Document No.: FT 000648 FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC Datasheet Version 1.2 Clearance No.: FTDI 312 Future Technology Devices International Ltd. FT121 (Enhanced USB Device Controller with SPI Slave IC) The FT121 is a USB generic interface Integrated DP pull-up resistor for USB controller with the following advanced connection features: Supports bus-powered or self-powered USB 2.0 Full Speed compatible applications High performance USB device controller with VCC power supply operation at 3.3V or 5V integrated SIE, endpoint buffer, transceiver Internal 1.8V and 3.3V LDO regulators and voltage regulators VCC IO level range from 1.8V to 3.3V Fully integrated clock generation with no external crystal required Integrated power-on-reset circuit Supports Serial Parallel interface (SPI) slave to UHCI/OHCI/EHCI host controller compatible external microcontroller -40C to 85C extended operating temperature Supports up to 8 bi-directional endpoints with range total 2k bytes endpoint buffer Max packet size is 504 bytes for isochronous Available in Pb-free TSSOP-16 and QFN-16 endpoint and 64 bytes for packages (RoHS compliant) control/bulk/interrupt endpoint Double buffer scheme for any endpoint increases data transfer throughput Multiple interrupt modes to facilitate both bulk and isochronous transfers 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 000648 FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC Datasheet Version 1.2 Clearance No.: FTDI 312 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 FT121T-x TSSOP-16 FT121Q-x QFN-16 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, 96pcs per tube (TSSOP only) - T: Tray packing, 490pcs per tray (QFN only) For example: FT121T-R is 2,500pcs taped and reel packing 1.2 USB Compliant At the time of writing this datasheet, the FT121 was in the process of completing USB compliance testing. Copyright 2014 Future Technology Devices International Limited 2