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EBE21RD4AGFB - 2GB Registered DDR2 SDRAM DIMM

Datasheet Summary

Description

Pin name A0 to A13 A10 (AP) BA0, BA1 DQ0 to DQ63 CB0 to CB7 /RAS /CAS /WE /CS0, /CS1 CKE0, CKE1 CK0 /CK0 DQS0 to DQS17, /DQS0 to /DQS17 SCL SDA SA0 to SA2 VDD VDDSPD VREF VSS ODT0, ODT1 /RESET Par_In 2 2 www.DataSheet4U.com Function Address input Row address Column address Auto precharge Bank

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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Datasheet Details

Part number EBE21RD4AGFB
Manufacturer Elpida Memory
File Size 241.54 KB
Description 2GB Registered DDR2 SDRAM DIMM
Datasheet download datasheet EBE21RD4AGFB Datasheet
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PRELIMINARY DATA SHEET www.DataSheet4U.com 2GB Registered DDR2 SDRAM DIMM EBE21RD4AGFB (256M words × 72 bits, 2 Ranks) Specifications • Density: 2GB • Organization  256M words × 72 bits, 2 ranks • Mounting 36 pieces of 512M bits DDR2 SDRAM sealed in FBGA • Package: 240-pin socket type dual in line memory module (DIMM)  PCB height: 30.0mm  Lead pitch: 1.0mm  Lead-free (RoHS compliant) • Power supply: VDD = 1.8V ± 0.1V • Data rate: 667Mbps/533Mbps/400Mbps (max.) • Four internal banks for concurrent operation (components) • Interface: SSTL_18 • Burst lengths (BL): 4, 8 • /CAS Latency (CL): 3, 4, 5 • Precharge: auto precharge operation 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.
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