The DS1307 I2C RTC (Real Time Clock) module is a compact and convenient solution for adding real-time clock functionality to microcontroller-based projects. The module has a small form factor, measuring 28x27x9mm, making it suitable for various projects. Function: 1. Adopt CR2032 rechargeable lithium battery with charging circuit to solve the problem that DS1307 cannot read or write with spare battery. After fully charged, it can provide DS1307 timekeeping for 1 year. 2. It can count the seconds, hours, minutes, days of the month, month, and days of the week, and has a leap year compensation function. The annual limit is 2100. 3. Lead out the clock foot of DS1307 to provide the clock signal for the microcontroller. 4. Other 120 devices can be cas.
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