133 MHz clock and 6.5 ns access — timing margin for the bus
The 133 MHz clock frequency sets the maximum burst rate. The 6.5 ns access time is the time from clock edge to data valid.
18 Mbit density in 512K x 36 — wide-bus fit
The 512K x 36 organization fits 36-bit wide data buses. The 18 Mbit density suits moderate-size look-up tables or packet buffers.
Commercial temperature range — indoor equipment only
The storage temperature range exceeds the operating range, but that limit governs handling, not running.
The lifecycle status for this part is Active, indicating ongoing production and no imminent end-of-life.