36 Mbit QDR II+ SRAM at 550 MHz — what the clock rate buys you
The 550 MHz clock rate means the device delivers back-to-back read and write transactions at double data rate — each clock edge transfers a 36-bit word, so the peak bandwidth sits well above what a single-data-rate SRAM can sustain. This matters when the FPGA or ASIC on the other side of the bus needs to fill a large cache line without inserting dead cycles for bus turnaround.
Supply rail and temperature grade — where this part fits
If the system lives in a climate-controlled rack or lab bench, the temp grade is fine; anything with an ambient above 70°C needs a wider-range variant.
The device comes in a 165-ball FBGA measuring 13x15 mm (supplier device package 165-FBGA). That is a fine-pitch BGA — expect 1.0 mm ball pitch typical for this ball count and body size. The board needs a via-in-pad or microvia process for routing the 36-bit data bus plus address and control lines. The shipping medium is tray, not tape-and-reel, so factor that into the pick-and-place feeder setup.