Tiny RTC - DS1307 Time Module - Real Time Clock - I2C - Arduino

A module with a real-time clock and its own battery power supply. It allows you to read the time in the form of hours, minutes and seconds and date: month, day, year.

Specification:

Module with DS1307 real-time clock and backup battery power supply.
It allows you to read the time in the form of hours, minutes and seconds and date: month, day, year.
The communication interface is the I2C bus (SDA and SCL lines)
The data refresh rate is 1 Hz (1 second).
The battery attached to the module allows the system to be operated for up to 9 years without external power supply.
Data available:
Time: hour (AM, PM), minute, second
Date: month, day, year
An accurate calendar until 2100
The module has goldpin headers, enabling connection with any development kit.
LED signaling
Application for breadboards, Arduino etc.

Module parameters

Real time clock module RTC DS1307
Connected to serial 24C32 memory
Built-in 32.768kHz quartz
Chip DS1307,24C32
5V power supply built-in basket on (CR2032) - battery not included
Current consumption: less than 500 nA
Communication interface: I2C / TWI (SDA, SCL)
Refresh rate: 1 Hz (1 second)
Publicly accessible internal memory: 56 bytes
Dimensions: 28 x 28 mm

Pinout

The 5 V supply voltage is connected to the pin marked with the same symbol.
The I2C bus should be connected to the pins
SCL - clock line
SDA - data line.
The SQW pin is the square wave output with the selected frequency
GND is the mass of the system.