UMFT221XE Datasheet
Version 1.2
Document Reference No.: FT_000651
Clearance No.: FTDI# 293
Future Technology
Devices International
Datasheet
UMFT221XE USB to 8-bit
SPI/FT1248 Development
Module
UMFT221XE is a USB to 8-bit SPI/FT1248 DIP module with a 0.6” row pitch.
1
Introduction
The UMFT221XE is a development module for
FTDI’s FT221XQ, one of the devices from FTDI’s
range of USB to serial data interface integrated
circuit devices. FT221X is a USB to SPI/FT1248
interface with a battery charger detection feature,
which can allow batteries to be charged with a
higher current from a dedicated charger port
(without the FT221X being enumerated). In
addition, asynchronous and synchronous bit bang
interface modes are available. The internally
generated clock (6MHz, 12MHz and 24MHz) can
be brought out on the CBUS pin to be used to
drive a microprocessor or external logic.
The UMFT221XE is a module which is designed to
plug into a standard 0.6” wide 20 pin DIP socket.
All components used, including the FT221XQ are
Pb-free (RoHS compliant).
1.1 Features
The UMFT221XE is fitted with a FT221XQ; all the
features of the FT221X can be utilized with the
UMFT221XE. For a full list of the FT221X’s
features please see the FT221X datasheet which
can be found by clicking here.
In addition to the features listed in the FT221X
datasheet, the UMFT221XE has the following
features:
Small PCB assembly module designed to fit a
standard 15.24mm (0.6”) wide 20 pin DIP
socket. Pins are on a 2.54mm (0.1”) pitch.
On board USB ‘mini-B’ socket allows module
to be connected to a PC via a standard A to
mini-B USB cable.
Functionally configurable using jumpers. The
default jumper setup enables the module to
function
without
peripheral
wires
or
application board.
Other configurations
enable external power supply options and
variation of logic reference levels.
Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced
in any material or electronic form without the prior written consent of the copyright holder. This product and its documentation are
supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Future Technology
Devices International Ltd will not accept any claim for damages howsoever arising as a result of use or failure of this produ ct. Your
statutory rights are not affected. This product or any variant of it is not intended for use in any medical appliance, device or system in
which the failure of the product might reasonably be expected to result in personal injury. This document provides preliminar y
information that may be subject to change without notice. No freedom to use patents or other intellectual property rights is implied by
the publication of this document. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park,
Glasgow G41 1HH United Kingdom. Scotland Registered Company Number: SC136640
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UMFT221XE Datasheet
Version 1.2
Document Reference No.: FT_000651
Clearance No.: FTDI# 293
Table of Contents
1
Introduction .................................................................... 1
1.1
Features .................................................................................... 1
2
Driver Support ................................................................ 3
3
Ordering Information ...................................................... 4
4
UMFT221XE Signals and Configurations .......................... 5
5
4.1
UMFT221XE Pin Out .................................................................. 5
4.2
Signal Descriptions ................................................................... 6
4.3
CBUS Signal Options ................................................................. 6
Module Configurations .................................................... 8
5.1
Jumper Configuration Options .................................................. 8
5.2
Bus Powered Configuration ....................................................... 8
5.3
Self Powered Configuration ...................................................... 9
5.4
USB Bus Powered with Power Switching Configuration .......... 10
5.5
Variable IO Voltage Supply ..................................................... 11
5.6
3.3V Voltage Supply ................................................................ 12
5.7
Configuring the MTP ROM ....................................................... 12
6
Module Dimensions ....................................................... 13
7
IC Package Markings ..................................................... 14
8
UMFT221XE Module Circuit Schematic........................... 15
9
Internal MTP ROM Configuration ................................... 16
10 Contact Information ...................................................... 17
Appendix A - References .................................................... 17
Document References ..................................................................... 17
Acronyms and Abbreviations ........................................................... 17
Appendix B - List of Figures and Tables ............................. 18
List of Figures ................................................................................. 18
List of Tables ................................................................................... 18
Appendix C – Revision History ........................................... 19
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Driver Support
Royalty-Free VIRTUAL COM PORT (VCP)
DRIVERS for:
Royalty-Free D2XX Direct Drivers (USB Drivers
+ DLL S/W Interface):
Windows 10 32, 64-bit
Windows 10 32, 64-bit
Windows 8 / 8.1 32, 64-bit
Windows 8 / 8.1 32, 64-bit
Windows 7 32,64-bit
Windows 7 32,64-bit
Windows Vista and Vista 64-bit
Windows Vista and Vista 64-bit
Windows XP and XP 64-bit
Windows XP and XP 64-bit
Windows XP Embedded
Windows XP Embedded
Server XP / 2003 /2008 / 2016
Server XP / 2003 /2008 / 2016
Windows CE 4.2-5.2, 6.0/7.0, 2013
Windows CE 4.2-5.2, 6.0/7.0, 2013
Mac OS-X
Mac OS-X
Linux 3.2 and greater
Linux 3.2 and greater
Android
Android
The drivers listed above are all available to download for free from www.ftdichip.com. Various 3rd Party
Drivers are also available for various other operating systems - visit www.ftdichip.com for details.
