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cy6264 8 k 8 static ram cypress semiconductor corporation ? 198 champion court ? san jose , ca 95134-1709 ? 408-943-2600 document number: 001-02367 rev. *d revised september 13, 2013 8 k 8 static ram features temperature ranges: ? commercial: 0 c to 70 c ? industrial: ?40 c to 85 c ? automotive-a: ?40 c to 85 c high speed ? 55 ns cmos for optimum speed/power easy memory expansion with ce 1 , ce 2 and oe features ttl-compatible inputs and outputs automatic power-down when deselected available in pb-free 28-pin snc package functional description the cy6264 is a high-performance cmos static ram organized as 8192 words by 8 bits. easy memory expansion is provided by an active low chip enable (ce 1 ), an active high chip enable (ce 2 ), and active low output enable (oe ) and three-state drivers. both devices have an automatic power-down feature (ce 1 ), reducing the power consumption by over 70% when deselected. the cy6264 is packaged in a 450-mil (300-mil body) soic. an active low write enable signal (we ) controls the writing/reading operation of the memory. when ce 1 and we inputs are both low and ce 2 is high, data on the eight data input/output pins (i/o 0 through i/o 7 ) is written into the memory location addressed by the address present on the address pins (a 0 through a 12 ). reading the device is accomplished by selecting the device and enabling the outputs, ce 1 and oe active low, ce 2 active high, while we remains inactive or high. under these conditions, the contents of the location addressed by the information on address pins is present on the eight data input/output pins. the input/output pins remain in a high-impedance state unless the chip is selected, outputs are enabled, and write enable (we ) is high. a die coat is used to ensure alpha immunity. logic block diagram
cy6264 document number: 001-02367 rev. *d page 2 of 15 contents pin configuration ............................................................. 3 selection guide ................................................................ 3 maximum ratings ............................................................. 4 operating range ............................................................... 4 electrical characteristics ................................................. 4 capacitance ...................................................................... 5 ac test loads and waveforms ....................................... 5 switching characteristics ................................................ 6 switching waveforms ...................................................... 7 typical dc and ac characteristics ................................ 9 truth table ...................................................................... 10 address designators ..................................................... 10 ordering information ...................................................... 11 ordering code definitions ........................................ 11 package diagram ............................................................ 12 acronyms ........................................................................ 13 document conventions ................................................. 13 units of measure ....................................................... 13 document history page ................................................. 14 sales, solutions, and legal information ...................... 15 worldwide sales and design s upport ......... .............. 15 products .................................................................... 15 psoc? solutions ...................................................... 15 cypress developer community ................................. 15 technical support ................. .................................... 15
cy6264 document number: 001-02367 rev. *d page 3 of 15 pin configuration figure 1. 28-pin soic pinout (top view) selection guide description range -55 -70 unit maximum access time 55 70 ns maximum operating current commercial 100 100 ma industrial 260 200 ma automotive-a ? 200 ma maximum cmos standby current commercial 15 15 ma industrial 30 30 ma automotive-a ? 30 ma
cy6264 document number: 001-02367 rev. *d page 4 of 15 maximum ratings exceeding maximum ratings may shorten the useful life of the device. user guidelines are not tested. storage temperature ..... ............ ............... ?65 ? c to +150 ? c ambient temperature with power applied .... .............. .............. .......... ?55 ? c to +125 ? c supply voltage to ground potential ..............?0.5 v to +7.0 v dc voltage applied to outputs in high z state [1] ..........................................?0.5 v to +7.0 v dc input voltage [1] ......................................?0.5 v to +7.0 v output current into outputs (low) ............................. 20 ma static discharge voltage (per mil-std-883, method 3015) .............. ........... > 2001 v latch-up current ................................................... > 200 ma operating range range ambient temperature v cc commercial 0 ? c to +70 ? c 5 v ? 10% industrial ?40 ? c to +85 ? c automotive-a ?40 ? c to +85 ? c electrical characteristics over the operating range parameter description test conditions -55 -70 unit min max min max v oh output high voltage v cc = min, i oh = ?4.0 ma 2.4 ? 2.4 ? v v ol output low voltage v cc = min, i ol = 8.0 ma ? 0.4 ? 0.4 v v ih input high voltage 2.2 v cc 2.2 v cc v v il input low voltage [1] ?0.5 0.8 ?0.5 0.8 v i ix input leakage current gnd ? v i ?? v cc ?5 +5 ?5 +5 ? a i oz output leakage current gnd ? v i ? v cc , output disabled ?5 +5 ?5 +5 ? a i cc v cc operating supply current v cc = max, i out = 0 ma commercial ? 100 ? 100 ma industrial ? 260 ? 200 automotive-a ? ? 200 i sb1 automatic ce 1 power-down current max v cc , ce 1 ?? v ih , min duty cycle =100% commercial ? 20 ? 20 ma industrial ? 50 ? 40 automotive-a ? ? 40 i sb2 automatic ce 1 power-down current max v cc , ce 1 ? v cc ? 0.3 v, v in ? v cc ? 0.3 v or v in ? 0.3 v commercial ? 15 ? 15 ma industrial ? 30 ? 30 automotive-a ? ? 30 note 1. minimum voltage is equal to ?3.0 v for pulse durations less than 30 ns.
