How can I use a 64KB SRAM/ External Flash memory IC with arduino

How can I use a 64KB SRAM/ External Flash memory IC with arduino which will be kept on forever with a coin cell (want to keep time w/o using a RTC breakout which costs too much in Indian rupees)

any ic you can suggest but with the complete tutorial how to read/write/connect with arduino ( ATMEGA328)

did you check old posts in the storage forum. There were quite extensive discussions about using SRAM before the holidays (~3months ago?)