{"id":3739,"date":"2026-06-08T02:54:03","date_gmt":"2026-06-08T02:54:03","guid":{"rendered":"https:\/\/materialparts.com\/cp2102n-a02-gqfn20\/"},"modified":"2026-06-08T02:54:03","modified_gmt":"2026-06-08T02:54:03","slug":"cp2102n-a02-gqfn20","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/cp2102n-a02-gqfn20\/","title":{"rendered":"CP2102N-A02-GQFN20"},"content":{"rendered":"

Productos<\/h2>\n

The CP2102N-A02-GQFN20 from Silicon Labs is a USBXpress USB-to-UART bridge controller in a compact 3x3mm QFN-20 package. It integrates USB 2.0 full-speed transceiver, clock, and voltage regulator, requiring no external crystal or resistors.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Interface<\/td>\nUSB 2.0 Full-Speed to UART<\/td>\n<\/tr>\n
USB Speed<\/td>\n12 Mbps (Full-Speed)<\/td>\n<\/tr>\n
UART Baud Rate<\/td>\n300 baud to 3 Mbaud<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n3.0V to 3.6V (self) \/ 3.0V to 5.25V (bus)<\/td>\n<\/tr>\n
Operating Current<\/td>\n9.5mA (typ, active)<\/td>\n<\/tr>\n
Suspend Current<\/td>\n1.3uA (typ)<\/td>\n<\/tr>\n
Data Bits<\/td>\n5, 6, 7, 8<\/td>\n<\/tr>\n
Stop Bits<\/td>\n1, 1.5, 2<\/td>\n<\/tr>\n
Parity<\/td>\nNone, Even, Odd, Mark, Space<\/td>\n<\/tr>\n
GPIOs<\/td>\n4 (QFN-20 version)<\/td>\n<\/tr>\n
TX\/RX Buffer<\/td>\n512 bytes each<\/td>\n<\/tr>\n
Paquete<\/td>\nQFN-20 (3 x 3 x 0.75 mm)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • No firmware development required<\/li>\n
  • Integrated USB transceiver – no external resistors<\/li>\n
  • Integrated clock – no external crystal required<\/li>\n
  • Internal 960-byte programmable ROM for VID\/PID\/strings<\/li>\n
  • On-chip 3.3V voltage regulator output<\/li>\n
  • USB battery charger detection (BCS 1.2)<\/li>\n
  • USB remote wakeup capability<\/li>\n
  • Royalty-free VCP drivers for Windows, Mac, Linux<\/li>\n
  • Hardware flow control (RTS\/CTS, DSR\/DTR) and Xon\/Xoff<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • USB dongles and adapters<\/li>\n
    • POS terminals<\/li>\n
    • Medical equipment data loggers<\/li>\n
    • Gaming controllers<\/li>\n
    • Industrial equipment USB connectivity<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The CP2102N-A02-GQFN20 from Silicon Labs is a USBXpress USB-to-UART bridge controller in a compact 3x3mm QFN-20 package. It integrates USB 2.0 full-speed transceiver, clock, and voltage regulator, requiring no external crystal or resistors. Key Specifications Interface USB 2.0 Full-Speed to UART USB Speed 12 Mbps (Full-Speed) UART Baud Rate 300 baud to 3 […]<\/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":[184],"class_list":["post-3739","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-silabs"],"acf":{"brief_explanation":"USB-to-UART bridge, USB 2.0 FS, 3Mbaud, QFN20 3x3mm, no ext crystal, VCP drivers","date_code":"","package_case":"QFN-20 (3 x 3 x 0.75 mm, 0.5mm pitch)","in_stock":8164,"datasheet":"https:\/\/www.silabs.com\/documents\/public\/data-sheets\/cp2102n-datasheet.pdf","price":"$2.08 @ 2.5ku","product_introduction":"The CP2102N-A02-GQFN20 from Silicon Labs is a highly integrated USB-to-UART bridge controller from the USBXpress family, designed to quickly add USB connectivity to applications with minimal external components. The device integrates a USB 2.0 full-speed function controller, USB transceiver with on-chip matching and pull-up resistors, precision oscillator (no external crystal required), on-chip 3.3V voltage regulator, and a full-featured UART with modem control signals. The 20-pin QFN package measuring only 3x3mm makes it one of the smallest USB-to-UART solutions available. The CP2102N supports UART baud rates from 300 baud to 3 Mbaud with configurable data formats (5-8 data bits, 1\/1.5\/2 stop bits, multiple parity options). A 960-byte internal programmable ROM stores USB descriptors including Vendor ID, Product ID, serial number, and product description strings, which can be customized