{"product_id":"ds1307-rtc-module-replace-ds1302-ds3231-with-cr2032-battery-holder-lego-brick-shell-arduino-esp32-raspberry-pi-microbit-clock","title":"DS1307 RTC Module Replace DS1302 DS3231 with CR2032 Battery Holder LEGO Brick Shell Arduino ESP32 Raspberry Pi Microbit Clock","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNullLab\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSMD\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e6-16V\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eLogic ICs\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003esemi_Choice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9230e710670940cd93ff112bfdc779bes.png\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style='background-color:rgb(252, 220, 0);font-size:22px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eDS1307 is a low-power real-time clock (RTC) module that communicates with a microcontroller through an I2C interface, with simple wiring and easy integration. This module can provide information such as seconds, minutes, hours, weeks, months, years, etc. The number of days in each month can be automatically adjusted, and it also has a leap year compensation function. You can choose between a 12 hour or 24-hour clock through the AM\/PM logo. The module integrates 56 bytes of non-volatile RAM internally, which can be used to store critical data. In addition, DS1307 also has a power sensing circuit that automatically switches to the backup power supply when the main power supply fails, to maintain time, date information, and timing. With its low power consumption, high precision, and ease of integration, DS1307 is widely used in embedded systems, data loggers, smart meters, and other electronic devices that require reliable time management.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style='background-color:rgb(252, 220, 0);font-size:22px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eModule characteristics\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eReal time clock can count seconds, minutes, hours, dates, months, weeks, and years, with leap year compensation function, valid until 2100\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eSupports 24-hour or 12 hour time display\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eAdopting I2C serial interface\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eBuilt in 56 byte non-volatile RAM\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eCompatible with TTL with VCC=5V\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eOptional 8-pin DIP and SOIC packages\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eOptional industrial temperature range: -40 ℃ to+85 ℃\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eDual power supply tubes are used for main and backup power supply\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eIn battery backup mode, power consumption is less than 500nA\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style='background-color:rgb(252, 220, 0);font-size:22px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eschematic diagram\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/emakefun.github.io\/emakefun-docsify\/zh-cn\/ph2.0_sensors\/smart_module\/ds1307\/picture\/schematic_diagram.png\" slate-data-type=\"image\"\u003e\u003cspan style='background-color:rgb(252, 220, 0);font-size:22px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eModule parameters\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eWorking voltage: 5V\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eInterface: I2C interface and PH2.0 spacing interface\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eConnection method: PH2.0 4PIN anti reverse DuPont wire\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eCommunication method: I2C communication, address 0x68\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eSize: 38.4 * 22.4mm, compatible with LEGO bricks and M4 screw fixing holes\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ctable style='border-collapse:collapse;font-family:\"Source Sans Pro\", \"Helvetica Neue\", Arial, sans-serif;font-size:15px;text-align:start;color:rgb(52, 73, 94);background-color:rgb(255, 255, 255);width:930px' align=\"start\"\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"text-align:center;border:1px solid rgb(221, 221, 221);padding:6px 13px\" align=\"center\"\u003e\u003cp\u003ePin name\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;border:1px solid rgb(221, 221, 221);padding:6px 13px\" align=\"center\"\u003e\u003cp\u003edescription\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid rgb(221, 221, 221);padding:6px 13px\"\u003e\u003cp\u003eG\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid rgb(221, 221, 221);padding:6px 13px\"\u003e\u003cp\u003eGND ground wire\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:rgb(248, 248, 248)\"\u003e\n\u003ctd style=\"border:1px solid rgb(221, 221, 221);padding:6px 13px\"\u003e\u003cp\u003eV\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid rgb(221, 221, 221);padding:6px 13px\"\u003e\u003cp\u003e5V power supply pin\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid rgb(221, 221, 221);padding:6px 13px\"\u003e\u003cp\u003e\u003cspan style='background-color:rgb(255, 255, 255);color:rgb(52, 73, 94);font-size:15px;font-family:\"Source Sans Pro\", \"Helvetica Neue\", Arial, sans-serif'\u003eSDA\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid rgb(221, 221, 221);padding:6px 13px\"\u003e\u003cp\u003eI2C data pin\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:rgb(248, 248, 248)\"\u003e\n\u003ctd 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