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DRAM is a type of RAM that maintains its content only as long as the data stored in the device is refreshed at regular intervals. DRAM requires a refresh cycle every few milliseconds in order to retain its data. The data is stored in a capacitor which slowly leaks, the refresh cycle re-charges the capacitor. DRAM is cheaper SRAM but DRAM is slower because of the longer access times. Many of the different types of DRAM are listed below, followed by a list of manufacturers.
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RAM........Random Access Memory ....MRAM:................Magnetoresistive RAM DRAM.....Dynamic Random Access Memory (requires Refresh) ....FPM:....................Fast Page Mode ....FCRAM:...............Fast Cycle Random Access Memory ....EDO:....................Extended Data Out ....BEDO:..................Burst EDO ....SDRAM:..............Synchronous DRAM ....ESDRAM:............Enhanced SDRAM ....RDRAM:..............Rambus DRAM ....SLDRAM:............Synchronous-Link DRAM ....DDR SDRAM:.....Double Data Rate SDRAM (Dual Edge Rate) ....DDR2 SDRAM:....Double Data Rate SDRAM II (Quad Edge Rate) |
Austin
Semiconductor {DRAM ICs}
Dense-Pac Microsystems "DPAC
Technologies Corp." {DRAM}
Elite Semiconductor
Memory Technology Inc. 'ESMT' {SDRAM-DDR SDRAM-EDO DRAM-SGRAM IC Manufacturer}
Enable Semiconductor Corp. {Mobile SDRAM manufacturer, Mobile DDR SDRAM, DDR SDRAM, PSRAM}
Enhanced Memory Systems Inc. {SDRAM - ESDRAM - RDRAM}
Etron Technology Inc. {DRAM-SDRAM-SGDRAM ICs}
Fujitsu Microelectronics
Inc. {SDRAM - DRAM IC Manufacturer}
G-LINK Technology
Hynix Semiconductor America
Inc. {FP/EDO DRAM-DDR SDRAM-SDRAM-RDRAM}
Integrated Silicon Solutions Inc.
'ISSI' {DRAM IC Manufacturer}
Irvine Sensors Corp. {Chip Stacks-SDRAM-DDR DRAM-EDO}
Micron {SDRAM-SGRAM-SLDRAM-DDR SDRAM}
Mitsubishi Electronics America
Inc. {DRAM-SDRAM IC Manufacturer}
MoSys Inc. "Monolithic System
Technology, Inc." {DRAM - SGRAM - PBSRAM ICs}
Nanya Technology Corp. {DRAM-SDRAM-EDO-FPM-DDR SDRAM}
NEC {SDRAM-RDRAM-DDR SDRAM-VC DRAM}
Nippon Steel Semiconductor Corp. {DRAM IC Manufacturer}
Oki Semiconductor {DRAM IC Manufacturer}
Panasonic Industrial Co. {DRAM IC Manufacturer}
Qimonda AG {DDR/DDR2/DDR3 SDRAM, PSRAM, SLDRAM, Mobile-RAM, RAMBUS}
Rambus Corp. {RDRAM IC Manufacturer}
Renesas Technology Corp
Rochester Electronics {Discontinued Memory IC Vendor}
Samsung Semiconductor Inc. {SDRAM-DDR SDRAM-RAMbus DRAM-EDO Fast page DRAM}
Toshiba America Electronic Components
Inc. {SGRAM, DRAM, FCRAM}
Vanguard International
Semiconductor 'VIS' {SDRAM - DRAM ICs}
Virtium Technology, Inc.
Semiconductor {SDRAM, DDR, DDR2}
White Electronic Designs Corp. {DRAM - SDRAM}
{DRAM Memory Chip IC Manufacturers Index}
This is a general listing of IC Memory manufacturers. The types of products or devices they produce are listed under the company name, in alphabetic order. The listing is subdivided into DRAM Memory Manufacturers, SRAM Memory Manufacturers, RAM - Memory Manufacturers [other], FLASH Memory Manufacturers, EPROM Memory Manufacturers, EEPROM Memory Manufacturers, and PROM / ROM Memory Manufacturers. Below is a listing of companies manufacturing the different memory types.
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