FT232H datasheet(53/65 Pages) FTDI

Part #	FT232H

Description	FT232H Single Channel Hi-Speed USB to Multipurpose UART/FIFO IC

PDF	65 Pages

Scroll/Zoom	100%

Manufacturer	FTDI [Future Technology Devices International Ltd.]

Direct Link	http://www.ftdichip.com

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53 / 65 page

Document No.: FT_000288

FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC

Datasheet Version 1.81

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.

FT232H Datasheet(PDF) 53 Page - Future Technology Devices International Ltd.