The Cypress CY7C028V-25AXCT is a 1 Mbit dual-port asynchronous SRAM organized as 64K x 16 bits. It provides two independent ports with separate address, data, and control lines, allowing two bus masters — such as a DSP and an MCU, or two processors — to access the same memory array simultaneously. The 25 ns access time sets the bus timing window for arbitration-free reads and writes from either port.
This is fast enough to work with most 33 MHz to 40 MHz bus masters without wait states, provided the controller's address-to-data setup requirement is met. If the host controller runs above 40 MHz, you will need to budget for wait states or look at a faster dual-port SRAM.