Additional Information:
Manufacturer:          Adafruit Industries
Manufactured In:       United States
Mfg Part Number:        3295
Recommended Skills:
Soldering Skill:         Beginner
Prototyping Skill:    Beginner
Programming Skill:        Beginner
Warranty & Returns
Warranty Policy:     30 Day Warranty
Return Policy:      14 Day Unopened / Unused

Adafruit PCF8523 RTC Assembled Breakout Board



This is a simple little real time clock (RTC) breakout board based on the PCF8523 chipset. The breakout allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. It is perfect for datalogging, clock-building, time stamping, timers and alarms, etc.

The PCF8523 is a simple, low cost, real time clock (RTC) chip. Unlike the fancier (and much more expensive) RTCs out there, this chip is not temperature compensated and may lose or gain up to 2 seconds a day. If you need a more accurate RTC we do recommend looking at the DS3231 instead.

This breakout uses a CR1220 battery. Due to shipping regulations, a battery is not included


  • Length: 25.8mm/1.02in
  • Height: 5mm/0.2in
  • Width: 21.8mm/0.86in
  • This board/chip uses I2C 7-bit address 0x68


Using an RTC with Raspberry Pi: https://learn.adafruit.com/adding-a-real-time-clock-to-raspberry-pi

Arduino Library: https://github.com/adafruit/RTClib

In stock (can be backordered)

SKU: BOB-089. Category: . Tags: , , .
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