Document No.: FT_000053
FT232R USB UART IC Datasheet Version 2.07
Clearance No.: FTDI# 38
3.3 QFN-32 Package
32
25
1
24
1
30
2
VCCIO
VCC
TXD
RXD
19
FTDI
YYXX-A
15
14
USBDM
32
8
RTS#
CTS#
DTR#
USBDP
NC
XXXXXXX
5
8
17
12
31
6
NC
FT232RQ
FT232RQ
13
25
29
NC
9
16
DSR#
DCD#
RI#
NC
7
NC
3
18
23
25 26 27 28 29 30 31 32
RESET#
NC
22
21
10
CBUS0
CBUS1
CBUS2
27
28
16
24
1
2
3
4
5
6
7
8
VCCIO
RXD
RI#
AGND
OSCI
NC 23
22
OSCO
CBUS0
3V3OUT
21
CBUS1
GND
A
G
N
D
T
E
S
T
GND 20
NC
G
N
D
G
N
D
G
N
D
11
9
CBUS3
CBUS4
19
DSR#
DCD#
CTS#
VCC
18
RESET#
17
GND
24
4
17
20
26
16 15 14 13 12 11 10
9
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.
14
15
USBDP
USBDM
I/O
I/O
USB Data Signal Minus, incorporating internal series resistor.
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.
1
VCCIO
GND
PWR
PWR
4, 17, 20
Device ground supply pins.
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10
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