TTL-232R
TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.02
Clearance No.: FTDI# 53
Document Reference No.: FT_000054
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Description
The
TTL-232R
cables are a family of USB to TTL serial UART converter cables incorporating FTDI‟s
FT232RQ USB to Serial UART interface IC device which handles all the USB signalling and protocols. The
cables provide a fast, simple way to connect devices with a TTL level serial interface to USB.
Each TTL-232R cable contains a small internal electronic circuit board, utilising the FT232R, which is
encapsulated into the USB connector end of the cable. The FT232R datasheet,
is available at
The other end of the cable comes with a selection of different connectors
supporting various applications – see Table 1.1
Cables are FCC, CE, RoHS compliant and are available at TTL levels of +5V and +3.3V.
Cables are available with either a 6-way SIL,0.1” pitch connector, a 3.5mm Audio Jack, an 8 way, keyed
2mm pitch connector (intended for use with VMUSIC2 or VDRIVE2) or bare, tinned wire ended
connections (see Table 1.1)
The USB side of the cable is USB powered and USB 2.0 full speed compatible. Each cable is 1.8m long
and supports a data transfer rate up to 3 Mbaud. Each cable supports the FTDIChip-ID™, with a unique
USB serial number programmed into the FT232R. This feature can be used to create a security or
password protected file transfer access using the cable. Further information and examples on this feature
are available at
under
The TTL-232R cables require USB drivers, available free from
which are
used to make the FT232R in the cable appear as a virtual COM port (VCP). This then allows the user to
communicate with the USB interface via a standard PC serial emulation port (for example TTY). Another
FTDI USB driver, the D2XX driver, can also be used with application software to directly access the
FT232R on the cable though a DLL. This is illustrated in the Figure 1.1
Various Connector
Options
TTY
TTL-232R
USB
Wire Ended
3mm Audio Jack
6 way, 0.1" Single In Line connector
8 way, Keyed,2mm, Single In Line
connector
VCP
Virtual COM Port
Various Connector
Options
Wire Ended
TTY
D2XX
3mm Audio Jack
USB
6 way, 0.1" Single In Line connector
8 way, Keyed,2mm, Single In Line
connector
Software application access to USB via D2XX
Figure 1.1 Using the TTL-232R Cable
DLL
Copyright © 2010 Future Technology Devices International Limited
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FTDI [ FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD. ]
