{"id":11689,"date":"2026-07-26T14:04:01","date_gmt":"2026-07-26T14:04:01","guid":{"rendered":"https:\/\/ic-vendor.com\/pcf8563t-5518\/"},"modified":"2026-07-26T14:04:01","modified_gmt":"2026-07-26T14:04:01","slug":"pcf8563t-5518","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/pcf8563t-5518\/","title":{"rendered":"PCF8563T\/5,518"},"content":{"rendered":"

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

The PCF8563T\/5,518 from NXP is a low-power CMOS real-time clock\/calendar with I2C interface and only 0.25 \u00b5A backup current. It provides century, year, month, day, weekday, hour, minute, second counting with alarm and timer functions.<\/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
\u0627\u0644\u0648\u0638\u064a\u0641\u0629<\/td>\nCMOS real-time clock \/ calendar<\/td>\n<\/tr>\n
\u0627\u0644\u0648\u0627\u062c\u0647\u0629<\/td>\nI2C (up to 400 kHz)<\/td>\n<\/tr>\n
Clock Output<\/td>\nProgrammable 32.768 kHz to 1 Hz<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n1.0V to 5.5V<\/td>\n<\/tr>\n
Backup Current<\/td>\n0.25 \u00b5A at 3.0V<\/td>\n<\/tr>\n
Alarm<\/td>\nMinute\/hour\/day\/weekday alarm<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-8 (3.9×4.9mm)<\/td>\n<\/tr>\n<\/table>\n

\u0645\u0628\u062f\u0623 \u0627\u0644\u0639\u0645\u0644<\/h2>\n

A 32.768 kHz crystal drives the timebase. Divider chain counts seconds through centuries. I2C interface reads\/writes all time registers. A dedicated VDD backup pin allows a coin cell to maintain timekeeping when main power is removed, consuming only 0.25 \u00b5A. Programmable CLKOUT provides system clock or low-frequency tick.<\/p>\n

\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
    \n
  • Embedded system RTC<\/li>\n
  • Power management timer<\/li>\n
  • Event timestamping<\/li>\n
  • Alarm\/wake-up scheduling<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

    Product Overview The PCF8563T\/5,518 from NXP is a low-power CMOS real-time clock\/calendar with I2C interface and only 0.25 \u00b5A backup current. It provides century, year, month, day, weekday, hour, minute, second counting with alarm and timer functions. Key Specifications Function CMOS real-time clock \/ calendar Interface I2C (up to 400 kHz) Clock Output Programmable 32.768 […]<\/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":[13],"tags":[2969],"chip_brand":[168],"class_list":["post-11689","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-pcf8563t-5518","chip_brand-nxp"],"acf":{"brief_explanation":"I2C RTC, 0.25\u00b5A backup, SOIC-8","date_code":"","package_case":"SOIC-8","in_stock":11693,"datasheet":"https:\/\/www.nxp.com\/products\/analog\/clocks-and-timing\/real-time-clocks\/PCF8563","price":"","product_introduction":"The PCF8563T\/5,518 from NXP is a low-power CMOS real-time clock\/calendar with I2C interface and only 0.25 \u00b5A backup current. It provides century, year, month, day, weekday, hour, minute, second counting with alarm and timer functions.","working_principle":"A 32.768 kHz crystal drives the timebase. Divider chain counts seconds through centuries. I2C interface reads\/writes all time registers. A dedicated VDD backup pin allows a coin cell to maintain timekeeping when main power is removed, consuming only 0.25 \u00b5A. Programmable CLKOUT provides system clock or low-frequency tick.","pin_description":"
    Pin<\/th>Name<\/th>Description<\/th><\/tr>
    1<\/td>OSCI<\/td>Crystal input<\/td><\/tr>
    2<\/td>OSCO<\/td>Crystal output<\/td><\/tr>
    3<\/td>INT<\/td>Interrupt output<\/td><\/tr>
    4<\/td>VSS<\/td>Ground<\/td><\/tr>
    5<\/td>SDA<\/td>I2C data<\/td><\/tr>
    6<\/td>SCL<\/td>I2C clock<\/td><\/tr>
    7<\/td>CLKOUT<\/td>Clock output<\/td><\/tr>
    8<\/td>VDD<\/td>Supply<\/td><\/tr><\/table>","application_scenarios":"
    • Embedded system RTC<\/li>
    • Power management timer<\/li>
    • Event timestamping<\/li>
    • Alarm\/wake-up scheduling<\/li><\/ul>","alternative_models":"
      Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
      DS3231<\/td>Maxim<\/td>TCXO, higher accuracy<\/td><\/tr>
      RV-8803-C3<\/td>Micro Crystal<\/td>Ultra-low Iq<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/11689","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=11689"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/11689\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=11689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=11689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=11689"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=11689"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}