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FT232H Datasheet(PDF) 53 Page - List of Unclassifed Manufacturers

Part # FT232H
Description  Future Technology Devices International Ltd
PDF  66 Pages
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Manufacturer  ETC2 [List of Unclassifed Manufacturers]
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FT232H Datasheet(HTML) 53 Page - List of Unclassifed Manufacturers

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Copyright © 2012 Future Technology Devices International Limited
53
Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.8
Clearance No.: FTDI #199
6.2.1 Self Powered application example 2
Self powered configuration running on 3.3V
Figure 6.3 Self Powered Configuration Example 2
Figure 6.3 illustrates the FT232H in a typical USB self powered configuration similar to Figure 6.2. The
difference here is that the VREGIN is connected to the external 3V3 LDO regulator output which supplies
3.3V to the VCCIOs, VCCD, VPLL and VPHY. Please note that when the FT232H running on +3V3
(VREGIN), the VCCD becomes an input. In this application the VREGIN is the +3V3 input to the on
chip+3.3V/1.8V regulator. The output of the on chip LDO regulator (+1.8V) drives pin 38, VCORE and pin
37, VCCA.
Note that in this set-up, the EEPROM should be configured for self-powered operation and the option
“suspend on ACBUS7 low” selected in FT_Prog . Self-power mode requires ACBUS7 which prevents the
use of MPSSE mode.



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