The 93AA46C-I/SN is an EEPROM IC memory chip (electrically erasable programmable read-only memory) designed by Microchip. This chip features a 128 X 8 / 64 X 16 bit memory specification with memory organization of 8-bit mode, 16-bit mode and 24-bit mode. It also has a 3MHz maximum operating frequency and operates on a voltage range of 1.8V to 5.5V. This chip was specifically designed for use in extreme temperatures, having a functional temperature range of -40°C to +85°C. It comes in the SO8 package shape, typically used for surface mount applications with limited board space requirements. This chip is ideal for storing small amounts of non-volatile data.