DS1307 Real-Time Clock Module

Overview

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.

Specs

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