The UM245R is a development module which uses FTDI’s FT245RL, the latest device to be added to FTDI’s range of USB UART interface Integrated Circuit Devices. The FT245R is a USB to parallel FIFO interface, with the new FTDIChip-ID™ security dongle feature. In addition, asynchronous and synchronous bit bang interface modes are available. USB to parallel designs using the FT245R have been further simplified by fully integrating the external EEPROM, clock circuit and USB resistors onto the device. The FT245R adds a new function compared with its predecessors, effectively making it a “2-in-1” chip for some application areas. A unique number (the FTDIChip-ID™) is burnt into the device during manufacture and is readable over USB, thus forming the basis of a security dongle which can be used to protect customer application software from being copied. The UM245R is supplied on a PCB which is designed to plug into a standard 15.0mm (0.6”) wide 24 pin DIP socket. All components used, including the FT232RL are Pb-free (RoHS compliant).
The UM245R is a development module that implements FTDI’s FT245R USB‑to‑parallel FIFO interface with the FTDIChip‑ID™ security dongle feature. It provides both asynchronous and synchronous bit‑bang modes, integrated EEPROM, clock circuit and USB resistors, simplifying USB‑parallel designs.
The module is supplied on a PCB that fits a standard 15 mm wide 24‑pin DIP socket and includes on‑board power options, jumper‑selectable voltage levels (1.8 V‑5.25 V), USB‑B connector, and optional high‑drive outputs. It supports bus‑powered, self‑powered and high‑current USB configurations, as well as remote wake‑up and power‑management features.
| Maximum data transfer rate (D2XX) | 1 MB/s |
|---|---|
| Maximum data transfer rate (VCP) | 300 kB/s |
| Supply voltage range | 3.3 V to 5.25 V |
| Operating temperature range | -40 °C to +85 °C |
| USB speed | USB 2.0 Full Speed (12 Mb/s) |
| Internal EEPROM size | 1024 bits |
| Package / socket | 24‑pin DIP, 15 mm wide |
| Maximum bus power current (bus‑powered) | 100 mA |
The module can transfer up to 1 MB/s using the D2XX drivers and up to 300 kB/s with the VCP drivers.
Remove the J2 jumper that connects the USB bus power and supply an external 3.3 V to 5.25 V to the VCC pins (15 and 21).