FT232HL-REEL Datasheet, PDF (15/66 Pages) Future Technology Devices International Ltd. – Single Channel Hi-Speed USB to Multipurpose UART/FIFO IC

Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.82
Clearance No.: FTDI #199
3.5 Pin Configurations
The following section describes the function of the pins when the device is configured in different modes
of operation.
3.5.1 FT232H pins used in an UART interface
The FT232H can be configured as a UART interface. When configured in this mode, the pins used and the
descriptions of the signals are shown in Table 3.6
Pin No.
Name
Type
UART Configuration Description
13
TXD
OUTPUT TXD = transmitter output
14
RXD
INPUT RXD = receiver input
15
RTS#
OUTPUT RTS# = Ready To send handshake output
16
CTS#
INPUT CTS# = Clear To Send handshake input
17
DTR#
OUTPUT DTR# = Data Transmit Ready modem signalling line
18
DSR#
INPUT DSR# = Data Set Ready modem signalling line
19
DCD#
INPUT DCD# = Data Carrier Detect modem signalling line
RI# = Ring Indicator Control Input. When the Remote Wake up
20
RI#
INPUT option is enabled in the EEPROM, taking RI# low can be used to
resume the PC USB Host controller from suspend.
**
21
OUTPUT TXDEN = (TTL level). Use to enable RS485 level converter
TXDEN
RXLED = Receive signalling output. Pulses low when receiving data
27
**
OUTPUT ^{(RXD) from the external device (UART Interface). This should be}
RXLED
connected to an LED.
28
**
TXLED = Transmit signalling output. Pulses low when transmitting
OUTPUT ^{data (TXD) to the external device (UART Interface). This should be}
TXLED
connected to an LED.
Table 3.6 UART Configured Pin Descriptions
** ACBUS I/O pins
For a functional description of this mode, please refer to section 4.3
NOTE: UART is the device default mode.
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