The CAT28C256G-12 is an EEPROM memory chip, manufactured by Catalyst Semiconductor, Inc, with a parallel connection. It is available in a PLCC32 case and can be mounted using Surface Mount Device (SMD). The chip has an operating temperature range of 0°C to 70°C and operates on a 5V power source. It is a 32K x8 bit configuration with access time of 120ns, nine optional power-down modes, 10MHz maximum bus frequency and -55°C to +125°C storage temperature range.