Static random access memory, cypress asynchronous sram, dual port sram

 CY62147EV30 Series 4 Mb (256 K x 16) 2.2 V 45 ns CMOS Static RAM - FBGA-48

https://www.futureelectronics.com/p/semiconductors--memory--RAM--static-ram--asynchronous/cy62147ev30ll-45bvxi-cypress-7432727