NoBL architecture eliminates the dead cycles between read and write operations that plague conventional synchronous SRAMs, allowing back-to-back transactions at the full 200 MHz clock rate. The 3.2 ns access time gives the system designer a tight but workable timing budget for high-speed bus interfaces like network processors, DSP farms, and high-end FPGA frame buffers.
200 MHz clock and 3.2 ns access — the timing reality
At 200 MHz the clock period is 5 ns. With a 3.2 ns access time measured from the clock edge, the data output settles with about 1.8 ns of setup margin before the next clock edge — workable for a point-to-point trace on a well-controlled PCB, but tight for heavily loaded buses. The 2.5V supply keeps I/O levels compatible with JEDEC SSTL-2 or HSTL-class interfaces, though the supply tolerance (2.375V to 2.625V) means the regulator should be set to 2.5V ±1% to avoid eating into timing margin at the low end.
If you are reading this page to fill a BOM line for an existing design, treat this as a last-time-buy procurement: secure your lifetime buy quantity now, because once the remaining distributor inventory is consumed, the only channel will be the open market. A pin-compatible drop-in from the same NoBL family may exist at a different density or speed grade, but verifying the exact footprint and timing compatibility against the original design requires comparing the datasheet pinout and AC timing tables — something the repair bench should do before committing a swap.
Package and footprint — 100-pin TQFP
The board footprint should follow the JEDEC MO-136 reference. Decoupling: place at least one 0.1 µF ceramic per supply pin pair close to the package, plus a 10 µF bulk cap within 10 mm of the VDDQ pins. The 2.5V core supply and the I/O supply are the same rail on this part, so no separate VDDQ regulator is needed — but the single supply means all switching noise couples directly into the core.
Sourcing this part — the procurement bottom line
If you have a BOM line that needs filling, send the quantity and target date code; we will quote what is actually in the pipeline, including any remaining factory LTB allocation if the window is still open.