{"product_id":"adafruit-rv-8803-high-accuracy-real-time-clock-breakout-board-ada6538","title":"Adafruit RV-8803 High Accuracy Real Time Clock Breakout Board","description":"\u003cstyle type=\"text\/css\"\u003e.product-info-tutorial{margin-bottom:20px;}.product-tutorial-img-container{width:20%;}.product-tutorial-img-container img{margin:0;}\u003c\/style\u003e\u003c?xml version=\"1.0\" standalone=\"yes\"?\u003e\n\n\u003csection id=\"description\" class=\"prod-accordion-content prod-accordion-content-description mobile-text-wrapper\" aria-labelledby=\"tab-description-heading\"\u003e\n\t\t\t\u003cdiv class=\"tab-heading-row\"\u003e\n\t\t\t\t\u003ch2 id=\"tab-description-heading\"\u003e\n\t\t\t\t\t\t\t\t\t\t\tDescription\t\t\t\t\t\t\t\t\t\u003c\/h2\u003e\n\t\t\t\u003c\/div\u003e\n\t\t\t\u003cdiv id=\"tab-description-content\" class=\"panel-collapse collapse in\"\u003e\n\t\t\t\t\u003cp\u003eFor excellent accuracy time-keeping - when your everyday RTC (Real Time Clock) won't do - the \u003cstrong\u003eAdafruit RV-8803 Precision Real Time Clock Breakout Board\u003c\/strong\u003e is a tick-tock above the rest with excellent ±1.5 ppm (at 0~50°C) accuracy. Thanks to the built-in crystal with temperature compensation management, classic RTC drift is minimized so you don't have to do any time correction with WiFi or GPS to keep current. Compare it to the popular \u003ca href=\"https:\/\/www.adafruit.com\/search?q=ds3231\"\u003eDS3231\u003c\/a\u003e, with ±2 ppm (0~40°C), you get even tighter spec'd performance, at a better price!\u003c\/p\u003e\n\u003cp\u003eThis is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for data-logging, clock-building, time stamping, timers, and alarms, etc. Equipped with \u003cstrong\u003eRV-8803\u003c\/strong\u003e RTC - it can run from 3.3V \u003cem\u003eor\u003c\/em\u003e 5V power \u0026amp; logic - and keep excellent time with under 50 seconds of drift over a whole year.\u003c\/p\u003e\n\u003cp\u003eThere's also some nifty extras like square-wave out, timer alarm, event timestamping (you can use the built in button to activate an event, or use the breakout pads)\u003c\/p\u003e\n\u003cp\u003eWorks great with an \u003ca href=\"https:\/\/github.com\/adafruit\/?q=rv8803\u0026amp;type=all\u0026amp;language=\u0026amp;sort=\"\u003eArduino using our RTC library\u003c\/a\u003e, with \u003ca href=\"https:\/\/github.com\/adafruit\/?q=rv8803\u0026amp;type=all\u0026amp;language=\u0026amp;sort=\"\u003eCircuitPython\u003c\/a\u003e, or with a Raspberry Pi (or similar single board linux computer) thanks to built-in kernel support.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote: This product does not come with a CR1220 coin cell battery. \u003ca href=\"https:\/\/www.adafruit.com\/product\/380\"\u003eWe recommend you purchase a coin cell battery to use with this product.\u003c\/a\u003e \u003c\/strong\u003eThe battery is required in order to keep time when power is lost, and will last at least 5 years before needing to be changed.\u003c\/p\u003e\n\u003cp\u003eWe've taken the RTC and put it onto a breakout PCB along with support circuitry to let you use it with 3.3V (Feather\/Raspberry Pi) or 5V (Arduino\/ Metro328) logic levels. Additionally, since it speaks I2C you can easily connect it up with two wires (plus power and ground!).  