DATA SHEET
2GB DDR3 SDRAM SO-DIMM
EBJ21UE8BFU0 (256M words
×
64 bits, 2 Ranks)
Specifications
•
Density: 2GB
•
Organization
256M words
×
64 bits, 2 ranks
•
Mounting 16 pieces of 1G bits DDR3 SDRAM sealed
in FBGA
•
Package: 204-pin socket type small outline dual in
line memory module (SO-DIMM)
PCB height: 30.0mm
Lead pitch: 0.6mm
Lead-free (RoHS compliant) and Halogen-free
•
Power supply: VDD
=
1.5V
±
0.075V
•
Data rate: 1600Mbps/1333Mbps (max.)
Backward compatible to1066Mbps/800Mbps/667Mbps
•
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, 10, 11
•
/CAS write latency (CWL): 5, 6, 7, 8
•
Precharge: auto precharge option for each burst
access
•
Refresh: auto-refresh, self-refresh
•
Refresh cycles
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
•
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; center-
aligned 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
•
Data mask (DM) for write data
•
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 pre-defined pattern
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
•
Programmable Output driver impedance control
Document No. E1642E30 (Ver. 3.0)
Date Published August 2010 (K) Japan
Printed in Japan
URL: http://www.elpida.com
Elpida
Memory, Inc. 2010
ELPIDA [ ELPIDA MEMORY ]
