15 ns asynchronous SRAM for 16-bit bus systems
The CY7C1021CV33-15ZXCT: It uses a parallel memory interface and comes in a 44-TSOP II surface-mount package. The 15 ns access time sets the read/write cycle ceiling — the memory controller must respect this window when strobing the chip enable and output enable lines. For a 16-bit data bus running at 33 MHz, the 30 ns cycle time (2× access) is tight but workable with careful trace-length matching.
Obsolete — sourcing through surplus channels
The commercial temperature grade (0°C to 70°C) limits deployment to indoor, controlled environments — not suitable for extended industrial or automotive ranges without qualification testing.
The 0.80 mm lead pitch requires standard SMT soldering profiles; no exposed pad means thermal management relies on the board copper and airflow.