We've even included \u003ca href=\"https:\/\/www.sparkfun.com\/qwiic\"\u003eSparkFun qwiic\u003c\/a\u003e compatible\u003cstrong\u003e \u003ca target=\"_blank\" rel=\"noopener\" href=\"https:\/\/learn.adafruit.com\/introducing-adafruit-stemma-qt\"\u003eSTEMMA QT\u003c\/a\u003e\u003c\/strong\u003e connectors for the I2C bus so \u003cstrong\u003eyou don't even need to solder!\u003c\/strong\u003e \u003ca href=\"https:\/\/www.adafruit.com\/?q=stemma+qt+cable\u0026amp;sort=BestMatch\"\u003e\u003cstrong\u003eQT Cable is not included\u003c\/strong\u003e, but we have a variety in the shop\u003c\/a\u003e. Just wire up to your favorite micro and you can use our CircuitPython\/Python or \u003ca href=\"https:\/\/github.com\/adafruit\/RTClib\"\u003eArduino drivers\u003c\/a\u003e to easily interface with the RV-8803.\u003c\/p\u003e\n\u003cp\u003eComes as a fully assembled and tested breakout plus a small piece of header. You can solder header in to plug it into a breadboard, or solder wires directly.\u003c\/p\u003e\t\t\t\u003c\/div\u003e\n\t\t\u003c\/section\u003e\u003cbr\u003e\u003cbr\u003e\u003csection id=\"technical-details\" class=\"prod-accordion-content prod-accordion-content-technical-details mobile-text-wrapper\" aria-labelledby=\"tab-technical-details-heading\"\u003e\n\t\t\t\u003cdiv class=\"tab-heading-row\"\u003e\n\t\t\t\t\u003ch2 id=\"tab-technical-details-heading\"\u003e\n\t\t\t\t\t\t\t\t\t\t\tTechnical Details\t\t\t\t\t\t\t\t\t\u003c\/h2\u003e\n\t\t\t\u003c\/div\u003e\n\t\t\t\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e\n\t\t\t\t\u003cdiv class=\"row\"\u003e\r\n    \u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\n\u003cheader\u003e\u003cp\u003e\u003cstrong\u003eRV-8803 Specifications:\u003c\/strong\u003e\u003c\/p\u003e\u003c\/header\u003e\u003cul\u003e\n\u003cli\u003eFactory calibrated temperature compensation\u003c\/li\u003e\n\u003cli\u003eVery high Time Accuracy (best in class).\u003cul\u003e\n\u003cli\u003e±1.5 ppm 0 to +50°C\u003c\/li\u003e\n\u003cli\u003e±3.0 ppm -40 to +85°C\u003c\/li\u003e\n\u003cli\u003e±7.0 ppm +85 to +105°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow power consumption: 240 nA @ 3 V. (best in class)\u003c\/li\u003e\n\u003cli\u003eWide operating voltage range: 1.5 V to 5.5 V.\u003c\/li\u003e\n\u003cli\u003eAging compensation with OFFSET value\u003c\/li\u003e\n\u003cli\u003eCounters for hundredths of seconds, seconds, minutes, hours, date, month, year and weekday\u003c\/li\u003e\n\u003cli\u003eI²C-bus interface (up to 400 kHz)\u003c\/li\u003e\n\u003cli\u003ePeriodic Countdown Timer Interrupt function\u003c\/li\u003e\n\u003cli\u003ePeriodic Time Update Interrupt function (seconds, minutes)\u003c\/li\u003e\n\u003cli\u003eAlarm Interrupts for weekday or date, hour and minute settings\u003c\/li\u003e\n\u003cli\u003eExternal Event Input with Interrupt and Time Stamp function\u003c\/li\u003e\n\u003cli\u003eProgrammable Clock Output for peripheral devices (32.768 kHz, 1024 Hz, 1 Hz) with enable\/disable function (CLKOE)\u003c\/li\u003e\n\u003cli\u003eOperating temperature range: -40 to +105°C\u003c\/li\u003e\n\u003cli\u003eUltra small and compact C7 package size,\u003c\/li\u003e\n\u003cli\u003eRegister compatible with Epson RX-8803SA\/LC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProduct Dimensions: 25.4mm x 