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8kx8 power-switched and reprogrammable prom cy7c266 cypress semiconductor corporation ? 3901 north first street san jose ca 95134 408-943-2600 document #: 38-04005 rev. ** revised march 4, 2002 66 features cmos for optimum speed/power windowed for reprogrammability high speed ? 20 ns (commercial) ? 25 ns (military) low power ? 660 mw (commercial) ? 770 mw (military) super low standby power ? less than 85 mw when deselected eprom technology 100% programmable 5v 10% v cc , commercial and military ttl-compatible i/o direct replacement for 27c64 eproms functional description the cy7c266 is a high-performance 8192 word by 8 bit cmos prom. when deselected, the cy7c266 automatically powers down into a low-power standby mode. it is packaged in a 600-mil-wide package. the reprogrammable packages are equipped with an erasure window; when exposed to uv light, these proms are erased and can then be repro- grammed. the memory cells utilize proven eprom float- ing-gate technology and byte-wide intelligent programming al- gorithms. the cy7c266 is a plug-in replacement for eprom devices. the eprom cell requires only 12.5v for the super voltage and low-current requirements allow for gang programming. the eprom cells allow for each memory location to be tested 100%, as each location is written into, erased, and repeatedly exercised prior to encapsulation. each prom is also tested for ac performance to guarantee that after customer program- ming, the product will meet dc and ac specification limits. reading is accomplished by placing an active low signal on oe and ce . the contents of the memory location addressed by the address lines (a 0 through a 12 ) will become available on the output lines (o 0 through o 7 ). logic block diagram pin configurations 1 2 3 4 5 6 7 8 9 10 11 12 16 17 18 19 20 24 23 22 21 13 14 25 28 27 26 top view cerdip v cc a 12 a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 0 o 0 o 1 o 2 gnd v cc v cc nc a 8 a 9 a 11 oe a 10 ce o 7 o 6 o 4 o 5 o 3 a 0 a 1 a 7 a 2 a 3 a 4 a 5 a 6 a 8 a 9 a 10 a 11 a 12 power down o 7 o 6 o 5 o 4 o 3 o 2 o 1 o 0 ce oe programmable array multiplexer column address 12 o 0 31 4 5 6 7 8 9 10 32 1 30 13 14151617 26 25 24 23 22 21 11 a 7 v cc a 6 a 5 a 4 a 3 a 2 a 1 a 0 ce a 9 a 11 nc a 10 o 7 o 6 o 4 gnd top view lcc a 8 oe a 12 v cc o 3 o 2 o 1 181920 27 28 29 32 nc nc nc o 5 nc v cc 15 7c266 7c266 address decoder row address
cy7c266 document #: 38-04005 rev. ** page 2 of 11 maximum ratings (above which the useful life may be impaired. for user guide- lines, not tested.) storage temperature ................................. ? 65 c to +150 c ambient temperature with power applied............................................. ? 55 c to +125 c supply voltage to ground potential (pin 28 to pin 14) ........................................... ? 0.5v to +7.0v dc voltage applied to outputs in high z state ............................................... ? 0.5v to +7.0v dc input voltage............................................ ? 3.0v to +7.0v dc program voltage .....................................................13.0v static discharge voltage .......................................... > 2001v (per mil-std-883, method 3015) latch-up current.................................................... > 200 ma uv exposure ................................................ 