QDR II+ SRAM at 550 MHz — what the clock rate means for the memory bus
The CY7C1163KV18-550BZC is a 18 Mbit QDR II+ synchronous SRAM from Infineon, organized as 1M x 18. The 550 MHz clock rate means the memory delivers a read and a write data transfer on every clock edge — effectively two transactions per cycle — so the peak data rate into the controller is 1.1 G transfers per second on the 18-bit bus.
Package and board-fit for the layout engineer
The supply operates from 1.7 V to 1.9 V, so the core rail must be regulated to within that window — a 1.8 V nominal rail with ±5 % tolerance fits cleanly.
Active lifecycle — sourcing posture for the BOM
Infineon lists this part as Active (current production).