Function : 256K(32K x 8) paged CMOS EPROM
Maker : Atmel Corporation
The AT28C256 is a high-performance electrically erasable and programmable read only memory. Its 256K of memory is organized as 32,768 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 150 ns with power dissipation of just 440 mW. When the device is deselected, the CMOS standby current is less than 200 µA.
AT28C256-15PU Datasheet PDF
AT28C256, AT28C256-15DM/883, AT28C256-15FM/883, AT28C256-15JI, AT28C256-15JU