{"id":5642,"date":"2026-06-11T03:48:54","date_gmt":"2026-06-11T03:48:54","guid":{"rendered":"https:\/\/materialparts.com\/lan8720a-cp-tr\/"},"modified":"2026-06-12T03:26:18","modified_gmt":"2026-06-12T03:26:18","slug":"lan8720a-cp-tr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lan8720a-cp-tr\/","title":{"rendered":"LAN8720A-CP-TR"},"content":{"rendered":"

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

The LAN8720A-CP-TR from Microchip is a small-footprint 10\/100 Ethernet PHY transceiver with RMII interface, HP Auto-MDIX, integrated 1.2V regulator, and flexible I\/O voltage in QFN-24 for embedded Ethernet connectivity.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n
\u5305\u88c5<\/td>\nQFN-24 (4x4mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
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  • See datasheet for complete specifications<\/li>\n
  • Industry-standard package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial control<\/li>\n
    • Consumer electronics<\/li>\n
    • Communication equipment<\/li>\n
    • Power management<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LAN8720A-CP-TR from Microchip is a small-footprint 10\/100 Ethernet PHY transceiver with RMII interface, HP Auto-MDIX, integrated 1.2V regulator, and flexible I\/O voltage in QFN-24 for embedded Ethernet connectivity. Key Specifications Package QFN-24 (4x4mm) Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Power management<\/p>","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":[134],"class_list":["post-5642","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-microchip"],"acf":{"brief_explanation":"10\/100 Ethernet PHY, RMII, HP Auto-MDIX, QFN-24","date_code":"","package_case":"QFN-24 (4x4mm)","in_stock":6070,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/LAN8720A","price":"$0.85 @ 1ku","product_introduction":"The LAN8720A-CP-TR from Microchip is a small-footprint 10\/100 Ethernet PHY transceiver with RMII interface, HP Auto-MDIX, integrated 1.2V regulator, and flexible I\/O voltage in QFN-24 for embedded Ethernet connectivity.","working_principle":"The LAN8720A-CP-TR is a 10\/100 Ethernet PHY transceiver from Microchip in QFN-24, with RMII interface to the MAC. The CP-TR suffix specifies commercial temperature (0C to +70C), tape-and-reel. The PHY encodes transmit data using 4B\/5B and MLT-3 encoding for 100Base-TX, or Manchester encoding for 10Base-T. The differential transmit pair (TXP\/TXN) drives the Ethernet magnetics, and the receive pair (RXP\/RXN) recovers data from the line. The RMII interface uses 7 signals at 50MHz clock, reducing pin count versus MII. The 25MHz crystal on XTAL1\/XTAL2 provides the reference; REF_CLK outputs 50MHz to the MAC. The MDIO\/MDC management interface provides access to 32 internal registers for configuration and status monitoring. Auto-negotiation selects the highest common speed\/duplex with the link partner. The HP Auto-MDIX feature automatically detects and corrects for crossover cables (straight-through vs crossover), eliminating the need for specific cable types. The RBIAS pin connects a 12.1k-ohm resistor to GND for transmit bias. The VDDCR output provides 1.2V for the internal core, requiring 2.2uF decoupling. The device consumes 45mW at 100Mbps and supports IEEE 802.3az energy-efficient Ethernet. The nINT pin generates interrupts on link status changes, enabling the MCU to poll less frequently.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VDDCR<\/td>Power<\/td>Internal 1.2V regulator output (2.2uF + 470nF decoupling)<\/td><\/tr>
      2<\/td>VDDIO<\/td>Power<\/td>I\/O supply (1.6-3.6V, typically 3.3V)<\/td><\/tr>
      3<\/td>RXD1\/MODE1<\/td>I\/O<\/td>RMII receive data 1 \/ Mode strap 1<\/td><\/tr>
      4<\/td>RXD0\/MODE0<\/td>I\/O<\/td>RMII receive data 0 \/ Mode strap 0<\/td><\/tr>
      5<\/td>VDDA<\/td>Power<\/td>Analog supply (3.3V, ferrite bead from VDDIO)<\/td><\/tr>
      6-8<\/td>TXEN\/TXD0\/TXD1<\/td>Output<\/td>RMII transmit enable and data<\/td><\/tr>
      9-14<\/td>MDC\/MDIO\/CRS_DV\/REF_CLK\/nRST\/nINT<\/td>I\/O<\/td>Management, carrier sense, clock, reset, interrupt<\/td><\/tr>
      15-24<\/td>TXP\/TXN\/RXP\/RXN\/XTAL1\/XTAL2\/RBIAS\/VDD\/EPAD<\/td>RF\/Power<\/td>PHY TX\/RX, crystal, bias, power, thermal pad<\/td><\/tr><\/table>","application_scenarios":"
    • Industrial control<\/li>
    • Consumer electronics<\/li>
    • Communication equipment<\/li>
    • Power management<\/li>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      Microchip<\/td>LAN8720AI-CP<\/td>QFN-24<\/td>Industrial temp version (-40C to +85C)<\/td><\/tr>
      Microchip<\/td>LAN8742A-CZ-TR<\/td>QFN-24<\/td>Improved, energy detect, IEEE 802.3az<\/td><\/tr>
      Realtek<\/td>RTL8201F-VB-CG<\/td>QFN-24<\/td>10\/100 PHY, RMII, low cost alternative<\/td><\/tr>
      Texas Instruments<\/td>DP83848CVV<\/td>LQFP-48<\/td>10\/100 PHY, MII\/RMII, industrial temp<\/td><\/tr>
      Analog Devices<\/td>ADIN1300BCPZ<\/td>QFN-40<\/td>Gigabit PHY, RGMII, higher performance<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5642","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=5642"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5642\/revisions"}],"predecessor-version":[{"id":6088,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5642\/revisions\/6088"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5642"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5642"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5642"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5642"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}