{"id":5159,"date":"2026-06-09T09:04:42","date_gmt":"2026-06-09T09:04:42","guid":{"rendered":"https:\/\/materialparts.com\/ds1337str\/"},"modified":"2026-06-09T09:04:42","modified_gmt":"2026-06-09T09:04:42","slug":"ds1337str","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ds1337str\/","title":{"rendered":"DS1337S+T&R"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The DS1337S+T&R from Analog Devices\/Maxim Integrated is a low-cost I2C real-time clock with two time-of-day alarms and trickle-charge capability in an 8-pin SOIC package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u5236\u9020\u5546<\/td>\nAnalog Devices (Maxim)<\/td>\n<\/tr>\n
Interface<\/td>\nI2C (400kHz)<\/td>\n<\/tr>\n
Time Functions<\/td>\nSeconds through Century<\/td>\n<\/tr>\n
Alarms<\/td>\n2 (time-of-day)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n1.8V to 5.5V<\/td>\n<\/tr>\n
\u5907\u7528\u7535\u6c60<\/td>\nYes (VBAT pin)<\/td>\n<\/tr>\n
Trickle Charger<\/td>\nOn-chip<\/td>\n<\/tr>\n
Crystal<\/td>\n32.768 kHz external<\/td>\n<\/tr>\n
OSC Current<\/td>\n500nA (battery mode)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOIC-8 (150mil)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • I2C interface (400kHz compatible)<\/li>\n
  • Two time-of-day alarms<\/li>\n
  • On-chip trickle charger<\/li>\n
  • Battery backup with automatic switch<\/li>\n
  • 1.8V to 5.5V operation<\/li>\n
  • 500nA battery backup current<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Embedded systems timekeeping<\/li>\n
    • Data logging timestamps<\/li>\n
    • Power management scheduling<\/li>\n
    • Medical devices<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The DS1337S+T&R from Analog Devices\/Maxim Integrated is a low-cost I2C real-time clock with two time-of-day alarms and trickle-charge capability in an 8-pin SOIC package. Key Specifications Manufacturer Analog Devices (Maxim) Interface I2C (400kHz) Time Functions Seconds through Century Alarms 2 (time-of-day) Supply Voltage 1.8V to 5.5V Battery Backup Yes (VBAT pin) Trickle Charger […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,55],"tags":[],"chip_brand":[165],"class_list":["post-5159","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-transistors","chip_brand-adi"],"acf":{"brief_explanation":"I2C RTC with 2 alarms, trickle charger, 1.8-5.5V, SOIC-8 T&R","date_code":"","package_case":"SOIC-8 (4.9 x 3.9 mm, 1.27mm pitch)","in_stock":8283,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/DS1337-DS1337C.pdf","price":"$1.80 @ 1ku","product_introduction":"The DS1337S+T&R from Analog Devices (Maxim) is a low-cost I2C real-time clock providing seconds through century calendar with two programmable time-of-day alarms. The on-chip trickle charger simplifies backup battery management, while the 500nA battery-backup current maximizes battery life. The T&R suffix indicates tape-and-reel packaging. Operates from 1.8V to 5.5V with automatic VCC\/VBAT power switching.","working_principle":"The DS1337 uses an external 32.768kHz crystal for timekeeping. An internal oscillator divides the crystal frequency to 1Hz for clock counting. The I2C interface provides read\/write access to time, alarm, and control registers. When VCC drops below VBAT, the power-switch circuit automatically connects VBAT to the oscillator and timekeeping logic, maintaining clock operation with minimal current draw.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>VCC<\/td>Primary supply (1.8-5.5V)<\/td><\/tr>
      2<\/td>X1<\/td>Crystal input<\/td><\/tr>
      3<\/td>X2<\/td>Crystal output<\/td><\/tr>
      4<\/td>GND<\/td>Ground<\/td><\/tr>
      5<\/td>SDA<\/td>I2C data<\/td><\/tr>
      6<\/td>SCL<\/td>I2C clock<\/td><\/tr>
      7<\/td>INTB\/SQW<\/td>Interrupt\/Square-wave output<\/td><\/tr>
      8<\/td>VBAT<\/td>Battery backup input<\/td><\/tr><\/table>","application_scenarios":"
      • Embedded system timekeeping<\/li>
      • Data logging timestamps<\/li>
      • Alarm-based wake-up scheduling<\/li>
      • Industrial controller real-time tracking<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Notes<\/th><\/tr>
        ADI<\/td>DS1337C<\/td>With crystal trimming<\/td><\/tr>
        Microchip<\/td>MCP7940N-I\/SN<\/td>Similar I2C RTC<\/td><\/tr>
        NXP<\/td>PCF8523T\/1<\/td>Alternative RTC<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5159","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=5159"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5159\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5159"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}