{"id":2529,"date":"2026-05-22T03:29:29","date_gmt":"2026-05-22T03:29:29","guid":{"rendered":"https:\/\/materialparts.com\/ft232rq-reel\/"},"modified":"2026-05-22T03:29:29","modified_gmt":"2026-05-22T03:29:29","slug":"ft232rq-reel","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ft232rq-reel\/","title":{"rendered":"FT232RQ-REEL"},"content":{"rendered":"

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

The FT232RQ-REEL from FTDI Chip is a USB to serial UART bridge interface IC in a QFN-32 package. It integrates an entire USB protocol engine, EEPROM, clock generation circuitry, and USB termination resistors in a single chip. The device supports data transfer rates up to 3MBaud with 256-byte TX and 128-byte RX FIFO buffers, and provides multi-protocol serial interface options including RS232, RS422, and RS485.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
USB Standard<\/td>\nUSB 2.0 Full Speed (12Mbps)<\/td>\n<\/tr>\n
Max Data Rate<\/td>\n3MBaud<\/td>\n<\/tr>\n
TX FIFO<\/td>\n256 bytes<\/td>\n<\/tr>\n
RX FIFO<\/td>\n128 bytes<\/td>\n<\/tr>\n
IO Voltage<\/td>\n1.8V to 5.25V<\/td>\n<\/tr>\n
Supply Current<\/td>\n15mA typical<\/td>\n<\/tr>\n
Suspend Current<\/td>\n70uA typical<\/td>\n<\/tr>\n
CBUS Pins<\/td>\n5 configurable I\/O<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +85C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nQFN-32 (5x5mm)<\/td>\n<\/tr>\n
Status<\/td>\nEOL (replaced by FT232RNQ)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Single-chip USB to UART bridge solution<\/li>\n
  • Integrated EEPROM for USB VID\/PID\/serial number<\/li>\n
  • Integrated USB termination resistors<\/li>\n
  • Integrated clock generation (no external crystal needed)<\/li>\n
  • Multi-protocol support (RS232, RS422, RS485, TTL)<\/li>\n
  • 5 configurable CBUS pins for status and control<\/li>\n
  • Adjustable IO voltage from 1.8V to 5.25V<\/li>\n
  • Supports bus-powered and self-powered configurations<\/li>\n
  • FIFO receive and transmit buffers for smooth data flow<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • USB to RS232\/RS485\/RS422 adapter cables<\/li>\n
    • Embedded system debug and programming interfaces<\/li>\n
    • Industrial equipment USB connectivity<\/li>\n
    • Legacy serial device USB upgrade<\/li>\n
    • Arduino and maker board USB interface<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The FT232RQ-REEL from FTDI Chip is a USB to serial UART bridge interface IC in a QFN-32 package. It integrates an entire USB protocol engine, EEPROM, clock generation circuitry, and USB termination resistors in a single chip. The device supports data transfer rates up to 3MBaud with 256-byte TX and 128-byte RX FIFO […]<\/p>\n","protected":false},"author":2,"featured_media":2531,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[186],"class_list":["post-2529","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ftdi"],"acf":{"brief_explanation":"USB to UART Bridge IC, 3MBaud, integrated EEPROM\/clock, QFN-32","date_code":"","package_case":"QFN-32 (5.0 x 5.0 x 0.9 mm)","in_stock":2716,"datasheet":"https:\/\/ftdichip.com\/products\/ft232rq\/","price":"$4.50 @ 1ku","product_introduction":"The FT232RQ-REEL from FTDI Chip is a complete USB to serial UART bridge interface in a compact QFN-32 package. It integrates all necessary USB functionality including protocol handling, EEPROM for configuration storage, clock generation, and USB termination resistors, requiring no external components beyond a bypass capacitor. Supporting data rates up to 3MBaud with 256\/128-byte TX\/RX FIFOs, it provides reliable USB connectivity for embedded systems. The device supports multi-protocol serial communication