QS Series USB Modules

The QS Series USB module allows the rapid addition of USB to virtually any device. Housed in a compact SMD package, the module provides a complete solution for converting between USB and CMOS / TTL logic level serial sources. The module can be directly connected to virtually any serial device including microprocessors, RS-232 / RS-485 level converters, or Linx RF modules. The QS Series module is completely self-contained, so it requires no external components, (except a USB jack) and includes all necessary firmware and drivers, freeing the designer from complicated programming. Power can be supplied externally or from the USB bus. Both USB 1.1 and USB 2.0 are supported at data rates up to 3Mbps.

Features

Single chip USB-to-asynchronous serial data conversion
Low cost
3Mbps baud rate
Supports low-speed USB
Full handshaking support for RS-232 and RS-485
Bus- or self-powered
VID, PID, serial number, and descriptors programmed via USB
No external components needed (except a USB jack)
Compact surface-mount package
Drivers and firmware included
Supports Windows 98 / 2000 / ME / XP
USB 1.1 and 2.0 compatible

Applications

Interface / Upgrade Legacy Peripherals
Interfacing Microcontrollers to USB
USB-to-RS-232 / RS-485 Converters
Interfacing RF Modules to USB
USB Smart Card Readers
USB Modems
Robotics
USB Instrumentation
USB Game Controllers
USB-to-Serial Converter Cables

Software

Data Loop Example
This file contains the Visual Basic source code for a program that will send a string of characters to the QS Series USB module and read it back. This program requires that the DATA_IN and DATA_OUT lines on the module be connected together. The software makes use of the Direct Drivers and shows how to use the functions in a simple routine.
QS EEPROM Programmer
The Linx QS Series USB module can be programmed to display a custom name, description, and manufacturer ID as well as a unique serial number so that it can be distinguished from other modules on the same bus. The Linx QS Series programmer is an executable that can program this information to the module's on board EEPROM through the USB bus.

Drivers

Installing USB Drivers
Certified for Windows 2000, Windows XP/Vista/7 (32/64) and Windows Server 2003/2008 (32/64)
QS C Header File
Certified for Windows 2000, Windows XP/Vista/7 (32/64) and Windows Server 2003/2008 (32/64)
QS Series Certified Driver Installer
Bundled file; automatically installs the drivers. Certified for Windows 2000, Windows XP/Vista/7 (32/64) and Windows Server 2003/2008 (32/64)
QS Series Certified Driver Package
Separate files; no automatic installation. Certified for Windows 2000, Windows XP/Vista/7 (32/64) and Windows Server 2003/2008 (32/64)
QS VB Header File
Certified for Windows 2000, Windows XP/Vista/7 (32/64) and Windows Server 2003/2008 (32/64)

Data Guides

QS Series USB Module Data Guide

Documents

AN-00200
SDM-USB-QS-S USB Programmer's Guide
AN-00201
Installing the SDM-USB-QS-S Drivers

Ordering Information

SDM-USB-QS-S: QS Series USB Module
MDEV-USB-QS: QS Series Master Development System