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Ordering Information
Module Code
Utilised IC
Code
TID
Description
UMFT201XE-01
FT201XQ
40001460
USB to I2C evaluation module. 0.6” row pitch, standard DIP
headers.
UMFT221XE-01
FT221XQ
40001462
USB to 8-bit SPI/FT1248 evaluation module. 0.6” row pitch,
standard DIP headers.
UMFT231XA-01
FT231XQ
40001464
USB to Full-Handshake UART evaluation module. 0.6” row
pitch, standard DIP headers.
UMFT240XA-01
FT240XQ
40001466
USB to 8-bit 245 FIFO evaluation module. 0.6” row pitch,
standard DIP headers.
TID is the test identification code for the IC. Note that this TID is for revision D silicon.
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UMFT221XE Signals and Configurations
4.1 UMFT221XE Pin Out
GND – J1-1
J2-1 – SLD
3V3OUT
VBUS
VCCIO
VCC
IO7
IO6
GND
IO5
RESET#
IO4
CBUS3
IO3
MISO
IO2
SS#
IO1
IO0 – J1-10
J2-10 – SCLK
Figure 4.1 – Module Pin Out
Figure 4.1 illustrates the signals available on the DIP pins.
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4.2 Signal Descriptions
Pin No.
Name
Type
Description
J1-1,
J2-5
GND
PWR
Module Ground Supply Pins
J1-2
3V3OU
T
Power
Input/
Output
J1-3
VCCIO
J1-4
J1-5
J1-6
J1-7
J1-8
J1-9
J1-10
J2-1
IO6
IO5
IO4
IO3
IO2
IO1
IO0
SLD
J2-2
VBUS
J2-3
VCC
J2-4
IO7
RESET
#
J2-6
Power
Input
I/O
I/O
I/O
I/O
I/O
I/O
I/O
GND
Power
Output
Power
Input
I/O
Input
3.3V output from integrated L.D.O. regulator. This pin is decoupled with a
100nF capacitor to ground on the PCB module. The prime purpose of this
pin is to provide the 3.3V supply that can be used internally. For power
supply configuration details see section 5.
+1.8V to +3.3V supply to the UART Interface and CBUS I/O pins. For power
supply configuration details see section 5.
FT1248 Bi-Directional data bit 6.
FT1248 Bi-Directional data bit 5.
FT1248 Bi-Directional data bit 4.
FT1248 Bi-Directional data bit 3.
FT1248 Bi-Directional data bit 2.
FT1248 Bi-Directional data bit 1.
FT1248 Bi-Directional data bit 0.
USB Cable Shield. Connected to GND via a 0 ohm resistor.
5V Power output from the USB bus. For a low power USB bus powered
design, up to 100mA can be sourced from the 5V supply and applied to the
USB bus. A maximum of 500mA can be sourced from the USB bus in a high
power USB bus powered design. Currents up to 1A can be sourced from a
dedicated charger and applied to the USB bus.
5V power input for FT221X. For power supply configuration details see
section 5.
FT1248 Bi-Directional data bit 7.
FT221X active low reset line. Configured with an on board pull-up and
recommended filter capacitor.
Configurable CBUS I/O Pin. Function of this pin is configured in the device
internal MTP ROM. See CBUS Signal Options, Table 4.2.
Master In Serial Out. Used to provide status information to the FT1248
interface master.
J2-7
CBUS3
I/O
J2-8
MISO
Output
J2-9
SS#
Input
FT1248 Chip select input to enable the device interface. Active low logic.
J2-10
SCLK
Input
FT1248 Clock input from FT1248 interface master
Table 4.1 – Module Pin Out Description
4.3 CBUS Signal Options
The following options can be configured on the CBUS I/O pins. These options are all configured in the
internal MTP ROM using the utility software FT_PROG, which can be downloaded from the
www.ftdichip.com. The default configuration is described in Section 9.
