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EDD1232ACBH-6B Datasheet, PDF (1/52 Pages) Elpida Memory – 128M bits DDR SDRAM | |||
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PRELIMINARY DATA SHEET
128M bits DDR SDRAM
EDD1232ACBH-6B (4M words à 32 bits) Specifications
⢠Density: 128M bits
⢠Organization
 1M words à 32 bits à 4 banks
E⢠Package: 144-ball FBGA
 Lead-free (RoHS compliant) and Halogen-free
⢠Power supply: VDD, VDDQ = 2.5V ± 0.2V
⢠Data rate: 333Mbps (max.)
O⢠Four internal banks for concurrent operation
⢠Interface: SSTL_2
⢠Burst lengths (BL): 2, 4, 8
⢠Burst type (BT):
 Sequential (2, 4, 8)
L  Interleave (2, 4, 8)
⢠/CAS Latency (CL): 2.5, 3
⢠Precharge: auto precharge option for each burst
access
⢠Driver strength: weak/matched
P ⢠Refresh: auto-refresh, self-refresh
⢠Refresh cycles: 4096 cycles/32ms
 Average refresh period: 7.8µs
⢠Operating ambient temperature range
roduct  TA=0°Cto+70°C
Features
⢠Ã32 organization
⢠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. E1550E10 (Ver. 1.0) This product became EOL in March, 2010.
Date Published January 2010 (K) Japan
Printed in Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2010
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