Mitsubishi Samples JEDEC Standard, 512-Mbyte Registered DIMM Built Using 0.18-um, 256-Mbit PC266 or PC200 DDR SDRAMs.
Business Editors & High Tech Writers
SUNNYVALE, Calif.--(BUSINESS WIRE)--Jan. 18, 2000
Mitsubishi Electronics America's Electronic Device Group today announced sample availability of a 512-Mbyte registered dual in-line memory module See DIMM.
(storage) Dual In-line Memory Module - Small circuit boards carrying memory integrated circuits, with signal and power pins on both sides of the board, in contrast to single-in-line memory modules (SIMM). (DIMM (Dual In-Line Memory Module) A printed circuit board that holds memory chips and plugs into a DIMM socket on the motherboard. See memory module.
DIMM - Dual In-Line Memory Module ) that is compliant with JEDEC The division of the Electronic Industries Alliance (EIA) that deals with semiconductor standards (officially, the JEDEC Solid State Technology Association of EIA). JEDEC was formed in 1958 when the Joint Electron Tube Engineering Council (JETEC) split into two Joint Electron Device standards, meets PC266 and PC200 requirements, and is targeted to meet the large main memory needs of high-end servers, workstations, and PCs. Built using 18 pieces of Mitsubishi's discrete 256-Mbit PC266 or PC200 Double Data Rate (DDR) Synchronous DRAMs (SDRAMs), which are manufactured in a 0.18-um 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. process technology, the 184-pin registered DIMM can achieve a peak data transfer rate of up to 2.1 Gbytes per second at a clock frequency of up to 133 MHz -- or up to 266 Mbits per second per data pin -- when used with a 64-bit data bus.
The 512-Mbyte registered DIMM samples are first available using 256-Mbit DDR SDRAMs in a by-4-bit configuration, which is ideally suited for server, workstation, networking, and communications system applications that require system-level error correction code Noun 1. error correction code - (telecommunication) a coding system that incorporates extra parity bits in order to detect errors
telecommunication - (often plural) the branch of electrical engineering concerned with the technology of electronic (ECC (1) (Error-Correcting Code) A type of memory that corrects errors on the fly. See ECC memory.
(2) (Elliptic Curve Cryptography) A public key cryptography method that provides fast decryption and digital signature processing. ) detection and correction with "chip-kill" protection. Mitsubishi is also now developing a 512-Mbyte DIMM using 256-Mbit DDR SDRAMs in a by-8-bit configuration.
"The availability of the 512-Mbyte registered DIMM demonstrates Mitsubishi's commitment to the needs of high-end server, workstation, and PC customers who want JEDEC-compliant, PC266 and PC200 DDR SDRAM module solutions as soon as possible," said Cecil Conkle, assistant vice president of DRAM marketing at Mitsubishi Electronics America Inc.
The 512-Mbyte DDR SDRAM based DIMM uses the JEDEC-standard stub series terminated logic Stub Series Terminated Logic (SSTL) devices are a family of electronic devices for driving transmission lines. They are specifically designed for driving the DDR (double-data-rate) SDRAM modules used in computer memory. (SSTL SSTL Surrey Satellite Technology Ltd
SSTL Stub Series Terminated Logic
SSTL Site Specific Target Level
SSTL Solid State Track Link _2) interface. This interface typically features less than half the voltage swing of the low-voltage transistor-to-transistor logic (LVTTL LVTTL Low Voltage Transistor Transistor Logic (AMCC)
LVTTL Low Voltage Transistor to Transistor Logic ) interface used in conventional SDRAM (Synchronous DRAM) A type of dynamic RAM (DRAM) memory chip that has been widely used since the late 1990s. SDRAM chips eliminated wait states by dividing the chip into two cell blocks and interleaving data between them. . The module offers 2.5-volt operation for low power dissipation. Input signals to the registered DIMM access memory chips through either the phase locked loop (PLL) or one of the register buffers on the DIMM.
Packaging, Availability and Pricing
Mitsubishi's 512-Mbyte DDR SDRAM based DIMM, MH64D72KLG, is available in a JEDEC-standard 184-pin module that is 133.35-mm x 43.18-mm. Samples of the DIMM will be available in February 2000, with volume production scheduled for April 2000. Sample pricing for the PC266 and PC200 versions of the DIMM are $7,048 and $5,334 each, respectively.
About Mitsubishi Electric and Mitsubishi Electronics America Inc.
Mitsubishi Electric Corporation is one of the world's top-10 DRAM suppliers and aggressively develops advanced DRAMs, such as PC100, PC133, and DDR SDRAM, RDRAM (Rambus DRAM) Pronounced "r-d-ram." A dynamic RAM chip technology from Rambus, Inc., Los Altos, CA (www.rambus.com). Rambus licensed its memory designs to semiconductor companies, which manufactured the chips. (R), and other emerging industry-standard DRAM types to support current and future customer requirements. Mitsubishi Electric is the first company to successfully integrate the process technologies of DRAM and processor logic with its highly acclaimed eRAM(TM) system integration technology, and has shipped embedded DRAM products in high volume for longer than any other supplier. eRAM is Mitsubishi Electric's brand name for its silicon process technology, products, and systems expertise that integrate memory and system-level core functions on the same integrated circuit to enable unprecedented overall system performance.
A top-tier semiconductor supplier, Mitsubishi Electric markets memory products and an extensive range of other semiconductors in North America through the Electronic Device Group of Mitsubishi Electronics America, Inc. Additional information on the Mitsubishi Electric Semiconductor Group is available at http://www.mitsubishichips.com/.
eRAM is a trademark of Mitsubishi Electronics America Inc. RDRAM is a registered trademark of Rambus Inc. All other companies and products referenced herein are trademarks or registered trademarks of their respective holders.
Mitsubishi, DDR, SDRAM, DDR SDRAM, PC266, PC133, Synchronous DRAM, DRAM.