MEMORY DATABOOK - Al Kossow's Bitsavers

OKI semiconductorMSC2304YS9/KS9262,144 BY 9 BIT DYNAMIC RAM MODULEGENERAL DESCRIPTIONThe Oki MSC2304YS9/KS9 is a fully decoded, 262,144 words x 9 bit NMOS dynamic randomaccess memory composed of nine 256K DRAMs in plastic leaded chip carrier (MSM41 256JS). Themounting of nine PLCCs together with nine 0.2/-tF decoupling capacitors on a 30 pin glass epoxySingle-In-Line Package provides any application where high density and large capacity of storagememory are required. The electrical characteristics of the MSC2304YS9/KS9 are quite same as theoriginal MSM41256JS; each timing requirements are noncritical, and power supply tolerance is verywide.FEATURES• 262,144 word x 9 bit Organization• Single +5V Supply (10% Tolerance)• 30-Pin Socket Insertable Module• Refresh Period ... 4ms (256 cycles)• All Inputs, Outputs, ClocksFully TTL compatible• 3-States Outputs• Common CAS Control for Eight CommonData-In and Data-Out Lines• Separate CAS Control for One Separate Pairof Data-In and Data-Out Lines• Row Access Time;1 20ns max. (MSC2304-1 2YS9/KS9)150ns max. (MSC2304-15YS9/KS9)• Low Power Dissipation;3465mW max. (MSC2304-12YS9/KS9)3218mW max. (MSC2304-15YS9/KS9)• Operating Temperature ... O°C to 70°CFUNCTIONAL BLOCK DIAGRAM. :::J--r--r;:;:-I----- RASI----- CAllWI':D01I IDvfc Vi§~'l DOSD02DO.r-'---If-+-A~A.1-----liA!lI----- CASWEL ,ovre vf~ Il ooer-'-'-~Ao-A8I----- i'iASI------ CASWE 0I .Dvfc vr fl D07r-'-'-'--+- A~A._RAS~=WEDO. e ail 008I ~~SSCAS9D9VCCVSS~c, ___ ~ C.r--.-+--A~A.------t RASCAllWEr IDICCVf~~.-+-~~RAS~CASWE.'t,ccI v~~ilr'---'-~Ao-A8~AAllf------=WEI ,~ccv~,\'1r-'---'-f-+- ~.r-- RASr----- CASWEI "v,ccV~SOILr--rl--l..A~A.~AASCAllWED 0_JCCVr09256