Elpida Memory, Inc.
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EDD51321CBH

Specifications

  • Density: 512M bits
  • Organization
    -x 32 bits: 4M words x 32 bits x 4 banks
  • Package: 90-ball FBGA
    -Lead-free (RoHS compliant)
  • Power supply: VDD, VDDQ = 1.8V +0.15/-0.1V
  • Data rate: 166MHz/133MHz (max.)
  • 2KB page size
    -Row address: A0 to A12
    -Column address: A0 to A8
  • Four internal banks for concurrent operation
  • Interface: LVCMOS
  • Burst lengths (BL): 2, 4, 8
  • Burst type (BT):
    -Sequential (2, 4, 8)
    -Interleave (2, 4, 8)
  • /CAS Latency (CL): 3
  • Precharge: auto precharge option for each burst access
  • Driver strength: full/half/quarter
  • Refresh: auto-refresh, self-refresh
  • Refresh cycles: 8192 cycles/64ms
    -Average refresh period: 7.8 µs
  • Operating ambient temperature range
    -TA = -20'C to +85'C

Features

  • DLL is not implemented
  • Low power consumption
  • Double-data-rate architecture; two data transfers per clock cycle
  • Bi-directional data strobe (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)
  • Commands entered on each positive CK edge; data and data mask referenced to both edges of DQS
  • Burst termination by burst stop command and Precharge command

Ordering Information

Part Number Grade Package Datasheet IBIS Verilog
EDD51321CBH-6CTT-E DDR333(3-4-4) 90-FBGA E1094E30 edd51321cbh_100 edd51321cbh_166_0913_vp
EDD51321CBH-7ETT-E DDR266(3-4-3) 90-FBGA E1094E30 edd51321cbh_100 edd51321cbh_133_0913_vp

User's Manual, Technical Note