cy6264 document number: 001-02367 rev. *d page 5 of 15 capacitance parameter [2] description test conditions max unit c in input capacitance t a = 25 ? c, f = 1 mhz, v cc = 5.0 v 7 pf c out output capacitance 7pf ac test loads and waveforms figure 2. ac test loads and waveforms r1 481 ?? 3.0 v 5 v output r1 481 ?? r2 255 ?? 30 pf gnd 90% 90% 10% ? 5ns ?? 5 ns 5 v output r2 255 ?? 5 pf (a) (b) output 1.73 v including jig and scope including jig and scope 10% equivalent to: thevenin equivalent all input pulses 167 ?? 2. tested initially and after any design or proces s changes that may affect these parameters.
cy6264 document number: 001-02367 rev. *d page 6 of 15 switching characteristics over the operating range parameter [3] description -55 -70 unit min max min max read cycle t rc read cycle time 55 ? 70 ? ns t aa address to data valid ? 55 ? 70 ns t oha data hold from address change 5 5 ? ns t ace1 ce 1 low to data valid ? 55 ? 70 ns t ace2 ce 2 high to data valid ? 40 ? 70 ns t doe oe low to data valid ? 25 ? 35 ns t lzoe oe low to low z 3 5 ? ns t hzoe oe high to high z [4] ? 20 ? 30 ns t lzce1 ce 1 low to low z [5] 5 ? 5 ? ns t lzce2 ce 2 high to low z 3 ? 5 ? ns t hzce ce 1 high to high z [4, 6] ce 2 low to high z ? 20 ? 30 ns t pu ce 1 low to power-up 0 ? 0 ? ns t pd ce 1 high to power-down ? 25 ? 30 ns write cycle [6] t wc write cycle time 50 ? 70 ? ns t sce1 ce 1 low to write end 40 ? 60 ? ns t sce2 ce 2 high to write end 30 ? 50 ? ns t aw address setup to write end 40 ? 55 ? ns t ha address hold from write end 0 ? 0 ? ns t sa address setup to write start 0 ? 0 ? ns t pwe we pulse width 25 ? 40 ? ns t sd data setup to write end 25 ? 35 ? ns t hd data hold from write end 0 ? 0 ? ns t hzwe we low to high z [4] ? 20 ? 30 ns t lzwe we high to low z 5 ? 5 ? ns notes 3. test conditions assume signal transition time of 5 ns or less, ti ming reference levels of 1.5 v, input pulse levels of 0 to 3 .0 v, and output loading of the specified i ol /i oh and 30-pf load capacitance. 4. t hzoe, t hzce , and t hzwe are specified with c l = 5 pf as in part (b) of ac test loads. transition is measured ? 500 mv from steady-state voltage. 5. at any temperature and voltage condition, t hzce is less than t lzce for any device. 6. the internal write time of the memory is defined by the overlap of ce 1 low, ce 2 high, and we low. both signals must be low to initiate a write and either signal can terminate a write by going high. the data input setup and hol d timing should be referenced to the rising edge of the signal that terminates the write.
