This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for datalogging, clock-building, time stamping, timers and alarms, etc. Equipped with PCF8523 RTC - it can run from 3.3V or 5V power & logic!

Works great with an Arduino using our RTC library or with a Raspberry Pi (or similar single board linux computer)

  • PCB & header are included
  • Plugs into any breadboard, or you can use wires
  • Two mounting holes
  • Will keep time for 5 years or more

Note: This product does not come with a CR1220 coin cell battery. We recommend you purchase a coin cell battery to use with this product.

The PCF8523 is simple and inexpensive but not a high precision device. It may lose or gain up to 2 seconds a day. For a high-precision, temperature compensated alternative, please check out the DS3231 precision RTC. If you need a DS1307 for compatibility reasons, check out our DS1307 RTC breakout

Technical Details

  • Length: 25.8mm/1.02in
  • Width: 21.8mm/0.86in
  • Height: 5mm/0.2in
  • Weight: 2.3g/0.09oz
  • Mounting holes are 2.2mm (0.086in) diameter, 25mm (0.98in) apart
  • This board/chip uses I2C 7-bit address 0x68

Learn

Adding a Real Time Clock to Raspberry Pi

Adding a Real Time Clock to Raspberry Pi Keep time at all times with a real time clock

PCF8523 Real Time Clock Assembled Breakout Board [3295]

  • Brand: Adafruit
  • Product Code: ADA-3295
  • Reward Points: 6
  • Availability: Out Of Stock
  • £8.34

  • Ex Tax: £6.95
  • Price in reward points: 100

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