7258 wsec/cm 2 selection guide 7c266-20 7c266-25 7c266-35 7c266-45 maximum access time (ns) 20 25 35 45 maximum operating current (ma) commercial 120 120 100 100 military 140 120 maximum standby current (ma) commercial 15 15 15 15 military 15 15 operating range range ambient temperature v cc commercial 0 c to +70 c 5v 10% industrial [1] ? 40 c to +85 c 5v 10% military [2] ? 55 c to +125 c 5v 10% electrical characteristics over the operating range [3,4] parameter description test conditions 7c266-20 7c266-25 unit min. max. min. max. v oh output high voltage v cc = min., i oh = ? 2.0 ma com ? l 2.4 2.4 v mil 2.4 v ol output low voltage v cc = min., i ol = 8.0 ma com ? l 0.4 0.4 v v cc = min., i ol = 6.0 ma mil 0.4 v ih input high voltage 2.0 2.0 v v il input low voltage 0.8 0.8 v i ix input current gnd < v in < v cc ? 10 +10 ? 10 +10 a v cd input diode clamp voltage note 5 i oz output leakage current v ol < v out < v oh , output disabled ? 40 +40 ? 40 +40 a i os output short circuit current [5] v cc = max., v out = gnd ? 20 ? 90 ? 20 ? 90 ma i cc power supply current v cc = max., v in = 2.0v, i out = 0 ma com ? l 120 120 ma mil 140 i sb standby supply current chip enable inactive, ce > v ih , i out = 0 ma com ? l 15 15 ma mil 15 notes: 1. contact a cypress representative regarding industrial temperature range specification. 2. t a is the ? instant on ? case temperature. 3. see the last page of this specification for group a subgroup testing information. 4. see the ? introduction to cmos proms ? section of the cypress data book for general information on testing. 5. for test purposes, not more than one output at a time should be shorted. short circuit test duration should not exceed 30 sec onds.
cy7c266 document #: 38-04005 rev. ** page 3 of 11 electrical characteristics over the operating range [3,4] (continued) parameter description test conditions 7c266-35 7c266-45 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 = 16.0 ma 0.4 0.4 v v ih input high voltage 2.0 2.0 v v il input low voltage 0.8 0.8 v i ix input current gnd < v in < v cc ? 10 +10 ? 10 +10 a v cd input diode clamp voltage note 5 i oz output leakage current v ol < v out < v oh , output disabled ? 10 +10 ? 10 +10 a i os output short circuit current [5] v cc = max., v out = gnd ? 20 ? 90 ? 20 ? 90 ma i cc power supply current v cc = max., v in = 2.0v, i out = 0 ma com ? l 100 100 ma mil 120 i sb standby supply current chip enable inactive, ce > v ih , i out = 0 ma com ? l 15 15 ma mil 15 capacitance [4] parameter description test conditions max. unit c in input capacitance t a = 25 c, f = 1 mhz, v cc = 5.0v 10 pf c out output capacitance 10 pf
cy7c266 document #: 38-04005 rev. ** page 4 of 11 erasure characteristics wavelengths of light less than 4000 angstroms begin to erase the devices in the windowed package. for this reason, an opaque label should be placed over the window if the eprom is exposed to sunlight or fluorescent lighting for extended pe- riods of time. the recommended dose of ultraviolet light for erasure is a wavelength of 2537 angstroms for a minimum dose (uv inten- sity multiplied by exposure time) of 25 wsec/cm2. for an ultra- ac test loads and waveforms r2 333 ? (403 ? mil) 3.0v 5v output r1 500 (658 ? mil) 30 pf including jig and scope gnd 90% 10% 90% 10% <5ns <5 ns 5v output 5pf including jig and scope (a) normalload (b) highz load output r th 200 5v output 5v output r1250 ? 30pf including jig and scope 5pf including jig and scope (c) normal load (d) high z load output 2.0v r th 100 ? r1 250 ? r1 500 ? (658 ? mil) r2 333 ? (403 ? mil) r2167 ? r2167 ? 