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UMP2: USB-Parallel FIFO Converter

   >>> Home 2010-11-03  

The best way to USB


UMP2 is an USB->Parallel 8-bit FIFO interface module based on the FT245BL chip made by FTDI. It enables very easy connection of the user's application to the PC via the USB port, without necessity of any deep knowledge about the complicated USB problematics.

On the USB side of UMP2 there are 2 signals D+ and D-, on the opposite side there is 8-bit bidirectional bus and 4 handshaking signals (with the TTL level) for data flow control. UMP2 is capable to transfer data at speeds up to 1 MByte per second. UMP2 contains the on-board serial EEPROM (93LC56) for storing the ID data (VID, PID, ID string).

UMP2 is manufactured as a DIP28 device with standard pin distance of 2.54 mm (0.1"). It can be put into standard or precision DIP socket or it can be directly soldered to user application PCB. It saves time and money in small series production.

The USB connector is to be connected separately, the designer has flexibility in the PCB layout and mechanical design in comparison to modules with built-in USB connector. Also, the A-type, B-type connector or even cable can be used.

New 'B' series USB interface chips by FTDI have many new features compared to original 'A' series. One the most interesting is a Bit-Bang mode which allows the devices (and consequently also UMP2 module) to be used for FPGA configuration or microcontroller firmware upgrade.

Another feature is 5 V / 3 V interface capability.

Great advantage of FTDI based USB solution is that the drivers are freely available on the Internet. The supported operating systems are Windows 98SE/ME/2K/XP, Mac and Linux. The software examples for Borland Delphi and C++ Builder and Microsoft Visual C++ and Visual Basic are available, too. There are two types of drivers - Virtual COM port (emulates the standard COM port, the accessibility is via standard COM functions) and direct drivers with functions such as FT_Open, FT_Close, FT_ResetDevice, FT_Write, FT_Read, FT_GetStatus, FT_SetBaudRate, FT_SetFlowControl, FT_SetDTR, FT_ClrDTR, ...



[UMP2]

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Supported devices

  • Any microcontroller with sufficient number of pins (8 data and 4 handshaking)
  • Any programmable logic device

Features

  • Based on FTDI chip FT245BL
  • DIP28, standard pin size
  • Ideal solution for development and small series production
  • Low cost
  • Free drivers: Windows 98SE/ME/2K/XP, Mac and Linux
  • Free software examples with source code downloadable from Internet
  • RoHS compliant

Contents

  • UMP2 module

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