FT232RQ FTDI, FT232RQ Datasheet - Page 27

• Manufacturer Part Number: FT232RQ
• Description: IC, USB UART INTERFACE, QFN-32
• Manufacturer: FTDI

Specifications of FT232RQ

• 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: QFN
• No. Of Pins: 32
• Termination Type: SMD
• Bandwidth: 48MHz
• Ic Generic Number: 232
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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