Document
FT221X USB 8-BIT SPI/FT1248 IC Datasheet
Version 1.5
Document No.: FT_000630 Clearance No.: FTDI# 263
Future Technology Devices International Ltd. FT221X
(USB 8-Bit FT1248 IC)
The FT221X is a USB to FTDI’s proprietary FT1248 interface with the following advanced
features:
Single chip USB to 1, 2, 4, or 8 bit wide
synchronous interface.
.
Entire USB protocol handled on the chip. No USB specific firmware programming required.
Fully integrated 2048 byte multi-timeprogrammable (MTP) memory, storing device
descriptors and CBUS I/O configuration.
Fully integrated clock generation with no external crystal required plus optional clock output selection enabling a glue-less interface to external MCU or FPGA.
Data transfer rates to 1MByte/s.
512 byte receive buffer and 512 byte transmit buffer utilising buffer smoothing technology to
allow for high data throughput.
FTDI’s royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the
requirement for USB driver development in most cases.
Configurable CBUS I/O pin.
USB Battery Charger Detection. Allows for USB peripheral devices to detect the presence of a higher power source to enable improved charging.
Device supplied pre-programmed with unique USB serial number.
USB Power Configurations; supports buspowered, self-powered and bus-powered with power switching.
Integrated +3.3V level converter for USB I/O.
True 3.3V CMOS drive output and TTL input; operates down to 1V8 with external pull-ups. Tolerant of 5V inputs.
Configurable I/O pin output drive strength; 4 mA(min) and 16 mA(max)
Integrated power-on-reset circuit.
Fully integrated AVCC supply filtering - no external filtering required.
+ 5V Single Supply Operation.
Internal 3V3/1V8 LDO regulators
Low operating and USB suspend current; 8mA (active-typ) and 125uA (suspend-typ).
Low USB bandwidth consumption.
UHCI/OHCI/EHCI host controller compatible.
USB 2.0 Full Speed capable.
Extended operating temperature range; -40 to 85⁰C.
Available in compact Pb-free 20 Pin SSOP and QFN packages (both RoHS compliant).
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
Copyright © Future Technology Devices International Limited
1
FT221X USB 8-BIT SPI/FT1248 IC Datasheet
Version 1.5
1 Typical Applications
Upgrading Legacy Peripherals to USB
Utilising USB to add system modularity
Incorporate USB interface to enable PC
transfers
for
development
system
communication
Interfacing MCU/PLD/FPGA based designs to add USB connectivity
Document No.: FT_000630 Clearance No.: FTDI# 263
USB Industrial Control Dedicated Charging Port detection for enabling higher current battery charging.
1.1 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 32,64-bit
Windows 8 32,64-bit
Windows 7 32,64-bit
Windows 7 32,64-bit
Server 2008 R2 and later; Windows CE 4.2 and Server 2008 R2 and later; Windows CE 4.2
later
and later
Mac OS-X
Mac OS-X
Linux 3.2 and greater
Linux 2.6 and greater
Android
Android
The drivers listed above are all available to download for free from FTDI website (www.ftdichip.com). Various 3rd party drivers are also available for other operating systems - see FTDI website (www.ftdichip.com) for details.
For driver installation, please refer to http://www.ftdichip.com/Documents/InstallGuides.htm
1.2 Part Numbers
Part Number FT221XQ-x FT221XS-x
Package 20 Pin QFN 20 Pin SSOP
Note: Packing codes for x is:
- R: Taped and Reel, (SSOP is 3,000pcs per reel, QFN is 5,000pcs per reel). - U: Tube packing, 58pcs per tube (SSOP only) - T: Tray packing, 490pcs per tray (QFN only)
For exa.