DATA SHEET
512M bits DDR2 SDRAM
EDE5104AGSE (128M words
×
4 bits)
EDE5108AGSE (64M words
×
8 bits)
Specifications
•
Density: 512M bits
•
Organization
⎯
32M words
×
4 bits
×
4 banks (EDE5104AGSE)
⎯
16M words
×
8 bits
×
4 banks (EDE5108AGSE)
•
Package: 60-ball FBGA
⎯
Lead-free (RoHS compliant)
•
Power supply: VDD, VDDQ
=
1.8V
±
0.1V
•
Data rate: 667Mbps/533Mbps/400Mbps (max.)
•
1KB page size
⎯
Row address: A0 to A13
⎯
Column address: A0 to A9, A11 (EDE5104AGSE)
A0 to A9 (EDE5108AGSE)
•
Four internal banks for concurrent operation
•
Interface: SSTL_18
•
Burst lengths (BL): 4, 8
•
Burst type (BT):
⎯
Sequential (4, 8)
⎯
Interleave (4, 8)
•
/CAS Latency (CL): 3, 4, 5
•
Precharge: auto precharge option for each burst
access
•
Driver strength: normal/weak
•
Refresh: auto-refresh, self-refresh
Features
•
Double-data-rate architecture; two data transfers per
clock cycle
•
The high-speed data transfer is realized by the 4 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
•
Off-Chip-Driver Impedance Adjustment and On-Die-
Termination for better signal quality
•
Programmable RDQS, /RDQS output for making
×
8
organization compatible to
×
4 organization
•
/DQS, (/RDQS) can be disabled for single-ended
Data Strobe operation
•
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
Document No. E0715E50 (Ver. 5.0)
Date Published October 2006 (K) Japan
Printed in Japan
URL: http://www.elpida.com
©Elpida
Memory, Inc. 2005-2006
ELPIDA [ ELPIDA MEMORY ]
