Datasheet

PICPLC16 v6 Development System

MikroElektronika

page

11.0. Real-Time Clock (RTC)

As a result of the built-in DS1307 circuit, the PICPLC16 v6 development system is capable of keeping the real time. The main features

of the real-time clock are as follows:

- providing information on seconds, minutes, hours, days in a week and dates including correction for a leap year

- I

C serial interface

- automatic power-fail detection

- power consumption less than 500nA

A real-time clock is widely used in alarm devices, industrial controllers, consumer devices etc. The real-time clock provided on the

PICPLC16 v6 development system is used to generate an interrupt at pre-set time. In order to establish connection between the

microcontroller and the real-time clock it is necessary to set switches 4, 5 and 6 on the DIP switch SW10 to the ON position.

Figure 11-2: Real-time clock and microcontroller connection schematic

Figure11-1: Real-time clock

Quartz-crystal provides

accuracy of the clock signal

used by the real-time clock

3V battery enables the operation

of the real-time clock when the

power supply is off

Real-time clock is connected to the microcontroller via pins RC4, RC3 and RB0