This document describes a digital clock project using an 8051 microcontroller and DS1307 real-time clock integrated circuit (RTC). The DS1307 RTC provides seconds, minutes, hours, date, month and year information using I2C protocol. An 8051 microcontroller reads the time and date from the RTC and displays it on a 16x2 LCD module. The clock continues running even during power outages due to the backup power of the RTC, ensuring the real-time display is always accurate.

1. Digital Clock using 8051
Microcontroller
Presentation by ARUNKUMAR J

2. Digital Clock using 8051 Microcontroller

3. Digital Clock using 8051 Microcontroller
• In this project, we are going to demonstrate making a RTC Clock
using 8051 microcontroller.
• If you would like to do this project with Arduino, check this digital
clock using Arduino.
• The major component of this project is DS1307 which is a real
time digital clock IC. Lets know about this IC in detail.

4. RTC DS1307
• The DS1307 serial real-time clock (RTC) is a low-power, full binary-
coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM.
• This chip works on I²C protocol. 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.

5. RTC DS1307

6. • 8051 based Real time clock is a digital clock to display real time using a
RTC DS1307, which works on I2C protocol.
• Real time clock means it runs even after power failure. When power is
reconnected, it displays the real time irrespective to the time and
duration it was in off state. In this project we have used a 16x2 LCD
module to display the time in – (hour, minute, seconds, date, month and
year) format.
• Real time clocks are commonly used in our computers, houses, offices
and electronics device for keeping them updated with real time.

7. Digital Clock Circuit using 8051 and DS12C887

8. Digital Clock using 8051

9. Clock using Display and 8051 microcontroller