The CAT25128VI-GT3 is an ON Semiconductor EEPROM with 128K SPI Serial CMOS EEPROM memory. This device is a Serial Peripheral Interface (SPI) EEPROM with a 25-pin dual row, 0.5 mm pitch TSSOP package. It is designed for fast addressing of up to 4 MB of data in a serial bus format, while providing higher levels of device-level security. The device has a pin count of 25, operates over the range of -40°C to +85°C and has a power requirement of 200 mA. The CAT25128VI-GT3 has an active current of 1.2 mA max, and a standby current of only 3µA. It has a maximum serial data rate of 1 MHz, which is further enhanced by an on-chip 8-bit register that allows a total data pattern of up to 8K bytes. The device has an endurance of 10,000 write cycles, and a data retention of 20 years. It provides high levels of write protection and security, utilizing a password-protected write protection operation. The CAT25128VI-GT3 is an ideal solution for applications such as medical, consumer, automotive, and industrial devices which require a high level of security.