static RAM

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Related to Static random access memory: SRAM, Dynamic random access memory

static RAM

static RAM

A fast memory technology that requires power to hold its content. Static RAM (SRAM, S-RAM) is used for high-speed registers, caches and relatively small memory banks such as a frame buffer on a graphics card. In contrast, the main memory in a computer is typically dynamic RAM (DRAM). Static RAM chips have access times in the 10 to 30-nanosecond range, while dynamic RAM is usually above 50 ns.

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Static RAM is fast because the six-transistor configuration of its pretzel-like flip-flop circuits keeps current flowing in one direction or the other (0 or 1). The 0 or 1 state can be written and read instantly without waiting for a capacitor to fill up or drain; however, the six transistors take more space than dynamic RAM cells made of one transistor and one capacitor (see dynamic RAM).

Earlier asynchronous static RAM chips performed read and write operations sequentially. Newer synchronous static RAM chips overlap reads and writes.


A Static RAM Cell
When opposite voltages are applied to the column wires, the flip-flop is oriented in one of two directions for a 0 or 1. At that point, the flip-flop (yellow center) becomes a self-perpetuating storage cell as long as a constant voltage is applied.
References in periodicals archive ?
GSI Technology Inc (Nasdaq:GSIT), a provider of high performance static random access memory or SRAM products, disclosed on Monday regarding a recent development in its litigation with Cypress Semiconductor Corp that is pending before the International Trade Commission (the ITC).
Under the terms of the agreement ESMT is to acquire Cypress' Pseudo Static Random Access Memory (PSRAM) product line.
It features 32K of One Time Programmable (OTP) program memory and 1K of on-chip data Static Random Access Memory (SRAM).
The most common approach to creating 3-D electronic devices has been to take sections of existing silicon-based memory components, such as flash, SRAM (static random access memory), or DRAM (dynamic random access memory) devices, and stack them on each other.
GSI Technology Inc (Nasdaq: GSIT), a provider of high-performance static random access memory (SRAM) products, said on Thursday that its board of directors has adopted a new programme to repurchase, at management's discretion, shares of GSI Technology's common stock having an aggregate purchase price of up to USD10m.
Simtek Corporation (OTC Bulletin Board: SRAM), a supplier of monolithic non-volatile static random access memory (nvSRAM) integrated circuits, announced on Thursday (30 March) the signing of a licence and development agreement with Cypress Semiconductor Corp (NYSE: CY).
GSI Technology Inc (Nasdaq: GSIT), a provider of high-performance static random access memory (SRAM) products, on Thursday reported net income of USD991,000, or USD0.03 per diluted share, for the third quarter of fiscal 2012, ended 31 December 2011.
Provider of high-performance static random access memory products, GSI Technology Inc's (Nasdaq:GSIT) board of directors adopted, at the management's discretion, a new share buy back programme of the company's common stock with a total purchase price of up to USD10m, it stated on Thursday.