1Mbit asynchronous SRAM in 48-FBGA — 15 ns access, 3V–3.6V rail
The CY7C1021BNV33L-15BAIT is a 1Mbit asynchronous SRAM from Infineon, organized as 64K x 16 bits, with a 15 ns access time and a 15 ns write cycle.
Infineon lists the CY7C1021BNV33L-15BAIT as Obsolete. Confirm the exact ball map and supply voltage range before committing a replacement.
Industrial temperature grade and 3V–3.6V rail
The 3V to 3.6V supply is a narrow window — a 2.5V or 5V-only board will need a regulator or a different memory variant. The 15 ns access time is the cycle-limiting spec for bus timing; a slower processor or a wait-state insertion may tolerate a 20 ns part, but a 10 ns part would be overkill unless the bus is already marginal.
48-FBGA footprint — layout and rework notes
The 48-FBGA (7x7) package has a 0.75 mm ball pitch typical for this density. If you are reworking a board that originally used this part, the moisture sensitivity level (MSL) should be confirmed from the date-code trace — FBGA packages often require a bake cycle before reflow if exposed to ambient humidity. The Tape & Reel delivery is standard for pick-and-place; no tube or tray option is listed.