DS1302 real-time clock (RTC) module for Arduino, Raspberry Pi, and ESP8266

DS1302 real-time clock (RTC) module Real-time clock (RTC) module based on the DS1302 is a functional device for reading time and date with 1 second precision. The calendar is programmed through 2100. Thanks to a lithium battery for backup power, the circuit eliminates the risk of data loss when mains power is lost. A standard 2.54mm goldpin connector and I2C interface allow easy integration with many systems. The module is an excellent choice for ESP8266, ESP32, Arduino, and Raspberry Pi. Key technical specifications

* IC: DS1302 * Supply voltage: 2V to 5.5V * Battery holder: CR2032 * Battery type: CR2032 * Operating mode: 12/24 hour * Outputs: seconds, minutes, hours, day of week, month, and year * Update frequency: 1Hz (1 second) * Information: PM/AM * Dimensions: 43 x 23mm * Communication interface: I2C * Clock stabilization: 32.768kHz crystal Benefits

* Data integrity: The lithium battery provides backup power and protects against loss of time settings. * High precision: Accurate time reading to 1 second thanks to crystal stabilization. * Long-term operation: Built-in calendar programmed for maintenance-free operation through 2100. * Easy integration: Standard 2.54mm goldpin connector simplifies connection to breadboards and jumper wires. * Versatility: Wide supply voltage range from 2V to 5.5V supports a variety of systems. Example applications

* Data logging systems requiring accurate timestamps. * Home automation controllers running on time schedules. * Electronic clocks, alarms, and information displays. * Weather stations logging readings at set intervals. * IoT projects using microcontrollers to synchronize tasks.