FT232RL FTDI, FT232RL Datasheet - Page 27
FT232RL
Manufacturer Part Number
FT232RL
Description
IC, USB UART INTERFACE, SSOP-28
Manufacturer
FTDI
Datasheet
1.FT232RL.pdf
(29 pages)
Specifications of FT232RL
Usb Version
1.1, 2.0
Supply Voltage Range
1.8V To 5.25V, 3.3V To 5.25V
Operating Temperature Range
-40°C To +85°C
Digital Ic Case Style
SSOP
No. Of Pins
28
Termination Type
SMD
Bandwidth
48MHz
Filter Terminals
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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9. LED Interface
Any of the 5 CBUS I/O pins can be configured to drive an LED. The FT232R has 3 options for driving an LED - these
are TXLED#, RXLED#, and TX&RXLED#.
Figure 19 -Dual LED Configuration
Figure 19 illustrates the configuration where one pin is used to indicate transmission of data (TXLED#) and another
is used to indicate receiving data (RXLED#). When data is being transmitted or received the respective pins will drive
from tri-state to low in order to provide indication on the LEDs of data transfer. A digital one-shot time is used so that
even a small percentage of data transfer is visible to the end user.
Figure 20 -Single LED Configuration
In figure 20 the TX&RXLED CBUS option is used. This option will cause the pin to drive a single LED when data is
being transmitted or received by the device.
FT232R USB UART I.C. Datasheet Version 1.04
FT232R
CBUS[0...4]
CBUS[0...4]
FT232R
CBUS[0...4]
TXLED#
RXLED#
TX&RXLED#
TX
LED
VCCIO
VCCIO
270R
270R
© Future Technology Devices International Ltd. 2005
270R
RX