{"product_id":"ds3231-rtc-real-time-clock-module-for-arduino","title":"DS3231 High-Precision RTC Real-Time Clock Module for Arduino\/Pi","description":"\u003cp\u003e\u003cb\u003eOverview:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe DS3231 is an indispensable, high-accuracy I2C Real-Time Clock (RTC) module, featuring an integrated temperature-compensated crystal oscillator (TCXO) and crystal. Designed to maintain accurate time even when main power is removed, this module ensures your projects always have the correct time, date, and year information. It's ideal for Arduino, Raspberry Pi, and other microcontroller-based applications requiring reliable timekeeping.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Features:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eExceptional Accuracy:\u003c\/b\u003e Achieves an impressive \u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\" aria-hidden=\"true\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e±\u003c\/span\u003e\u003cspan class=\"mord\"\u003e2\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003eppm accuracy within the \u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\" aria-hidden=\"true\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e0\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003cspan class=\"mbin\"\u003e−\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e4\u003c\/span\u003e\u003cspan class=\"mord\"\u003e0\u003cspan class=\"msupsub\"\u003e\u003cspan class=\"vlist-t\"\u003e\u003cspan class=\"vlist-r\"\u003e\u003cspan class=\"vlist\"\u003e\u003cspan class=\"\"\u003e\u003cspan class=\"pstrut\"\u003e\u003c\/span\u003e\u003cspan class=\"sizing reset-size6 size3 mtight\"\u003e\u003cspan class=\"mbin mtight\"\u003e∘\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eC\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e range, resulting in an annual error of approximately one minute.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrated TCXO \u0026amp; Crystal:\u003c\/b\u003e Enhances long-term accuracy and reduces external component count.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBattery Backup:\u003c\/b\u003e Includes a CR2032 battery holder to ensure continuous timekeeping during power outages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eComprehensive Timekeeping:\u003c\/b\u003e Tracks seconds, minutes, hours, day of the week, date, month, and year. Automatically adjusts for months with fewer than 31 days and corrects for leap years until 2100.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFlexible Time Formats:\u003c\/b\u003e Supports both 24-hour and 12-hour (with AM\/PM indication) formats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDual Calendar Alarms:\u003c\/b\u003e Features two programmable calendar alarm clocks for precise event triggering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eProgrammable Square Wave Output:\u003c\/b\u003e Provides a configurable square wave signal for various applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrated Temperature Sensor:\u003c\/b\u003e Built-in \u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\" aria-hidden=\"true\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e±\u003c\/span\u003e\u003cspan class=\"mord\"\u003e3\u003cspan class=\"msupsub\"\u003e\u003cspan class=\"vlist-t\"\u003e\u003cspan class=\"vlist-r\"\u003e\u003cspan class=\"vlist\"\u003e\u003cspan class=\"\"\u003e\u003cspan class=\"pstrut\"\u003e\u003c\/span\u003e\u003cspan class=\"sizing reset-size6 size3 mtight\"\u003e\u003cspan class=\"mbin mtight\"\u003e∘\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eC\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e accuracy temperature sensor accessible via the I2C interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAT24C32 Memory Chip:\u003c\/b\u003e Onboard 32K I2C EEPROM for additional data storage (AT24C32).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eI2C Interface:\u003c\/b\u003e Simple two-wire I2C\/IIC bus interface for easy communication with microcontrollers. Supports up to 400kHz transmission speed at 5V operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCascadable:\u003c\/b\u003e The 24C32 address can be modified via shorting A0\/A1\/A2, allowing for cascading with other I2C devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePower Monitoring:\u003c\/b\u003e Precision voltage reference and comparator circuits monitor VCC status, detect power failure, provide a reset output, and manage automatic power switching.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eTechnical Specifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eWorking Voltage:\u003c\/b\u003e \u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\" aria-hidden=\"true\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e3.3\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eV\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003cspan class=\"mbin\"\u003e−\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e5.5\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eV\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDimensions:\u003c\/b\u003e \u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\" aria-hidden=\"true\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e38\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003emm\u003c\/span\u003e\u003cspan class=\"mopen\"\u003e(\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eL\u003c\/span\u003e\u003cspan class=\"mclose\"\u003e)\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003cspan class=\"mbin\"\u003e×\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e22\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003emm\u003c\/span\u003e\u003cspan class=\"mopen\"\u003e(\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eW\u003c\/span\u003e\u003cspan class=\"mclose\"\u003e)\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003cspan class=\"mbin\"\u003e×\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e14\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003emm\u003c\/span\u003e\u003cspan class=\"mopen\"\u003e(\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eH\u003c\/span\u003e\u003cspan class=\"mclose\"\u003e)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eClock Chip:\u003c\/b\u003e DS3231\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMemory Chip:\u003c\/b\u003e AT24C32 (32K capacity)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInterface:\u003c\/b\u003e I2C\/IIC\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBattery Type:\u003c\/b\u003e CR2032\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eTypical Applications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eData logging systems\u003c\/li\u003e\n\u003cli\u003eIoT devices\u003c\/li\u003e\n\u003cli\u003eAutomated watering systems\u003c\/li\u003e\n\u003cli\u003eTime-stamped projects\u003c\/li\u003e\n\u003cli\u003eBattery-powered applications\u003c\/li\u003e\n\u003cli\u003eAny project requiring highly accurate timekeeping\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eWiring Instructions (For Arduino Uno R3 Example):\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSCL\u003c\/b\u003e \u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\" aria-hidden=\"true\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mrel\"\u003e→\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e A5\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSDA\u003c\/b\u003e \u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\" aria-hidden=\"true\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mrel\"\u003e→\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e A4\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVCC\u003c\/b\u003e \u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\" aria-hidden=\"true\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mrel\"\u003e→\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e 5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGND\u003c\/b\u003e \u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\" aria-hidden=\"true\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mrel\"\u003e→\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e GND\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sun Cheong Computer Company Limited","offers":[{"title":"Default Title","offer_id":43008641106071,"sku":"21PS001343","price":119.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0440\/4022\/4919\/products\/ds3231-rtc-clock-module-back-view.jpg?v=1755615252","url":"https:\/\/scccltd.com\/en-tw\/products\/ds3231-rtc-real-time-clock-module-for-arduino","provider":"Sun Cheong Computer Company Limited","version":"1.0","type":"link"}