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FT122 Datasheet(PDF) 32 Page - Future Technology Devices International Ltd.

Part # FT122
Description  FT122 ENHANCED USB DEVICE CONTROLLER WITH PARALLEL BUS IC Datasheet Version 1.1
PDF  47 Pages
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Manufacturer  FTDI [Future Technology Devices International Ltd.]
Direct Link  http://www.ftdichip.com
Logo FTDI - Future Technology Devices International Ltd.

FT122 Datasheet(HTML) 32 Page - Future Technology Devices International Ltd.

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Copyright © 2014 Future Technology Devices International Limited
32
Document No.: FT_000647
FT122 ENHANCED USB DEVICE CONTROLLER WITH PARALLEL
BUS
IC Datasheet Version 1.1
Clearance No.: FTDI#
313
7 Application Information
Figure 7-1 shows a reference application circuit for a USB bus-powered application. Figure 7-2 shows a
reference application circuit for a USB self-powered application.
FT122
1
2
3
4
5
SHIELD
Ferrite
Bead
VCC
VOUT3V3
DM
DP
VCCIO
VCC
RESET_n
100nF
10nF
27R
27R
80C51
VCC
VCC
SUSPEND
CLKOUT
RD_n
WR_n
D[7:0]
A0
INT_n
DMACK_n
EOT_n
P3.3
XTAL1
RD#/P3.7
WR#/P3.6
P0.7-P0.0
P3.4
INT#/P3.2
100nF
VCC3V3
47pF
100nF
4.7uF
+
VCC
10k
10k
Figure 7-1 FT122 bus-powered application
FT122
VCC
VOUT3V3
DM
DP
VCCIO
RESET_n
100nF
27R
27R
80C51
VCC
VCC
SUSPEND
CLKOUT
RD_n
WR_n
D[7:0]
A0
INT_n
DMACK_n
EOT_n
P3.3
XTAL1
RD#/P3.7
WR#/P3.6
P0.7-P0.0
P3.4
INT#/P3.2
100nF
VCC3V3
1
2
3
4
5
SHIELD
470k
1M
47pF
47pF
VCC3V3
1M
1M
100nF
4.7uF
+
VCC
VCC
10k
10k
Figure 7-2 FT122 self-powered application



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