DDR2 SDRAM

Key Specifications/Special Features:

• 240-pin socket type dual inline memory module (DIMM)
• Lead-free
• 1.8V power supply
• Data rate: 667Mbps
• 1.8V (SSTL-18 compatible) I/O
• Double data rate architecture: two data transfers per clock cycle
• Bi-directional, differential data strobe (DQS and DQS) is 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
• Four internal banks for concurrent operation (component)
• Data mask (DM) for write data
• Burst lengths: 4, 8
• CAS latency (CL): 3, 4, and 5
• Auto precharge operation for each burst access
• Auto refresh and self refresh modes
• 7.8us average periodic refresh interval
• 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
• DQS can be disabled for single-ended data strobe operation

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Product Certifications:

Certificate Standard: CE Certificate Number: ATE20061988 Issue Date: 03-Oct-1998 Issued By: ACCURATE TECHNOLOGY CO. LTD Expiry Date: 03-Oct-2011 Scope/Range: Usb Flash drive,sd card,mp3/4

Certificate Standard: FCC Certificate Number: ATE20061991 Issue Date: 13-Oct-2006 Issued By: ACCURATE TECHNOLOGY CO. LTD Expiry Date: 13-Oct-2011 Scope/Range: SD Card,USB Drive,mp3/4 player

Certificate Standard: ROHS Certificate Number: A07011604R Issue Date: 07-Jan-2001 Issued By: AOV Testing Technology Co. Ltd Expiry Date: 07-Jan-2012 Scope/Range: MP3/4 Player,Usb Drive,SD Card