The CY7C1415BV18-250BZC is a 36Mbit synchronous SRAM using QDR II architecture — separate read and write ports, each running at 250 MHz. Organized as 1M x 36, it operates on a 1.7V–1.9V supply.
The 250 MHz clock rate on both ports allows a new read and a new write every cycle. This eliminates bus-turnaround dead cycles.
36Mbit density and 1M x 36 organization
The 1M x 36 organization is a natural fit for 36-bit wide data paths common in networking ASICs and FPGA-based packet processors. Each access delivers 36 bits in parallel, matching the width of a typical MAC or DSP datapath without needing external muxing. The 36Mbit capacity is sized for moderate-size lookup tables, packet buffers, or coefficient storage — enough for a 10G Ethernet line card's FIFO, but not for deep frame buffering.
It belongs in indoor, temperature-controlled equipment — server rooms, telecom central offices, lab instrumentation — not in outdoor cabinets, engine bays, or factory floors where ambient can exceed 70°C.
No last-time-buy window remains open. There is no official pin-compatible successor from Infineon; any replacement would require a board respin and timing revalidation.