{"id":8368,"date":"2026-06-28T12:43:09","date_gmt":"2026-06-28T12:43:09","guid":{"rendered":"https:\/\/ic-vendor.com\/pcf85063at-aaz\/"},"modified":"2026-06-28T12:43:09","modified_gmt":"2026-06-28T12:43:09","slug":"pcf85063at-aaz","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/pcf85063at-aaz\/","title":{"rendered":"PCF85063AT\/AAZ"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The PCF85063AT\/AAZ from NXP Semiconductors is an ultra-low-power CMOS real-time clock (RTC) and calendar with I2C interface in an 8-pin TSSOP package. Consuming only 0.35 \u00b5A typical backup current, it provides seconds through year counting, alarm functions, and programmable offset for crystal frequency compensation.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nI2C (400 kHz)<\/td>\n<\/tr>\n
Backup Current<\/td>\n0.35 \u00b5A (typ @ 3.0 V)<\/td>\n<\/tr>\n
Clock Frequency<\/td>\n32.768 kHz<\/td>\n<\/tr>\n
Time Accuracy<\/td>\n\u00b11 ppm (with offset compensation)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n1.2 V to 4.2 V<\/td>\n<\/tr>\n
Alarm<\/td>\nMinute, hour, day, and weekday alarm<\/td>\n<\/tr>\n
Offset Register<\/td>\nProgrammable for crystal frequency correction<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +85 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nTSSOP-8<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Ultra-low 0.35 \u00b5A backup current extends battery life<\/li>\n
  • Wide 1.2 V to 4.2 V operating range for direct battery connection<\/li>\n
  • Programmable offset register for crystal frequency compensation<\/li>\n
  • Alarm function with interrupt output for system wake-up<\/li>\n
  • Century flag and watchdog timer functions<\/li>\n
  • Automatic weekday and leap year compensation<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Smart meters and utility monitoring<\/li>\n
    • Portable medical devices<\/li>\n
    • IoT sensor nodes and edge devices<\/li>\n
    • Industrial data loggers<\/li>\n
    • Automotive infotainment and navigation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The PCF85063AT\/AAZ from NXP Semiconductors is an ultra-low-power CMOS real-time clock (RTC) and calendar with I2C interface in an 8-pin TSSOP package. Consuming only 0.35 \u00b5A typical backup current, it provides seconds through year counting, alarm functions, and programmable offset for crystal frequency compensation. Key Specifications Interface I2C (400 kHz) Backup Current 0.35 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[168],"class_list":["post-8368","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-nxp"],"acf":{"brief_explanation":"Ultra-low-power RTC, 0.35uA, I2C, alarm, offset comp, TSSOP-8","date_code":"","package_case":"TSSOP-8 (3.00 x 4.40 x 1.00 mm)","in_stock":14378,"datasheet":"https:\/\/www.nxp.com\/docs\/en\/data-sheet\/PCF85063A.pdf","price":"$0.65 @ 1ku","product_introduction":"The PCF85063AT\/AAZ from NXP Semiconductors is an ultra-low-power CMOS real-time clock (RTC) and calendar IC with an I2C serial interface in an 8-pin TSSOP package. Designed for battery-backed timekeeping applications, it consumes only 0.35 \u00b5A typical supply current from a 3.0 V backup battery, enabling multi-year operation from a single coin cell. The device provides full clock and calendar functions counting seconds, minutes, hours, days, weekdays, months, and years with automatic leap year compensation up to 2099. A programmable offset register allows software correction of crystal frequency tolerance, achieving \u00b11 ppm accuracy. The alarm function supports minute, hour, day, and weekday matching with a dedicated interrupt output that can wake a host microcontroller from sleep mode. The wide 1.2 V to 4.2 V supply range allows direct connection to single-cell Li-ion or coin-cell batteries without voltage regulation.","working_principle":"The PCF85063AT\/AAZ uses a 32.768 kHz quartz crystal as the timebase connected to the OSCI and OSCO pins. An internal oscillator circuit drives the crystal at its series resonance frequency, and the resulting clock is divided down by a 15-stage binary counter to produce a 1 Hz tick. The 1 Hz signal increments the seconds counter, which cascades through the minutes, hours, days, weekdays, months, and years counters with automatic carry logic. Leap year correction adds February 29th in years divisible by 4 (except century years not divisible by 400). The programmable offset register adds or subtracts pulses from the divider chain at regular intervals to compensate for crystal frequency offset, achieving \u00b11 ppm timekeeping accuracy. The I2C interface provides read and write access to all time and configuration registers. In backup mode (VDD removed, VBAT present), only the oscillator and counter chain remain active to minimize current draw.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>OSCI<\/td>Input<\/td>Crystal oscillator input (32.768 kHz)<\/td><\/tr>
      2<\/td>OSCO<\/td>Output<\/td>Crystal oscillator output<\/td><\/tr>
      3<\/td>VSS<\/td>Ground<\/td>Ground connection<\/td><\/tr>
      4<\/td>VDD<\/td>Power<\/td>Main supply voltage (1.2 V to 4.2 V)<\/td><\/tr>
      5<\/td>SDA<\/td>I\/O<\/td>I2C serial data input\/output<\/td><\/tr>
      6<\/td>SCL<\/td>Input<\/td>I2C serial clock input<\/td><\/tr>
      7<\/td>INT<\/td>Output<\/td>Alarm interrupt output (active low, open-drain)<\/td><\/tr>
      8<\/td>VBAT<\/td>Power<\/td>Backup battery supply (1.2 V to 4.2 V)<\/td><\/tr><\/table>","application_scenarios":"
      • Smart Utility Meters<\/strong>: Time-stamping consumption data in electricity, gas, and water meters with 10+ year coin-cell backup<\/li>
      • IoT Sensor Nodes<\/strong>: Scheduled wake-up using alarm interrupt to minimize power consumption in wireless sensor networks<\/li>
      • Portable Medical Devices<\/strong>: Dosing schedule timing and event logging in insulin pumps and medication dispensers<\/li>
      • Industrial Data Loggers<\/strong>: Timestamping measurement events in environmental and process monitoring systems<\/li>
      • Automotive Infotainment<\/strong>: Maintaining clock and calendar during vehicle battery disconnect events<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Iq<\/th>Interface<\/th>Alarm<\/th>Package<\/th>Notes<\/th><\/tr>
        PCF85063TP1AZ<\/td>NXP<\/td>0.35 \u00b5A<\/td>I2C<\/td>Yes<\/td>SO-8<\/td>Wider package variant<\/td><\/tr>
        DS1337Z+<\/td>Maxim (ADI)<\/td>1.5 \u00b5A<\/td>I2C<\/td>2<\/td>SOIC-8<\/td>Two alarms, higher Iq<\/td><\/tr>
        MCP7940N-I\/SN<\/td>Microchip<\/td>1.2 \u00b5A<\/td>I2C<\/td>2<\/td>SOIC-8<\/td>SRAM, 2 alarms<\/td><\/tr>
        RV-8523-C3<\/td>Micro Crystal<\/td>0.24 \u00b5A<\/td>I2C<\/td>1<\/td>MSOP-8<\/td>Even lower Iq, integrated crystal<\/td><\/tr>
        AB-RTCMC-32.768kHz-EOZ9-SW<\/td>Abracon<\/td>0.45 \u00b5A<\/td>I2C<\/td>Yes<\/td>QFN<\/td>Module with integrated crystal<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/8368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=8368"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/8368\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=8368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=8368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=8368"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=8368"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}