{"product_id":"ds3231-at24c32-iic-precision-rtc-module-arduino-memory","title":"DS3231 AT24C32 IIC Precision RTC Module for Arduino – 1\/5\/10pcs","description":"\u003ch2\u003eDS3231 AT24C32 IIC Precision Real-Time Clock Module for Arduino\u003c\/h2\u003e\n\u003cp\u003eTake your Arduino projects to the next level with the \u003cstrong\u003eDS3231 AT24C32 IIC Precision RTC Module\u003c\/strong\u003e. Featuring the highly accurate DS3231SN chip paired with 32K of AT24C32 EEPROM memory, this compact module delivers rock-solid timekeeping for microcontroller builds, data loggers, alarm systems, and embedded electronics projects. Communication is handled via the I²C (IIC) protocol, making it effortless to integrate with Arduino, Raspberry Pi, and other compatible platforms.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Precision DS3231SN RTC Chip\u003c\/strong\u003e — Temperature-compensated crystal oscillator (TCXO) ensures exceptional timekeeping accuracy across varying temperatures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAT24C32 EEPROM Memory\u003c\/strong\u003e — 32K bits of non-volatile I²C memory for storing configuration data, logs, or custom values in your project.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eI²C \/ IIC Interface\u003c\/strong\u003e — Simple 2-wire communication (SDA + SCL) for quick integration with Arduino Uno, Nano, Mega, Raspberry Pi, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Backup Support\u003c\/strong\u003e — Maintains accurate time even when the main power is disconnected (CR2032 battery slot included; battery not included).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact SMD Design\u003c\/strong\u003e — Small footprint ideal for space-constrained builds and breadboard prototyping.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Quantity Options\u003c\/strong\u003e — Available in 1, 5, or 10-piece bundles in yellow or blue PCB color to suit your project scale and preference.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Compatibility\u003c\/strong\u003e — Works seamlessly with popular Arduino libraries (RTClib, etc.) and is suitable for hobbyists and professional developers alike.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRTC Chip:\u003c\/strong\u003e DS3231SN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMemory Chip:\u003c\/strong\u003e AT24C32 (32Kbit EEPROM)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e I²C \/ IIC (SDA, SCL)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3.3V – 5V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCB Color Options:\u003c\/strong\u003e Yellow, Blue\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e SMD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Quantities:\u003c\/strong\u003e 1PCS, 5PCS, 10PCS\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDS3231 AT24C32 IIC RTC Module (quantity as selected)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino, Raspberry Pi \u0026amp; microcontroller time-keeping projects\u003c\/li\u003e\n  \u003cli\u003eDIY alarm clocks and digital clocks\u003c\/li\u003e\n  \u003cli\u003eData logging and timestamping applications\u003c\/li\u003e\n  \u003cli\u003eIoT sensor nodes requiring accurate time references\u003c\/li\u003e\n  \u003cli\u003eEmbedded systems needing non-volatile memory storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLooking for more components for your DIY electronics and making projects? Explore our related offerings:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ccb-flat-round-spacer-beads-diy-jewelry-making\"\u003e4\/6mm CCB Flat Round Spacer Beads – DIY Jewelry Making 100-200pcs\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the DS3231 AT24C32 IIC module and what does it do?\u003c\/h4\u003e\n\u003cp\u003eA: The DS3231 AT24C32 IIC module is a precision real-time clock (RTC) module designed for use with Arduino and other microcontrollers. It uses the DS3231SN chip to keep highly accurate time (hours, minutes, seconds, day, date, month, and year) and includes AT24C32 EEPROM memory for storing small amounts of persistent data. It communicates via the I²C protocol, making it very easy to wire and code.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the DS3231 module compatible with Arduino Uno, Nano, and Mega?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The DS3231 AT24C32 IIC module is fully compatible with Arduino Uno, Nano, Mega, and most other Arduino-family boards, as well as Raspberry Pi and similar platforms. Simply connect VCC, GND, SDA, and SCL, and use a standard library such as RTClib to get up and running quickly.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the module work if the main power is turned off?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The DS3231 module includes a CR2032 coin cell battery backup slot (battery not included). When a battery is installed, the module continues to track time accurately even when disconnected from your main power source, so your project always has the correct time on startup.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between the yellow and blue PCB versions?\u003c\/h4\u003e\n\u003cp\u003eA: Both yellow and blue PCB versions offer identical electrical performance and pin compatibility. The color difference is purely cosmetic — choose whichever suits your build aesthetics or makes it easier to identify modules in multi-board setups.\u003c\/p\u003e\n\u003ch4\u003eQ: How many modules can I order at once?\u003c\/h4\u003e\n\u003cp\u003eA: You can choose from 1-piece, 5-piece, or 10-piece bundles in either yellow or blue PCB color. Bulk bundles are great for classroom projects, prototyping labs, or whenever you need multiple time-keeping nodes in a larger system.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the DS3231 AT24C32 IIC module and what does it do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The DS3231 AT24C32 IIC module is a precision real-time clock (RTC) module designed for use with Arduino and other microcontrollers. It uses the DS3231SN chip to keep highly accurate time (hours, minutes, seconds, day, date, month, and year) and includes AT24C32 EEPROM memory for storing small amounts of persistent data. 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