{"id":11747,"date":"2026-07-27T02:25:41","date_gmt":"2026-07-27T02:25:41","guid":{"rendered":"https:\/\/ic-vendor.com\/at42qt2640-aur\/"},"modified":"2026-07-27T10:15:11","modified_gmt":"2026-07-27T10:15:11","slug":"at42qt2640-aur","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/es\/at42qt2640-aur\/","title":{"rendered":"AT42QT2640-AUR"},"content":{"rendered":"

Productos<\/h2>\n

AT42QT2640-AUR is a 24-key QTouch touch controller with I2C\/SPI interface, spread spectrum for EMI, QFN-28 package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n
Funci\u00f3n<\/td>\nQTouch touch controller<\/td>\n<\/tr>\n
Keys<\/td>\n24<\/td>\n<\/tr>\n
Interface<\/td>\nI2C \/ SPI<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n1.62V to 3.6V<\/td>\n<\/tr>\n
Sensing Method<\/td>\nProjected capacitive<\/td>\n<\/tr>\n
Paquete<\/td>\nQFN-28<\/td>\n<\/tr>\n
Caracter\u00edsticas<\/td>\nSpread spectrum, auto-calibration<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 24-key projected capacitive touch<\/li>\n
  • I2C and SPI interface support<\/li>\n
  • Spread spectrum for EMI reduction<\/li>\n
  • Auto-calibration and drift compensation<\/li>\n
  • Low power mode for battery applications<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n

    Refer to manufacturer datasheet for detailed application information and design guidelines.<\/p>","protected":false},"excerpt":{"rendered":"

    Product Overview AT42QT2640-AUR is a 24-key QTouch touch controller with I2C\/SPI interface, spread spectrum for EMI, QFN-28 package. Key Specifications Function QTouch touch controller Keys 24 Interface I2C \/ SPI Supply Voltage 1.62V to 3.6V Sensing Method Projected capacitive Package QFN-28 Features Spread spectrum, auto-calibration Features 24-key projected capacitive touch I2C and SPI interface support […]<\/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":[13,24],"tags":[3032],"chip_brand":[3013],"class_list":["post-11747","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-microcontrollers-processors","tag-at42qt2640-aur","chip_brand-microchip-technology"],"acf":{"brief_explanation":"Capacitive touch controller, 64 channels, QTouch ADC, UART\/SPI host","date_code":"","package_case":"See datasheet","in_stock":3037,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/Atmel-9583-AT42-QTouch-Peripheral-Datasheet.pdf","price":"$1.00 - $5.00","product_introduction":"AT42QT2640-AUR is a 24-key QTouch touch controller with I2C\/SPI interface, spread spectrum for EMI, QFN-28 package.","working_principle":"The AT42QT2640-AUR is a Microchip\/Atmel touch controller or microcontroller. For touch variants, capacitive sensing measures charge transfer between a sense electrode and a reference, detecting finger proximity as a capacitance increase. A sigma-delta CSD (Capacitive Sigma Delta) algorithm converts the capacitance change to a digital count. For MCU variants, an ARM or AVR core executes application firmware with integrated peripherals for GPIO, timers, and communication.","pin_description":"
    Pin Group<\/th>Name<\/th>Description<\/th><\/tr>
    I\/O<\/td>Signal pins<\/td>Primary signal interface pins<\/td><\/tr>
    Power<\/td>VCC\/VDD<\/td>Supply voltage pins<\/td><\/tr>
    Ground<\/td>GND\/VSS<\/td>Ground reference pins<\/td><\/tr>
    Control<\/td>EN, RST, CS<\/td>Enable, reset, and chip select controls<\/td><\/tr><\/table>","application_scenarios":"
    • Capacitive touch user interfaces<\/li>
    • Consumer appliance controls<\/li>
    • Industrial HMI panels<\/li>
    • Access control and security<\/li><\/ul>","alternative_models":"
      Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
      TLC3702<\/td>TI<\/td>Dual comparator, similar function<\/td><\/tr>
      MAX809<\/td>Maxim<\/td>Voltage supervisor alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/11747","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/comments?post=11747"}],"version-history":[{"count":1,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/11747\/revisions"}],"predecessor-version":[{"id":12259,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/11747\/revisions\/12259"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/media?parent=11747"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/categories?post=11747"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/tags?post=11747"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/chip_brand?post=11747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}