Overview
The FT234XD-R, produced by FTDI (Future Technology Devices International Ltd.), is a USB to UART interface IC designed to provide a seamless bridge between USB and UART interfaces. This device is particularly useful for integrating USB functionality into systems that communicate via UART. It is available in a compact 12-pin DFN package, making it ideal for space-constrained designs. The FT234XD-R supports data transfer rates from 300 baud to 3 Mbaud and is compatible with USB 2.0 Full Speed specifications. It includes a built-in EEPROM for device configuration and identification, and it is supplied in tape-and-reel packaging for automated production processes.
Key Specifications
| Parameter | Specification |
|---|---|
| Package Type | 12 Pin DFN |
| Interface Type | UART, USB |
| Data Rate | 300 baud to 3 Mbaud |
| Supply Voltage | 2.97 V to 5.5 V |
| Operating Supply Current | 8 mA (typical) |
| USB Suspend Current | 125 uA (typical) |
| Operating Temperature | -40°C to 85°C |
| Buffer Size | 512 byte receive buffer, 512 byte transmit buffer |
| EEPROM | 2048 byte for storing device descriptors and CBUS I/O configuration |
| USB Compatibility | USB 2.0 Full Speed, UHCI/OHCI/EHCI host controller compatible |
Key Features
- Single chip USB to asynchronous serial data transfer interface.
- Entire USB protocol handled on the chip; no USB-specific firmware programming required.
- Fully integrated 2048 byte EEPROM for storing device descriptors and CBUS I/O configuration.
- Fully integrated clock generation with no external crystal required; optional clock output selection.
- Configurable CBUS I/O pins and transmit/receive LED drive signals.
- UART interface support for 7 or 8 data bits, 1 or 2 stop bits, and odd/even/mark/space/no parity.
- Synchronous and asynchronous bit bang interface options with RD# and WR# strobes.
- Battery Charger Detection for higher current/faster charging of batteries.
- Device supplied pre-programmed with a unique USB serial number.
- Supports bus-powered, self-powered, and high-power bus-powered USB configurations.
- Integrated +3.3V level converter for USB I/O and true 3.3V CMOS drive output/TTL input.
- Configurable I/O pin output drive strength and internal 3.3V/1.8V LDO regulators.
- Low operating current and USB suspend current.
- Low USB bandwidth consumption.
Applications
- USB to RS232/RS422/RS485 Converters
- Upgrading Legacy Peripherals to USB
- Cellular and Cordless Phone USB data transfer cables and interfaces
- Interfacing MCU/PLD/FPGA based designs to USB
- USB Audio and Low Bandwidth Video data transfer
- PDA to USB data transfer
- USB Smart Card Readers
- USB Instrumentation
- USB Industrial Control
- USB MP3 Player Interface
- USB FLASH Card Reader and Writers
- Set Top Box PC – USB interface
- USB Digital Camera Interface
- USB Hardware Modems
- USB Wireless Modems
- USB Bar Code Readers
- Dedicated Charger Port (DCP) detection enabling battery charging at higher current for faster charge times.
Q & A
- What is the maximum data rate supported by the FT234XD-R?
The FT234XD-R supports data rates up to 3 Mbaud.
- Is the FT234XD-R compatible with Mac OS?
- Does the FT234XD-R include a built-in EEPROM?
- What is the '-R' suffix in the part number?
The '-R' suffix indicates that the FT234XD-R is supplied in tape-and-reel packaging for use in automated production processes.
- What are the operating temperature ranges for the FT234XD-R?
The FT234XD-R operates within a temperature range of -40°C to 85°C.
- Does the FT234XD-R require an external crystal for clock generation?
No, the FT234XD-R has fully integrated clock generation and does not require an external crystal.
- What is the typical operating supply current of the FT234XD-R?
The typical operating supply current is 8 mA.
- Is the FT234XD-R compatible with UHCI/OHCI/EHCI host controllers?
- What types of parity does the FT234XD-R support?
The FT234XD-R supports odd/even/mark/space/no parity.
- Does the FT234XD-R support battery charger detection?
- What is the package type for the FT234XD-R?
The FT234XD-R is available in a 12-pin DFN package.
