256K x 18 synchronous ZBT SRAM — 7.5 ns access at 3.3 V
The 71V3559S75BQ is a 4.5 Mbit synchronous SRAM organized 256K x 18, using a Zero Bus Turnaround (ZBT) architecture that eliminates dead cycles between read and write operations on a common data bus.
165-ball CABGA — 13x15 mm footprint
The 165-ball CABGA (13x15 mm) package is a fine-pitch BGA requiring controlled impedance PCB routing and careful decoupling at the supply balls — the 3.3 V core draws transient current during simultaneous read-write transitions that the bypass caps must supply locally.