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The DS1307N serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C, bidirectional bus.
The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator.
The DS1307N has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply. Timekeeping operation continues while the part operates from the backup supply.
We carry the DS1307N chip from HGSEMI, a 100% compatible chip for a fraction of the price of a Maxim DS1307 chip.
Supply voltage: 4.5-5.5V
Backup battery voltage: 2-3.5V
Supply current (active):
I2C clock speed: 0-100kHz
Download datasheet HGSEMI DS1307N
Note: Multiple libraries are available through the library manager within the Arduino IDE. We highly recommend the one from Paul Stoffregen.
Mike
Reviewed in Canada on July 30, 2020
Work really well, good to have for all projects
Johnvk
Reviewed in Canada on February 20, 2020
used 1 of the 3 units I bought without success.could be my fault possibly wrong code or library I used.will have to try again later.
Michel Gaudet
Reviewed in Canada on January 27, 2020
Cristal is optinal. It not inclus
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