UMFT240XE-01 FTDI, UMFT240XE-01 Datasheet - Page 8
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UMFT240XE-01
Manufacturer Part Number
UMFT240XE-01
Description
Interface Development Tools USB to 8-Bit 245 FIFO Module
Manufacturer
FTDI
Type
USB to FIFOr
Series
FT240Xr
Datasheet
1.UMFT240XE-01.pdf
(18 pages)
Specifications of UMFT240XE-01
Rohs
yes
Product
Development Modules
Tool Is For Evaluation Of
FT240XQ
Interface Type
I2C, FIFO, USB
Operating Supply Voltage
3.3 V
Description/function
USB to 8bit 245 FIFO evaluation module
Dimensions
29.02 mm x 19.24 mm x 9.2 mm
Operating Supply Current
1 A
Factory Pack Quantity
25
For Use With
FT240XQ
5.2
Figure 5.1 – Bus Powered Configuration
A bus powered configuration draws its power from the USB host/hub. The UMFT240XE is configured by
default to be in bus powered mode.
Figure 5.1illustrates the UMFT240XE module in a typical USB bus powered design configuration. By
default 3V3OUT is connected to VCCIO, and VBUS is connected to VCC.
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 UMFT240XE 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).
BUS Powered Configuration
Current Flow
Jumper JP1 - Closed
3V3 TTL Mode
GND
Self-Sourced
Alternative
connection
3V3OUT
VCCIO
Copyright © 2012 Future Technology Devices International Limited
Document Reference No.: FT_000653
VBUS
VCC
connection
Alternative
Jumper JP2 - Closed
Bus Powered
Mode
GND
Clearance No.: FTDI#
8
UMFT240XE
Version 1.0
295