CBUS Signal
Option
Available On CBUS Pin
Tristate
DRIVE_1
DRIVE_0
CBUS3
CBUS3
CBUS3
PWREN#
CBUS3
Description
IO Pad is tri-stated
Output a constant 1
Output a constant 0
Output is low after the device has been configured by
USB, then high during USB suspend mode. This output
can be used to control power to external logic PChannel logic level MOSFET switch.
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CBUS Signal
Option
SLEEP#
CLK24MHz
CLK12MHz
CLK6MHz
GPIO
BCD_Charger
BCD_Charger#
BitBang_WR#
BitBang_RD#
VBUS Sense
Time Stamp
Keep_Awake#
Available On CBUS Pin
Clearance No.: FTDI# 293
Description
NOTE: This function is driven by an open-drain to
ground with no internal pull-up, this is specially
designed to aid battery charging applications.
UMFT221XE connects an on board 47K pull-up on all
CBUS and DBUS lines.
Goes low during USB suspend mode. Typically used to
power down an external logic. De-activate SLEEP#
option for when connected to a dedicated charger port,
CBUS3
this can be selected when configuring the MTP ROM.
When this option is enabled SLEEP# is driven high
when FT221X is connected to a Dedicated Charger Port.
CBUS3
24 MHz Clock output.**
CBUS3
12 MHz Clock output.**
CBUS3
6 MHz Clock output.**
CBUS bit bang mode option. Allows up to 4 of the CBUS
pins to be used as general purpose I/O. Configured
individually for CBUS0, CBUS1, CBUS2 and CBUS3 in
CBUS3
the internal MTP ROM. A separate application note,
AN232R-01, available from FTDI website
(www.ftdichip.com) describes in more detail how to use
CBUS bit bang mode.
Battery Charge Detect indicates when the device is
connected to a dedicated battery charger host. Active
CBUS3
high output. NOTE: Requires a 10K pull-down to
remove power up toggling.
Active low BCD Charger, driven by an open drain to
CBUS3
ground with no internal pull-up (4.7K on board pull-up
present).
Synchronous and asynchronous bit bang mode WR#
CBUS3
strobe output.
Synchronous and asynchronous bit bang mode RD#
CBUS3
strobe output.
CBUS3
Input to detect when VBUS is present.
Toggle signal which changes state each time a USB
CBUS3
SOF is received
Active Low input, prevents the chip from going into
CBUS3
suspend.
Table 4.2 – CBUS Signal Options
**When in USB suspend mode the outputs clocks are also suspended.
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Module Configurations
5.1 Jumper Configuration Options
Jumper No.
Setting
Status
Description
JP1
Shorted
Default
JP1
Opened
Jumper No.
Setting
Status
Description
JP2
Shorted
Default
Connects VBUS to VCC. This mode is known as “USB-Powered”
mode.
JP2
Opened
NonDefault
Connects internal 3.3V regulator to VCCIO. This restricts signal
drive to only 3.3V level signals.
Disconnects internal 3.3V regulator connection to VCCIO. This
mode allows for the supply of 1.8V-3.3V power from an external
Nonpower supply, thus allows the processing of signals with logic levels
Default
between 1.8V and 3.3V. VCCIO can be adjusted to match the
interface requirements of external circuitry.
Table 5.1 – Jumper JP1 Pin Description
Disconnects VBUS to VCC. This allows the supply of power from an
external power supply. This mode is known as “Self-Powered”
mode.
Table 5.2 – Jumper JP2 Pin Description
Note: There should never be more than one power output supplied to the same net. If JP2 is fitted when
an external power supply is applied a direct short between two power supplies will be formed, this can
result in damage to the UMFT221XE module and the target circuit.
5.2 Bus Powered Configuration
GND
Alternative
connection
VCCIO
VCC
3V3OUT
VBUS
Alternative
connection
Current Flow
GND
Self-Sourced
3V3 TTL Mode
Jumper JP1 - Closed
Bus Powered
Mode
Jumper JP2 - Closed
Figure 5.1 – Bus Powered Configuration
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A bus powered configuration draws its power from the USB host/hub. The UMFT221XE is configured by
default to be in bus powered mode.
Figure 5.1 illustrates the UMFT221XE 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 FT221X power input (VCC)
+3.3V power is sourced from the FT221X’s voltage regulator output and is connected to the FT221X IO
port’s power input (VCCIO).
