The Cypress CY7C1513KV18-300BZI is a 72 Mbit synchronous QDR II SRAM organized as 4M × 18 bits, clocked at 300 MHz. QDR II architecture delivers separate read and write data ports, eliminating the bus-turnaround dead cycles that single-port SRAMs incur — back-to-back read and write operations happen every clock cycle. For a system architect sizing a high-throughput data buffer (network switch, baseband processor, test equipment), the 300 MHz clock translates to a peak bandwidth of roughly 2.7 GB/s on the 18-bit bus, assuming double-data-rate operation on both ports. That is the number that decides whether this part clears the timing budget or forces a wider bus.
Industrial temperature grade — where it runs
The 165-ball FBGA (13×15 mm) footprint demands a controlled-impedance PCB stack-up; the fine-pitch BGA balls need via-in-pad or microvias for fanout on a standard four-layer board.
Cypress (now part of Infineon) no longer manufactures this density and speed grade in the QDR II family.