Dual-port SRAM with 20 ns arbitration — what it buys you
The Infineon CY7C007A-20JXC is a 256Kbit asynchronous dual-port SRAM organised as 32K x 8, designed to give two independent bus masters simultaneous read/write access to a shared memory array without external arbitration logic. The dual-port architecture eliminates the dead cycles and arbitration overhead of a single-port SRAM with external muxing, which is why this class of part shows up in multiprocessor systems, video frame buffers, and telecom line cards where two controllers need to exchange data without stalling each other.
68-PLCC footprint — board-level fit
The CY7C007A-20JXC comes in a 68-lead PLCC (J-lead) package with a body size of 24.23 x 24.23 mm. That is a through-hole-compatible surface-mount footprint — the J-leads sit under the body, so inspection and rework are harder than with gull-wing packages. Plan for a PLCC socket if the board goes through rework cycles, or a dedicated hot-air nozzle for removal.
Obsolete — last-time-buy already passed
The last-time-buy window has closed, so the only available stock is surplus inventory held by independent distributors. When sourcing this part, date-code authenticity and traceability become the primary concern — verify that the parts are unused, from a reputable broker, and that the date codes align with the original production window.