Interfacing the UMFT221XE 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).
5.3 Self Powered Configuration
Vcc = 1.8V – 3.3V
Vcc = 5V
VIO
IO0
SCLK
SS#
IO0
SCLK
Optionial
IO1
SS#
Optionial
IO2
Optionial
IO3
MISO
Optionial
IO4
Optionial
IO5
Optionial
IO6
MISO
MCU
GND
Optionial
IO7
VCCIO
VCC
3V3OUT
VBUS
GND
Variable TTL
Mode
Jumper JP1 - Open
Self Power
Mode
Jumper JP2 - Open
Figure 5.2 – Self-Powered Configuration
A self-powered configuration operates on the principle of drawing power from an external power supply,
as oppose to drawing power from the USB host. In this configuration no current is drawn from the USB
bus.
Figure 5.2 illustrates the UMFT221XE in a typical USB self-powered configuration. In this case the jumper
connection of JP1 is removed, which allows 5V power to be supplied to the module VCC pins from an
external source. VCCIO can to be powered from 3V3OUT or the VCC of an external source.
For a self-powered configuration it is necessary to prevent current from flowing back to the USB data
lines when the connected USB host or hub has powered down. To carry out this function the UMFT221XE
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uses an on-board voltage divider network connected to the USB power bus and RESET# pin. This
operates on the principle that when no power is supplied to the VBUS line, the FT221X will automatically
be held in reset by a weak pull-down, when power is applied the voltage divider will apply a weak 3.3V
pull-up. Driving a level to the RESET# pin of the UMFT221XE will override the effect of this voltage
divider. When the FT221X is in reset the USB DP signal pull-up resistor connected to the data lines is
disconnected and no current can flow down the USB lines.
An example of interfacing the FT221X in FT1248 1-bit mode is illustrated in Figure 5.2. This example
shows the wire configuration of the transfer and handshake lines. This example also illustrates that a
voltage other than 3.3V can be supplied to the FT221X’s IO port, this feature is described further and for
bus powered mode in Section Error! Reference source not found..
Alternatively both the FT221X’s IO port and MCU can be powered from the 3V3OUT pin; this approach is
described in Section Error! Reference source not found..
5.4 USB Bus Powered with Power Switching Configuration
VCC
IO0
IO0
SCLK
Optionial
IO1
SS#
Optionial
IO2
Optionial
IO3
SCLK
SS#
MISO
0.1uF
10K
MISO
PWREN#
0.1uF
g
Soft
Start
Circuit
CBUS3
Optionial
IO4
Optionial
IO5
Optionial
IO6
MCU
P-Channel Power
MOSFET
s
d
1K
GND
Optionial
IO7
VCCIO
VCC
3V3OUT
VBUS
GND
Self-Sorced
3.3V TTL Mode
Jumper JP1 - Closed
Bus Powered
Mode
Jumper JP2 - Closed
Figure 5.3 – Bus Powered with Power Switching Configuration
USB bus powered mode is introduced in Section5.3. This section describes how to use bus-powered mode
with a power switch.
USB bus powered circuits are required by USB compliance standards to consume less than 2.5mA (and
less than 100mA when not enumerated and not suspended) when connected to a host or hub when in
USB suspend mode. The PWREN# CBUS function can be used to remove power from external circuitry
whenever the FT221X is not enumerated. (Note: It is impossible to be in suspended mode when PWREN#
is low.)
To implement a power switch using PWREN#, configure a P-Channel Power MOSFET to have a soft start
by fitting a 10K pull-up, a 1K series resistor and a 100nF cap as shown in Figure 5.3.
Connecting the source of the P-Channel MOSFET to 3V3OUT instead of VBUS can allow external logic to
source 3.3V power from the FT221X without breaking USB compliancy. In this setup it is important that
the VCCIO is not sourced from the drain of this MOSFET, this is because the power used to drive the gate
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of this transistor is sourced from VCCIO. VCCIO should be connected directly to 3V3OUT for this setup to
function effectively. It is also important that the external logic must and IO core of the FT221X must not
draw more that 50mA, this is because the current limit of the internal 3.3V regulator is 50mA.
