72 Mbit QDR II SRAM in a 165-ball FBGA
The Infineon CY7C1512KV18-250BZXI is a 72 Mbit synchronous SRAM built on QDR II architecture, organized as 4M x 18. It clocks at 250 MHz with a parallel interface, delivering the read-write bandwidth needed for high-throughput data buffers in networking and telecom line cards.
QDR II architecture and clock performance
QDR II (Quad Data Rate) architecture transfers data on both edges of the clock for read and write ports independently, effectively doubling the throughput per pin compared to a single-data-rate SRAM at the same clock frequency. The 250 MHz clock rate yields a peak bandwidth that suits look-up tables, packet buffers, and traffic management engines. The 4M x 18 organization provides 72 Mbit of storage with an 18-bit data bus width per port, matching the word width common in network processor interfaces. The parallel memory interface keeps latency low for deterministic access patterns.