Mitsubishi Offers 133 MHz, 1-Mbit SRAM for Level-2 PC Cache Memory Applications; Speed-Enhanced, Low-Power Synchronous Pipeline Burst Device Allows Designers to Boost System Performance.SUNNYVALE, Calif.--(BUSINESS WIRE)--Oct. 15, 1996--The Electronic Device Group of Mitsubishi Electronics America, Inc., today announced the North American North American named after North America. North American blastomycosis see North American blastomycosis. North American cattle tick see boophilusannulatus. availability of a speed-enhanced, 1-Mbit synchronous pipeline burst SRAM See static RAM. SRAM - static random-access memory that provides a high-speed, Level-2, cache solution for Pentium and PowerPC microprocessor-based personal computer (PC) systems. The device is targeted for PC cache applications that require the cache-memory bus to operate at up to 133 MHz (MegaHertZ) One million cycles per second. It is used to measure the transmission speed of electronic devices, including channels, buses and the computer's internal clock. A one-megahertz clock (1 MHz) means some number of bits (16, 32, 64, etc. . The device is also available in COAST 3.1-compliant modules that operate at 66 MHz. In addition to PC systems, the SRAM provides a cache memory solution for ISDN ISDN in full Integrated Services Digital Network Digital telecommunications network that operates over standard copper telephone wires or other media. , office network switch, router, telecom and datacom applications that require access times as fast as 5 ns. The 1-Mbit synchronous SRAM device, the M5M5V1132A, has a 32-Kword by 32-bit organization and integrates a 2-bit burst counter, as well as input and output registers on a single monolithic circuit. The device is manufactured in Mitsubishi's 0.4-um SuperCMOS process technology, which combines the best characteristics of bipolar and CMOS (Complementary Metal Oxide Semiconductor) Pronounced "c-moss." The most widely used integrated circuit design. It is found in almost every electronic product from handheld devices to mainframes. technology to enable high-frequency, low-power ICs, such as this 1-Mbit SRAM device, to fit in small die sizes. "This speed-enhanced device allows designers to run the cache-memory bus at clock rates much faster than 66 MHz, which until now has been the ceiling for Level-2 cache," said Narayan Purohit, Mitsubishi Electronics' product manager for SRAMs, Flash memories and PC cards. "As a result, PC, telecom and office networking applications will be able to offer greatly improved performance." Key Features The M5M5V1132A incorporates the following key design features: --A burst mode control pin allows designers to choose either an interleaved burst for Pentium applications or a linear burst for PowerPC applications; --A snooze mode feature turns off Level-2 cache when it is not in use, extending battery life for portable applications while maintaining data integrity; --Synchronous circuitry provides designers with a precise cycle control that is triggered by a positive-edge clock transition; --An on-chip, self-timed write operation eliminates complex signal generation characteristics associated with off-chip write operations; --A flow-through mode offers designers a 2-1-1-1 burst sequence. Supports Level-2 Cache Applications for High-Speed Cpus Designers can implement the M5M5V1132A synchronous SRAM as either single-or dual-banked cache memory for systems that require a bus clock frequency of up to 133 MHz. For example, designers can configure a 256-Kbyte single bank with two devices or configure a 512-Kbyte dual bank with four devices. The SRAM is LVTTL LVTTL Low Voltage Transistor Transistor Logic (AMCC) LVTTL Low Voltage Transistor to Transistor Logic compatible and available in the following access times: 5.0 ns at 133 MHz and 117 MHz, and 5.5 ns at 100 MHz. Designed For Low Voltage And Low Power Consumption The M5M5V1132A features single, 3.3V power supply operation as well as 3.3V and 2.5V I/O (Input/Output) The transfer of data between the CPU and a peripheral device. Every transfer is an output from one device and an input to another. See PC input/output. I/O - Input/Output supply operation. It also offers low power consumption, typically dissipating from 660 mW (at 100 MHz) to 792 mW (at 133 MHz). It consumes only 3.3 mW in stand-by and snooze mode. Available As Both An Ic And