Document No.: FT_000053
FT232R USB UART IC Datasheet Version 2.07
Clearance No.: FTDI# 38
3.3 QFN-32 Package
32
25
1
YYXX-A
XXXXXXX
8
9
FTDI
16
24
1
19
15
14
5
VCCIO
VCC
TXD
RXD
30
2
32
8
31
6
7
3
22
21
10
11
9
USBDM
RTS#
USBDP
NC
NC
NC
NC
NC
RESET#
NC
OSCI
OSCO
3V3OUT
A
G
N
D
24
4
G
N
D
17
G
N
D
20
G
N
D
26
T
E
S
T
CBUS2
CBUS3
CBUS4
CBUS0
CBUS1
DSR#
DCD#
RI#
CTS#
FT232RQ
OSCO
DTR#
RTS#
TEST
26
17
12
13
25
29
FT232RQ
DTR#
OSCI
TXD
NC
NC
25
27
28
29
30
31
32
18
23
AGND
24
1
2
3
4
5
6
7
8
VCCIO
RXD
RI#
GND
NC
DSR#
DCD#
CTS#
27
28
16
NC
23
CBUS0
22
CBUS1
21
GND
VCC
20
19
RESET#
18
GND
17
16
15
14
13
12
11
10
9
CBUS3
CBUS4
Figure 3.2 QFN-32 Package Pin Out and schematic symbol
3.4 QFN-32 Package Signal Description
Pin No.
Name
Type
Description
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.
3V3OUT
USBDM
USBDP
NC
NC
CBUS2
14
15
USBDP
USBDM
I/O
I/O
Table 3.5 USB Interface Group
Pin No.
Name
Type
Description
+1.8V to +5.25V supply for the UART Interface and CBUS group pins (2, 3,
6,7,8,9,10 11, 21, 22, 30,31,32). In USB bus powered designs connect this pin to
3V3OUT 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 out 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.
1
VCCIO
PWR
4, 17, 20
GND
PWR
Copyright © 2010 Future Technology Devices International Limited
10
FTDI [ FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD. ]