using Silicon Labs' simple GUI-based configurator tool. The device requires no firmware development, and royalty-free Virtual COM Port (VCP) drivers are available for Windows, Mac, and Linux. With 512-byte transmit and receive buffers and support for hardware flow control, the CP2102N handles high-speed data transfer reliably.","working_principle":"The CP2102N-A02-GQFN20 operates as a bridge between USB and UART serial interfaces. Key subsystems include: (1) USB Function Controller - a USB 2.0 full-speed (12Mbps) device controller that manages all USB protocol requirements including enumeration, data transfers, and power management; the integrated USB transceiver includes on-chip matching and pull-up resistors, eliminating external USB components; (2) UART Interface - a full-featured UART with TX, RX, RTS, CTS, DSR, DTR, DCD, and RI signals; supports hardware flow control (RTS\/CTS, DSR\/DTR) and software flow control (Xon\/Xoff); 512-byte TX and RX FIFO buffers prevent data loss at high baud rates; (3) Internal Oscillator - a precision on-chip oscillator eliminates the need for an external crystal; the 48MHz clock source is used for both USB timing and baud rate generation; (4) Voltage Regulator - an integrated 3.3V LDO provides regulated output for external circuitry; the device can be powered from 3.0-3.6V (self-powered) or 3.0-5.25V (USB bus-powered); (5) Configuration ROM - 960 bytes of one-time programmable ROM stores USB descriptors and device customization data; programmed via Silicon Labs' GUI configurator; (6) Power Management - USB suspend detection with SUSPEND\/SUSPENDb output pins; remote wakeup via WAKEUP pin; low suspend current of 1.3uA typical.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VREGIN<\/td>Power<\/td>Input supply (3.0-5.25V for bus-powered)<\/td><\/tr>
      2<\/td>VDD<\/td>Power<\/td>3.0-3.6V supply \/ regulator output<\/td><\/tr>
      3<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      4<\/td>D+<\/td>I\/O<\/td>USB D+ data line<\/td><\/tr>
      5<\/td>D-<\/td>I\/O<\/td>USB D- data line<\/td><\/tr>
      6<\/td>TXD<\/td>Output<\/td>UART transmit data<\/td><\/tr>
      7<\/td>RXD<\/td>Input<\/td>UART receive data<\/td><\/tr>
      8<\/td>RTS<\/td>Output<\/td>UART request to send<\/td><\/tr>
      9<\/td>CTS<\/td>Input<\/td>UART clear to send<\/td><\/tr>
      10-13<\/td>GPIO0-3<\/td>I\/O<\/td>General-purpose I\/O pins<\/td><\/tr>
      14<\/td>SUSPEND<\/td>Output<\/td>USB suspend indicator (active high)<\/td><\/tr>
      15<\/td>SUSPENDb<\/td>Output<\/td>USB suspend indicator (active low)<\/td><\/tr>
      16-20<\/td>RST\/DTR\/RI\/etc<\/td>Mixed<\/td>Reset, modem control, and power pins<\/td><\/tr><\/table>","application_scenarios":"
      • USB debug port: add USB-to-UART to MCU boards without native USB for firmware development<\/li>
      • POS terminal: USB connectivity for receipt printers and barcode scanners<\/li>
      • Medical device: isolated USB data logging from patient monitoring equipment<\/li>
      • Industrial adapter: USB-to-RS232\/RS485 converter dongles with compact form factor<\/li>
      • Gaming controller: USB interface for custom game controllers and joysticks<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Silicon Labs<\/td>CP2102N-A02-GQFN28<\/td>QFN-28 (5x5mm)<\/td>7 GPIOs, pin-compatible with CP2101<\/td><\/tr>
        Silicon Labs<\/td>CP2102N-A02-GQFN24<\/td>QFN-24 (4x4mm)<\/td>6 GPIOs, pin-compatible with CP2104<\/td><\/tr>
        FTDI<\/td>FT230XQ-R<\/td>QFN-16 (4x4mm)<\/td>Similar USB-UART, FTDI drivers<\/td><\/tr>
        CH340<\/td>CH340N<\/td>SOP-8<\/td>Low-cost Chinese alternative<\/td><\/tr>
        Microchip<\/td>MCP2221A-I-ST<\/td>QFN-16<\/td>USB 2.0 to UART\/I2C<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=3739"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3739\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3739"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}