Número de pieza	Fabricante / Marca	Breve descripción
AT28C256-15TU-T	Microchip Technology	IC EEPROM 256K PARALLEL 28TSOP
AT28C256-15UI	ATMEL / MICROCHIP	AT28C256-15UI ATMEL DIP
AT28C256-15UM	ATMEL / MICROCHIP	AT28C256-15UM ATMEL PGA
AT28C256-15UM/883	Microchip Technology	IC EEPROM 256K PARALLEL 28CPGA
AT28C256-15UM/883-610	Microchip Technology	IC EEPROM 256K PARALLEL 28CPGA
AT28C256-15UM/883-815	Microchip Technology	IC EEPROM 256K PARALLEL 28CPGA