Hola!
"Canibalizando" una regrabadora de CD me he topado con una EEPROM AT18C16.....si, es pequeña (solo 2KB), pero mira que caracteristicas:
Features• Fast Read Access Time -
150 ns• Fast Byte Write -
200 μs or 1 ms• Self-Timed Byte Write Cycle
– Internal Address and Data Latches
– Internal Control Timer
– Automatic Clear Before Write
• Direct Microprocessor Control
– DATA POLLING
• Low Power
–
30 mA Active Current–
100 μA CMOS Standby Current• High Reliability
– Data Retention: 10 Years
• 5V ± 10% Supply
• CMOS & TTL Compatible Inputs and Outputs
• JEDEC Approved Byte Wide Pinout
• Commercial and Industrial Temperature Ranges
DescriptionThe AT28C16 is a low-power, high-performance Electrically Erasable and Programmable Read Only Memory with easy to use features. The AT28C16 is a 16K memory organized as 2,048 words by 8 bits. The device is manufactured with Atmel’s reliable nonvolatile CMOS technology.
Aqui la hoja de datos.