Details, datasheet, quote on part number: PD488588FF-C71-45-DH1
Description288m Bits Direct RAMbus DRAM
CompanyElpida Memory
DatasheetDownload PD488588FF-C71-45-DH1 datasheet


Features, Applications


The Direct Rambus DRAM (Direct RDRAM) is a general purpose high-performance memory device suitable for use in a broad range of applications including computer memory, graphics, video, and any other application where high bandwidth and low latency are required. The is 288Mbits Direct Rambus DRAM (RDRAM), organized as 16M words by 18 bits. The use of Rambus Signaling Level (RSL) technology permits to 800MHz transfer rates while using conventional system and board design technologies. Direct RDRAM devices are capable of sustained data transfers at 1.25ns per two bytes (10ns per sixteen bytes). The architecture of the Direct RDRAMs allows the highest sustained bandwidth for multiple, simultaneous randomly addressed memory transactions. The separate control and data buses with independent row and column control yield over 95% bus efficiency. The Direct RDRAM's four banks support up to four simultaneous transactions. System oriented features for mobile, graphics and large memory systems include power management, byte masking. The µPD488588 is offered in a CSP horizontal package suitable for desktop as well as low-profile add-in card and mobile applications. Direct RDRAMs operate from a 2.5V supply.


Highest sustained bandwidth per DRAM device 1.6 GB/s sustained data transfer rate Separate control and data buses for maximized efficiency Separate row and column control buses for easy scheduling and highest performance 32 banks: four transactions can take place simultaneously at full bandwidth data rates Low latency features Write buffer to reduce read latency 3 precharge mechanisms for controller flexibility Interleaved transactions Advanced power management: Multiple low power states allows flexibility in power consumption versus time to active state Power-down self-refresh Overdrive current mode Organization: 2K bytes pages and 32 banks, x 18 Uses Rambus Signaling Level (RSL) for to 800MHz operation Package : 80-ball FBGA (µBGA) × 10.2)

Document No. E0039N30 (Ver. 3.0) Date Published July 2002 (K) Japan URL: Elpida Memory, Inc. 2001-2002 NEC Corporation 2000 Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.

Part number Organization* words × bits × Internal Banks x 32s Clock frequency MHz (max.) 711 800 /RAS access time (ns) 53 45 Package 80-ball FBGA (µBGA) × 10.2)

Note: The "32s" designation indicates that this RDRAM core is composed of 32 banks which use a "split" bank architecture

Note Some signals can be applied because this pin is not connected to the inside of the chip.


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