FT232RL R FTDI, Future Technology Devices International Ltd, FT232RL R Datasheet - Page 7

• 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

3
3.1 28-LD SSOP Package
Figure 3.1 SSOP Package Pin Out and Schematic Symbol
3.2 SSOP Package Pin Out Description
Note: The convention used throughout this document for active low signals is the signal name followed by
a #
Table 3.1 USB Interface Group
Pin No.
Pin No.
CBUS4
CBUS2
CBUS3
VCCIO
7, 18,
DCD#
DSR#
DTR#
RTS#
CTS#
GND
RXD
TXD
15
16
21
RI#
NC
4
Device Pin Out and Signal Description
USBDM
USBDP
VCCIO
Name
Name
GND
1
14
Copyright © 2010 Future Technology Devices International Limited
Type
Type
PWR
PWR
I/O
I/O
USB Data Signal Plus, incorporating internal series resistor and 1.5kΩ pull up
resistor to 3.3V.
USB Data Signal Minus, incorporating internal series resistor.
+1.8V to +5.25V supply to the UART Interface and CBUS group pins (1...3, 5, 6,
9...14, 22, 23). In USB bus powered designs connect this pin to 3V3OUT pin to
drive out at +3.3V levels, or connect to VCC to drive out at 5V CMOS level. This
pin can also be supplied with an external +1.8V to +2.8V supply in order to drive
outputs at lower levels. It should be noted that in this case this supply should
originate from the same source as the supply to VCC. This means that in bus
powered designs a regulator which is supplied by the +5V on the USB bus should
be used.
Device ground supply pins
28
15
NC
OSCI
TEST
GND
VCC
GND
OSCO
AGND
CBUS0
CBUS1
USBDM
USBDP
RESET#
3V3OUT
FT232R USB UART IC Datasheet Version 2.07
Description
Description
20
16
15
19
24
27
28
17
4
8
VCC
USBDM
USBDP
VCCIO
NC
RESET#
NC
OSCI
OSCO
3V3OUT
25
A
G
N
D
Document No.: FT_000053
FT232RL
7
Clearance No.: FTDI# 38
G
N
D
18
G
N
D
21
G
N
D
26
T
E
S
T
CBUS0
CBUS1
CBUS2
CBUS3
CBUS4
DCD#
DTR#
DSR#
RTS#
CTS#
RXD
TXD
RI#
1
5
3
11
2
9
10
6
23
22
13
14
12
7