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EDE5104GBSA-5A-E Datasheet PDF - Elpida Memory, Inc

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EDE5104GBSA-5A-E Datasheet PDF : EDE5104GBSA-5A-E pdf     
EDE5108GBSA-4A-E image

The EDE5104GB is a 512M bits DDR-II SDRAM organized as 33,554,432 words × 4 bits × 4 banks.
The EDE5108GB is a 512M bits DDR-II SDRAM organized as 16,777,216 words × 8 bits × 4 banks. It packaged in 64-ball µBGA® package.

• 1.8V power supply
• Double-data-rate architecture: two data transfers per clock cycle
• Bi-directional, differential data strobe (DQS and /DQS) is transmitted/received with data, to be used in capturing data at the receiver
• DQS is edge aligned with data for READs: centeraligned 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
• Four internal banks for concurrent operation
• Data mask (DM) for write data
• Burst lengths: 4, 8
• /CAS Latency (CL): 3, 4, 5
• Auto precharge operation for each burst access
• Auto refresh and self refresh modes
• 7.8µs average periodic refresh interval
• 1.8V (SSTL_18 compatible) I/O
• Posted CAS by programmable additive latency for better command and data bus efficiency
• Off-Chip-Driver Impedance Adjustment and On-DieTermination 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.
• µBGA package is lead free solder (Sn-Ag-Cu)


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