Datasheet

18
BIG AVR 6 Development System
MikroElektronika
page
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The real-time clock is widely used in alarm devices, industrial controllers, consumer devices etc. Thanks to the DS1307 circuit, the
BIGAVR6 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 corrections for a leap year
- I
2
C serial interface
- automatic power-fail detection
- power consumption less than 500nA
The real-time clock provided on the BIGAVR6 development system is used to generate an interrupt at pre-set time. In order to
establish connection between the microcontroller and real-time clock it is necessary to set switches PD0 and PD1 on the DIP switch
SW14 as well as switch PD3 on the DIP switch SW15 to the ON position. Switches PE4, PE5 and PE6 may be optionaly used here.
)LJXUH: Real-time clock and microcontroller connection schematic
)LJXUH: 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
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