550 MHz QDR II+ SRAM for high-throughput datapaths
QDR II+ eliminates the bus-turnaround dead cycle that standard synchronous SRAMs incur when switching between read and write operations, so the datapath can sustain back-to-back transactions at the full clock rate. This matters in network packet buffers, test equipment capture memories, and radar/beamforming systems where every clock cycle carries payload data and a single idle cycle costs throughput. The 165-ball FBGA package (13x15 mm) keeps signal inductance low for the 550 MHz edge rates.
Commercial temperature grade — design-in boundary
This limits the part to indoor, controlled-environment equipment — server racks, lab instruments, telecom central offices with HVAC. If your design sees -40°C startup or an unvented enclosure, the industrial-temperature variant (CY7C2263KV18-550BZXI) is the correct fit. The supply rails, package, and footprint are identical between the two suffix options, so the PCB layout stays the same.
Infineon (formerly Cypress) continues to manufacture this part, so there is no last-time-buy deadline driving the procurement decision.