{"product_id":"ds1302-real-time-clock-module-for-arduino","title":"DS1302 Real-Time Clock Module for Arduino \u0026 Microcontrollers","description":"\u003cp\u003e\u003cb\u003eOverview:\u003c\/b\u003e The DS1302 Real-Time Clock (RTC) module is an essential component for projects requiring accurate timekeeping, even when the main power supply is off. Powered by a DALLAS trickle-charge clock chip, it features a real-time clock\/calendar and 31 bytes of static RAM. It communicates with microcontrollers via a simple 3-wire serial interface, making it perfect for Arduino and other DIY electronics projects.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Features:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePrecise Timekeeping:\u003c\/b\u003e Provides seconds, minutes, hours, day, week, month, and year information, automatically adjusting for days per month and leap years (up to 2100).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrated RAM:\u003c\/b\u003e Includes 31 bytes of 8-bit static RAM for temporary data storage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSimple 3-Wire Interface:\u003c\/b\u003e Easy communication with microcontrollers using RST (Reset), I\/O (Data Line), and SCLK (Serial Clock) pins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWide Operating Voltage:\u003c\/b\u003e Compatible with 2.0V to 5V systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUltra-Low Power Consumption:\u003c\/b\u003e Operates at less than 300nA at 2.0V, ensuring long data and clock retention with backup power (less than 1mW).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFlexible Data Transfer:\u003c\/b\u003e Supports single-byte and multi-byte (character group) transfers for clock or RAM data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDIP-8 Package:\u003c\/b\u003e Features an 8-pin plug-in large chip (DS1302) with an IC Block for easy replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRobust Design:\u003c\/b\u003e Includes a high-quality 32.768KHz imported crystal (Japan) and a reliable CR2032 backup battery.\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\u003ePCB Size:\u003c\/b\u003e 44mm x 23mm x 1.6mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMounting:\u003c\/b\u003e 4 positioning holes, diameter 3.1mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBackup Battery:\u003c\/b\u003e Authentic celestial sphere CR2032 (3V, 260mAh, non-rechargeable). Theoretical data retention: \u0026gt;10 years.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCrystal Oscillator:\u003c\/b\u003e 32.768KHz, 6pF matching capacitance, 2x6mm size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIC:\u003c\/b\u003e DS1302 (8-pin plug-in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOperating Voltage:\u003c\/b\u003e 3.3V \/ 5V compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOperating Temperature:\u003c\/b\u003e 0°C to 70°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eWiring Method (Example for Arduino\/Microcontroller):\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eVCC:\u003c\/b\u003e Connect to +5V \/ 3.3V\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGND:\u003c\/b\u003e Connect to GND\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCLK:\u003c\/b\u003e Connect to Digital Pin (e.g., P02)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDAT:\u003c\/b\u003e Connect to Digital Pin (e.g., P01)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRST:\u003c\/b\u003e Connect to Digital Pin (e.g., P00) \u003ci\u003e(Note: Pin definitions can be modified in your program.)\u003c\/i\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003ePackage Includes:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x DS1302 Real-Time Clock Module\u003c\/li\u003e\n\u003cli\u003e1 x CR2032 Battery\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sun Cheong Computer Company Limited","offers":[{"title":"Default Title","offer_id":43006857248919,"sku":"21PS001205","price":42.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0440\/4022\/4919\/products\/ds1302-clock-module-pins-overview.jpg?v=1755614315","url":"https:\/\/scccltd.com\/en-tw\/products\/ds1302-real-time-clock-module-for-arduino","provider":"Sun Cheong Computer Company Limited","version":"1.0","type":"link"}