DS_FT312D USB ANDROID HOST IC Datasheet
Version 1.1
Document No.: FT_000816 Clearance No.: FTDI# 331
3 Device Pin Out and Signal Description
3.1 Package Symbol
17
8
7
6
5
4
3
2
1
TEST1
USBDP
18
19
20
21
22
23
24
USBDM
GND
NC
VREGOUT
GND
XTOUT
XTIN
FT312D
QFN 32
NC
VCCIO
AVCC
VCC
GND
TXD
RXD
Figure 3.1QFN Schematic Symbol
NOTE: The pinout is the same for the QFN and LQFP packages.
NOTE: Pin 33 on the symbol is the copper pad in the centre of the QFN package
3.1.1 Package PinOut Description
Note: # denotes an active low signal.
Pin No.
Name
Type
Description
POWER
Input
2
VCC
3V3 supply to IC internal 1V8 regulator
POWER
Input
3
AVCC
1V8 supply to IC core
POWER
Input
13, 22, 28
VCCIO
VREGOUT
GND
3V3 supply for the IO cells
POWER
Output
7
1V8 output. May be used as input source for pin 3.
0V Ground input.
POWER
Input
1,6,14,15,16,19,27
Table 3.1 Power and Ground
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