DS1307N Real Time Clock (RTC) IC DIP-8 Package

It's a DS1307N Real Time Clock (RTC) IC. The DS1307N is a Real-Time Clock (RTC) IC (Integrated Circuit) manufactured by Maxim Integrated. The DS1307N is a popular RTC chip commonly used in electronic projects, including embedded systems, microcontrollers, and Arduino-based applications. The DS1307N provides accurate timekeeping functions and has a built-in battery backup that allows it to maintain the time even when the main power is disconnected. The communication with the DS1307N is achieved through the I2C (Inter-Integrated Circuit) bus, which is a popular serial communication protocol used for connecting peripheral devices to microcontrollers and other integrated circuits. The DS1307N has a built-in power supply switch-over circuitry that allows it to operate on a backup battery (usually a CR2032 coin cell) when the main power is disconnected. This ensures that the RTC continues to keep track of time.