The CY62147CV30LL-70BAI is a Cypress MoBL® asynchronous SRAM organized as 256K x 16, delivering 4 Mbit of volatile storage with a 70 ns access time. That 70 ns figure sets the window for the host controller to assert chip select, read the address, and have valid data on the bus — a 70 ns part needs a controller that can tolerate that latency without wait states or with a single inserted wait.
The RoHS compliance status is listed as non-compliant, so verify your assembly's exemption or waiver if your process requires RoHS.
48-TFBGA — layout and reflow considerations
The package is a 48-ball TFBGA measuring 7x8.5 mm (the supplier device package is 48-FBGA). The MoBL® series is known for low standby current, which matters if this SRAM sits on a battery-backed rail — the 2.7V minimum supply allows operation down near the battery's end-of-life voltage.
