Tiny RTC I2C 24C32 Memory DS1307 Electronic Clock Module Without Battery

Product description:
DS1307 I2C real-time clock chip (RTC)
24C32 32K I2C EEPROM memory
Adopt LIR2032 rechargeable lithium battery with charging circuit
Solve the problem that DS1307 with backup battery can not read and write.
After fully charged, it can provide DS1307 timing for 1 year.
Compact design, 27mm * 28mm * 8.4mm
Lead out the clock pin of DS1307, provide the clock signal for the one-chip computer.
Other I2C devices can be cascaded.
DS1307 is a low power consumption, 56-byte non-volatile RAM full BCD code clock calendar real-time clock chip, address and data transmission through a two-wire bidirectional serial bus, the chip can provide seconds, minutes, hours and other information , The number of days per month can be adjusted automatically. And there is a leap year compensation function. The AM / PM flag determines whether the clock works in 24-hour or 12-hour mode. The chip has a built-in power sensor circuit with power-down detection and battery switching functions.
DS1307 features:
It can count the number of seconds, hours, minutes, days in a month, days in a month, and a week, and has a leap year compensation function. Chronicle went online 2100.

56 bytes of non-volatile RAM
Two-wire serial interface
Programmable square wave output
Automatic power-down detection and switching circuit