Product Overview
USB to TTL Serial Converter Module based on FT232RL, supporting selectable 1.8V, 3.3V, and 5V logic levels. Designed for MCU programming, firmware download, and serial communication. Provides stable USB‑UART conversion for development and debugging.
1. Product Parameters
Main IC: FT232RL
Function: USB to TTL UART converter
USB Standard: USB 2.0 Full Speed
Logic Level Options: 1.8 V / 3.3 V / 5.0 V selectable
Baud Rate: Up to 3 Mbps
Output Interface: TTL UART
Power Supply: USB powered
Driver Support: FTDI drivers
Operating Temperature: −40 °C to +85 °C
2. Pin Function Description
VCC (IN+): DC power output / logic level supply
GND: Power ground
TXD: UART transmit output
RXD: UART receive input
CTS: Clear to send input
RTS: Request to send output
DTR: Data terminal ready output
3. Common Questions & Answers (FAQ)
Q1: What is this module mainly used for?
A1: It is used for USB‑to‑TTL serial communication and MCU programming.
Q2: Which logic voltage levels are supported?
A2: It supports 1.8V, 3.3V, and 5V selectable levels.
Q3: Does it require drivers on the PC?
A3: Yes, standard FT232RL drivers are required.
Q4: Can it power the target device?
A4: It can supply limited current for small circuits.
Q5: Is it compatible with common microcontrollers?
A5: Yes, it works with most TTL‑level UART devices.