cy6264 document number: 001-02367 rev. *d page 7 of 15 switching waveforms figure 3. read cycle no. 1 [7, 8] figure 4. read cycle no. 2 [9, 10] address data out previous data valid data valid t rc t aa t oha 50% 50% data valid t rc t ace t doe t lzoe t lzce t pu high impedance impedance icc isb t hzoe t hzce t pd oe high data out v cc supply current ce 1 oe ce 2 notes 7. device is continuously selected. oe , ce = v il . ce 2 = v ih. 8. address valid prior to or coincident with ce transition low. 9. we is high for read cycle. 10. data i/o is high z if oe = v ih , ce 1 = v ih , or we = v il .
cy6264 document number: 001-02367 rev. *d page 8 of 15 figure 5. write cycle no. 1 (we controlled) [11, 12] figure 6. write cycle no. 2 (ce controlled) [11, 12, 13] switching waveforms (continued) data undefined high impedance t hd t hzwe t sd t lzwe t pwe t sa t ha t aw t sce2 t sce1 t wc data in data i/o address ce 1 oe we ce 2 data in valid t wc data undefined high impedance t aw t sa t pwe t ha t hd t hzwe t sd ce 2 we data in data i/o address t sce2 t sce1 ce 1 data in valid notes 11. address valid prior to or coincident with ce transition low. 12. data i/o is high z if oe = v ih , ce 1 = v ih , or we = v il . 13. if ce goes high simultaneously with we high, the output remains in a high-impedance state.
cy6264 document number: 001-02367 rev. *d page 9 of 15 typical dc and ac characteristics ? 55 25 125 1.2 1.0 0.8 output source current (ma) ambient temperature (c) 0.6 0.4 0.2 0.0 i sb v cc =5.0 v v in =5.0 v i cc 1.2 1.4 1.0 0.6 0.4 0.2 4.0 4.5 5.0 5.5 6.0 1.6 1.4 1.2 1.0 0.8 ? 55 25 125 normalized t aa 120 100 80 60 40 20 0.0 1.0 2.0 3.0 4.0 supply voltage (v) normalized supply current vs. supply voltage normalized access time vs. ambient temperature ambient temperature (c) normalized supply current vs. ambient temperature output voltage (v) output source current vs. output voltage 0.0 0.8 1.4 1.3 1.2 1.1 1.0 0.9 4.0 4.5 5.0 5.5 6.0 normalized t aa supply voltage (v) normalized access time vs. supply voltage 120 140 100 60 40 20 0.0 1.0 2.0 3.0 4.0 output sink current (ma) 0 80 output voltage (v) output sink current vs.output voltage i cc v cc =5.0 v v cc =5.0 v t a =25c v cc =5.0 v t a =25c i sb t a =25c 0.6 0.8 0 3.0 2.5 2.0 1.5 1.0 0.5 0.0 1.0 2.0 3.0 4.0 normalized i po supply voltage(v) typical power-on current vs. supply voltage 30.0 25.0 20.0 15.0 10.0 5.0 0 200 400 600 800 delta t (ns) aa capacitance (pf) typical access time change vs. output loading 1.25 1.00 0.75 10 20 30 40 normalized i cc cycle frequency (mhz) normalized i cc vs. cycle time 0.0 5.0 0.0 1000 0.50 v cc =4.5 v t a =25c v cc =5.0 v t a =25c v cc =0.5 v normalized i cc , i sb normalized i cc , i sb
cy6264 document number: 001-02367 rev. *d page 10 of 15 truth table ce 1 ce 2 we oe input/output mode h x x x high z deselect/power-down x l x x high z deselect l h h l data out read l h l x data in write l h h h high z deselect address designators address name address function pin number a4 x3 2 a5 x4 3 a6 x5 4 a7 x6 5 a8 x7 6 a9 y1 7 a10 y4 8 a11 y3 9 a12 y0 10 a0 y2 21 a1 x0 23 a2 x1 24 a3 x2 25
cy6264 document number: 001-02367 rev. *d page 11 of 15 ordering information ta b l e 1 lists the cy6264 key package features and ordering codes. the table contains only the parts that are currently available. if you do not see what you are looking for, contact your local sa les representative. for more information, visit the cypress websi te at www.cypress.com and see the product summary page at http://www.cypress.com/products . ordering code definitions table 1. static ram key features and ordering information speed (ns) ordering code package diagram package type operating range 55 CY6264-55SNXI 51-85092 28-pin snc (300 mils) narrow body (pb-free) industrial 70 cy6264-70snxc 51-85092 28-pin snc (300 mils) narrow body (pb-free) commercial cy6264-70snxa 28-pin snc (300 mils) narrow body (pb-free) automotive-a temperature grade: x = i or c or a i = industrial = ?40 c to +85 c ; c = commercial = 0 c to +70 c; a = automotive-a = ?40 c to +85 c package type: snx = 28-pin snc (pb-free) speed grade: xx = 55 ns or 70 ns density: 64-kbit family code: mobl sram family company id: cy = cypress -xx x snx cy 64 62
cy6264 document number: 001-02367 rev. *d page 12 of 15 package diagram figure 7. 28-pin snc (300 mils) sn28.3 (narrow body) package outline, 51-85092 51-85092 *e
