Article | REF: E2490 V1

Semiconductor memories

Author: Christophe FREY

Publication date: November 10, 2006

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2. Memory principles used

Memory principles depend essentially on the type of technology used. Depending on the technology used, static memories, dynamic memories and so on are more likely to be created. So we're going to describe them by function rather than by technology.

2.1 Static SRAM memories

They can store information statically (permanently when the power supply is maintained, with no need to refresh the information), and the point structure is generally that of a bistable whose contents are changed (Q = 0 or 1) using external transistors. Reading is also carried out via transistors which enable selection of the point or word required (these are often the same for writing and reading) without destroying the information.

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Memory principles used