FT232RL-2000 FTDI [Future Technology Devices International Ltd.], FT232RL-2000 Datasheet - Page 30

• Manufacturer Part Number: FT232RL-2000
• Description: USB UART IC - Single chip USB to asynchronous serial data transfer interface
• Manufacturer: FTDI [Future Technology Devices International Ltd.]

7.4 USB to MCU UART Interface
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.
SHIELD
5
1
2
3
4
10nF
100nF
GND
Copyright © 2010 Future Technology Devices International Limited
+
Ferrite Bead
4.7uF +
GND
Vcc
Vcc
100nF
GND
OSCI
USBDM
USBDP
VCCIO
RESET#
NC
OSCO
3V3OUT
VCC
NC
G
N
D
A
FT232R USB UART IC Datasheet Version 2.07
G
N
D
FT232R
G
N
D
GND
G
N
D
T
E
S
T
CBUS0
CBUS1
CBUS2
CBUS3
CBUS4
DTR#
DSR#
DCD#
RTS#
CTS#
TXD
RXD
RI#
12MHz
OUT
PWREN#
Document No.: FT_000053
10K
Clearance No.: FTDI# 38
Vcc
RTS#
CLK_IN
TXD
CTS#
RXD
I/O
Vcc
30