Static information storage and retrieval – Magnetic bubbles – Guide structure
Patent
1994-12-13
1997-05-13
Chan, Eddie P.
Static information storage and retrieval
Magnetic bubbles
Guide structure
395250, 395436, 395872, 365 78, 36518912, 365220, G06F 1316, G06F 1202
Patent
active
056300913
ABSTRACT:
A buffer memory architecture, method, and chip floor plan allows for significant reduction in the physical area required for a buffer memory of any given size in a microelectronic device. Buffer applications wherein random access to the buffered data is not required use a CMOS dynamic serial memory with p-channel devices supplied with a voltage less positive than the voltage supplied to their respective n-wells. In a particular embodiment, three memory stages are used in a cascaded fashion. The first and third memory stages store data on a parallel basis, while the second memory stage stores data on a serial basis. The second memory stage can be fabricated using much less chip area per bit than the first and third memory stages. Significant area reduction is achieved because the second memory stage eliminates addressing overhead associated with conventional high-density memory schemes, and low voltage power supplies permit relaxation of latch-up prevention layout rules.
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Lin Chong M.
Werner Raymond J.
Bragdon Reginald G.
Chan Eddie P.
Seiko Epson Corporation
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