Tag Archives: FT232R

Customer solution: Trouble-free RS232, RS422, RS485 to USB conversion


Integrated circuit FT232R is becoming legendary and we bring you another example of FTDI USB chips usage.  

In praxis we often face a requirement to communicate with devices, which have serial ports RS232, RS422 and RS485. As many devices – mainly notebooks, already usually don´t have these ports, it is necessary to use a converter to convert serial port to USB.

Company ComErgon, s.r.o. is long-term dedicated to development and production of such converters. ComErgon has in its offer models for  RS232, RS422 a RS485 interfaces. USB to RS422 and RS485 converters are produced with a 1kV galvanic isolation, as lines on the RS422 and RS485 side can be lead  even on long distances and an eventual overvoltage could be able to damage end devices. Version RS232-USB is available with galvanic isolation but also without isolation.

More detailed information and technical specification of these converters can be found at website of company ComErgon.
Company ComErgon focuses on development and production of converters for RS232, RS422, RS485, RS422/RS485 repeaters, serial to Ethernet interface modules, GPRS, Fiber Optic, 433MHz, current loop and other.

Customer solution: Trouble-free  RS232, RS422, RS485 to USB conversion – [Link]

Single chip USB/UART FT232R

The FT232R is the latest device to be added to FTDI’s range of USB UART interface Integrated Circuit Devices. The FT232R is a USB to serial UART interface with optional clock generator output, and the new FTDIChip-ID™ security dongle feature. In addition, asynchronous and synchronous bit bang interface modes are available. USB to serial designs using the FT232R have been further simplified by fully integrating the external EEPROM, clock circuit and USB resistors onto the device.

The FT232R adds two new functions compared with its predecessors, effectively making it a “3-in-1

USB controlled DDS signal generator with ATmega88

This is a simple signal generator which produces sine waves (or any waveform really) at audio frequencies using DDS and is controlled a USB serial connection.Only 2 chips are used in this circuit. The AVR ATmega88 which produces the signal, and an FT232R for the USB interface. While a computer is required to control the varying frequency of the oscillator, a fixed frequency project could be made without the USB interface. [via]

USB controlled DDS signal generator with ATmega88 – [Link]