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Topic: Fast Page Mode DRAM

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	dram (Site not responding. Last check: 2007-11-05)
		DRAM is a type of random access memory that stores each bit of data in a separate capacitor.
		Internally, the DRAM connects the selected row to a bank of amplifiers called sense amplifiers, which read the contents of all the capacitors in the row.
		Fast page mode DRAM is also called FPM DRAM or Page mode DRAM or Fast page mode memory or Page mode memory.
	www.yourencyclopedia.net /DRAM.html (1381 words)

	Dynamic random access memory - Wikipedia, the free encyclopedia
		DRAM is usually arranged in a square array of capacitors, as shown in the illustrations here which show a simple example with only 4 by 4 cells (more typical DRAM has 1024 by 1024 cells).
		DRAM cells are smaller and therefore cheaper than SRAM cells, which operate by flip-flops rather than capacitors (1 transistor and 1 capacitor take less space than 6 transistors).
		In page mode, a row of the DRAM can be kept "open", so that successive reads or writes within the row do not suffer the delay of precharge and accessing the row.
	en.wikipedia.org /wiki/Dynamic_random_access_memory (2386 words)

	SDRAMS_Explained (Site not responding. Last check: 2007-11-05)
		EDO operation: Improvement in page mode cycle time was achieved by converting the normal sequential fast page mode operation into a two-stage pipeline.
		A page address is presented to the DRAM, and the data at that selected address is amplified and latched at the data output drivers.
		Assuming the burst is from a DRAM page that is already open (page hit), the achievable burst rate at 66MHz using 60ns DRAMs is 5/3/3/3 cycles for FPM DRAMs; for EDO DRAMs it is 5/2/2/2.
	www.vtel.com /support/catchall/sdrams.htm (2218 words)

	Using Fast Page Mode Dynamic Memories for Sampling (Site not responding. Last check: 2007-11-05)
		A speciel mode of the Fast Page Mode DRAM's was the CAS Before RAS Refresh Counter Test Cycle.
		The mode was intended for testing the Refresh Counter, but it may be used for lots of other purposes too.
		Since the DRAM stores the CAS address will the counter not need to be synchronous, but a higher speed may be possible if using a synchronous counter (or an LFSR, Linear Feedback Shift Register).
	www.gaby.de /z80/jmdram.htm (477 words)

	Fast Page Mode DRAM - a Whatis.com definition - see also: FPM DRAM (Site not responding. Last check: 2007-11-05)
		Prior to newer forms of dynamic random access memory (DRAM), FPM DRAM (Fast Page Mode DRAM) was the most common kind of DRAM in personal computers.
		Page mode DRAM essentially accesses a row of RAM without having to continually respecify the row.
		Clock timings for FPM DRAM are typically 6-3-3-3 (meaning 3 clock cycles for access setup, and 3 clock cycles for the first and each of three successive accesses based on the initial setup).
	whatis.techtarget.com /definition/0,,sid9_gci213955,00.html (172 words)

	Zomi Computer & Internet Association (Site not responding. Last check: 2007-11-05)
		Fast page mode - A feature used to support faster sequential access to DRAM by allowing multiple accesses to the currently open row to be made after supplying the row address just once.
		Mode in which if RAS is kept low and the DRAM is given a column address without being given a new row-address, the chip will remember which row it was on the last time and automatically stay on that row.
		Rambus DRAM is a revolutionary type of DRAM that uses a 16-18 bit data path and is designed to operate with FSB speed of 800MHz, producing a burst transfer rate of 1.6 gigahertz.
	www.zcia.net /modules.php?name=Memory_Terms (3081 words)

	* EDO DRAM - (Computing): Definition
		A type of memory that allows for faster read times than DRAM of comparable speed by allowing a new read cycle to begin while data is being read from a previous cycle...
		EDO DRAM is primarily used with 's processors since with slower processors there is no significant performance gain.
		Burst EDO is a variant on EDO DRAM in which read or write cycles are batched in bursts of four.
	en.mimi.hu /computing/edo_dram.html (277 words)

