The CAT28C256GA-15 is an electronically erasable programmable read-only memory (EEPROM) manufactured by Catalyst Semiconductor Inc. It features a parallel interface, and is packaged in a small outline surface mount (SMD) package known as PLCC32, making it a great choice for tight spaces. It operates on a supply voltage of 5V and has an operating temperature range of -40 to 105°C. The device has an access time of 140ns, and density of 32kb. It is a non-volatile memory, meaning it retains data even when power is removed. The CAT28C256GA-15 is an ideal choice for applications that require data storage and need to operate in a wide temperature range.