FT121 Datasheet, PDF (1/46 Pages) Future Technology Devices International Ltd. – FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC Datasheet Version 1.2

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
controller with the following advanced ^
features:

 USB 2.0 Full Speed compatible
 High performance USB device controller with

integrated SIE, endpoint buffer, transceiver
and voltage regulators

Integrated DP pull-up resistor for USB
connection
Supports bus-powered or self-powered
applications
VCC power supply operation at 3.3V or 5V
Internal 1.8V and 3.3V LDO regulators
 Fully integrated clock generation with no ^{ VCC IO level range from 1.8V to 3.3V}
external crystal required
 Integrated power-on-reset circuit
 Supports Serial Parallel interface (SPI) slave to
 UHCI/OHCI/EHCI host controller compatible
external microcontroller
 -40°C to 85°C extended operating temperature
 Supports up to 8 bi-directional endpoints with
total 2k bytes endpoint buffer
range
 Max packet size is 504 bytes for isochronous _{ Available in Pb-free TSSOP-16 and QFN-16}
endpoint
and
64
bytes
for
control/bulk/interrupt endpoint
packages (RoHS compliant)
 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
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