FT232R datasheet(27/40 Pages) FTDI

Part #	FT232R

Description	Single chip USB to asynchronous serial data transfer interface

PDF	40 Pages

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Manufacturer	FTDI [Future Technology Devices International Ltd.]

Direct Link	http://www.ftdichip.com

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FT232R USB UART IC Datasheet

Version 2.16

Document No.: FT_000053 Clearance No.: FTDI# 38

7.4 USB to MCU UART Interface

FT232R

GND

100nF

VCC

USBDM

USBDP

VCCIO

RESET#

OSCI

OSCO

3V3OUT

TXD

RXD

RTS#

CTS#

DTR#

DSR#

DCD#

RI#

CBUS0

CBUS1

CBUS2

CBUS3

CBUS4

GND

SHIELD

GND

100nF

4.7uF +

10nF +

Ferrite Bead

Vcc

PWREN#

Vcc

12MHz

OUT

10K

CLK_IN

I/O

RTS#

RXD

TXD

CTS#

Vcc

Figure 7.4 USB to MCU UART Interface

An example of using the FT232R as a USB to Microcontroller (MCU) UART interface is shown in Figure

7.4. In this application the FT232R uses TXD and RXD for transmission and reception of data, and RTS# /

CTS# signals for hardware handshaking. Also in this example CBUS0 has been configured as a 12MHz

output to clock the MCU.

Optionally, RI# could be connected to another I/O pin on the MCU and used to wake up the USB host

controller from suspend mode. If the MCU is handling power management functions, then a CBUS pin can

be configured as PWREN# and would also be connected to an I/O pin of the MCU.

FT232R Datasheet(PDF) 27 Page - Future Technology Devices International Ltd.

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