FTDI with Atmega8/16/328

Has anyone tried making an FTDI chip out of an Atmega microcontroller. Uno uses 16U4 to replace the FTDI chip. Similarly it is possible to do the same with Atmega8/328 or anything similar. Searched a lot on the web but couldn't find much info... Thanks and regards.

FTDI is a proprietary chip. In fact: Windows Update Driver Bricking Counterfeit FTDI Chips

What you really want is a USB to TTL serial chip. Or to write the software for an ATMEL chip that has onboard USB capability.

With that in mind:

Serial USB for any AVR controller

HID-class USB Serial Comm for AVR

USB Device Stack

Virtual USB for AVR Microcontrollers

sreedevk:
Has anyone tried making an FTDI chip out of an Atmega microcontroller.

But the universal response to such enquiries:

Why?

Nothing wrong with doing it, but since the USB to serial chips (other than the FTDI) are so cheap and functional, that you really need to have a serious reason.