The AT24C128C-XHM-T is a 128K Serial EEPROM device from Microchip. It consists of 16K x 8-bit memory configured as two blocks of 128K. It is operated through two-wire bus protocol and has an operating voltage range of 1.7V. The AT24C128C-XHM-T has multiple features that provide operations with low power consumption and high reliability, including a 1MHz Clock Speed, Wear Leveling, Dual Byte Write Enable, and a Serial Peripheral Interface (SPI). Other features include Write Protection, Endurance up to 10 million cycles, and data retention greater than 10 years. It is also available in several packages. These include TSSOP20, UDFN8, and SO8.