b-page 16 ? 2004 microchip technology inc. reader response it is our intention to provide you with the best documentation possible to ensure successful use of your microchip prod- uct. if you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation can better serve you, please fax your comments to the technical publications manager at (480) 792-4150. please list the following information, and use this outline to provide us with your comments about this document. to : technical publications manager re: reader response total pages sent ________ from: name company address city / state / zip / country telephone: (_______) _________ - _________ application (optional): would you like a reply? y n device: literature number: questions: fax: (______) _________ - _________ ds21712b 93lc46/56/66 1. what are the best features of this document? 2. how does this document meet your hardware and software development needs? 3. do you find the organization of this document easy to follow? if not, why? 4. what additions to the document do you think would enhance the structure and subject? 5. what deletions from the document could be made without affecting the overall usefulness? 6. is there any incorrect or misleading information (what and where)? 7. how would you improve this document?
? 2004 microchip technology inc. ds21712b-page 17 93lc46/56/66 product identification system to order or obtain information, e. g., on pricing or delivery, refer to the factory or the listed sales office . sales and support part no. x /xx xxx pattern package temperature range device device 93lc46: 1k 2.5v microwire serial eeprom 93lc46x: 1k 2.5v microwire serial eeprom in alternate pinouts (sn package only) 93lc46t: 1k 2.5v microwire serial eeprom (tape and reel) 93lc46xt: 1k 2.5v microwire serial eeprom (tape and reel) 93lc56: 2k 2.5v microwire serial eeprom 93lc56x: 2k 2.5v microwire serial eeprom in alternate pinouts (sn package only) 93lc56t: 2k 2.5v microwire serial eeprom (tape and reel) 93lc56xt:2k 2.5v microwire serial eeprom (tape and reel) 93lc66: 4k 2.5v microwire serial eeprom 93lc66x: 4k 2.5v microwire serial eeprom in alternate pinouts (sn package only) 93lc66t: 4k 2.5v microwire serial eeprom (tape and reel) 93lc66xt: 4k 2.5v microwire serial eeprom (tape and reel) temperature range i= -40 c to +85 c package p = plastic dip (300 mil body), 8-lead sn = plastic soic (150 mil body), 8-lead examples: a) 93lc46-i/p: 1k, 128x8 or 64x16 serial eeprom, pdip package b) 93lc46-i/sn: 1k, 128x8 or 64x16 serial eeprom, soic package c) 93lc46t-i/sn: 1k, 128x8 or 64x16 serial eeprom, soic package, tape and reel d) 93lc46x-i/sn: 1k, 128x8 or 64x16 serial eeprom, rotated soic package e) 93lc56-i/p: 2k, 256x8 or 128x16 serial eeprom, pdip package f) 93lc56-i/sn: 2k, 256x8 or 128x16 serial eeprom, soic package g) 93lc56t-i/sn: 2k, 256x8 or 128x16 serial eeprom, soic package, tape and reel h) 93lc56x-i/sn: 2k, 256x8 or 128x16 serial eeprom, rotated soic package i) 93lc66-i/p: 4k, 512x8 or 256x16 serial eeprom, pdip package j) 93lc66-i/sn: 4k, 512x8 or 256x16 serial eeprom, soic package k) 93lc66t-i/sn: 4k, 512x8 or 256x16 serial eeprom, soic package, tape and reel l) 93lc66x-i/sn: 4k, 512x8 or 256x16 serial eeprom, rotated soic package data sheets products supported by a preliminary data sheet may have an errata sheet describing minor operational differences and recommended workarounds. to determine if an errata sheet exists for a particular device, please contact one of the following: 1. your local microchip sales office 2. the microchip corporate literature center u.s. fax: (480) 792-7277 3. the microchip worldwide site (www.microchip.com) please specify which device, revision of silicon and data sheet (include literature #) you are using. new customer notification system register on our web site (www.microchip.com/cn) to receive the most current information on our products.
93lc46/56/66 ds21712b-page 18 ? 2004 microchip technology inc. notes:
? 2004 microchip technology inc. ds21712b-page 19 information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. it is your responsibility to ensure that your application m eets with your specifications. no representation or warranty is given and no liability is assumed by microchip technol ogy incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. use of micr ochip?s products as critical components in life support syst ems is not authorized except with express written approval by microchip. no licenses are conveyed, implicitly or ot herwise, under any intellectual property rights. trademarks the microchip name and logo, the microchip logo, accuron, dspic, k ee l oq , micro id , mplab, pic, picmicro, picstart, pro mate, powersmart, rfpic, and smartshunt are registered trademarks of micr ochip technology incorporated in the u.s.a. and other countries. amplab, filterlab, mxdev, mxlab, picmaster, seeval, smartsensor and the embedded control solutions company are registered trademarks of microchip technology incorporated in the u.s.a. analog-for-the-digital age, app lication maestro, dspicdem, dspicdem.net, dspicworks, ecan, economonitor, fansense, flexrom, fuzzylab, in-circuit serial programming, icsp, icepic, migratable memory, mpasm, mplib, mplink, mpsim, pickit, picdem, picdem.net, piclab, pictail, powercal, powerinfo, powermate, powertool, rflab, rfpicdem, select mode, smart serial, smarttel and total endurance ar e trademarks of microchip technology incorporated in the u.s.a. and other countries. sqtp is a service mark of mi crochip technology incorporated in the u.s.a. all other trademarks mentioned herein are property of their respective companies. ? 2004, microchip technology incorporated, printed in the u.s.a., all rights reserved. printed on recycled paper. note the following details of the code protection feature on microchip devices: microchip products meet the specification cont ained 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 produc ts in a manner outside the operating specif ications contained in microchip?s 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 semiconduc tor 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 co mmitted to continuously improvin g the code protection features of our products. attempts to break microchip?s 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. microchip received iso/ts-16949:2002 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in chandler and tempe, arizona and mountain view, california in october 2003. the company?s quality system processes and procedures are for its picmicro ? 8-bit mcus, k ee l oq ? code hopping devices, serial eeproms, microperipherals, nonvolatile memory and analog products. in addition, microchip?s quality system for the design and manufacture of development systems is iso 9001:2000 certified.
