The CAT28LV64NI-25 is a 32-pin PLCC SMD (Surface Mount Device) memory EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Catalyst Semiconductor Inc. It is a non-volatile, parallel memory with a typical access time of 120ns, and is capable of data retention up to 10 years. Its operating temperature range is from -40÷85°C. It is compatible with a wide range of voltage sources and offers reliable write/erase performance. Other features include 2Kbyte of memory, 10MHz SPI clock, and SPI or parallel interfaces.