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Adafruit PCF8523 Real Time Clock Breakout Board - STEMMA QT / Qwiic

Name: Adafruit PCF8523 Real Time Clock Breakout Board - STEMMA QT / Qwiic
Brand: Adafruit
SKU: R218550
Price: 1241 INR
Availability: InStock

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AI Summary

Breakout Board for everyday users

The Adafruit PCF8523 Real Time Clock Breakout Board - STEMMA QT / Qwiic by Adafruit is a value-for-money breakout board designed for everyday users. It features Item Type: Breakout Board and Model No. / Name: PCF8523.

₹1,241

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Estimated delivery: 17 Aug – 31 Aug

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Quick Specs

Item Type: Breakout Board

Model No. / Name: PCF8523

Interface: 1 I2C

Length (mm): 25.4

Width (mm): 17.8

Weight (g): 1.5

Ideal For

Everyday convenience

SKU: robu-2631455Category: Breakout Board

About This Product

The Adafruit PCF8523 Real Time Clock Breakout Board - STEMMA QT / Qwiic by Adafruit is a value-for-money breakout board designed for everyday users. It delivers reliable performance at an accessible price.

Key Specifications

Item Type: Breakout Board
Model No. / Name: PCF8523
Interface: 1 I2C — compatible with modern devices
Length (mm): 25.4
Width (mm): 17.8
Weight (g): 1.5
Shipping Weight: 0.011 kg
Shipping Dimensions: 4 × 4 × 2 cm

Why Buy from Pricio?

Pricio sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.

The Adafruit PCF8523 Real Time Clock Breakout Board - STEMMA QT / Qwiic is a reliable, battery-backed RTC module that keeps accurate time even during power loss or reprogramming. Built around the PCF8523 chip, it’s perfect for clock-building, data logging, and time-stamping projects. Compatible with both 3.3V and 5V logic, it works seamlessly with Arduino, CircuitPython, and Raspberry Pi. The board features STEMMA QT / Qwiic connectors for easy plug-and-play I2C connections, plus it’s breadboard-friendly with included headers and mounting holes. Note: CR1220 coin cell battery is not included.

Features:

Battery-backed RTC with PCF8523 chip
3.3V/5V logic compatible
STEMMA QT connectors for no-solder I2C use
Works with Arduino, CircuitPython, Raspberry Pi
5+ years timekeeping with CR1220 battery (not included)
Breadboard-friendly with included header and mounting holes

Package Includes:

1 x Adafruit PCF8523 Real Time Clock Breakout Board

Setup Guide

Identify the pins

Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.

Wire to your microcontroller

Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.

Install libraries

In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.

Upload example sketch

Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.

Calibrate if needed

Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.