250 mil test load for -20 through -25 speeds test load for -35 through -45 speeds equivalent to: th venin equivalent equivalent to: th venin equivalent switching characteristics over the operating range [2,3,4] parameter description 7c266-20 7c266-25 7c266 ? 35 7c266-45 unit min. max. min. max. min. max. min. max. t aa address to output valid 20 25 35 45 ns t hzce chip enable inactive to high z 25 30 40 45 ns t hzoe output enable inactive to high z 12 12 20 20 ns t aoe output enable active to output valid 12 12 20 20 ns t ace chip enable active to output valid 25 30 40 45 ns t oha data hold from address change 3 3 3 3 ns t pu chip enable active to power-up 25 30 40 45 ns t pd chip enable inactive to power-down 25 30 40 45 ns
cy7c266 document #: 38-04005 rev. ** page 5 of 11 violet lamp with a 12 mw/cm 2 power rating, the exposure time would be approximately 35 minutes. the cy7c266 needs to be within 1 inch of the lamp during erasure. permanent damage may result if the eprom is exposed to high-intensity uv light for an extended period of time. 7258 wsec/cm2 is the recommended maximum dosage. programming modes programming support is available from cypress as well as from a number of third party software vendors. for detailed programming information, including a listing of software pack- ages, please see the prom programming information located at the end of this section. programming algorithms can be ob- tained from any cypress representative. table 1. mode selection mode pin function [6, 7] normal operation a 8 a 9 a 10 a 11 a 12 ce oe d 7 ? d 0 program vfy pgm lat na na ce v pp d 7 ? d 0 read a 8 a 9 a 10 a 11 a 12 v il v il o 7 ? o 0 standby x x x x x v ih x three ? stated output disable a 8 a 9 a 10 a 11 a 12 v il v ih three ? stated program v ihp v ilp v ilp v ilp v ilp v ilp v pp d 7 ? d 0 program verify v ilp v ihp v ilp v ilp v ilp v ilp v pp o 7 ? o 0 program inhibit v ihp v ihp v ilp v ilp v ilp v ilp v pp three ? stated blank check v ilp v ihp v ilp v ilp v ilp v ilp v pp o 7 ? o 0 notes: 6. x = ? don ? t care ? but must not exceed v cc + 5%. 7. address a 8 ? a 12 must be latched through lines a 0 ? a 4 in programming modes. figure 1. programming pinout 1 2 3 4 5 6 7 8 9 10 11 12 16 17 18 19 20 24 23 22 21 13 14 25 28 27 26 nc na a 7 a 6 a 5 a 4 /a 12 a 3 /a 11 a 2 /a 10 a 1 /a 9 a 0 /a 8 d 0 d 1 d 2 v ss v pp nc nc vfy pgm na v pp ce d 7 d 6 d 4 d 5 d 3 12 d 0 31 4 5 6 7 8 9 10 32 1 30 13 14151617 26 25 24 23 22 21 11 a 7 v cc a 6 a 5 a 4 /a 12 a 3 /a 11 a 2 /a 1 0 a 1 /a 9 a 0 /a 8 ce pgm na nc lat d 7 d 6 d 4 vfy v cc d 3 d 2 d 1 181920 27 28 29 32 nc nc nc d 5 nc v cc 15 na v pp v ss lat cerdip lcc/plcc top view top view 7c266 7c266
cy7c266 document #: 38-04005 rev. ** page 6 of 11 typical dc and ac characteristics typical access time change vs. output loading 1.4 1.6 1.0 0.8 4.0 4.5 5.0 5.5 6.0 ? 55 25 125 1.2 1.1 1.2 1.0 0.8 0.6 4.0 4.5 5.0 5.5 6.0 normalized access time supply voltage(v) normalized supply current vs. supply voltage normalized supply current vs. ambient temperature ambient temperature( c) supply voltage(v) normalized access time vs. supply voltage 0.6 1.2 1.6 1.4 1.2 1.0 0.8 -55 125 ambient temperature ( c) normalized access time vs. temperature 150 175 125 75 50 25 0.0 1.0 2.0 3.0 output sink current (ma) 0 100 output voltage (v) output sink current vs. output voltage 1.0 0.9 0.8 normalized i cc normalized i cc v cc =5.0v t a =25 c t a =25 c 0.6 0.4 60 50 40 30 20 10 01.0 2.03.0 output source current (ma) output voltage (v) 30 25 20 15 10 5 0 200 400 600 800 delta t (ns) aa capacitance (pf) 4.0 1000 v cc =4.5v t a =25 c t a =25 c f= f max 25 0 output source current vs. voltage 4.0 1.00 1.05 0.95 0.85 0.80 0.75 025 5075 100 0.70 0.90 normalized supply current vs. cycle period cycle period (ns) normalized i cc v cc =5.5v t a =25 c 0 35 normalized access time
