FT232HL datasheet(13/65 Pages) FTDI

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Document No.: FT_000288

FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC

Datasheet Version 1.3

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

TXD

OUTPUT

TXD = transmitter output

RXD

INPUT

RXD = receiver input

RTS#

OUTPUT

RTS# = Ready To send handshake output

CTS#

INPUT

CTS# = Clear To Send handshake input

DTR#

OUTPUT

DTR# = Data Transmit Ready modem signalling line

DSR#

INPUT

DSR# = Data Set Ready modem signalling line

DCD#

INPUT

DCD# = Data Carrier Detect modem signalling line

RI#

INPUT

RI# = Ring Indicator Control Input. When the Remote Wake up

option is enabled in the EEPROM, taking RI# low can be used to

resume the PC USB Host controller from suspend.

TXDEN

OUTPUT

TXDEN = (TTL level). Use to enable RS485 level converter

RXLED

OUTPUT

RXLED = Receive signalling output. Pulses low when receiving data

(RXD) from the external device (UART Interface). This should be

connected to an LED.

TXLED

OUTPUT

TXLED = Transmit signalling output. Pulses low when transmitting

data (TXD) to the external device (UART Interface). This should be

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.

FT232HL Datasheet(PDF) 13 Page - Future Technology Devices International Ltd.

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