{"product_id":"ft232rl-usb-to-ttl-serial-adapter-5v-3-3v-uart-arduino-mcu-programmer","title":"FT232RL USB to TTL Serial Adapter — 5V \/ 3.3V, UART, Arduino \u0026 MCU Programmer","description":"\u003ch2\u003eFT232RL USB to TTL Serial Adapter — 5V \/ 3.3V, UART, Arduino \u0026amp; MCU Programmer\u003c\/h2\u003e\u003cp\u003eThis FT232RL-based USB to TTL serial adapter converts USB to 3.3V or 5V UART (TX\/RX) with hardware flow control signals (DTR, RTS, CTS, DSR). The FT232RL from FTDI is the most reliable and widely supported USB-to-UART chip, with native drivers in Windows, macOS, and Linux. It is the standard tool for programming Arduino Pro Mini, flashing ESP8266\/ESP32 firmware, and communicating with any MCU UART interface from a PC.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB Chip\u003c\/td\u003e\n\u003ctd\u003eFTDI FT232RL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB Interface\u003c\/td\u003e\n\u003ctd\u003eUSB 2.0 Full Speed (Mini USB or Micro USB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogic Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V or 5V (selectable via jumper)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUART Signals\u003c\/td\u003e\n\u003ctd\u003eTX, RX, DTR, RTS, CTS, DSR, GND, VCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Baud Rate\u003c\/td\u003e\n\u003ctd\u003e3Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (VCC)\u003c\/td\u003e\n\u003ctd\u003e50mA (3.3V) \/ 500mA (5V from USB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOS Support\u003c\/td\u003e\n\u003ctd\u003eWindows, macOS, Linux (native or VCP driver)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eFT232RL vs CH340G vs CP2102 — USB-UART Chip Comparison\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eFT232RL (FTDI)\u003c\/th\u003e\n\u003cth\u003eCH340G (WCH)\u003c\/th\u003e\n\u003cth\u003eCP2102 (Silicon Labs)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver stability\u003c\/td\u003e\n\u003ctd\u003eExcellent (FTDI VCP)\u003c\/td\u003e\n\u003ctd\u003eGood (WCH driver)\u003c\/td\u003e\n\u003ctd\u003eExcellent (Silicon Labs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003emacOS native\u003c\/td\u003e\n\u003ctd\u003eYes (10.9+)\u003c\/td\u003e\n\u003ctd\u003eRequires driver\u003c\/td\u003e\n\u003ctd\u003eYes (10.15+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLinux native\u003c\/td\u003e\n\u003ctd\u003eYes (ftdi_sio)\u003c\/td\u003e\n\u003ctd\u003eYes (ch341)\u003c\/td\u003e\n\u003ctd\u003eYes (cp210x)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax baud rate\u003c\/td\u003e\n\u003ctd\u003e3Mbps\u003c\/td\u003e\n\u003ctd\u003e2Mbps\u003c\/td\u003e\n\u003ctd\u003e1Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware flow control\u003c\/td\u003e\n\u003ctd\u003eFull (DTR\/RTS\/CTS\/DSR)\u003c\/td\u003e\n\u003ctd\u003ePartial\u003c\/td\u003e\n\u003ctd\u003eFull\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eProfessional use, macOS, high baud rate\u003c\/td\u003e\n\u003ctd\u003eCost-sensitive, Windows\u003c\/td\u003e\n\u003ctd\u003emacOS, stable driver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose FT232RL?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFTDI native drivers\u003c\/strong\u003e — most stable and widely supported USB-UART chip across all operating systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V \/ 5V selectable\u003c\/strong\u003e — single adapter works with both 5V Arduino and 3.3V ESP8266\/ESP32\/STM32\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDTR pin for auto-reset\u003c\/strong\u003e — DTR signal triggers Arduino Pro Mini auto-reset for one-click upload\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3Mbps max baud rate\u003c\/strong\u003e — highest baud rate among common USB-UART chips for fast firmware flashing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull flow control\u003c\/strong\u003e — DTR\/RTS\/CTS\/DSR for applications requiring hardware handshaking\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino Pro Mini (5V\/3.3V)\u003c\/strong\u003e: Connect TX→RX, RX→TX, DTR→DTR, GND→GND, VCC→5V or 3.3V. Auto-reset via DTR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eESP8266 (ESP-12E\/F)\u003c\/strong\u003e: 3.3V mode, TX→RX, RX→TX, DTR→GPIO0 (flash mode), RTS→RST (reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eESP32\u003c\/strong\u003e: 3.3V mode, TX→RX0, RX→TX0, DTR→GPIO0, RTS→EN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSTM32 UART boot\u003c\/strong\u003e: 3.3V mode, TX→PA10 (USART1_RX), RX→PA9 (USART1_TX)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAny MCU UART\u003c\/strong\u003e: Serial terminal communication at 3.3V or 5V\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I program Arduino Pro Mini with FT232RL?\u003c\/strong\u003e\u003cbr\u003eA: Set jumper to 5V (for 5V Pro Mini) or 3.3V (for 3.3V Pro Mini). Connect: FT232 TX → Pro Mini RX, FT232 RX → Pro Mini TX, FT232 DTR → Pro Mini DTR (or RST via 100nF capacitor), GND → GND, VCC → VCC. In Arduino IDE, select “Arduino Pro or Pro Mini” and the correct processor\/speed. Click Upload — DTR auto-resets the Pro Mini into bootloader mode.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why does my FT232RL show as “FTDI” but not as a COM port?\u003c\/strong\u003e\u003cbr\u003eA: Install the FTDI VCP (Virtual COM Port) driver from ftdichip.com. On Windows, the device may appear as “USB Serial Converter” in Device Manager — right-click and update driver to install VCP driver. On macOS 10.9+, the VCP driver is built-in. On Linux, the ftdi_sio kernel module loads automatically.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I flash ESP8266 firmware with FT232RL?\u003c\/strong\u003e\u003cbr\u003eA: Set jumper to 3.3V. Connect TX→ESP8266 RX, RX→ESP8266 TX, GND→GND, 3.3V→VCC. Pull GPIO0 to GND and RST to GND briefly to enter flash mode. Use esptool.py: \u003ccode\u003eesptool.py --port COM3 --baud 115200 write_flash 0x0 firmware.bin\u003c\/code\u003e. Release GPIO0 after flashing and reset to boot normally.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1× FT232RL USB to TTL Serial Adapter Module (5V\/3.3V selectable)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991468691691,"sku":"\u003cnone\u003e","price":7.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ft232rl-usb-to-ttl-serial-adapter-module-5v-3v3.webp?v=1761718695","url":"https:\/\/keszoox.com\/products\/ft232rl-usb-to-ttl-serial-adapter-5v-3-3v-uart-arduino-mcu-programmer","provider":"Keszoox","version":"1.0","type":"link"}