Synchronous dual-port SRAM for shared-memory arbitration
The Cypress CY7C09279V-12AC is a 512Kbit synchronous dual-port SRAM organized as 32K words by 16 bits. It provides two independent ports with separate address, data, and control lines, allowing two bus masters (processors, DSPs, or ASICs) to access the same memory array without external arbitration logic. The 12 ns access time and 50 MHz clock rate support pipelined read/write operations in high-throughput shared-memory applications such as multiprocessor systems, telecom line cards, and video frame buffers.
12 ns access time — bus-margin budget
In a 50 MHz synchronous system (20 ns clock period), the 12 ns access leaves an 8 ns window for clock-to-output delay, setup time, and PCB trace skew. This margin is tight but workable with careful signal-integrity layout; a 10 ns or faster part would be needed if the bus is heavily loaded or the clock jitter is high.
32K x 16 organization — memory-map fit
The 32K x 16 organization means the part presents a 15-bit address bus and a 16-bit data bus. If your system uses a 32-bit data word, two of these devices can be paired in a 32-bit-wide configuration with shared address lines. The 512Kbit total density is suited for moderate-size shared buffers, mailboxes, or lookup tables — not for large frame stores.
Commercial temperature grade — environment limits
It is not qualified for outdoor, automotive, or industrial environments where the ambient temperature exceeds 70°C or drops below 0°C.
No official successor part number has been published for this specific speed and package variant. Buyers should verify date code and condition with their sourcing representative.