cy7c266 document #: 38-04005 rev. ** page 7 of 11 military specifications group a subgroup testing ordering information [8] speed (ns) ordering code package name package type operating range 20 cy7c266 ? 20pc p15 28-lead (600-mil) molded dip commercial cy7c266 ? 20wc w16 28-lead (600-mil) windowed cerdip 25 cy7c266 ? 25pc p15 28-lead (600-mil) molded dip commercial cy7c266 ? 25wc w16 28-lead (600-mil) windowed cerdip cy7c266 ? 25dmb d16 28-lead (600-mil) cerdip military cy7c266 ? 25lmb l55 32-pin rectangular leadless chip carrier cy7c266 ? 25qmb q55 32-pin windowed rectangular leadless chip carrier cy7c266 ? 25wmb w16 28-lead (600-mil) windowed cerdip 35 cy7c266 ? 35pc p15 28-lead (600-mil) molded dip commercial cy7c266 ? 35wc w16 28-lead (600-mil) windowed cerdip 45 cy7c266 ? 45pc p15 28-lead (600-mil) molded dip commercial cy7c266 ? 45wc w16 28-lead (600-mil) windowed cerdip cy7c266 ? 45dmb d16 28-lead (600-mil) cerdip military cy7c266 ? 45lmb l55 32-pin rectangular leadless chip carrier cy7c266 ? 45qmb q55 32-pin windowed rectangular leadless chip carrier cy7c266 ? 45wmb w16 28-lead (600-mil) windowed cerdip note: 8. most of these products are available in industrial temperature range. contact a cypress representative for specifications and product availability. dc characteristics parameter subgroups v oh 1, 2, 3 v ol 1, 2, 3 v ih 1, 2, 3 v il 1, 2, 3 i ix 1, 2, 3 i oz 1, 2, 3 i cc 1, 2, 3 i sb 1, 2, 3 switching characteristics parameter subgroups t aa 7, 8, 9, 10, 11 t aoe 7, 8, 9, 10, 11 t ace 7, 8, 9, 10, 11
cy7c266 document #: 38-04005 rev. ** page 8 of 11 package diagrams 28-lead (600-mil) cerdip d16 mil-std-1835 d- 10 config. a 51-80019 32-pin rectangular leadless chip carrier l55 mil-std-1835 c-12 51-80068
cy7c266 document #: 38-04005 rev. ** page 9 of 11 package diagrams (continued) 51-85017-a 28-lead (600-mil) molded dip p15 mil-std-1835 c-12 51-80103-*a 32-pin windowed rectangular leadless chip carrier q55
cy7c266 document #: 38-04005 rev. ** page 10 of 11 ? cypress semiconductor corporation, 2002. the information contained herein is subject to change without notice. cypress semico nductor corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a cypress semiconductor product. nor does it convey or imply any license unde r patent or other rights. cypress semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected t o result in significant injury to the user. the inclusion of cypress semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in do i ng so indemnifies cypress semiconductor against all charges. package diagrams (continued) 28-lead (600-mil) windowed cerdip w16 mil-std-1835 d- 10 config. a
cy7c266 document #: 38-04005 rev. ** page 11 of 11 document title: cy7c266 8k x 8 power switched and reprogrammable prom document number: 38-04005 rev. ecn no. issue date orig. of change description of change ** 113861 3/8/02 dsg change from spec number: 38-00086 to 38-04005

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