The CY7C131-15JC: The device comes in a 52-lead PLCC (J-lead) surface-mount package, supplier device package 52-PLCC (19.13x19.13). Its dual-port architecture allows two independent buses to read from or write to the same memory array simultaneously, eliminating the need for external arbitration logic in shared-memory designs.
15 ns access time — arbitration latency in dual-port designs
In a dual-port SRAM, this spec directly affects the arbitration overhead when both ports contend for the same memory location. A 15 ns window means the part can keep up with moderate-speed processors without inserting wait states, provided the arbitration logic resolves contention within the same cycle.
52-PLCC footprint and rework considerations
The 52-PLCC package with J-leads (body 19.13 x 19.13 mm) is a legacy surface-mount form factor. The J-lead geometry requires a specific hot-air rework profile — the leads are hidden under the package body, so a standard gull-wing nozzle will not reach. Preheating the board before removal reduces the risk of pad lift.
If the end system sees ambient temperatures below freezing or above 70°C, a different dual-port SRAM with an industrial or military temperature grade is required.