STEVAL-ISQ002V1 RS232 to PMBus bridge demonstration board based on the ST72264G1 Data brief Features ■ Based on the ST72264G1 microcontroller with multi-master I2C interface ■ The microcontroller acts as PMBus master which communicates with any compatible PMBus slave using a 4-pin interface ■ RoHS compliant Description This STEVAL-ISQ002V1 implements a PMBus™ (power management bus), an open standard protocol that defines a means of communicating with power conversion and other devices. The PMBus protocol has helped establish the first truly open communications standard for digital control of power systems. Implemented over the industrystandard SMBus (system management bus) serial interface, the PMBus protocol facilitates the programming, control and real-time monitoring of compliant power conversion products. STEVAL-ISQ002V1 The demonstration is based on the ST72F264G1 microcontroller and communicates with the PC via Microsoft® HyperTerminal. The microcontroller employs a multi-master I2C peripheral for PMBus communication. The firmware of the application performs the PMBus bus protocols described in the PMBus power system management protocol specification V 1.0. The purpose of the STEVAL-ISQ002V1 is to demonstrate the capabilities of the PMBus feature using the ST7 I2C peripheral to support standard PMBus commands. February 2011 Doc ID 010012 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 Circuit schematic STEVAL-ISQ002V1 1 Circuit schematic Figure 1. STEVAL-ISQ002V1 schematic diagram !-6 2/4 Doc ID 010012 Rev 1 STEVAL-ISQ002V1 2 Revision history Revision history Table 1. Document revision history Date Revision 25-Feb-2011 1 Changes Initial release. Doc ID 010012 Rev 1 3/4 STEVAL-ISQ002V1 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2011 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 4/4 Doc ID 010012 Rev 1