DS1302 Real Time Clock (RTC) socketed on breakout board (no battery)

  • $2.85

Will be in stock after

This handy RTC consists of a socketed DS1302 and a battery holder, all mounted neatly on a PCB that you can plug into your next breadboard project.

** Please note NO battery is included even though this is pictured **

DS1302 specifications

  • 31 x 8 RAM for scratchpad data storage
  • Serial I/O for low communication pin count
  • Wide Working Voltage: 2.0 ~ 5.5V
  • Single-byte and multi-byte transmission for clock or RAM data read / write
  • TTL-compatible (Vcc=5V)
  • Working Temperature: 0 to +70 Deg C
  • 32.768KHz crystal oscillator
  • Equipped with a 260mAh CR2032 button battery
  • Overall Size: Approx. 44 x 23 x 11mm


This board takes a CR2032 lithium battery which is NOT INCLUDED.  Take care with VCC and GND - if you reverse these the chip will be damaged.  

Hookup guide

  • Vcc - +5V / 3.3V
  • GND - GND
  • CLK - P01
  • DAT - P02
  • RST - P00

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