Coast 3.1-Compliant Cache Modules This speed-enhanced, 1-Mbit synchronous pipeline burst SRAM device is available in both discrete and COAST 3.1-compliant module form. The 133-MHz device is available as a 1-Mbit IC with the product number M5M5V1132A. The device is also available as 66-MHz cache modules that have been designed to meet the COAST 3.1 specification developed by Intel Corporation. The 512-Kbyte module has the product number MH64S64TR3N, and the a 256-Kbyte module has the product number MH32S64TR3N. Compact Footprint And 100-Pin Standard Package And Module Sizes The 1-Mbit M5M5V1132A IC fits within a 14.0 mm by 20.0 mm footprint, has a pin pitch of 0.65 mm and is available in 100-pin TQFP See QFP. packages. The 512-Kbyte MH64S64TR3N and the 256-Kbyte MH32S64TR3N devices are contained in standard 100-pin SIMM modules. Availability and Pricing The 1-Mbit M5M5V1132A discrete device is available now in volume production. The 133-MHz version of the IC will sell for $16.50 each in 1,000-unit quantities. The 512-Kbyte MH64S64TR3N and 256-Kbyte MH32S64TR3N cache modules are currently available in volume production. About COAST The COAST (Cache-On-A-STick) flexible cache solution, developed by Intel Corporation, is a de facto [Latin, In fact.] In fact, in deed, actually. This phrase is used to characterize an officer, a government, a past action, or a state of affairs that must be accepted for all practical purposes, but is illegal or illegitimate. industry standard for cache memory modules used with Pentium processors. The COAST solution allows one system board to accommodate 256-Kbyte and 512-Kbyte asynchronous Refers to events that are not synchronized, or coordinated, in time. The following are considered asynchronous operations. The interval between transmitting A and B is not the same as between B and C. The ability to initiate a transmission at either end. and pipeline burst modules. As a result, the COAST solution allows one system board to support caches spanning a wide range of price and performance points. About Mitsubishi Electric and Mitsubishi Electronics America Mitsubishi Electric Corporation is one of the leaders in providing high-speed and low-power SRAM products in small package sizes, and is known throughout the industry as a market-driven memory supplier to its OEM (Original Equipment Manufacturer) The rebranding of equipment and selling it. The term initially referred to the company that made the products (the "original" manufacturer), but eventually became widely used to refer to the organization that buys the products and customer base. Mitsubishi markets its SRAM products in North America through the Electronic Device Group, a wholly owned subsidiary Wholly Owned Subsidiary A subsidiary whose parent company owns 100% of its common stock. Notes: In other words, the parent company owns the company outright and there are no minority owners. of Mitsubishi Electronics America, Inc. Mitsubishi Electric Corporation and its North American affiliate, Mitsubishi Electronics America, Inc., are world-class suppliers of semiconductors and electronic products for computers, communications, and visual applications. Mitsubishi combines its systems-level expertise and high-level silicon process technology to provide chip, chipset and system-on-a-chip solutions. The company offers an extensive range of semiconductor-based products in the North American marketplace, including microcontrollers and microprocessors, ASICs, memory ICs, optoelectronic products, microwave GaAs FETs, MPEG (Moving Pictures Experts Group) An ISO/ITU standard for compressing digital video. Pronounced "em-peg," it is the universal standard for digital terrestrial, cable and satellite TV, DVDs and digital video recorders (DVRs). codecs The following is a list of codecs. Audio codecs Non-compression formats
Note to Editors: Pentium is a registered trademark of Intel Corporation. PowerPC is a trademark of International Business Machines Corporation. CONTACT: Mitsubishi Electronics America, Inc. Sherry Hill, 408/774-3188 shill shill Slang n. One who poses as a satisfied customer or an enthusiastic gambler to dupe bystanders into participating in a swindle. v. shilled, shill·ing, shills v.intr. @msm.mea.com or The Horn Group, Inc. Kathleen O'Boyle, 415/579-6455 koboyle@horngroup.com |
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