{"product_id":"dfrobot-ds3231-real-time-clock-rtc-clock-timing-fermion-platform-evaluation-expansion-board","title":"DFRobot Fermion: DS3231 Precise RTC (Breakout) | DFR0819","description":"\u003ch2\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003ereal-time clock module (RTC)\u003c\/strong\u003e uses the \u003cstrong\u003eDS3231\u003c\/strong\u003e chip that integrates a crystal resonator and a temperature compensator, which improves the long-term accuracy of the module. In the range of -40°C to 85°C, the accuracy of DS3231 remains at ±3.5ppm (±0.03024 seconds\/day). \u003cbr\u003e\u003cbr\u003eThe device incorporates a battery input, and maintains high precision timing when main power to the device is interrupted. The RTC provides information of seconds, minutes, hours, week, day, month and year, and it can automatically adjust the date at the end of the month, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM\/PM indicator. Two programmable time-of-day alarms and a programmable square-wave output are provided. In addition, the RST pin can be used as a push-button input for microprocessor reset.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e Due to the latest air cargo regulations, the transport audit of special items such as batteries, magnets and liquids will become very strict, so this RTC module does not come with batteries anymore, please buy them locally. The button cell battery model that goes with the module is CR1220.\u003cbr\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0531\/3419\/6927\/files\/Connection-Diagram.png?v=1749175091\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cem\u003eConnection-Diagram\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv id=\"Features\" class=\"content Features\"\u003e\n\u003ch2\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eInternal integrated crystal resonator, small deviation\u003c\/li\u003e\n\u003cli\u003eInternal integrated temperature compensator, small temperature drift\u003c\/li\u003e\n\u003cli\u003eComplete clock calendar function\u003c\/li\u003e\n\u003cli\u003eTwo programmable Time-of-Day alarms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"Applications\" class=\"content Applications\"\u003e\n\u003ch2\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eEvent reminder\u003c\/li\u003e\n\u003cli\u003eMCU external wakeup source\u003c\/li\u003e\n\u003cli\u003eClock and alarm output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"Specification\" class=\"content Specification\"\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply Voltage: 3.3V-5.5V\u003c\/li\u003e\n\u003cli\u003eI2C Address: 0x68\u003c\/li\u003e\n\u003cli\u003eTiming Range: 1970 ~ 2100\u003c\/li\u003e\n\u003cli\u003eWorking Temperature: -40℃ ~ +85℃\u003c\/li\u003e\n\u003cli\u003eTiming Accuracy: ±3.5ppm (±0.3024 seconds\/day)\u003c\/li\u003e\n\u003cli\u003eProduct Size: 22.5*21mm \/ 0.89*0.83 inch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"Documents\" class=\"content Documents\"\u003e\n\u003ch2\u003e\u003cstrong\u003eDocuments:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/wiki.dfrobot.com\/Fermion_DS3231_Precise_RTC_Breakout_SKU_DFR0819\" target=\"_blank\"\u003eProduct wiki\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"Shipping-List\" class=\"content ShippingList\"\u003e\n\u003ch2\u003e\u003cstrong\u003ePart List:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eFermion: DS3231 Precise RTC (Breakout) x1\u003c\/li\u003e\n\u003cli\u003e2.54-7P Black Single Row Connector x1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":43696844406975,"sku":"MLE03884","price":749.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0531\/3419\/6927\/files\/MLE03884.jpg?v=1749175270","url":"https:\/\/makerlab.ph\/products\/dfrobot-ds3231-real-time-clock-rtc-clock-timing-fermion-platform-evaluation-expansion-board","provider":"Makerlab PH","version":"1.0","type":"link"}