Highly integrated design delivers strong performance & breadth of functionality while taking up only limited board space
USB solutions specialist Future Technology Devices International Limited (FTDI) has further expanded its X-Chip series of feature-rich USB-to-serial interface chips with the introduction of the ultra-compact FT234XD. Contained in a 3mm × 3mm 12-pin DFN package that is optimised for smaller PCB designs, this highly integrated UART interface IC allows asynchronous serial data transfer - supporting data transfer rates from 300 bits/s to 3 Mbits/s.
The device boasts low power operation, typically drawing only 8 mA when active and 70µA in suspend mode. Its built-in clock generation capability means that an external crystal is not required. Furthermore, optional clock output selection enables glue-less interfacing with the system microcontroller or FPGA. The 512 byte receive/transmit buffers, utilising buffer smoothing technology, markedly enhance data throughput. An integrated 2048 byte multi-time-programmable (MTP) memory has also been included for storing device descriptors and carrying out CBUS I/O configuration.
The FT234XD’s sophisticated USB battery charger detection (BCD) mechanism enables USB peripheral devices to perceive connection to a higher rated power source, thereby facilitating more efficient charging. An operational temperature range of –40 °C to +85 °C allows the device to be specified for harsh working environments.
As all the USB protocol and IO bridging is handled on the chip there is no need for USB specific firmware programming. When FTDI’s drivers are not supported in the native operating system, royalty-free Virtual Com Port (VCP) and D2XX drivers (which can be downloaded from the company website) are available, Driver updates and maintenance are provided for the life of the product at no charge.
Pricing for the FT234XD starts at US $1.97 (for 10-49 pcs).
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USB Bus Powered Configuration. |