	Ars Technica: RAM Guide: Part II: Asynchronous and Synchronous DRAM - Page 2 - (7/2000) (Site not responding. Last check: 2007-11-05)
		For asynchronous DRAM chips, the access time describes the amount of time it takes in between when you drop that row address on the address pins and when you can expect the data to show up at the data pins.
		Fast Page Mode DRAM is so called because it squirts out data in 4-word bursts (a word is whatever the default memory chunk size is for the DRAM, usually a byte), where the four words in each burst all come from the same row, or page.
		One important thing to notice in the FPM DRAM diagram is that you can't latch the column address for the next read until the data from the previous read is gone.
	arstechnica.com /paedia/r/ram_guide/ram_guide.part2-2.html (1048 words)

	What is FPM DRAM? Fast Page Mode Columns Rows Memory Address (Site not responding. Last check: 2007-11-05)
		A "page" is the section of Memory available within a row address.
		FPM DRAMs need only to specify the row address once for accesses within the same pages addresses.
		Successive accesses to the same page of Memory only require a column address to be selected, which saves time in accessing the Memory.
	bugclub.org /beginners/memory/fpm.html (83 words)

	Fast Page Mode (FPM) DRAM
		Fast page mode or FPM memory is slightly faster than conventional DRAM.
		While standard DRAM requires that a row and column be sent for each access, FPM works by sending the row address just once for many accesses to memory in locations near each other, improving access time.
		Despite its name ("fast" page mode), FPM is actually the slowest memory technology used in modern PCs.
	www.pcguide.com /ref/ram/techFPM-c.html (231 words)

	Bunnie's DRAM FAQ
		DRAM cells are so sensitive that stray alpha particles can induce errors (called soft errors by DRAM mfgs).
		Fast Page Mode DRAM is the vanilla DRAM as of June 1996, and is rapidly being replaced by other faster technologies.
		A fast page mode DRAM access consists of a sequence of accesses where only the first access specifies both row and column addresses; the remainder specifies just a column address (the row address is implicity the same).
	www.mit.edu /activities/rec/dramfaq/DRAMFAQ.html (970 words)

	Memory... (Site not responding. Last check: 2007-11-05)
		EDO works much like Fast Page Mode DRAM: A row of memory is activated, and then the column is activated.
		But when the data is found, instead of deactivating the column and turning off the output buffer (which is what FPM DRAM does), EDO memory keeps the output data buffer on until the next column access or next read cycle begins.
		In Synchronous DRAM all operations are synchronized with the processor clock signal.
	www.iimahd.ernet.in /~jajoo/memory.htm (519 words)

	Different RAM Types and its uses
		SDRAM is not an extension of older EDO DRAM but a new type of DRAM altogether.
		Cache Memory is fast memory that serves as a buffer between the processor and main memory.
		Fast Page Mode DRAM is plain old DRAM as we once knew it.
	computermemoryupgrade.net /types-of-computer-memory-common-uses.html (1471 words)

	HET40x (Site not responding. Last check: 2007-11-05)
		Up to 16 MByte DRAM on the local bus, up to 16 MByte DRAM on the global bus.
		Optionally, a J3 connector may be fitted, which allows the global bus to access (shared memory on) the module carrier.
		The DRAM used is fast page mode DRAM.
	www.hunteng.co.uk /legacy_products/het40x.htm (239 words)

	Simmtronics is the Registered Trade Mark of Memory Component Corporation
		The number of pulses emitted from a computer's clock in one second; it determines the rate at which logical or arithmetic gating is performed in a synchronous computer.
		Fast t Page Mode – Common DRAM data access mode that is similar to finding information in an encyclopedia.
		The process of refreshing electrical cells on a DRAM component is similar to recharging batteries.
	simmtronics.com /glossary.htm (1449 words)

