The 93C46AX-I/SN part is an EEPROM (Electrically Erasable Programmable Read-Only Memory) chip manufactured by Microchip Technology. It is a Serial SPI (Serial Peripheral Interface) device with 1 Kb (1024) of memory, capable of storing up to 128 bytes of data. The 93C46AX-I/SN comes in an 8-pin PDIP (Plastic Dual Inline Package) and has a maximum operating temperature range of -40°C to +85°C. It has an access time of 450 ns, an endurance cycle of 10,000 and a data retention of 100 years. It can be used for storing small amounts of data that needs to be saved even when power is turned off.