CY7C028-15AXI

The Cypress Semiconductor CY7C028-15AXI is a 5V 64K x 16 asynchronous dual-port static RAM within the CY7C027/028 family, providing independent simultaneous read/write access for two processing elements in embedded digital systems. This device delivers a fast 15 ns access time and integrates on-chip arbitration with semaphore flags to manage contention without external logic. It operates across an industrial temperature range of -40°C to +85°C and is housed in a compact TQFP package, offering a space-efficient, RoHS-compliant surface-mount solution suitable for densely populated boards. The dual-port architecture is fully asynchronous, allowing each port to function on independent clocks, which eliminates the need for synchronizers in mixed-speed designs.

Engineers commonly deploy this memory in industrial automation controllers, aerospace flight systems, defense mission computers, and high-reliability networking or instrumentation platforms where processors must exchange data buffers, share look-up tables, or coordinate real-time tasks without latency penalties. The wide 16-bit organization supports efficient inter-processor communication in DMA subsystems and video/graphics pipelines. From a procurement perspective, the CY7C028-15AXI is a mature Cypress product without a /883 or MIL designation, so its industrial rating makes it appropriate for non-rad-hard military and harsh industrial environments. Design teams should evaluate long-term lifecycle status and secure supply strategies, as components in this family may face eventual obsolescence.