Synchronous SRAM at 100 MHz — the bus-fit decision
The Infineon CY7C1371KV33-100AXI is a 18 Mbit synchronous SRAM from the NoBL™ family, organized as 512K x 36 and clocked at 100 MHz with an 8.5 ns access time.
100 MHz clock and 8.5 ns access — timing closure for the bus
At 100 MHz the clock period is 10 ns. With an 8.5 ns access time the part leaves 1.5 ns of setup margin for the controller in a back-to-back read sequence — enough for most FPGA or ASIC interfaces without inserting a wait state. The 36-bit word width maps cleanly to a 32-bit data bus plus four parity bits, which is why this density is common in packet-buffer and look-up-table applications.
Package and footprint — 100-TQFP (14x20 mm)
The tray shipping medium means the parts arrive in anti-static trays, not tape-and-reel — factor that into your pick-and-place feeder setup if you plan high-volume assembly.