EBD12RB8ALFB datasheet(1/17 Pages) ELPIDA

Part #	EBD12RB8ALFB

Description	128MB Registered DDR SDRAM DIMM

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Manufacturer	ELPIDA [Elpida Memory]

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

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Document No. E0235E10 (Ver. 1.0)

Date Published October 2001 (K) Japan

URL: http://www.elpida.com

Elpida Memory, Inc. 2001

C

DATA SHEET

128MB Registered DDR SDRAM DIMM

EBD12RB8ALFB (16M words

×××× 72 bits, 1 Bank)

Description

The EBD12RB8ALFB is a 16M

× 72 × 1 bank Double

Data Rate (DDR) SDRAM Module, mounted 9 pieces

of 128M bits DDR SDRAM (EDD1208ALTA) sealed in

TSOP package, 1 piece of PLL clock driver, 2 pieces of

register driver and 1 piece of serial EEPROM (2k bits

EEPROM) for Presence Detect (PD). Read and write

operations are performed at the cross points of the

CLK and the /CLK. This high-speed data transfer is

realized by the 2bits prefetch-pipelined architecture.

Data strobe (DQS) both for read and write are available

for high speed and reliable data bus design. By setting

extended mode register, the on-chip Delay Locked

Loop (DLL) can be set enable or disable. An outline of

the products is 184-pin socket type package (dual lead

out).

Therefore, it makes high density mounting

possible without surface mount technology. It provides

common

data

inputs

and

outputs.

Decoupling

capacitors are mounted beside each TSOP on the

module board.

Features

• 184-pin socket type dual in line memory module

(DIMM)

 Outline: 133.35mm (Length) × 30.48mm (Height) ×

4.00mm (Thickness)

 Lead pitch: 1.27mm

• 2.5V power supply (VDD/VDDQ)

• SSTL-2 interface for all inputs and outputs

• Clock frequency: 133MHz/100MHz (max.)

• Data inputs and outputs are synchronized with DQS

• 4 banks can operate simultaneously and

independently (Component)

• Burst read/write operation

• Programmable burst length: 2, 4, 8

 Burst read stop capability

• Programmable burst sequence

 Sequential

 Interleave

• Start addressing capability

 Even and Odd

• Programmable /CAS latency (CL): 2, 2.5

• 4096 refresh cycles: 15.6µs (4096/64ms)

• 2 variations of refresh

 Auto refresh

 Self refresh

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