The 24LC04BT/SN is a four-kilobit (4K) Electrically Erasable Programmable Read-Only Memory (EEPROM) device manufactured by Microchip. It has four I2C pinouts, including clock, data, power, and ground. It is used to store small amounts of data, such as program parameters, custom maps, and other information. It features a 1MHz I2C read/write speed, and its Serial Interrupt Output pin signals an interrupt when data is ready to write or read from the device. The 24LC04BT/SN also offers high reliability and is designed to withstand over 10 million write cycles.