	Standard (Fast Page Mode) DRAM
		The oldest technology used in video card memory, fast page mode (FPM) memory is now considered "standard" DRAM as it has the fewest performance-enhancing capabilities of the different types of memory on the market.
		FPM DRAM is a technology used primarily for main system memories (even there, it is now considered a poor performer) and is not really well-suited for high-performance video applications.
		The limitations of standard DRAM are due to two primary effects: it is single ported (which means it can only do one access at a time) and it runs at a relatively low speed and access width.
	www.pcguide.com /ref/video/techFPM-c.html (282 words)

	[No title] (Site not responding. Last check: 2007-11-05)
		DRAM: 1 transistor per bit; DRAM needs to be refreshed (approx.
		capacity of DRAM is 4 to 8 times that of comparable SRAM, but SRAM has cycle times 8 to 16 times faster than DRAM, and is 8 to 16 times more costly.
		Prior to newer forms of DRAM, Fast Page Mode DRAM (FPM DRAM) was the most common kind of DRAM in personal computers.
	wearcam.org /ece385/lecturedram (472 words)

	Fast Page Mode SDRAM Controller (Site not responding. Last check: 2007-11-05)
		Fast page mode DRAM offers improved speed over standard DRAM.
		When memory access is performed within the same address row (page), a single precharge is required for only the first access.
		Subsequent access within the page can then be made without the time penalty of additional precharge cycles.
	latticesemi.com /products/devtools/ip/refdesigns/sdram_controller.cfm (138 words)

	Tom's Hardware Guide Motherboards & RAM: Ram Guide - Fast Page Mode (Site not responding. Last check: 2007-11-05)
		Fast Page mode improved upon the original page mode by eliminating the column address setup time during the page cycle.
		Since RAS\ remains low for the entire page cycle, this acts as a transparent latch when CAS\ is high, and allows address setup to occur as soon as the column address is valid, rather than waiting for CAS\ to fall.
		Fast Page mode became the most widely used access method for DRAMs, and is still used on many systems.
	www.tomshardware.com /motherboard/19981024/ram-04.html (833 words)

	Dynamic random access memory : DRAM
		For simplicity, the graphics adaptor is usually designed so that the contents of a row, and therefore the contents of the shift-register, corresponds to a complete horizontal line on the display.
		Synchronous graphics RAM or SGRAM is a specialised form of SDRAM for graphics adaptors.
		Pseudostatic RAM or PSRAM is dynamic RAM with built-in refresh and address-control circuitry to make it behave similarly to static RAM (SRAM).
	www.fastload.org /dr/DRAM.html (1299 words)

	MemAgent - Memory Optimizer
		FPM DRAM – Fast Page Mode Dynamic Random Access Memory is one of the earlier forms of RAM type and is an improvement over the conventional DRAM.
		Traditional DRAM requires the physical column and row address of each memory cell for each memory access, whereas FPM DRAM uses one row address for multiple accesses.
		Ironically, Fast Page Mode DRAM is the slowest type of memory technology compatible with modern PCs and can only be used on buses up to a maximum of 66MHz.
	www.memagent.com /dram.html (431 words)

	MicroMac 168-pin 5V FPM Memory DRAM DIMM
		The 168-pin 64-bit 5V FPM (Fast Page Mode) DIMM is required for the 7200-series and 8200-series of Power Macintosh models.
		FPM means Fast Page Mode, a memory access mode to increase the memory access speed in certain Mac models.
		This term refers to the two-sided connection method of the memory module to the connector on the logic board.
	www.micromac.com /products/memory_dimm_168pin_fpm.html (482 words)

	HECCFG44 (Site not responding. Last check: 2007-11-05)
		On the local bus: 4 or 16 MByte of fast page mode DRAM.
		The processor has 4 or 16 MByte of fast page mode DRAM on its local bus.
		The framestore is 1 MByte in size; the dimensions are 512x512 pixels that are 24 bit wide.
	www.hunteng.co.uk /legacy_products/heccfg44.htm (289 words)

