Elpida Memory, Inc.
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EBJ20RE4BAFA

Specifications

  • Density: 2GB
  • Organization
    -256M words x 72 bits, 1 rank
  • Mounting 18 pieces of 1G bits DDR3 SDRAM sealed in FBGA
  • Package: 240-pin socket type dual in line memory module (DIMM)
    -PCB height: 30.5mm
    -Lead pitch: 1.0mm
    -Lead-free (RoHS compliant)
  • Power supply: VDD = 1.5V +/- 0.075V
  • Data rate: 1333Mbps/1066Mbps/800Mbps (max.)
  • Eight internal banks for concurrent operation (components)
  • Interface: SSTL_15
  • Burst lengths (BL): 8 and 4 with Burst Chop (BC)
  • /CAS Latency (CL): 5, 6, 7, 8, 9
  • /CAS write latency (CWL): 5, 6, 7
  • Precharge: auto precharge option for each burst access
  • Refresh: auto-refresh, self-refresh
  • Refresh cycles
    -Average refresh period
     7.8 µs at 0'C <= TC <= +85'C
     3.9 µs at +85'C < TC <= +95'C
  • Operating case temperature range
    -TC = 0'C to +95'C

Features

  • Double-data-rate architecture; two data transfers per clock cycle
  • The high-speed data transfer is realized by the 8 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 transitions
  • Commands entered on each positive CK edge; data and data mask referenced to both edges of DQS
  • Posted /CAS by programmable additive latency for better command and data bus efficiency
  • On-Die-Termination (ODT) for better signal quality
    - Synchronous ODT
    - Dynamic ODT
    - Asynchronous ODT
  • Multi Purpose Register (MPR) for temperature read out
  • ZQ calibration for DQ drive and ODT
  • Programmable Partial Array Self-Refresh (PASR)
  • /RESET pin for Power-up sequence and reset function
  • SRT range:
    - Normal/extended
    - Auto/manual self-refresh
  • Programmable Output driver impedance control
  • 1 piece of registering clock driver and 1 piece of serial EEPROM (256 bytes EEPROM) for Presence Detect (PD)
  • Class B temperature sensor functionality with EEPROM

Ordering Information

Part Number Grade Package Datasheet IBIS Verilog
EBJ20RE4BAFA-DG-E PC3-10600(8-8-8) 78-FBGA E1253E30 ebj20re4bafa_ebd100_ibis100
EBJ20RE4BAFA-DJ-E PC3-10600(9-9-9) 78-FBGA E1253E30 ebj20re4bafa_ebd100_ibis100
EBJ20RE4BAFA-AE-E PC3-8500(7-7-7) 78-FBGA E1253E30 ebj20re4bafa_ebd100_ibis100
EBJ20RE4BAFA-AG-E PC3-8500(8-8-8) 78-FBGA E1253E30 ebj20re4bafa_ebd100_ibis100
EBJ20RE4BAFA-8A-E PC3-6400(5-5-5) 78-FBGA E1253E30 ebj20re4bafa_ebd100_ibis100
EBJ20RE4BAFA-8C-E PC3-6400(6-6-6) 78-FBGA E1253E30 ebj20re4bafa_ebd100_ibis100

User's Manual, Technical Note