BUY X28HC256JM-15 https://www.utsource.net/itm/p/1493913.html
5 Volt, Byte Alterable E2PROM
Description: The X28HC256 is a high performance CMOS static RAM organized as 262,144 words of 8 bits each. Features: - Operating Voltage Range: 3.0-5.5V - Industrial and Commercial Temperature Ranges Available - Low Power Consumption - High Speed-28ns - Access Times 90ns - Fully Static Operation - Easy Memory Expansion - Package Options: PLCC, SOJ, TSOP - Single 5V ± 10% Power Supply - CMOS for Low Power Dissipation Applications: The X28HC256 is suitable for most applications in which high speed and low power dissipation are desired. This includes use in embedded applications, communications systems, point of sale terminals, instrumentation, process control and automotive systems. (For reference only)