static RAM


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Related to static RAM: dynamic RAM

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 ?
com, or Reader -- Fast Static RAM Marketing, 512-933-7726, or Inquiry Response -- Motorola/Media Relations, PO Box 52073, M/D 56-102, Phoenix, AZ 85072/
All versions of Motorola's late write fast static RAMs will use 3.
com; Reader: Fast Static RAM Marketing, 512-933-7726; Inquiry Response: Motorola, Media Relations, PO Box 52073, M/D 56-102, Phoenix, AZ 85072/
Each copy of the new Fast Static RAM Component and Module Data book is available now for $4.
The Fast Static RAM Division is a business unit within the Microprocessor and Memory Technologies Group based in Austin, Texas.
com; or Reader Contact: Fast Static RAM Marketing, 512-933-7726; or Inquiry Response: Motorola/Media Relations, P.
The selector guide and cross reference remain as the first chapter, followed by chapters on BiCMOS asynchronous fast SRAMs, CMOS asynchronous fast SRAMs, application specific fast static RAMs and fast static RAM modules.
We're very pleased Thomas has accepted the general manager position for the Fast Static RAM Division," said Barry Waite, senior vice president and general manager of the Microprocessor and Memory Technologies Group.
NYSE:HIT) has signed a letter of intent to join the Quad Data Rate (QDR(TM)) co-development team to design and manufacture a complete family of Quad Data Rate and Double Data Rate (DDR) static RAM (SRAM) devices.
19 /PRNewswire/ -- Motorola's Microprocessor and Memory Technologies Group has introduced an industry standard cache tag RAM and two synchronous line buffers into the fast static RAM memory portfolio.
Prior to that, Steven held senior level positions in a number of divisions of IDT, including the Network Products and Static RAM Divisions.
Unlike alternative technologies, Simtek's nvSRAMs, STK14CA8 and STK14C88-3, help system users leverage the full benefits of fast static RAMs, including enhanced performance and ease-of-use, coupled with the non-volatile features of FLASH memories.