The CAT28C16AN-90 is an Electrically Erasable Programmable Read-Only Memory (EEPROM) chip manufactured by Catalyst Semiconductor Inc. It is a 32-pin Plastic Leadless Chip Carrier (PLCC) device with an operating temperature range of 0° to 70°C. It is a parallel EEPROM device with a 5V power supply and Surface-Mount Technology (SMT) mounting. The CAT28C16AN-90 has a total memory size of 2K x 8 bits, featuring high speed access time of 90 ns and organized as two pages of 1024 bytes. Additional features include byte, page, sector and device write operations, plus a Self Programming functionality, supporting data retention of over 100 years.