EBE21RD4AEFA-6 - Elpida Memory

EBE21RD4AEFA-6 2GB Registered DDR2 SDRAM DIMM

The EBE21RD4AEFA is a 256M words × 72 bits, 2 ranks DDR2 SDRAM Module, mounting 36 pieces of 512M bits DDR2 SDRAM sealed in FBGA package. Read and write operations are performed at the cross points of the CK and the /CK. This high-speed data transfer is realized by the 4bits prefetch-pipelined architecture. Data strobe (DQS and /DQS) both for read and write .

Features

• 240-pin socket type dual in line memory module (DIMM)  PCB height: 30.0mm  Lead pitch: 1.0mm  Lead-free (RoHS compliant)
• Power supply: VDD = 1.8V ± 0.1V
• Data rate: 667Mbps (max.)
• SSTL_18 compatible I/O
• Double-data-rate architecture: two data transfers per clock cycle
• Bi-directional, 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; center aligned with data for WRITEs
• Differential clock inputs (CK and /CK)
• DLL aligns DQ and DQS transitions with CK transitions
• Commands entere.