Sign In SHOP BLOG LEARN FORUMS 0 Items VIDEOS BREAKOUT BOARDS / CLOCKS / ADAFRUIT PIRTC - PCF8523 REAL TIME CLOCK FOR RASPBERRY PI Adafruit PiRTC PCF8523 Real Time Clock for Raspberry Pi PRODUCT ID: 3386 IN STOCK ADD TO CART 1 Also include 1 x CR1220 12mm Diameter - 3V Lithium Coin Cell Battery () 1-9 10-99 100+ ADD TO WISHLIST DESCRIPTION TECHNICAL DETAILS LEARN DESCRIPTION This is a great battery-backed real time clock (RTC) that allows your Raspberry Pi project to keep track of time if the power is lost. Perfect for data-logging, clock-building, time-stamping, timers and alarms, etc. Equipped with PCF8523 RTC, it works great with the Raspberry Pi and has native kernel support. Works perfectly with any Raspberry Pi (or similar single board linux computer) including the Pi 1, Pi 2, Pi 3, Pi Zero, A+, B+ etc. Fully assembled & tested PCB plugs directly into your Pi's GPIO pins - No soldering required! 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 a second or two per day. For a high-precision, temperature compensated alternative, please check out the DS3231 precision RTC. For setting up your Raspberry Pi to use the PiRTC, check out our detailed tutorial! New Products 1/25/2017 TECHNICAL DETAILS Product Dimensions: 21.0mm x 20.0mm x 12.0mm / 0.8" x 0.8" x 0.5" Product Weight: 2.2g / 0.1oz LEARN Adding a Real Time Clock to Raspberry Pi Keep time at all times with a real time clock Adafruit PCF8523 Real Time Clock Tick tock, got a clock? MAY WE ALSO SUGGEST... CR1220 12mm Diameter 3V Lithium Coin Cell Battery Adafruit DS1307 Real Time Clock Assembled Breakout ChronoDot - Ultra-precise Real Time Clock Adafruit RGB Matrix HAT + RTC for Raspberry Pi - Mini Adafruit PCF8523 Real Time Clock Assembled Breakout Adafruit DS3231 Precision RTC Breakout Adafruit Ultimate GPS Breakout - 66 channel w/10 Adafruit Ultimate GPS HAT for Raspberry Pi A+/B+/Pi 2 Pimoroni Button SHIM for Raspberry Pi Adafruit TPL5111 Low Power Timer Breakout DISTRIBUTORS Adafruit TPL5110 Low Power Timer Breakout EXPAND TO SEE DISTRIBUTORS CONTACT SUPPORT DISTRIBUTORS EDUCATORS JOBS FAQ SHIPPING & RETURNS TERMS OF SERVICE PRIVACY & LEGAL ABOUT US ENGINEERED IN NYC Adafruit (R) 4.9