Tiny RTC DS1307 Real Time Clock I2C Module

The DS1307 is a low power, with 56 bytes of non-volatile RAM BCD code clock calendar real-time clock chip, the address and data transmission through the two-wire bidirectional serial bus, the chip can be seconds, minutes, hours and other information , the number of days in each month can be adjusted automatically. And there is a leap year compensation function. AM / PM flag determines clock work 24-hour or 12-hour mode, the chip has a built-in power-sense circuit, brownout detection and battery switching function.
Module Feature:

• DS1307 I2C real-time clock chip (RTC)
• 24C32 32K I2C EEPROM memory
• Using LIR2032 rechargeable lithium battery (not included) with charging circuit. (Do not charge if used with CR2032!)
• Fully charged, it can provide 1 year lifetime
• Compact design, 27x28x8.4mm
• Leads to the a DS1307 clock pin, to provide the clock signal for the MCU
• Can be cascaded to other I2C devices
• Weight : 0.008 kg

DS1307 Feature:

• Can account seconds, hours, minutes, monthly number of days, months, days of the week count with leap year compensation function. Record the year on line 2100
• 56 bytes of non-volatile RAM
• Two-wire serial interface
• Programmable square-wave output
• Automatic power-down detection and switching circuit
• In battery backup mode, power consumption is less than 500nA
• Weight : 0.008 kg

NOTE:BATTERY NOT INCLUDED