FT232RL R FTDI, Future Technology Devices International Ltd, FT232RL R Datasheet - Page 30

• Manufacturer Part Number: FT232RL R
• Description: IC USB TO SERIAL UART 28-SSOP
• Manufacturer: FTDI, Future Technology Devices International Ltd
• Series: USBmadeEZ-UARTr

Specifications of FT232RL R

• Features: USB to UART
• Number Of Channels: 1, UART
• Fifo's: 256 Byte
• Protocol: RS-232, RS-422, RS-485
• Voltage - Supply: 3.3 V ~ 5.25 V
• With Auto Flow Control: Yes
• With Modem Control: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• For Use With: 768-1023 - MOD USB RS232 DEV/EVAL FT232RL768-1022 - MODULE USB - SERIAL MODULE MINI768-1021 - MODULE MINI DEVELOPMENT FT232RQ768-1019 - MODULE USB-SER UART FT232 24-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 768-1007-2; FT232RL R

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