DS_FT231X Datasheet, PDF (7/44 Pages) List of Unclassifed Manufacturers – Future Technology Devices International Ltd FT231X

FT231X USB TO FULL HANDSHAKE UART IC
Datasheet
Version 1.2
Document No.: FT_000565 Clearance No.: FTDI# 261
3 Device Pin Out and Signal Description
3.1 20-LD QFN Package
10 _3V3OUT
9
8
USBDM
USBDP
11 _RESET#
TXD
RXD
RTS#
CTS#
DTR#
DSR#
DCD#
RI#
17
1
19
6
18
4
5
2
CBUS0
CBUS1
CBUS2
CBUS3
15
14
7
16
Figure 3.1 QFN Schematic Symbol
3.1.1 QFN Package PinOut Description
Note: # denotes an active low signal.
Pin No.
12
20
Name
**
VCC
VCCIO
**
10
3V3OUT
3, 13
GND
Table 3.1 Power and Ground
Type
Description
POWER
Input
5 V or 3V3 supply to IC
POWER
Input
POWER
Output
1V8 – 3V3 supply for the IO cells
3V3 output at 50mA. May be used to power VCCIO.
When VCC is 3V3; pin 10 is an input pin and should be
connected to pin 12.
POWER
Input
0V Ground input.
*Pin 21 on the symbol is the pad under the centre of the chip package and should be connected to GND
** If VCC is 3V3 then 3V3OUT must also be driven with 3V3 input
Copyright © 2013 Future Technology Devices International Limited
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