RTC DS1307 IC

• The DS1307 is a low power Full Binary (BCD) Real Time Clock (RTC) IC with 56 bytes of SVRAM that communicates through I2C Protocol. The IC can work from directly supply on Vcc and switch to Battery automatically when required.
• The memory which is used in DS1307 is NV SRAM. NV SRAM is basically a non-volatile random access memory. In working, NV SRAM is quite similar to static random access memory(SRAM).
• The protocol on which DS1307 works is I2C. I2C is a single line protocol in which data is transferred bit by bit along a single wire.

Pin Configuration

• Pin 1,2(X1,X2) Crystal Oscillator should be connected to these pins
• Pin 3(V-Bat)Connected to Positive terminal of the battery
• Pin 4(Gnd)Ground pin of the IC
• Pin 5,6(SCL,SDA) Pins for I2C communication with CPU
• Pin 7(SQW/Out) Square wave output driver pin to obtain square wave frequencies
• Pin 8(Vcc) Powers the IC typically 5V

Applications

• Robotics
• Gaming
• Servers
• Computer Peripherals
• GPS
• Utility power meters