Synchronous memory packaged in single/dual in-line memory module and method of fabrication

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United States of America Patent

PATENT NO 5513135
SERIAL NO

08349154

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Abstract

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Multiple synchronous dynamic random access memories (SDRAMs) are packaged in a single or a dual in-line memory module to have similar physical and architectural characteristics of dynamic random access memories (DRAMs) packaged in single/dual in-line memory modules. A 168 pin SDRAM DIMM family is presented which requires no modification of existing connector, planar or memory controller components. The 168 pin SDRAM DIMM family includes 64 bit non-parity, 72 bit parity, 72 bit ECC and 80 bit ECC memory organizations. Special placement and wiring of decoupling capacitors about the SDRAMs and the buffer chips contained within the module are also presented to reduce simultaneous switching noises during read and write operations. A special wiring scheme for the decoupling capacitors is employed to reduce wiring inductance.

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Patent Owner(s)

Patent OwnerAddress
INTERNATIONAL BUSINESS MACHINES CORPORATIONARMONK NY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dell, Timothy J Colchester, VT 79 2330
Farah, Lina S Burlington, VT 1 402
Feng, George C Essex Junction, VT 10 637
Kellogg, Mark W Essex Junction, VT 51 2735

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