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EDD1216AJTA Datasheet, PDF (1/52 Pages) Elpida Memory – 128M bits DDR SDRAM | |||
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DATA SHEET
128M bits DDR SDRAM
EDD1216AJTA (8M words à 16 bits)
Specifications
⢠Density: 128M bits
⢠Organization
 2M words à 16 bits à 4 banks
⢠Package: 66-pin plastic TSOP (II)
 Lead-free (RoHS compliant)
⢠Power supply: VDD, VDDQ = 2.5V ± 0.2V
⢠Data rate: 400Mbps/333Mbps/266Mbps (max.)
⢠Four internal banks for concurrent operation
⢠Interface: SSTL_2
⢠Burst lengths (BL): 2, 4, 8
⢠Burst type (BT):
 Sequential (2, 4, 8)
 Interleave (2, 4, 8)
⢠/CAS Latency (CL): 2, 2.5, 3
⢠Precharge: auto precharge option for each burst
access
⢠Driver strength: normal/weak
⢠Refresh: auto-refresh, self-refresh
⢠Refresh cycles: 4096 cycles/64ms
 Average refresh period: 15.6µs
⢠Operating ambient temperature range
 TA = 0°C to +70°C
Features
⢠Double-data-rate architecture; two data transfers per
clock cycle
⢠The high-speed data transfer is realized by the 2 bits
prefetch pipelined architecture
⢠Bi-directional data strobe (DQS) is transmitted
/received with data for capturing data at the receiver
⢠Data inputs, outputs, and DM are synchronized with
DQS
⢠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
Document No. E0972E30 (Ver. 3.0)
Date Published July 2007 (K) Japan
Printed in Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2006-2007
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