EDI8F81026C 1megx8 sram module 1 EDI8F81026C rev. 4.0 4/96 eco#7470 features 1 meg x 8 bit cmos static random access memory ? access times 20 thru 35ns ? ttl compatible inputs and outputs ? fully static, no clocks high density packaging ? jedec approved, revolutionary pinout ? 36 pin dip, no. 179 single +5v (10%) supply operation 1 megabit x 8 static ram cmos, module with revolutionary pinout the EDI8F81026C is an 8 megabit cmos static ram based on two 512kx8 static rams mounted on a multi-layered epoxy laminate (fr4) substrate. the EDI8F81026C is packaged in a 36 pin dip and features the jedec approved, revolutionary pinout. all inputs and outputs are ttl compatible and operate from a single 5v supply. fully asynchronous, the EDI8F81026C requires no clocks or refreshing for operation. pin configurations and block diagram pin names a?-a19 address inputs e chip enable w write enable g output enable dq?-dq7 common data input/output vcc power (+5v10%) vss ground nc no connection a? a1 a2 a3 a4 e dq? dq1 vcc vss dq2 dq3 w a5 a6 a7 a8 a9 nc a19 a18 a17 a16 g dq7 dq6 vss vcc dq5 dq4 a15 a14 a13 a12 a11 a1? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1mx8 revolutionary pinout 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 a?-a18 w g a19 e decoder dq?-dq7 electronic designs incorporated ? one research drive ? westborough, ma 01581usa ? 508-366-5151 ? fax 508-836-4850 ? electronic designs europe ltd. ? shelley house, the avenue ? lightwater, surrey gu18 5rf united kingdom ? 01276 472637 ? fax: 01276 473748
2 EDI8F81026C rev. 4.0 4/96 eco#7470 EDI8F81026C 1megx8 sram module absolute maximum ratings* recommended dc operating conditions dc electrical characteristics typical: ta = 25c, vcc = 5.0v capacitance truth table (f=1.0mhz, vin=vcc or vss) parameter sym max unit address lines ci 30 pf data lines cd/q 43 pf chip enable line cc 10 pf write and output enable lines cw 32 pf ac test conditions *stress greater than those listed under "absolute maximum ratings" may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions greater than those indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. parameter sym min typ max units (note: for tehqz,tghqz and twlqz, cl = 5pf) voltage on any pin relative to vss -0.5v to 7.0v operating temperature ta (ambient) commercial 0c to +70c industrial -40c to +85c storage temperature -55c to +125c power dissipation 2.0 watt output current. 20 ma supply voltage vcc 4.5 5.0 5.5 v supply voltage vss 0 0 0 v input high voltage vih 2.2 -- 6.0 v input low voltage vil -0.3 -- 0.8 v input pulse levels vss to 3.0v input rise and fall times 5ns input and output timing levels 1.5v output load 1ttl =30pf g e w mode output power x h x standby high z icc2, icc3 h l h output deselect high z icc1 l l h read dout icc1 x l l write din icc1 these parameters are sampled, not 100% tested. parameter sym conditions min typ* max units operating power icc1 w, e = vil, ii/o = 0ma, -- 230 300 ma supply current min cycle standby (ttl) power icc2 e ? vih, vin - vil -- 35 50 ma supply current vin ? vih full standby power icc3 e ? vcc-0.2v -- 20 30 ma supply current (cmos) vin ? vcc-0.2v or vin - 0.2v input leakage current ili vin = 0v to vcc -- -- 10 a output leakage current ilo v i/o = 0v to vcc -- -- 10 a output high voltage voh ioh =-4.0ma 2.4 -- -- v output low voltage vol iol = 8.0ma -- -- 0.4 v
EDI8F81026C 1megx8 sram module 3 EDI8F81026C rev. 4.0 4/96 eco#7470 ac characteristics read cycle symbol 20ns 25ns 35ns parameter jedec alt. min max min max min max units read cycle time tavav trc 20 25 35 ns address access time tavqv taa 20 25 35 ns chip enable access time telqv tacs 20 25 35 ns chip enable to output in low z (1) telqx tclz 3 3 3 ns chip disable to output in high z (1) tehqz tchz 10 12 15 ns output hold from address change tavqx toh 3 3 3 ns output enable to output valid tglqv toe 8 10 12 ns output enable to output in low z (1) tglqx tloz 0 0 0 ns output disable to output in high z(1) tghqz tohz 8 10 12 ns tghqz telqv telqx e g q tehqz a tavav tglqv tglqx tavqv note: 1. parameter guaranteed, but not tested read cycle 1 - w high, g, e low read cycle 2 - w high tavav tavqv tavqx data 2 a q address 1 address 2 data 1
4 EDI8F81026C rev. 4.0 4/96 eco#7470 EDI8F81026C 1megx8 sram module ac characteristics write cycle note 1: parameter guaranteed, but not tested. symbol 20ns 25ns 35ns parameter jedec alt. min max min max min max units write cycle time tavav twc 20 25 35 ns chip enable to end of write telwh tcw 15 20 30 ns teleh tcw 15 20 30 ns address setup time tavwl tas 0 0 0 ns tavel tas 0 0 0 ns address valid to end of write tavwh taw 15 15 20 ns taveh taw 15 15 20 ns write pulse width twlwh twp 15 20 25 ns twleh twp 15 20 25 ns write recovery time twhax twr 0 0 0 ns tehax twr 0 0 0 ns data hold time twhdx tdh 0 0 0 ns tehdx tdh 0 0 0 ns write to output in high z (1) twlqz twhz 0 8 0 12 0 15 ns data to write time tdvwh tdw 12 15 20 ns tdveh tdw 12 15 20 ns output active from end of write (1) twhqx twlz 3 3 3 ns a e w d q tavav telwh tavwh twlwh tavwl tdvwh twhdx twhqx high z twlqz data valid twhax write cycle 1 - w controlled
EDI8F81026C 1megx8 sram module 5 EDI8F81026C rev. 4.0 4/96 eco#7470 write cycle 2 - e controlled a w e d q tavav tavel tehax tdveh tehdx teleh taveh data valid high z twleh standard power speed package (ns) no. EDI8F81026C20m6c 20 179 EDI8F81026C25m6c 25 179 EDI8F81026C35m6c 35 179 note: to order an industrial grade product substitute the letter c in the suffix with the letter i, eg. EDI8F81026C25m6c becomes EDI8F81026C25m6i. package no. 179 36 pin dual-in-line package package description 2.185 max 0.625 max 0.620 0.590 17 x 0.100 1.700 ref. 0.100 typ 0.150 ref 0.175 0.125 0.290 max ordering information
6 EDI8F81026C rev. 4.0 4/96 eco#7470 EDI8F81026C 1megx8 sram module electronic designs incorporated ? one research drive ? westborough, ma 01581usa ? 508-366-5151 ? fax 508-836-4850 ? electronic designs europe ltd. ? shelley house, the avenue ? lightwater, surrey gu18 5rf united kingdom ? 01276 472637 ? fax: 01276 473748 electronic designs inc. reserves the right to change specifications without notice. cage no. 66301
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