{"id":6557,"date":"2026-06-18T13:52:11","date_gmt":"2026-06-18T13:52:11","guid":{"rendered":"https:\/\/materialparts.com\/pcf85176h-1\/"},"modified":"2026-06-18T13:52:11","modified_gmt":"2026-06-18T13:52:11","slug":"pcf85176h-1","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/pcf85176h-1\/","title":{"rendered":"PCF85176H\/1"},"content":{"rendered":"

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

The PCF85176H\/1 from NXP Semiconductors is a 40×4 universal LCD driver for low multiplex rates. It generates drive signals for static or multiplexed LCDs with up to four backplanes and 40 segments, communicating via I2C at 400kHz. Packaged in a 64-pin TQFP (10x10mm).<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Segments<\/td>\n40 segment outputs<\/td>\n<\/tr>\n
Backplanes<\/td>\n4 (static, 2, 3, or 4 MUX)<\/td>\n<\/tr>\n
Display RAM<\/td>\n40 x 4-bit<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n1.8V to 5.5V<\/td>\n<\/tr>\n
LCD Supply<\/td>\n2.5V to 6.5V<\/td>\n<\/tr>\n
Interface<\/td>\nI2C, 400kHz<\/td>\n<\/tr>\n
Supply Current<\/td>\n7uA (max)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nTQFP-64 (10x10mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Single-chip LCD controller and driver<\/li>\n
  • Selectable backplane configuration: static, 2, 3, or 4 MUX<\/li>\n
  • Internal LCD bias generation with voltage-follower buffers<\/li>\n
  • Auto-incremented display data loading<\/li>\n
  • Display memory bank switching<\/li>\n
  • Versatile blinking modes<\/li>\n
  • Cascadable for large LCDs (up to 2560 segments)<\/li>\n
  • No external components required<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Consumer LCD displays<\/li>\n
    • Industrial instrument panels<\/li>\n
    • Home automation displays<\/li>\n
    • Metering and measurement readouts<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The PCF85176H\/1 from NXP Semiconductors is a 40×4 universal LCD driver for low multiplex rates. It generates drive signals for static or multiplexed LCDs with up to four backplanes and 40 segments, communicating via I2C at 400kHz. Packaged in a 64-pin TQFP (10x10mm). Key Specifications Segments 40 segment outputs Backplanes 4 (static, 2, […]<\/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":[],"chip_brand":[168],"class_list":["post-6557","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-microcontrollers-processors","chip_brand-nxp"],"acf":{"brief_explanation":"40x4 universal LCD driver, I2C 400kHz, 1.8-5.5V, TQFP-64, cascadable","date_code":"","package_case":"TQFP-64 (10x10x1.0mm)","in_stock":4581,"datasheet":"https:\/\/www.nxp.com\/docs\/en\/data-sheet\/PCF85176.pdf","price":"$1.38 @ 1ku","product_introduction":"The PCF85176H\/1 from NXP Semiconductors is a versatile peripheral device that interfaces microcontrollers to a wide variety of LCD displays with low multiplex rates. It generates drive signals for any static or multiplexed LCD containing up to four backplanes and 40 segments. The device communicates via a 400kHz I2C-bus interface and features auto-incremented addressing, hardware subaddressing, and display memory switching. Internal LCD bias generation eliminates external components. Multiple devices can be cascaded for large LCD applications with up to 2560 segments. The very low supply current of 7uA makes it suitable for battery-powered applications.","working_principle":"The PCF85176H\/1 operates as an I2C peripheral that receives display data from a master microcontroller and drives LCD segments and backplanes directly. The 40x4-bit display RAM stores the on\/off state for each segment under each backplane configuration. The I2C interface supports auto-incremented addressing for efficient block data transfers. The internal bias generator creates the required LCD drive voltages with voltage-follower buffers for clean drive waveforms. The backplane and segment outputs generate the multiplexed AC drive waveforms needed to maintain LCD segments without DC bias. The device supports selectable multiplex rates (static, 2, 3, or 4 backplanes) and bias configurations (static, 1\/2, or 1\/3).","pin_description":"
      Pin Group<\/th>Count<\/th>Function<\/th><\/tr>
      Segment Outputs<\/td>40<\/td>S0-S39 LCD segment drivers<\/td><\/tr>
      Backplane Outputs<\/td>4<\/td>BP0-BP3 LCD backplane drivers<\/td><\/tr>
      I2C<\/td>2<\/td>SDA, SCL serial bus<\/td><\/tr>
      Address<\/td>3<\/td>A0-A2 subaddress inputs<\/td><\/tr>
      Control<\/td>3<\/td>OSC, SYNC, SA0<\/td><\/tr>
      Power<\/td>3<\/td>VDD, VSS, VLCD<\/td><\/tr>
      NC<\/td>9<\/td>Not connected<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial instrument panels with custom LCD displays up to 160 elements<\/li>
      • Consumer electronics requiring segment LCD control via I2C<\/li>
      • Metering systems with cascaded LCD drivers for large display areas<\/li>
      • Battery-powered devices needing low-current LCD driving with 7uA supply current<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        PCF85176T\/1<\/td>NXP<\/td>TSSOP-56 package variant<\/td><\/tr>
        PCF8576CU\/2<\/td>NXP<\/td>Earlier generation, 40x4 LCD driver<\/td><\/tr>
        HT16K33<\/td>Holtek<\/td>16x8 LED driver with I2C<\/td><\/tr>
        NJU6450<\/td>NJRC<\/td>80-segment LCD driver<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6557","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=6557"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6557\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6557"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}