including RS232, RS422, and RS485 through external transceivers. Note: this device is EOL and being replaced by the FT232RNQ.","working_principle":"The FT232RQ-REEL functions as a bridge between the USB bus and a UART serial port. On the USB side, the internal USB protocol engine handles enumeration, data packet formatting, and all USB 2.0 Full Speed protocol requirements. The integrated EEPROM stores USB descriptors including VID, PID, and serial number. On the UART side, data from the USB host is written to the TX FIFO buffer and transmitted serially at the configured baud rate. Incoming serial data is captured into the RX FIFO and sent to the USB host. The 5 CBUS pins can be configured for various functions including TX\/RX LED indicators, power enable, and wake-up signals. The adjustable VCCIO pin sets the IO voltage independently from the USB supply.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VCC<\/td>Power<\/td>3.3V internal regulator output (bypass only)<\/td><\/tr>
      2<\/td>3V3OUT<\/td>Power<\/td>3.3V regulated output<\/td><\/tr>
      3<\/td>USBDP<\/td>I\/O<\/td>USB data positive (D+)<\/td><\/tr>
      4<\/td>USBDM<\/td>I\/O<\/td>USB data negative (D-)<\/td><\/tr>
      5<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      6<\/td>RESET<\/td>Control<\/td>Reset (active low, internal pull-up)<\/td><\/tr>
      7<\/td>VCCIO<\/td>Power<\/td>IO voltage reference (1.8-5.25V)<\/td><\/tr>
      8<\/td>TXD<\/td>Output<\/td>UART transmit data<\/td><\/tr>
      9<\/td>RXD<\/td>Input<\/td>UART receive data<\/td><\/tr>
      10<\/td>RTS<\/td>Output<\/td>Request to send (active low)<\/td><\/tr>
      11<\/td>CTS<\/td>Input<\/td>Clear to send (active low)<\/td><\/tr>
      12<\/td>DTR<\/td>Output<\/td>Data terminal ready (active low)<\/td><\/tr>
      13<\/td>DSR<\/td>Input<\/td>Data set ready (active low)<\/td><\/tr>
      14<\/td>DCD<\/td>Input<\/td>Data carrier detect (active low)<\/td><\/tr>
      15<\/td>RI<\/td>Input<\/td>Ring indicator (active low)<\/td><\/tr>
      16-20<\/td>CBUS0-4<\/td>I\/O<\/td>Configurable I\/O pins<\/td><\/tr>
      21<\/td>EECS<\/td>Control<\/td>EEPROM chip select<\/td><\/tr>
      22<\/td>EECLK<\/td>Control<\/td>EEPROM clock<\/td><\/tr>
      23<\/td>EEDATA<\/td>I\/O<\/td>EEPROM data<\/td><\/tr>
      24<\/td>TEST<\/td>Test<\/td>Test pin (connect to GND)<\/td><\/tr>
      25-28<\/td>VDD\/GND<\/td>Power<\/td>Supply and ground<\/td><\/tr><\/table>","application_scenarios":"
      • USB to RS232\/RS485 serial adapter cables and dongles<\/li>
      • Embedded MCU debug and programming interfaces<\/li>
      • Industrial equipment USB communication ports<\/li>
      • Legacy serial device USB connectivity upgrade<\/li>
      • Maker and development board USB serial interface<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        FTDI<\/td>FT232RNQ<\/td>QFN-32<\/td>Direct replacement (RoHS compliant)<\/td><\/tr>
        FTDI<\/td>FT232RL<\/td>SSOP-28<\/td>Through-hole friendly version<\/td><\/tr>
        Silicon Labs<\/td>CP2102N-A02-GQFN24<\/td>QFN-24<\/td>Smaller footprint USB-UART bridge<\/td><\/tr>
        WCH<\/td>CH340G<\/td>SOP-16<\/td>Low-cost USB-UART alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2529","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=2529"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2529\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/2531"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=2529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=2529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=2529"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=2529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}