17.7mm x 7.9mm \/ 1.0\" x 0.7\" x 0.3\" \u003c\/p\u003e\n\u003cp\u003eProduct Weight: 2.2g \/ 0.1oz \u003c\/p\u003e\n\u003c\/div\u003e\r\n  \u003c\/div\u003e\t\u003cul id=\"product-files\"\u003e\n\t\t\t\t\t\u003cli\u003e\n\u003ca href=\"https:\/\/cdn-shop.adafruit.com\/product-files\/6538\/P6538+RV-8803-C7.pdf\"\u003eDatasheet\u003c\/a\u003e\n\t\t\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003cimg src=\"\/\/www.adafruit.com\/includes\/templates\/shop2019\/images\/RoHS2_2011_65_EU.svg\" alt=\"RoHS 2 2011 65 EU Compliant\" width=\"145\" height=\"80\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003cimg src=\"\/\/www.adafruit.com\/includes\/templates\/shop2019\/images\/RoHS2_2015_863_EU.svg\" alt=\"RoHS 2 2015 863 EU Compliant\" width=\"145\" height=\"80\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\t\t\t\u003c\/div\u003e\n\t\t\u003c\/section\u003e\u003cbr\u003e\u003cbr\u003e\u003csection id=\"learn\" class=\"prod-accordion-content prod-accordion-content-learn mobile-text-wrapper\" aria-labelledby=\"tab-learn-heading\"\u003e\n\t\t\t\u003cdiv class=\"tab-heading-row\"\u003e\n\t\t\t\t\u003ch2 id=\"tab-learn-heading\"\u003e\n\t\t\t\t\t\t\t\t\t\t\tLearn\t\t\t\t\t\t\t\t\t\u003c\/h2\u003e\n\t\t\t\u003c\/div\u003e\n\t\t\t\u003cdiv id=\"tab-learn-content\" class=\"panel-collapse collapse in\"\u003e\n\t\t\t\t\u003cdiv class=\"learn-guides-list\"\u003e\n        \u003cdiv class=\"product-learn-guide learn-guide-primary\"\u003e\n        \u003cdiv\u003e\n            \u003ca class=\"product-learn-guide-img-container\" href=\"https:\/\/learn.adafruit.com\/adafruit-rv-8803-high-accuracy-real-time-clock\"\u003e\n                                                        \u003cimg src=\"\/\/cdn-learn.adafruit.com\/guides\/images\/000\/004\/643\/medium640\/6538-00.jpg\" alt=\"Adafruit RV-8803 real-time clock breakout with coin-cell holder, pushbutton, and labeled VIN, GND, SCL, SDA, CLOE, INT, EVI, and SQW pins.\" class=\"img-responsive\"\u003e\n                            \u003c\/a\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"product-learn-guide-text\"\u003e\n            \u003cdiv class=\"product-learn-guide-title\"\u003e\n                \u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-rv-8803-high-accuracy-real-time-clock\"\u003e\n                Primary Guide:                 Adafruit RV-8803 High Accuracy Real Time Clock                \u003c\/a\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"product-learn-guide-tagline\"\u003e\n                Excellent time keeping within ±1.5 ppm over STEMMA QT            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n        \u003ca class=\"all-guides-link\" href=\"https:\/\/learn.adafruit.com\/products\/6538\/guides\"\u003e\u003cdiv\u003eSee All Guides \u003ci class=\"fa fa-external-link\"\u003e\u003c\/i\u003e\n\u003c\/div\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\t\t\t\u003c\/div\u003e\n\t\t\u003c\/section\u003e\n","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":42885003083858,"sku":"ADA6538","price":26.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/0383\/files\/6538-00.jpg?v=1794219307","url":"https:\/\/www.pakronics.co.nz\/products\/adafruit-rv-8803-high-accuracy-real-time-clock-breakout-board-ada6538","provider":"Pakronics®","version":"1.0","type":"link"}