5.5 Variable IO Voltage Supply
Vcc = 1.8V – 3.3V
IO0
SCLK
SS#
MISO
MCU
IO0
SCLK
Optional
IO1
Optional
IO2
Optional
IO3
Optional
IO4
Optional
IO5
Optional
IO6
SS#
MISO
GND
Optional
IO7
VCCIO
VCC
3V3OUT
VBUS
GND
Jumper JP1 - Open
Jumper JP2 - Closed
Figure 5.4 – USB Bus Powered 3.3V Logic Drive
The FT221X can process signals at CMOS/TTL logic levels in the range of 1.8V to 3.3V. This section
describes how to utilise this feature.
Figure 5.4 shows a configuration where the FT221X is interfaced to a device with IOs operating in the
range of 1.8V - 3.3V. The IO ports of this module need to be powered with a voltage level that is equal to
the level of the signals it is processing. Since the FT221X’s embedded voltage regulator only outputs 3V3
the IO ports will need to be powered from another power source when operating at voltage levels other
than 3.3V.
By default, a short is present between 3V3OUT (embedded voltage regulator) and VCCIO (IO port’s
power input) with the connection made by JP1. If an external power supply is used to power the IO ports
this jumper needs to be open.
The configuration described in this section can be implemented in either bus-powered mode or selfpowered mode.
Note 1: The CBUS and DBUS pins are 5V tolerant; however these signals cannot drive signals at 5V
TTL/CMOS. VCCIO is not 5V tolerant; applying 5V to VCCIO will damage the chip.
Note 2: If power is applied to VCCIO and no power is applied to VCC all IOs will be at an unknown state,
this however will not damage the chip. The FT221X also has protective circuitry to prevent the chip being
damaged by a voltage discrepancy between VCCIO and the level of the signal being processed.
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Note 3: When using VCCIO less than 3V3 on a chip from FTDI’s X-chip range, it is recommended to use
pull up resistors (47K) to VCCIO on the data lines, all of the UMFT2xxXE devices include an on-board
pull-up for these lines.
5.6 3.3V Voltage Supply
Vcc = 3.3V
Vcc = 3.3V
IO0
SCLK
SS#
MISO
MCU
IO0
SCLK
Optional
IO1
Optional
IO2
Optional
IO3
Optional
IO4
Optional
IO5
Optional
IO6
SS#
MISO
GND
Optional
IO7
VCCIO
VCC
3V3OUT
VBUS
GND
Jumper JP1 - Closed
Jumper JP2 - Open
Figure 5.5 – USB Self Powered 3.3V Logic Drive
The FT221X can be powered from a single 3.3V supply. This feature is an alternative to having the
FT221X 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 net is connected to
VCC, VCCIO and 3V3OUT.
5.7 Configuring the MTP ROM
The FT221X contains an embedded MTP ROM. This can be used to configure the functions of 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:
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.
ii) The Max Bus Power setting of the MTP ROM should specify the maximum current to be drawn from
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.
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Module Dimensions
2.54
32.5
15.24
19.24
2.3
1.8
34.5
5.8
1.6
9.2
Figure 6.1 – UMFT221XE Module Dimensions
All dimensions are given in millimetres.
The UMFT221XE module exclusively uses lead free components, and is fully compliant with European
Union directive 2002/95/EC.
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IC Package Markings
1
FTDI
I
XXXXXXXXXX
15
FT221XQ
YYWW-D
6
10
The date code format is YYXX where XX = 2 digit week number, YY = 2 digit year number. This is
followed by the revision letter.
The code XXXXXXX is the manufacturing LOT code.
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UMFT221XE Module Circuit Schematic
Figure 8.1 – Module Circuit Schematic
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Internal MTP ROM Configuration
Following a power-on reset or a USB reset the FT221X will scan its internal MTP ROM and read the USB
configuration descriptors stored there. The default values programmed into the internal MTP ROM in the
FT221XQ used on the UMFT221XE are shown in Table 8.1.
Parameter
USB Vendor ID (VID)
USB Product UD
(PID)
Binary Code Decimal
(BCD)
Serial Number
Enabled?
Serial Number
Pull down I/O Pins in
USB Suspend
Manufacturer Name
Product Description
Max Bus Power
Current
Power Source
Device Type
Value
0403h
6015h
Notes
FTDI default VID (hex)
FTDI default PID (hex)
1000h
FTDI default BCD (hex)
Yes
See Note
Disabled
FTDI
UMFT221XE
90mA
Bus Powered
FT221X
0200
USB Version
Remote Wake Up
High Current I/Os
Load VCP Driver
CBUS3
A unique serial number is generated and programmed
into the MTP ROM during final test of the module.
Enabling this option will make the device pull down on
the I2C interface lines when the power is shut off
(PWREN# is high).