	Tools Folder - Hunt Engineering: HET40SDX/HET38 (processing TIM-40 module) (Site not responding. Last check: 2007-11-05)
		The SRAM used is zero wait state SRAM, the DRAM is fast page mode DRAM.
		The HET38 module has 32Mbytes of DRAM on its local bus, 4Mbytes of DRAM on its global bus and a further 2Mbytes of SRAM on its global bus.
		Application areas include all the traditional parallel processing and DSP applications, especially those where fast memory access is required.
	focus.ti.com /catalog/docs/thirdpartysoftwarefolder.tsp?softwareId=1469 (228 words)

	Computer System DRAM Technologies
		As discussed earlier, DRAM was originally created to act as a fast middle-man to slow storage devices.
		The first popular redesign of DRAM used a new feature called Fast Page Mode, which by default receives performance gains if the next access is identical or concurrent to the prior access.
		EDO DRAM is also seemingly more capable of handling 60 ns, which makes it ideal for 66 MHz motherboards.
	www.computermemoryupgrade.net /system-dram-technologies.html (1172 words)

	COMPUTERCRAFT - Videochipsets
		Can be very fast due to fast memory timing, although max resolutions are limited by 16-bit DAC interface.
		Accelerated DRAM chipset that uses cache memory Used in Spider 256 Cache, and in different NEC models.
		Fast 2D acceleration, hardware colour space conversion and video scaling for fast video, texture mapping, Gouraud shading, transparency, double buffering for fast 3D.
	www.computercraft.com /docs/Videochipsets.html (1738 words)

	[No title] (Site not responding. Last check: 2007-11-05)
		An SRAM device in which the data outputs are not registered and hence are driven onto the bus one clock cycle after the access has been initiated.
		The standard operating mode of DRAMs until the introductions of EDO and SDRAM.
		A DRAM that enables a stream of data (a page) to be either read or written by cycling the Column Address Strobe.
	www.macrotronusa.com /glossary/page13.html (131 words)

	AnandTech: RAM Guide
		FPM DRAM gets its name, from the mode by which it transfers data, via a type of transfer style called Fast Paging.
		Although, Fast Page Mode DRAM was more than enough for the 486 class of systems, Pentium users demanded more.
		Officially, EDO and BEDO DRAM is only spec'd for Bus Speeds up to 66MHz, however people have been able to use the 75 and 83.3MHz bus speeds successfully with EDO DRAM, so a faster type of RAM is still not "required" but one would be nice...that's why SDRAM was created.
	www.anandtech.com /showdoc.aspx?i=113&p=5 (1024 words)

	DRAM Example Essays.com - Over 101,000 essays, term papers and book reports! (Site not responding. Last check: 2007-11-05)
		Almost all PCs came with fast page mode (FPM) DRAM, which ran at speeds between 100ns and 80ns.
		However, escalating CPU and motherboard bus speeds outstripped the ability of FPM DRAM to deliver data in a timely manner.
		Though these high-performance DRAMs have been available for only a few years, it is apparent that they will soon be replaced by at least one of the protocol-based designs, such as SyncLink or the DRDRAM design from Rambus, Inc. and Intel.
	www.exampleessays.com /viewpaper/93954.html (292 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations (Site not responding. Last check: 2007-11-05)
		In this paper, total ionizing dose radiation evaluations of the Micron 64 Mb 3.3 V, fast page mode DRAM and the IBM LUNA-ES 16 Mb DRAM are presented.
		General agreement was found between the threshold voltage shifts of 16 Mb DRAM test structures and the threshold voltage measured on complete circuits using retention time measurements.
		Retention time measurement data from early radiation doses are shown that allow internal failure modes to be distinguished.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=203688 (243 words)

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