August 22, 2012 CP2105 Errata Datasheet Errata Status Summary The Documentation Errata is applicable to the following document: CP2105 Data Sheet Revision 1.0 Errata # D1 Title ROM Programming Voltage Impact Data Sheet Minor Issue Exists Impact Definition: Each erratum is marked with an impact, as defined below: Minor—Workaround exists. Major—Errata that do not conform to the data sheet or standard. Information—The device behavior is not ideal but acceptable. Typically, the data sheet will be changed to match the device behavior. Errata Details D1. ROM Programming Voltage Description: The data sheet incorrectly indicates that VDD must remain at 3.3 V or higher to successfully write to the configuration ROM. Instead, the voltage on the VIO pin must remain at 3.3 V or higher when writing to the configuration ROM. Impact: For systems that connect VDD and VIO together, there is no impact. For systems that have a separate voltage source for VIO and are configuring the ROM in-system, VIO must remain at 3.3 V while programming is in progress. Resolution: This note will be fixed in the Revision 1.1 of the CP2105 Data Sheet. 400 West Cesar Chavez, Austin, TX 78701 (512) 416-8500 FAX (512) 416-9669 www.silabs.com CP2105ER082212