ds21712b-page 20 ? 2004 microchip technology inc. americas corporate office 2355 west chandler blvd. chandler, az 85224-6199 tel: 480-792-7200 fax: 480-792-7277 technical support: 480-792-7627 web address: www.microchip.com atlanta 3780 mansell road, suite 130 alpharetta, ga 30022 tel: 770-640-0034 fax: 770-640-0307 boston 2 lan drive, suite 120 westford, ma 01886 tel: 978-692-3848 fax: 978-692-3821 chicago 333 pierce road, suite 180 itasca, il 60143 tel: 630-285-0071 fax: 630-285-0075 dallas 16200 addison road, suite 255 addison plaza addison, tx 75001 tel: 972-818-7423 fax: 972-818-2924 detroit tri-atria office building 32255 northwestern highway, suite 190 farmington hills, mi 48334 tel: 248-538-2250 fax: 248-538-2260 kokomo 2767 s. albright road kokomo, in 46902 tel: 765-864-8360 fax: 765-864-8387 los angeles 25950 acero st., suite 200 mission viejo, ca 92691 tel: 949-462-9523 fax: 949-462-9608 san jose 1300 terra bella avenue mountain view, ca 94043 tel: 650-215-1444 fax: 650-961-0286 toronto 6285 northam drive, suite 108 mississauga, ontario l4v 1x5, canada tel: 905-673-0699 fax: 905-673-6509 asia/pacific australia microchip technology australia pty ltd unit 32 41 rawson street epping 2121, nsw sydney, australia tel: 61-2-9868-6733 fax: 61-2-9868-6755 china - beijing unit 706b wan tai bei hai bldg. no. 6 chaoyangmen bei str. beijing, 100027, china tel: 86-10-85282100 fax: 86-10-85282104 china - chengdu rm. 2401-2402, 24th floor, ming xing financial tower no. 88 tidu street chengdu 610016, china tel: 86-28-86766200 fax: 86-28-86766599 china - fuzhou unit 28f, world trade plaza no. 71 wusi road fuzhou 350001, china tel: 86-591-7503506 fax: 86-591-7503521 china - hong kong sar unit 901-6, tower 2, metroplaza 223 hing fong road kwai fong, n.t., hong kong tel: 852-2401-1200 fax: 852-2401-3431 china - shanghai room 701, bldg. b far east international plaza no. 317 xian xia road shanghai, 200051 tel: 86-21-6275-5700 fax: 86-21-6275-5060 china - shenzhen rm. 1812, 18/f, building a, united plaza no. 5022 binhe road, futian district shenzhen 518033, china tel: 86-755-82901380 fax: 86-755-8295-1393 china - shunde room 401, hongjian building, no. 2 fengxiangnan road, ronggui town, shunde district, foshan city, guangdong 528303, china tel: 86-757-28395507 fax: 86-757-28395571 china - qingdao rm. b505a, fullhope plaza, no. 12 hong kong central rd. qingdao 266071, china tel: 86-532-5027355 fax: 86-532-5027205 india divyasree chambers 1 floor, wing a (a3/a4) no. 11, o?shaugnessey road bangalore, 560 025, india tel: 91-80-22290061 fax: 91-80-22290062 japan yusen shin yokohama building 10f 3-17-2, shin yokohama, kohoku-ku, yokohama, kanagawa, 222-0033, japan tel: 81-45-471- 6166 fax: 81-45-471-6122 korea 168-1, youngbo bldg. 3 floor samsung-dong, kangnam-ku seoul, korea 135-882 tel: 82-2-554-7200 fax: 82-2-558-5932 or 82-2-558-5934 singapore 200 middle road #07-02 prime centre singapore, 188980 tel: 65-6334-8870 fax: 65-6334-8850 taiwan kaohsiung branch 30f - 1 no. 8 min chuan 2nd road kaohsiung 806, taiwan tel: 886-7-536-4816 fax: 886-7-536-4817 taiwan taiwan branch 11f-3, no. 207 tung hua north road taipei, 105, taiwan tel: 886-2-2717-7175 fax: 886-2-2545-0139 taiwan taiwan branch 13f-3, no. 295, sec. 2, kung fu road hsinchu city 300, taiwan tel: 886-3-572-9526 fax: 886-3-572-6459 europe austria durisolstrasse 2 a-4600 wels austria tel: 43-7242-2244-399 fax: 43-7242-2244-393 denmark regus business centre lautrup hoj 1-3 ballerup dk-2750 denmark tel: 45-4420-9895 fax: 45-4420-9910 france parc d?activite du moulin de massy 43 rue du saule trapu batiment a - ler etage 91300 massy, france tel: 33-1-69-53-63-20 fax: 33-1-69-30-90-79 germany steinheilstrasse 10 d-85737 ismaning, germany tel: 49-89-627-144-0 fax: 49-89-627-144-44 italy via salvatore quasimodo, 12 20025 legnano (mi) milan, italy tel: 39-0331-742611 fax: 39-0331-466781 netherlands waegenburghtplein 4 nl-5152 jr, drunen, netherlands tel: 31-416-690399 fax: 31-416-690340 united kingdom 505 eskdale road winnersh triangle wokingham berkshire, england rg41 5tu tel: 44-118-921-5869 fax: 44-118-921-5820 07/12/04 w orldwide s ales and s ervice

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