Enabled
Disabled
Enabled
Returns USB 2.0 device description to the host. Note:
The device is a USB 2.0 Full Speed device (12Mb/s) as
opposed to a USB 2.0 High Speed device (480Mb/s).
Taking RI# low will wake up the USB host controller
from suspend.
Enables the high drive level on the data and CBUS I/O
pins.
Makes the device load the CVP driver interface for the
device.
Tristate
Table 9.1 – Default Internal MTP ROM Configuration
The internal MTP ROM in the FT221X can be programmed over USB using the utility program FT_PROG.
FT_PROG can be downloaded from the www.ftdichip.com. Users who do not have their own USB vendor
ID but who would like to use a unique Product ID in their design can apply to FTDI for a free block of
unique PIDs. Contact FTDI Support (support1@ftdichip.com) for this service, also see TN_100 and
TN_101.
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UMFT221XE Datasheet
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10 Contact Information
Head Office – Glasgow, UK
Branch Office – Hillsboro, Oregon, USA
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cn.admin@ftdichip.com
Web Site
http://ftdichip.com
Distributor and Sales Representatives
Please visit the Sales Network page of the FTDI Web site for the contact details of our distributor(s) and sales
representative(s) in your country.
System and equipment manufacturers and designers are responsible to ensure that their systems, and any Future Technology Devices International Ltd
(FTDI) devices incorporated in their systems, meet all applicable safety, regulatory and system-level performance requirements. All application-related
information in this document (including application descriptions, suggested FTDI devices and other materials) is provided for reference only. While FTDI
has taken care to assure it is accurate, this information is subject to customer confirmation, and FTDI disclaims all liability for system designs and for any
applications assistance provided by FTDI. Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the user agrees to
defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from such use. This document is subject to change
without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document. Neither the whole nor any part
of the information contained in, or the product described in this document, may be adapted or reproduced in any material or electronic form without the prior
written consent of the copyright holder. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow G41
1HH, United Kingdom. Scotland Registered Company Number: SC136640
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UMFT221XE Datasheet
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Appendix A - References
Document References
FT201XQ
FT231XQ
FT240XQ
AN232R-01
FT_PROG User Guide
TN_100
TN_101
Acronyms and Abbreviations
Terms
Description
DLL
Dynamic Link Library
BCD
Battery Charger Detection
EEPROM
Electrically Erasable Programmable Read Only Memory
I2C
Inter-Integrated Circuit
LDO
Low Drop Out Regulator
PCB
Printed Circuit Board
TTL
Transistor-Transistor Logic
USB
Universal Serial Bus
UART
VCP
Universal Asynchronous Receiver/Transmitter
Virtual COM Port
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UMFT221XE Datasheet
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Appendix B - List of Figures and Tables
List of Figures
Figure 4.1 – Module Pin Out ........................................................................................................... 5
Figure 5.1 – Bus Powered Configuration .......................................................................................... 8
Figure 5.2 – Self-Powered Configuration .......................................................................................... 9
Figure 5.3 – Bus Powered with Power Switching Configuration .......................................................... 10
Figure 5.4 – USB Bus Powered 3.3V Logic Drive ............................................................................. 11
Figure 5.5 – USB Self Powered 3.3V Logic Drive ............................................................................. 12
Figure 6.1 – UMFT221XE Module Dimensions ................................................................................. 13
Figure 8.1 – Module Circuit Schematic ........................................................................................... 15
List of Tables
Table 4.1 – Module Pin Out Description............................................................................................ 6
Table 4.2 – CBUS Signal Options .................................................................................................... 7
Table 5.1 – Jumper JP1 Pin Description ........................................................................................... 8
Table 5.2 – Jumper JP2 Pin Description ........................................................................................... 8
Table 9.1 – Default Internal MTP ROM Configuration ....................................................................... 16
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UMFT221XE Datasheet
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Appendix C – Revision History
Document Title:
UMFT221XE USB to 8-bit SPI/FT1248 Development Module Datasheet
Document Reference No.:
FT_000651
Clearance No.:
FTDI# 293
Product Page:
http://www.ftdichip.com/FT-X.htm
Document Feedback:
Send Feedback
Revision
Changes
Date
Version 1.0
Initial Datasheet Created
2012-06-13
Version 1.1
Added a section for package
marking and changed TIDs.
2013-01-29
Removed
TXLED/RXLED/TX&RXLED CBUS
functionality.
2019-02-25
Version 1.2
Document template changes
made.
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19