Renesas teams up with Thesycon to provide USB support on H8SX/1664 microcontroller

Thesycon’s USB device software stack implements the core functionality of a USB device and optionally provides device class specific protocols. It enables developers to easily add USB device functionality to embedded systems incorporating Renesas H8S/H8SX USB microcontrollers.



The software stack complies with the USB v2.0 specification. It supports the transfer modes control, bulk and interrupt at full speed. Complete USB request processing and extended error recovery mechanisms that are required for reliable operation are implemented internally. The USB stack firmware is written in ANSI-C and supports the Renesas High-performance Embedded Workshop (HEW) development environment. For easy integration the software is designed as a library and provided as source code. The library does not depend on any specific operating system support. It can be integrated into any embedded OS, or can be used in stand-alone applications.



The modular design allows engineers to implement proprietary USB interfaces and standard device classes. The creation of composite devices, that implement multiple logical functions on one physical controller, as well as multi-configuration devices are fully supported. To use the USB Function API directly without a device class, only basic USB knowledge is required. The device class specific APIs provide a high abstraction level and are easy to use.



“With the generic Embedded USB Device Stack Thesycon provides a reliable and robust firmware library for microcontrollers which is implemented for industrial use” says Udo Eberhardt, Managing Director, Thesycon Systemsoftware & Consulting GmbH. “In addition we provide the appropriate device drivers for PCs. So it is possible for a customer to get a complete solution from one supplier with premium technical support.”



“Products in the PC, office automation, digital consumer, and industrial fields continue to offer a variety of new functions while facing demands for systems to be made smaller and less expensive “says Günter Plechinger, Renesas Technology’s Consumer-Industrial Business Unit Marketing Engineer. “Renesas Technology has responded to this trend with the release of new H8SX Family high-performance 32-bit CISC microcontroller models addressing connectivity needs.”



To support the development process, a USB bus powered E10A-USB can be used as an emulator. The RSK1664 starter kit and the H8SX/1654 and 1664 series microcontrollers are available via all Renesas distributors. The RSK H8SX1664 board connects to the popular Renesas debugger E10A-lite (HS0005KCU11H), which is also available ex stock.