The CY7C027V-15AXIT is a 512Kbit dual-port asynchronous SRAM organized as 32K x 16, with a 15 ns access time. The dual-port architecture gives two independent ports simultaneous read/write access to the same memory array, which is the usual choice for shared-memory designs in multi-processor or FIFO-emulation applications. The 15 ns access means the part can keep up with a 66 MHz bus without inserting wait states, as long as the controller's output-hold timing has margin.
The 100-TQFP (14x14 mm) is a fine-pitch (0.5 mm) surface-mount package — reworkable with hot air if you have a stencil and a steady hand, but the fine pitch means the pad layout needs a clean solder mask and the part wants a preheat soak to avoid tombstoning.