USB245 ETC, USB245 Datasheet - Page 5

• Manufacturer Part Number: USB245
• Description: Pinout Information
• Manufacturer: ETC

asks for the drivers, put the floppy disk sent with the USB245 into the computer’s floppy drive and
tell the setup routine which drive you placed it into (usually A:).
clicking on: Start
Manager
COM port assigned.
the USB245 end, while the other end is plugged into a PC or USB master..
the 5V supply from pin 24, and the GND from pin 12 for you microcontroller. Do NOT tie another
5V source to the USB 5V source. RESET# is also available if needed.
software. The PC may ‘freeze’ for about 25 seconds while the software is loaded. The chipset &
driver manufacturer explains that this is normal.
be able to open a COM program like PCPlus, choose the correct COM Port, and start typing in
the data entry area and see you characters show up on the screen. If they show up twice, go to
half-duplex mode.
A very simple Basic program
USB
LOW
HIGH 9
10 IF IN10 = 0 THEN
GOTO 10
Wire the 8 data lines and 4 status lines to your preprogrammed microcontroller. You can use
Plug the USB cable back into the PC. The PC should now search for and find the proper driver
If the example program listed above was downloaded to your embedded processor, you should
Now that it has been found, unplug the USB cable from the PC. Never unplug the cable from
After it has completed setup, you can find the COM port the USB245 has been assigned, by
END
8
VAR
LOW 9
USB=INL
HIGH 9
DIRL=%11111111
HIGH 8
OUTL=USB
LOW 8
DIRL=%00000000
Ports (COM &LPT). Here you should see: USB Serial Port (COMn), where n is the
BYTE
Settings
Control Panel, then double click the System Icon
REM A Place to store the character
REM I/O 0-7 used for DATA
REM I/O 8
REM I/O 9
REM I/O 10 used for RXF# input
REM TXE IS NOT CHECKED
REM IF RXF is LOW, there is a char available
REM make the READ line active LOW
REM read the character
REM deactivate the
REM set PORT for OUTPUT
REM strobe the WRITE line HIGH
REM output the character
REM bring the strobe back LOW LOW
REM set PORT for INPUT
used for WRITE SIGNAL, Start LOW
used for READ SIGNAL, Start HIGH
READ line
Device