PICO RTC DS3231 - User Manual

Pico RTC DS3231
(https://www.waveshare.com/pico-
rtc-ds3231.htm)
Precision RTC Module for Raspberry Pi
Pico, Onboard DS3231 Chip
Pico RTC DS3231
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Overview
The Pico-RTC-DS3231 is an RTC expansion module
specialized for Raspberry Pi Pico. It incorporates high
precision RTC chip DS3231 and uses an I2C bus for
communication. More external sensors are allowed to be
connected thanks to the stackable design.
Features
Standard Raspberry Pi Pico header, supports
Raspberry Pi Pico series.
Onboard high precision RTC chip DS3231, with backup
battery holder.
Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day
of the Week, and Year with Leap-Year Compensation Valid Up to 2100.

PICO RTC DS3231 Specifications

General

Chip	DS3231
Interface	I2C
Operating Voltage	2.3V to 5.5V
Temperature Range	-40°C to +85°C
Battery	CR2032
Battery Backup	Yes
Battery Voltage	3V
RTC Clock Frequency	32.768 kHz
Type	Real-Time Clock
Accuracy	±2ppm from 0°C to +40°C, ±3.5ppm from -40°C to +85°C
Alarms	Two programmable alarms
Square Wave Output	1 Hz

Summary

Product Overview

Features

Highlights the module's capabilities, including header compatibility and precision RTC chip.

Technical Details

Specifications

Details operating voltage, backup voltage, and temperature range.

Pinout

Explains the function of each pin on the module for hardware interfacing.

Dimensions

Provides the physical measurements of the RTC module.

User Guide and Platform Integration

Setup Environment

Guides on preparing the development environment for Pico.

Raspberry Pi Usage

Instructions for integrating and using the module with Raspberry Pi.

CPython Usage

Guides for using the module with C and Python programming languages.

Windows Setup

Specific instructions for setting up and using the module on Windows.

Development Resources

Demo Codes and Software

Links to sample code and recommended development software.

Pico Tutorials

Series of tutorials covering MicroPython, C/C++ and general Pico topics.

Arduino IDE Setup

Steps to install Arduino IDE and configure it for Pico development.