Cypress Semiconductor has introduced monolithic SRAMs, the new members of its 65nm SRAM family. The new 144Mbit CY7C16xxKV18 QDRII, QDRII+, DDRII and DDRII+ memories leverage 65nm process technology developed with foundry partner UMC. They feature a fast available clock speed of 550MHz and a total data rate of 80 Gbit/s in a 36bit I/O width QDRII+ device, and consume less power. They are suitable for networking applications, including Internet core and edge routers, fixed and modular Ethernet switches, 3G base stations and secure routers, and also enhance the performance of medical imaging and military signal processing systems. The devices are pin compatible with 90nm SRAMs, enabling networking customers to increase performance and double address table or packet buffer size while maintaining the same board layout.
The 65nm QDR and DDR SRAMs consume less dynamic current consumption. The QDRII+ and DDRII+ devices have ODT (On-Die Termination), which improves signal integrity, reduces system cost and saves board space by eliminating external termination resistors. The 65nm devices use a PLL (phase locked loop) instead of a DLL (delay locked loop), which enables a wider data valid window to simplify board-level timing closure and enhance compatibility with third-party processors.
