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EBE41AF4A1QA Datasheet 4GB VLP Registered DDR2 SDRAM DIMM

Manufacturer: Elpida Memory

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Datasheet Details

Part number EBE41AF4A1QA
Manufacturer Elpida Memory
File Size 267.53 KB
Description 4GB VLP Registered DDR2 SDRAM DIMM
Datasheet download datasheet EBE41AF4A1QA Datasheet

Overview

PRELIMINARY DATA SHEET www.DataSheet4U.com 4GB VLP Registered DDR2 SDRAM DIMM EBE41AF4A1QA (512M words × 72 bits, 2 Ranks) Specifications • Density: 4GB • Organization  512M words × 72 bits, 2 ranks • Mounting 18 pieces of 2G bits DDR2 SDRAM with DDP (FBGA)  DDP: 2 pieces of 1Gb chips sealed in one package • Package: 240-pin very low profile registered dual in line memory module (VLP RDIMM)  PCB height: 18.3mm  Lead pitch: 1.0mm  Lead-free (RoHS compliant) • Power supply: VDD = 1.8V ± 0.1V • Data rate: 667Mbps (max.) • Eight internal banks for concurrent operation (components) • Interface: SSTL_18 • Burst lengths (BL): 4, 8 • /CAS Latency (CL): 3, 4, 5 • Precharge: auto precharge option for each burst access • Refresh: auto-refresh, self-refresh • Refresh cycles: 8192 cycles/64ms  Average refresh period 7.8µs at 0°C ≤ TC ≤ +85°C 3.

Key Features

  • Double-data-rate architecture; two data transfers per clock cycle.
  • The high-speed data transfer is realized by the 4 bits prefetch pipelined architecture.
  • Bi-directional differential data strobe (DQS and /DQS) is transmitted/received with data for capturing data at the receiver.
  • DQS is edge-aligned with data for READs; centeraligned with data for WRITEs.
  • Differential clock inputs (CK and /CK).
  • DLL aligns DQ and DQS transitions with CK transi.

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