UMFT240XA-01 FTDI, UMFT240XA-01 Datasheet - Page 8

• Manufacturer Part Number: UMFT240XA-01
• Description: Interface Development Tools USB to Parallel FIFO Dev Mod for FT240X
• Manufacturer: FTDI
• Type: USB to FIFOr

Specifications of UMFT240XA-01

• Rohs: yes
• Product: Development Modules
• Tool Is For Evaluation Of: FT240XQ
• Interface Type: USB
• Operating Supply Voltage: 3.3 V
• Dimensions: 37 mm x 12.2 mm x 2.2 mm
• Tradename: X-Chip

UMFT240XA
Version 1.1
271
Document Reference No.: FT_000520
Clearance No.: FTDI#
BUS Powered Configuration
5.3
GND
Alternative
Alternative
connection
connection
VCCIO
VCC
Current Flow
3V3OUT
VBUS
GND
Viewing pins thourgh the board
Bus Powered
Self-Sourced
from the top.
3V3 TTL Mode
Mode
Solder Link JP2 - Closed
Solder Link JP1 - Closed
Figure 5.1 – Bus Powered Configuration
A bus powered configuration draws its power from the USB host/hub. The UMFT240XA is configured by
default to be in bus powered mode.
Figure 5.1illustrates the UMFT240XA 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 FT240X power input (VCC)
+3.3V power is sourced from the FT240X‟s voltage regulator output and is connected to the FT240X IO
port‟s power input (VCCIO).
Interfacing the UMFT240XA 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 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).
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