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FT221XS-R 数据表(PDF) 7 Page - Future Technology Devices International Ltd.

部件名 FT221XS-R
功能描述  Future Technology Devices International Ltd.
PDF  45 Pages
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制造商  FTDI [Future Technology Devices International Ltd.]
网页  http://www.ftdichip.com
标志 FTDI - Future Technology Devices International Ltd.

FT221XS-R 数据表(HTML) 7 Page - Future Technology Devices International Ltd.

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Copyright © 2013 Future Technology Devices International Limited
7
FT221X USB 8-BIT SPI/FT1248 IC Datasheet
Version 1.3
Document No.: FT_000630 Clearance No.: FTDI# 263
3 Device Pin Out and Signal Description
3.1 20-LD QFN Package
MIOSI7
2
MIOSI4
18
MIOSI5
4
MIOSI2
19
MIOSI3
6
MISO
7
USBDP
8
USBDM
9
3V3OUT
10
RESET#
11
CS#
14
CLK
15
MIOSI0
17
MIOSI6
5
MIOSI1
1
CBUS3
16
Figure 3.1 QFN Schematic Symbol
3.1.1 QFN Package PinOut Description
Note : # denotes an active low signal.
Pin No.
Name
Type
Description
12
**
VCC
POWER
Input
5 V (or 3V3) supply to IC
20
VCCIO
POWER
Input
1V8 - 3V3 supply for the IO cells
10
**
3V3OUT
POWER
Output
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
3, 13
GND
POWER
Input
0V Ground input.
Table 3.1 Power and Ground
*Pin 21 is the centre pad under the IC. Connect to GND.
** If VCC is 3V3 then 3V3OUT must also be driven with 3V3 input



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