PD488588FF datasheet(1/79 Pages) ELPIDA

Part #	PD488588FF

Description	288M bits Direct Rambus DRAM for High Performance Solution

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Manufacturer	ELPIDA [Elpida Memory]

Direct Link	http://www.elpida.com/en

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Document No. E0251N20 (Ver. 2.0)

Date Published July 2002 (K) Japan

URL: http://www.elpida.com

Elpida Memory,Inc. 2002

Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.

DATA SHEET

288M bits Direct Rambus DRAM

for High Performance Solution

µµµµPD488588FF-C80-40 (512K words ×××× 18 bits ×××× 32s banks)

Description

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

µPD488588FF is 288Mbits Direct Rambus DRAM

(RDRAM), organized as 16M words by 18 bits.

The use of Rambus Signaling Level (RSL) technology

permits 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

µPD488588FF 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.

Features

• 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 up to

800MHz operation

• Package : 80-ball FBGA (

µ BGA) (17.16 × 10.2)

Application

The

µPD488588FF is most appropriate for the

applications, such as consumer products demanding

vivid animations, processor memory for multimedia

and 3D graphics, network processing and storage

systems requiring scalability to accommodate future

designs.

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