DS1302

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DS1302 DIP.jpg

The DS1302 is a Real-Time Clock made by Dallas Semiconductor. It is designed to run on very low power (300nA at 2.0V); allowing it to run off a small Battery or Super capacitor for a long period of time. It counts seconds, minutes, hours, date of the month, month, day of the week, and the year with leap year compensation valid up to 2100. Serial communication is used for a fast and easy three wire interface to a microcontroller.

Contents

Hooking it up

Pinout for DIP and SOIC
Pinout for DS1302
  • Pin - Name - Function
  • 1 - VCC2 - Primary Power Supply
  • 2 - X1 - 32.768kHz Crystal
  • 3 - X2 - 32.768kHz Crystal
  • 4 - GND - Ground
  • 5 - CE - Chip enable (to microcontroller)
  • 6 - I/O - Bidirectional Data (to microcontroller)
  • 7 - SCLK - Serial Clock
  • 8 - VCC1 - Backup Power Supply

The VCC1 pin is used for a battery or capacitor.



Required Additional Components

Code

Availability



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