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Elpida Memory - 512MB DDR2 SDRAM SO-DIMM

Numéro de référence EBE52UD6AFSA
Description 512MB DDR2 SDRAM SO-DIMM
Fabricant Elpida Memory 
Logo Elpida Memory 





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EBE52UD6AFSA fiche technique
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512MB DDR2 SDRAM SO-DIMM
EBE52UD6AFSA (64M words × 64 bits, 2 Ranks)
Description
The EBE52UD6AFSA is 64M words × 64 bits, 2 ranks
DDR2 SDRAM Small Outline Dual In-line Memory
Module, mounting 8 pieces of 512M bits DDR2
SDRAM sealed in FBGA (µBGA) package. Read and
write operations are performed at the cross points of
the CK and the /CK. This high-speed data transfer is
realized by the 4 bits prefetch-pipelined architecture.
Data strobe (DQS and /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.
This module provides high density mounting without
utilizing surface mount technology. Decoupling
capacitors are mounted beside each FBGA (µBGA) on
the module board.
Note: Do not push the components or drop the
modules in order to avoid mechanical defects,
which may result in electrical defects.
Features
200-pin socket type small outline dual in line memory
module (SO-DIMM)
PCB height: 30.0mm
Lead pitch: 0.6mm
Lead-free (RoHS compliant)
Power supply: VDD = 1.8V ± 0.1V
Data rate: 667Mbps/533Mbps/400Mbps (max.)
SSTL_18 compatible I/O
Double-data-rate architecture: two data transfers per
clock cycle
Bi-directional, differential data strobe (DQS and
/DQS) is transmitted/received with data, to be used in
capturing data at the receiver
DQS is edge aligned with data for READs: center-
aligned with data for WRITEs
Differential clock inputs (CK and /CK)
DLL aligns DQ and DQS transitions with CK
transitions
Commands entered on each positive CK edge: data
and data mask referenced to both edges of DQS
Four internal banks for concurrent operation
(Components)
Data mask (DM) for write data
Burst lengths: 4, 8
/CAS Latency (CL): 3, 4, 5
Auto precharge operation for each burst access
Auto refresh and self refresh modes
Average refresh period
7.8µs at 0°C TC ≤ +85°C
3.9µs at +85°C < TC ≤ +95°C
Posted CAS by programmable additive latency for
better command and data bus efficiency
Off-Chip-Driver Impedance Adjustment and On-Die-
Termination for better signal quality
/DQS can be disabled for single-ended Data Strobe
operation.
Document No. E0722E30 (Ver. 3.0)
Date Published July 2005 (K) Japan
Printed in Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2005

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