SRAM memory card, Static SRAM manufacturers, SRAM chip programming

 CY7C1049 Series 4 Mbit (512 K words × 8 bit) 10 ns Static RAM - SOJ-36

https://www.futureelectronics.com/p/semiconductors--memory--RAM--static-ram--asynchronous/cy7c1049gn-10vxit-cypress-7083764