UMFT201XA-01 FTDI, UMFT201XA-01 Datasheet - Page 8

• Manufacturer Part Number: UMFT201XA-01
• Description: Interface Development Tools USB to I2C Dev Module for FT201X
• Manufacturer: FTDI
• Type: USB to I2Cr

Specifications of UMFT201XA-01

• Rohs: yes
• Product: Development Modules
• Tool Is For Evaluation Of: FT201XQ
• Interface Type: I2C, USB
• Operating Supply Voltage: 3.3 V
• Dimensions: 30.2 mm x 12.2 mm
• Tradename: X-Chip

5.3
Figure 5.1 – Bus Powered Configuration
A bus powered configuration draws its power from the USB host/hub. The UMFT201XA is configured by
default to be in bus powered mode.
Figure 5.1 illustrates the UMFT201XA module in a typical USB bus powered design configuration. By
default, solder bridge connections link VCCIO to 3V3OUT, and VCC to VBUS. (Note that Figure 5.1 is for
illustration only and that the pins do not actually go all the way through the PCB)
For a bus power configuration power is supplied from the USB VBUS:
+5V VBUS power is sourced from the USB bus and is connected to the FT201X power input (VCC)
+3.3V power is sourced from the FT201X‟s voltage regulator output and is connected to the FT201X IO
port‟s power input (VCCIO).
Interfacing the UMFT201XA module to a microcontroller (MCU), or other logic devices for bus powered
configuration is done in exactly the same way as a self-powered configuration (see Section 5.3), except
that it is possible for the MCU or external device to take its power supply from the USB bus (either the 5V
from the USB pin, or 3.3V from the 3V3OUT pin).
BUS Powered Configuration
Solder Link JP1 - Closed
Current Flow
3V3 TTL Mode
Self-Sourced
GND
connection
Alternative
Viewing pins thourgh the board
3V3OUT
VCCIO
Copyright © 2012 Future Technology Devices International Limited
from the top.
Document Reference No.: FT_000516
VBUS
VCC
Solder Link JP2 - Closed
Alternative
connection
Bus Powered
Mode
GND
UMFT201XA Datasheet
Clearance No.: FTDI#
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Version 1.1
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