Document No.: FT 000647 FT122 ENHANCED USB DEVICE CONTROLLER WITH PARALLEL BUS IC Datasheet Version 1.1 Clearance No.: FTDI 313 Future Technology Devices International Ltd. FT122 (Enhanced USB Device Controller with Parallel Bus IC) The FT122 is a USB generic interface Dedicated clock output pin with programmable controller with the following advanced clock frequency (4 24 MHz) features: 30 kHz output clock provided during suspend USB 2.0 Full Speed compatible Integrated DP pull-up resistor for USB High performance USB device controller with connection integrated SIE, endpoint buffer, transceiver USB connection indicator that toggles with USB and voltage regulators transmit and receive activities Fully integrated clock generation with no external crystal required Supports bus-powered or self-powered Supports 8-bit parallel interface to external applications microcontroller VCC power supply operation at 3.3V or 5V Supports DMA operation Internal 1.8V and 3.3V LDO regulators Supports up to 8 bi-directional endpoints with VCC IO level range from 1.8V to 3.3V total 2K bytes endpoint buffer Integrated power-on-reset circuit Max packet size is 504 bytes for isochronous endpoint and 64 bytes for control/bulk/ UHCI/OHCI/EHCI host controller compatible interrupt endpoint Double buffer scheme for any endpoint -40C to 85C extended operating temperature increases data transfer throughput range Multiple interrupt modes to facilitate both bulk Available in Pb-free TSSOP-28 and QFN-28 and isochronous transfers packages (RoHS compliant) USB Battery Charger detection allowing optimized charging profile 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 product. 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 preliminary 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 2014 Future Technology Devices International Limited 1 Document No.: FT 000647 FT122 ENHANCED USB DEVICE CONTROLLER WITH PARALLEL BUS IC Datasheet Version 1.1 Clearance No.: FTDI 313 1 Typical Applications Provide USB port to Microcontrollers Provide USB port to FPGAs USB Industrial Control Utilising USB to add system modularity Mass storage data transfers for multitude of Isochronous support for video applications in embedded systems applications, including security, industrial control, and quality medical, industrial data-logger, power- inspections metering, and test instrumentation 1.1 Part Numbers Part Number Package FT122T-x TSSOP-28 FT122Q-x QFN-28 Note: Packaging codes for x is: - R: Taped and Reel, (TSSOP is 2,500pcs per reel, QFN is 6,000pcs per reel). - U: Tube packing, 50pcs per tube (TSSOP only) - T: Tray packing, 490pcs per tray (QFN only) For example: FT122T-R is 2,500pcs taped and reel packing 1.2 USB Compliant At the time of writing this datasheet, the FT122 was in the process of completing USB compliance testing. Copyright 2014 Future Technology Devices International Limited 2