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XDR DRAM

Under a licensing arrangement with US-based Rambus, Inc. (http://www.rambus.com/xdr/), Elpida was the first to commercialize a 1-gigabit XDR DRAM based on x32-bit configuration. The XDR product features an ultra-fast speed of 4GHz for a 16-gigabytes/second data transfer rate with a single device, making it ideal for such high-bandwidth, high-performance full HD-capable applications as game consoles, digital televisions and Blu-ray disc recorders and players.

Features

Highest pin bandwidth

  • 4.0/3.2Gbps Octal Data Rate (ODR) signaling
    4.0/3.2GHz data rate, octuple the data transfer rate of 500/400MHz system clock
  • Bi-directional differential RSL (DRSL)
    Flexible read / write bandwidth allocation
    Minimum pin count
  • On-chip termination
    Reduced system cost and routing complexity

Low power

  • 1.5V VDD
  • Small-swing I/O signaling (DRSL) (200mV)
  • Power-down support

Highest sustained bandwidth per DRAM device

  • 16.0GB/s (4.0D), 12.8GB/s (3.2C) peak data transfer rate (x32)
  • 8 banks:
    Bank-interleaved transactions at full bandwidth
  • Dynamic request scheduling
  • Early-read-after-write support for maximum efficiency
  • Zero overhead refresh

Package

  • 104-ball FBGA (x16)
    Ball-pitch 1.27mm / 0.8mm
  • 150-ball FBGA (x32)
    Ball-pitch 1.0mm / 1.0mm

XDR DRAM

Lineup

1Gbit

wordxbit Int. Banks Grade Part Number Class Supply Voltage Refresh Cycles Rev. Package Datasheet Simulation Model Product Status Remark
64M x 16 8 4.0D EDX1016BASE 4DA2-F 1.5V+/-0.075V 16ms A 104-FBGA Ask Ask MP Lead & Halogen Free
3.2C 3CA2-F Ask MP
32M x 32 8 3.2C EDX1032BASE 3CA2-F 1.5V+/-0.075V 16ms A 150-FBGA Ask Ask MP Lead & Halogen Free

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*Product Status: UD:Under Development, ES:Engineering Sample, MP:Mass Production, Ask:Contact Elpida sales to check the production status


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