cy6264 document number: 001-02367 rev. *d page 13 of 15 acronyms document conventions units of measure acronym description cmos complementary metal oxide semiconductor i/o input/output sram static random access memory tsop thin small outline package vfbga very fine-pitch ball grid array symbol unit of measure c degrees celsius mhz megahertz ? a microampere ma milliampere ns nanosecond ? ohm pf picofarad v volt w watt
cy6264 document number: 001-02367 rev. *d page 14 of 15 document history page document title: cy6264, 8 k 8 static ram document number: 001-02367 revision ecn orig. of change submission date description of change ** 384870 pci 06/28/05 spec # change from 38-00425 to 001-02367 *a 488954 vkn see ecn added automotive product added 55 ns industrial spec removed soic package from the product offering changed the description of i ix from input load current to input leakage current in dc electrical characteristics table removed i os parameter from dc electrical characteristics table updated ordering information table *b 2892510 vkn see ecn updated ordering information table updated package diagram added sales, solutions, and legal information *c 3329873 rame 07/27/11 updated template and styl es according to current cypress standards. added acronyms, units, and ordering code definitions. removed reference to an1064 sram system guidelines. *d 4122787 vini 09/13/2013 updated package diagram : spec 51-85092 ? changed revision from *c to *e. updated in new template. completing sunset review.
document number: 001-02367 rev. *d revised september 13, 2013 page 15 of 15 all products and company names mentioned in this document may be the trademarks of their respective holders. cy6264 ? cypress semiconductor corporation, 2005-2013. the information contained herein is subject to change without notice. cypress s emiconductor corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a cypress product. nor does it convey or imply any license under patent or other rights. cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement wi th cypress. furthermore, cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. the inclusion of cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. any source code (software and/or firmware) is owned by cypress semiconductor corporation (cypress) and is protected by and subj ect to worldwide patent protection (united states and foreign), united states copyright laws and internatio nal treaty provisions. cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the cypress source code and derivative works for the sole purpose of creating custom software and or firmware in su pport of licensee product to be used only in conjunction with a cypress integrated circuit as specified in the applicable agreement. any reproduction, modification, translation, compilation, or repre sentation of this source code except as specified above is prohibited without the express written permission of cypress. disclaimer: cypress makes no warranty of any kind, express or implied, with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. cypress reserves the right to make changes without further notice to t he materials described herein. cypress does not assume any liability arising out of the application or use of any product or circuit described herein. cypress does not authori ze its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. the inclusion of cypress? prod uct in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. use may be limited by and subject to the applicable cypress software license agreement. sales, solutions, and legal information worldwide sales and design support cypress maintains a worldwide network of offices, solution center s, manufacturer?s representatives, and distributors. to find t he office closest to you, visit us at cypress locations . products automotive cypress.co m/go/automotive clocks & buffers cypress.com/go/clocks interface cypress. com/go/interface lighting & power control cypress.com/go/powerpsoc cypress.com/go/plc memory cypress.com/go/memory psoc cypress.com/go/psoc touch sensing cyp ress.com/go/touch usb controllers cypress.com/go/usb wireless/rf cypress.com/go/wireless psoc ? solutions psoc.cypress.com/solutions psoc 1 | psoc 3 | psoc 4 | psoc 5lp cypress developer community community | forums | blogs | video | training technical support cypress.com/go/support

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