{"id":5411,"date":"2026-06-09T11:31:46","date_gmt":"2026-06-09T11:31:46","guid":{"rendered":"https:\/\/materialparts.com\/pcal6524heaz\/"},"modified":"2026-06-09T11:31:46","modified_gmt":"2026-06-09T11:31:46","slug":"pcal6524heaz","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/pcal6524heaz\/","title":{"rendered":"PCAL6524HEAZ"},"content":{"rendered":"

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

PCAL6524HEAZ from NXP is a 24-bit I2C GPIO expander with programmable pull-up\/pull-down, interrupt, latch. HVQFN-28.<\/p>\n

\u5de5\u4f5c\u539f\u7406<\/h2>\n

Advanced I2C GPIO expander with 24 quasi-bidirectional I\/O pins. Programmable pull-up\/pull-down resistors. Input latch for stable reads. Interrupt output on input change. Software reset. 400kHz I2C. 1.65-5.5V I\/O with level translation.<\/p>\n

Pin Description<\/h2>\n\n\n\n\n\n
\u522b\u9488\u7ec4<\/th>\n\u529f\u80fd<\/th>\n\u8ba1\u6570<\/th>\n<\/tr>\n
P0-P2<\/td>\nGPIO ports<\/td>\n24<\/td>\n<\/tr>\n
I2C<\/td>\nSDA\/SCL<\/td>\n2<\/td>\n<\/tr>\n
INT<\/td>\n\u4e2d\u65ad<\/td>\n1<\/td>\n<\/tr>\n<\/table>\n

\u5e94\u7528<\/h2>\n
    \n
  • GPIO expansion<\/li>\n
  • LED control<\/li>\n
  • Keyboard scanning<\/li>\n
  • Industrial I\/O<\/li>\n<\/ul>\n

    Alternative Models<\/h2>\n\n\n\n
    Mfr<\/th>\nPart<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n
    \u6069\u667a\u6d66<\/td>\nPCAL6416AHEAZ<\/td>\n16-bit version<\/td>\n<\/tr>\n<\/table>","protected":false},"excerpt":{"rendered":"

    Product Overview PCAL6524HEAZ from NXP is a 24-bit I2C GPIO expander with programmable pull-up\/pull-down, interrupt, latch. HVQFN-28. Working Principle Advanced I2C GPIO expander with 24 quasi-bidirectional I\/O pins. Programmable pull-up\/pull-down resistors. Input latch for stable reads. Interrupt output on input change. Software reset. 400kHz I2C. 1.65-5.5V I\/O with level translation. Pin Description Pin Group Function […]<\/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":[13,20],"tags":[],"chip_brand":[168],"class_list":["post-5411","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-nxp"],"acf":{"brief_explanation":"24-bit I2C I\/O expander, HVQFN-28","date_code":"","package_case":"HVQFN-28 (4.5x4.5mm)","in_stock":5681,"datasheet":"https:\/\/www.nxp.com\/docs\/en\/data-sheet\/PCAL6524.pdf","price":"$1.65 @ 1ku","product_introduction":"PCAL6524HEAZ from NXP is a 24-bit I2C GPIO expander with programmable pull-up\/pull-down, interrupt, latch. HVQFN-28.","working_principle":"Advanced I2C GPIO expander with 24 quasi-bidirectional I\/O pins. Programmable pull-up\/pull-down resistors. Input latch for stable reads. Interrupt output on input change. Software reset. 400kHz I2C. 1.65-5.5V I\/O with level translation.","pin_description":"
    Pin Group<\/th>Function<\/th>Count<\/th><\/tr>
    P0-P2<\/td>GPIO ports<\/td>24<\/td><\/tr>
    I2C<\/td>SDA\/SCL<\/td>2<\/td><\/tr>
    INT<\/td>Interrupt<\/td>1<\/td><\/tr><\/table>","application_scenarios":"
    • GPIO expansion<\/li>
    • LED control<\/li>
    • Keyboard scanning<\/li>
    • Industrial I\/O<\/li><\/ul>","alternative_models":"
      Mfr<\/th>Part<\/th>Notes<\/th><\/tr>
      NXP<\/td>PCAL6416AHEAZ<\/td>16-bit version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5411","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=5411"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5411\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5411"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}