UMFT240XA-01 FTDI, UMFT240XA-01 Datasheet - Page 12

• 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

5.7
Figure 5.5 – USB Self Powered 3.3V Logic Drive
The FT240X can be powered from a single 3.3V supply. This feature is an alternative to having the
FT240X powered at 5V in standard self-powered configuration.
The 3.3V Self Powered configuration is illustrated in Figure 5.5. Note that the 3.3V input is connected to
VCC, VCCIO and 3V3OUT. (Note that Figure 5.5 is for illustration only and that the pins do not actually go
all the way through the PCB)
5.8
The FT240X contains an embedded MTP ROM. This device can be used to specify the functions used by
each CBUS pin, the current drive on each signal pin, current limit for the USB bus and the other
descriptors of the device. For details on using the MTP ROM/EEPROM programming utility FT_PROG,
please see the FT_PROG User Guide
When programming the MTP ROM please note:
ii) The Max Bus Power setting of the MTP ROM should specify the maximum current to be drawn from
i) One of the CBUS Pins can be configured as PWREN# in the internal MTP ROM. This can be used to
switch the power supply to the external circuitry.
the USB host/hub when enumerated. For high-powered USB devices the current limit when
enumerated is between 100mA and 500mA, for low-powered USB devices the current limit is
100mA.
3.3V Voltage Supply
Configuring the MTP ROM
Vcc = 3.3V
MCU
and the FT240X datasheet.
Copyright © 2012 Future Technology Devices International Limited
DATA0-7
RXF#
TXE#
WR#
RD#
Solder Links JP1 -
GND
Closed
Document Reference No.: FT_000520
Vcc = 3.3V
Viewing pins thourgh the board
3V3OUT
VCCIO
from the top.
Optional
IO7
VBUS
VCC
Clearance No.: FTDI#
Solder Links JP2 - Open
12
UMFT240XA
Version 1.1
GND
271