CY7C0837AV, CY7C0830AV CY7C0831AV, CY7C0832AV CY7C.
Cypress Semiconductor
CY7C0831AV - Synchronous Dual-Port RAM
CY7C0837AV, CY7C0830AV CY7C0831AV, CY7C0832AV CY7C0832BV, CY7C0833AV FLEx18™ 3.3V 64K/128K x 36 and 128K/256K x 18 Synchronous Dual-Port RAM Features .