Cypress, CY7C1041GN30-10ZSXI, Memory ICs, RAM, Static RAM, Asynchronous SRAM

 CY7C1041G30 Series 4 Mb (256 K x 16) 3.6 V 10 ns Static RAM - TSOP II-44

https://www.futureelectronics.com/p/semiconductors--memory--RAM--static-ram--asynchronous/cy7c1041gn30-10zsxi-cypress-7066295