The DS1302S is an integrated circuit (IC) component designed by Maxim Integrated. It is a real-time clock (RTC) module that offers various features for timekeeping applications. Here is an overview and key features of the DS1302S:
1. Real-Time Clock: The DS1302S accurately keeps track of time with internal registers for seconds, minutes, hours, days, months, and years. It operates in either 24-hour or 12-hour format, with an optional AM/PM indicator.
2. Battery Backup: It comes with a built-in power-fail detect and switch circuit, which seamlessly switches the device to a backup power source (such as a coin cell battery) in case the main power supply is interrupted. This ensures uninterrupted timekeeping even during power outages.
3. Trickle Charger: To extend the backup battery's life, the DS1302S incorporates a trickle charger circuitry. It automatically charges the backup battery when the system is running on the main power supply, preventing its discharge and maintaining its capacity.
4. Serial Interface: Communication with the DS1302S is facilitated through a simple, three-wire interface. It enables easy integration with microcontrollers or other host devices. This minimalistic interface reduces the required pins and simplifies the overall system design
