The 166 MHz clock rate defines the maximum bus frequency for back-to-back pipelined reads. The 3.5 ns access time is the delay from the clock edge to valid data on the outputs.
256K x 32 organization — why it matters for the BOM
A 32-bit wide data bus means one chip covers the full memory interface of a 32-bit CPU or DSP without byte-lane multiplexing. This reduces component count versus narrower x8 or x16 parts and simplifies the PCB routing. The 165-ball FBGA (13x15 mm) footprint is sized for a multi-layer board with buried vias; the industrial temperature grade qualifies it for environments where ambient heat and airflow are marginal.
Lifecycle — obsolete, sourced to order
No official successor is listed.