BUY K6R4016C1D-TC10 https://www.utsource.net/itm/p/459777.html
256Kx16 Bit High Speed Static RAM5.0V Operating. Operated at Commercial and Industrial Temperature Ranges.
Description: K6R4016C1D-TC10 is a 16Mb (2M x 8bit) CMOS Static RAM manufactured by Samsung. Features: Low Power Consumption Fast Access Time: 10ns Single 3.3V Power Supply TTL Compatible Inputs and Outputs Fully Static Operation No Clock or Refresh Required Automatic Power Down High Reliability Low Standby Current JEDEC Standard Pinout Applications: Automotive Industrial Medical Networking Telecommunications Consumer Electronics Embedded Systems (For reference only)