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EBE42FE8ACWR Datasheet, PDF (1/22 Pages) Elpida Memory – 4GB Fully Buffered DIMM | |||
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DATA SHEET
4GB Fully Buffered DIMM
EBE42FE8ACWR
Specifications
⢠Density: 4GB
⢠Organization
 512M words à 72 bits, 4 ranks
⢠Mounting 36 pieces of 1G bits DDR2 SDRAM sealed
in FBGA
⢠Package
 240-pin fully buffered, socket type dual in line
memory module (FB-DIMM)
PCB height: 30.35mm
Lead pitch: 1.00mm
 Advanced Memory Buffer (AMB): 655-ball FCBGA
 Lead-free (RoHS compliant)
⢠Power supply
 DDR2 SDRAM: VDD = 1.8V ± 0.1V
 AMB: VCC = 1.5V +0.075V/ â0.045V
⢠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
3.9µs at +85°C < TC ⤠+95°C
⢠Operating case temperature range
 TC = 0°C to +95°C
Features
⢠JEDEC standard Raw Card AE Design
⢠Industry Standard Advanced Memory Buffer (AMB)
⢠High-speed differential point-to-point link interface at
1.5V (JEDEC spec)
 14 north-bound (NB) high speed serial lanes
 10 south-bound (SB) high speed serial lanes
⢠Various features/modes:
 MemBIST and IBIST test functions
 Transparent mode and direct access mode for
DRAM testing
 Interface for a thermal sensor and status indicator
⢠Channel error detection and reporting
⢠Automatic DDR2 SDRAM bus and channel
calibration
⢠SPD (serial presence detect) with 1piece of 256 byte
serial EEPROM
Note: Warranty void if removed DIMM heat
spreader.
Performance
System clock
frequency
167MHz
FB-DIMM
Speed grade
PC2-5300F
Peak channel
throughput
8.0GByte/s
DDR2 SDRAM
FB-DIMM link data rate
4.0Gbps
Speed Grade
DDR data rate
DDR2-667 (5-5-5) 667Mbps
Document No. E1386E10 (Ver. 1.0)
Date Published October 2008 (K) Japan
Printed in Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2008
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