# PCF8523 Real Time Clock Assembled Breakout Board ## Description 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! ## Project Details - **Owner:** vasyl - **Created:** 12/15/2021 - **Last Updated:** 2/14/2022 - **Visibility:** Public - **Stars:** 1 - **Copies:** 1 ## Key Components ### ? — [LED-0805-Template](https://www.flux.ai/vasy_skral/led-0805-template.md) **Pins:** - A - K ### IC1 — [PCF8523T](https://www.flux.ai/vasyl/pcf8523t.md) - Datasheet URL: https://www.nxp.com/docs/en/data-sheet/PCF8523.pdf - Part Type: Integrated Circuit - Manufacturer Name: NXP - Manufacturer Part Number: PCF8523T **Pins:** - ~INT1/CLKOUT - OSCI - OSCO - SCL - SDA - VBAT - VDD - VSS ### J1 — [CR1220](https://www.flux.ai/vasyl/cr1220.md) - Part Type: Connector **Pins:** - ~ - ~ - ~ ### Y2 — [ABS25-32.768KHZ-T](https://www.flux.ai/vasyl/abs25-32768khz-t.md) - Manufacturer Name: Abracon - Datasheet URL: https://www.mouser.com/datasheet/2/3/abs25-35653.pdf - Manufacturer Part Number: ABS25-32.768KHZ-T - Part Type: Crystal **Pins:** - ~ - ~ *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vasyl/pcf8523-real-time-clock-assembled-breakout-board](https://www.flux.ai/vasyl/pcf8523-real-time-clock-assembled-breakout-board).* --- *Generated from [https://www.flux.ai/vasyl/pcf8523-real-time-clock-assembled-breakout-board](https://www.flux.ai/vasyl/pcf8523-real-time-clock-assembled-breakout-board)*