FT230XQ-R is a USB-to-UART interface IC from FTDI, designed to add USB connectivity to systems with a basic UART interface. With integrated USB protocol handling and configurable interfaces, the FT230XQ-R is widely used in MCU, FPGA, development, industrial, and USB-to-serial applications.
FT230XQ-R Description
FT230XQ-R is designed to add USB connectivity to systems with a UART interface. It supports USB 2.0 Full-Speed communication at 12 Mbps and UART data rates from 300 baud to 3 Mbaud. The device integrates USB protocol handling, clock generation, and a 2048-byte MTP memory, reducing the need for additional external components and USB-specific firmware.
The FT230XQ-R uses a compact 16-pin QFN package and supports 1.8V to 3.3V I/O, with an operating temperature range of -40°C to +85°C. It also provides 512-byte transmit and receive buffers and supports FTDI's VCP and D2XX drivers.
FT230XQ-R Specifications
This section lists the key specifications of the FT230XQ-R USB-to-UART interface IC.
Parameter | Value |
Part Number | FT230XQ-R |
Manufacturer | FTDI |
Description | IC USB SERIAL BASIC UART 16QFN |
Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
Protocol | USB |
Interface | UART |
Function | Bridge, USB to UART |
Voltage - Supply | 3.3 V ~ 5 V |
Current - Supply | 8mA |
Standards | USB 2.0 |
Packaging | Digi-Reel® |
Operating Temperature | -40°C ~ 85°C |
Supplier Device Package | 16-QFN (4x4) |
Package / Case | 16-WQFN Exposed Pad |
Base Part Number | FT230XQ |
FT230XQ-R Key Features
l Single-chip USB-to-asynchronous serial data transfer interface.
l Entire USB protocol handled on the chip. No USB-specific firmware programming required.
l Fully integrated 2048-byte multi-time programmable (MTP) memory, storing device descriptors and CBUS I/O configuration.
l Fully integrated clock generation with no external crystal required, plus optional clock output selection enabling a glue-less interface to external MCU or FPGA.
l Data transfer rates from 300 baud to 3 Mbaud (RS422, RS485, and RS232) at TTL levels.
l 512-byte receive buffer and 512-byte transmit buffer utilising buffer smoothing technology to allow for high data throughput.
l FTDI’s royalty-free Virtual COM Port (VCP) and Direct (D2XX) drivers eliminate the requirement for USB driver development in most cases.
l Configurable CBUS I/O pins.
l Transmit and receive LED drive signals.
l UART interface support for 7 or 8 data bits, 1 or 2 stop bits, and odd / even / mark / space / no parity
l Synchronous and asynchronous bit-bang interface options with RD# and WR# strobes.
l USB Battery Charger Detection. Allows for USB peripheral devices to detect the presence of a higher power source to enable improved
l charging.
l Device supplied pre-programmed with unique USB serial number.
l USB Power Configurations; supports bus- powered, self-powered and bus-powered with power switching.
l Integrated +3.3V level converter for USB I/O.
FT230XQ-R Pinout
The FT230XQ-R is housed in a 16-pin QFN package. Below is its pinout breakdown:
Power & Control
VCC (Pin 10): Main power supply.
VCCIO (Pin 1): UART/CBUS I/O supply voltage (1.8V–3.3V).
3V3OUT (Pin 8): 3.3V internal LDO output.
GND (Pins 3, 13, 17): Ground and center thermal pad (Pin 17).
RESET# (Pin 9): Active-low hardware reset.
USB Interface
USBDM (Pin 7): USB D- signal line.
USBDP (Pin 6): USB D+ signal line.
UART Lines
TXD (Pin 15): Transmit data output.
RXD (Pin 2): Receive data input.
RTS# (Pin 16): Request to Send flow control.
CTS# (Pin 4): Clear to Send flow control.
Configurable CBUS Pins
CBUS0–3 (Pins 12, 11, 5, 14): Configurable I/O pins for status LEDs, power enable, sleep modes, or clock output.
FT230XQ-R UART Interface
The FT230XQ-R provides a basic UART interface for reliable serial communication between a USB host and embedded devices such as MCUs, FPGAs, and other controllers. It supports UART data rates from 300 baud to 3 Mbaud, providing flexibility for different communication requirements.
l TXD and RXD: TXD transmits serial data, while RXD receives data between the FT230XQ-R and the connected UART device.
l RTS# and CTS#: These pins support hardware flow control, helping manage data transmission between the host and target device.
l Baud Rate: The UART interface supports data rates up to 3 Mbaud.
l Data Transmission: USB data received from the host is converted into UART data, while incoming UART data can be sent back to the host through USB.
l Hardware Flow Control: RTS# and CTS# can be used to control data flow and help prevent data loss when the receiving device cannot process data fast enough.
FT230XQ-R USB Interface
The FT230XQ-R also provides a USB 2.0 Full-Speed interface for connecting embedded devices to a USB host such as a PC. It handles USB communication internally and converts USB data into UART data, making it easier to add USB connectivity to systems without a native USB interface.
l USB 2.0 Full-Speed: Supports USB Full-Speed communication at up to 12 Mbps.
l D+ and D-: These differential data lines connect the FT230XQ-R to the USB host and carry USB communication signals.
l USB Host Connection: The FT230XQ-R operates as a USB device and can connect to PCs, laptops, and other USB hosts.
l USB Device Enumeration: When connected, the host identifies and configures the FT230XQ-R through the standard USB enumeration process before data communication begins.
FT230XQ-R Power Supply and Operating Modes
The FT230XQ-R supports flexible power configurations for different USB and embedded system designs. Its VCC, VCCIO, and 3V3OUT pins handle the main power and I/O requirements, while the device can be designed as either USB bus-powered or self-powered.
l VCC: Provides the main supply voltage for the FT230XQ-R.
l VCCIO: Sets the voltage level for the UART and CBUS I/O pins, supporting different logic-level requirements.
l 3V3OUT: Provides a regulated 3.3V output from the internal regulator for use with the device's internal circuitry and suitable external applications.
l USB Bus-Powered Configuration: The FT230XQ-R can draw power directly from the USB VBUS supply, making it suitable for compact USB-to-UART devices.
l Self-Powered Configuration: In systems with their own power source, the FT230XQ-R can operate from the system's supply while maintaining USB communication.
FT230XQ-R Block Diagram
The FT230XQ-R block diagram shows the main internal functional blocks and how they work together.
FT230XQ-R Typical Applications
The FT230XQ-R is designed to add USB connectivity to systems that use a basic UART interface. Its compact package, USB Full-Speed support, and UART data rates up to 3 Mbaud make it suitable for embedded and USB-to-serial applications.
1. USB-to-UART Adapters
The FT230XQ-R can convert USB data to UART signals, making it suitable for USB-to-serial adapters used to connect PCs with UART-based devices.
2. MCU and Embedded Systems
It can add USB connectivity to microcontroller-based systems that do not have a native USB interface, allowing data exchange between the MCU and a PC.
3. FPGA and PLD Systems
The device provides a simple USB communication interface for FPGA and PLD development boards, testing platforms, and embedded systems.
4. Industrial Equipment
The FT230XQ-R can be used for serial communication, configuration, monitoring, and data transfer in industrial control equipment.
5. Development and Debugging Tools
Its USB-to-UART conversion makes it useful for development boards, programming tools, and debugging interfaces that require PC-to-device serial communication.
6. USB Serial Devices
The FT230XQ-R can be integrated into various USB peripherals that need a reliable bridge between a USB host and a UART-based system.
FT230XQ-R Package Parameter
This section covers the package type, pin count, dimensions, and other details needed for hardware integration.
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