Minimum components for PCB Arduino UNO assuming the microcontroller is connected to a computer with: SparkFun FTDI Basic Breakout - 5V You will need to decide if you want to use a vertical or horizontal header to connect the FTDI breakout board to the microcontroller.

Full Speed USB to Full Handshake UART, QFN-20 FTDI USB UART interface converter QFN*4x4mm*P0.5mm*

Full Speed USB to Basic UART, SSOP-16 FTDI USB UART interface converter SSOP*3.9x4.9*P0.635mm*

Full Speed USB to 4-Bit SPI / FT1248 Bridge, SSOP-16 FTDI USB SPI FT1248 Interface Converter SSOP*3.9x4.9mm*P0.635mm*

Full Speed USB to Full Handshake UART, SSOP-20 FTDI USB UART interface converter *SSOP*3.9x8.7mm*P0.635mm*

USB 3.0 Super-Speed to 32 bits Sync FIFO, QFN-76 FTDI USB 3.0 FIFO *QFN*1EP*9x9mm*P0.4mm*

Full Speed USB to 8-Bit FIFO, QFN-24 FTDI USB FIFO interface converter QFN*4x4mm*P0.5mm*

Full Speed USB to 8-Bit SPI / FT1248 Bridge, QFN-20 FTDI USB SPI FT1248 interface converter QFN*4x4mm*P0.5mm*

Full Speed USB to 8-Bit SPI / FT1248 Bridge, SSOP-20 FTDI USB SPI FT1248 interface converter SSOP*3.9x8.7mm*P0.635mm*

Full Speed USB to I2C Bridge, SSOP-16 FTDI USB I2C Interface Converter SSOP*3.9x4.9mm*P0.635mm*

Full Speed USB to I2C Bridge, DFN-10 FTDI USB I2C Interface Converter DFN*3x3mm*P0.5mm*

SON45P300X300X80-13N 0.8mm Version 1.2 IPC-7351B FTDI

USB to Serial Interface, SSOP-28 FTDI USB Serial SSOP*5.3x10.2mm*P0.65mm* The FT232RL is a full-speed USB 2.0 to asynchronous serial data transfer IC. It integrates all the necessary USB protocol handling and UART interface logic, making it very easy to add USB connectivity to embedded devices without requiring complex firmware development. It is commonly used in development boards (like Arduino clones), USB-to-TTL converters, and debugging interfaces. Key Features USB Interface Fully compliant with USB 2.0 Full-Speed (12 Mbps) Integrated USB transceiver (no external components required) Supports USB suspend/resume modes Internal EEPROM for storing USB descriptors (no external EEPROM needed) Serial (UART) Interface Supports standard UART communication (TX, RX) Configurable baud rates from 300 bps up to 3 Mbps Supports hardware flow control (RTS/CTS, DTR/DSR) Bit-bang mode for simple GPIO control Integrated Components Built-in clock generator (no external crystal required) Internal EEPROM for configuration Integrated voltage regulator (3.3V output available for external use) Power Features Operates from 3.3V to 5V Can be powered directly from USB (bus-powered) Low power consumption with sleep mode Driver Support Virtual COM Port (VCP) drivers available for: Windows Linux macOS Also supports direct D2XX driver for advanced applications Package Typically available in SSOP-28 package Common Applications USB-to-serial converters (TTL/RS232) Microcontroller programming and debugging Embedded system communication Industrial and instrumentation interfaces

Hi Speed Single Channel USB UART/FIFO, LQFP-32 FTDI USB Single UART FIFO LQFP*7x7mm*P0.8mm*

Full Speed USB to 8-Bit FIFO, LQFP-32 FTDI USB FIFO Interface Converter LQFP*7x7mm*P0.8mm*