Revision Change Notice #1410291 ____________________________________________________________________________________________________ User Registration Register today to create your account on Silabs.com. Your personalized profile allows you to receive technical document updates, new product announcements, “how-to” and design documents, product change notices (PCN) and other valuable content available only to registered users. http://www.silabs.com/profile PCN Date: 10/29/2014 Effective Date: 2/4/2015 Title: C8051F98x/9x Revision C Originator: Greg Hodgson Phone: 512-532-5766 Dept: MCU & Wireless Customer Contact: Kathy Haggar Phone: 512-532-5261 Dept: Sales PCN Type: Datasheet Product Revision PCN Details Description of Change: Silicon Labs is pleased to announce hardware revision C of the C8051F98x/F99x devices and revision 1.2 of the corresponding datasheet for these products, and hardware revision C of C8051F996 wafer sales and revision 1.2 of the corresponding datasheet. Hardware revision C makes the following enhancements and modifications: 1. Changes the reset value of REVID SFR and REVID C2 will read 0x02 for Revision C instead of 0x01 for Revision B. 2. Eliminates a potential issue with the RTC after a sleep wake up in some applications. This behavior could occur when VBAT falls below 1.5V and the MCU was in sleep mode for ~100ms. If the behavior occurred, the RTC would either miss a clock period or change in frequency. 3. Improves the robustness of the device during VBAT ramp time that exceeds maximum datasheet specifications. 4. Adjusts the min, typ and max VDD brownout falling voltage threshold of the power on reset from 0.4V, 0.7V, and 1.0V respectively to 0.75V, 1.0V, and 1.3V respectively. C8051F98x/9x datasheet revision 1.2 and C8051F996-C-GDI datasheet revision 1.2 updates the orderable part number to revision C along with other minor edits noted in the datasheet change notes. Two published errata and workarounds are now documented in the datasheet: 1. Address 0x0000 of XRAM On device reset, or upon waking up from Sleep mode, address 0x0000 of external memory may be overwritten by an indeterminate value. The indeterminate value is 0x00 in most situations. 2. POR Supply Monitor for supply voltages greater than 2.4 V Description: The POR Supply Monitor should not be disabled if the supply voltage is greater than 2.4 V. After the effective date of this PCN, Silicon Labs reserves the right to deliver Revision C to customer ordering Revision B. Refer to Product Identification section of this PCN for details. W7206F5 Product Revision Notice Form rev A The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 4 Revision Change Notice #1410291 ____________________________________________________________________________________________________ Reason for Change: C8051F98x/9x revision C release C8051F98x/9x datasheet revision 1.2 release C8051F996 revision C wafer sales release C8051F996 datasheet revision 1.2 release Impact on Form, Fit, Function, Quality, Reliability: The following functions are impacted: - The reset value of REVID SFR and REVID C2 - Behavior with the RTC after a Sleep wake up has been fixed - The robustness of the device is improved during VDD ramp time that exceeds maximum datasheet specifications. - Adjusted VDD brownout falling voltage thresholds Product Identification: Revision B Existing OPN Revision C Replacement OPN Revision B Existing OPN Revision C Replacement OPN C8051F980-GM C8051F980-C-GM C8051F980-GMR C8051F980-C-GMR C8051F981-GM C8051F981-C-GM C8051F981-GMR C8051F981-C-GMR C8051F982-GM C8051F982-C-GM C8051F982-GMR C8051F982-C-GMR C8051F983-GM C8051F983-C-GM C8051F983-GMR C8051F983-C-GMR C8051F985-GM C8051F985-C-GM C8051F985-GMR C8051F985-C-GMR C8051F986-GM C8051F986-C-GM C8051F986-GMR C8051F986-C-GMR C8051F986-GU C8051F986-C-GU C8051F986-GUR C8051F986-C-GUR C8051F987-GM C8051F987-C-GM C8051F987-GMR C8051F987-C-GMR C8051F987-GU C8051F987-C-GU C8051F987-GUR C8051F987-C-GUR C8051F988-GM C8051F988-C-GM C8051F988-GMR C8051F988-C-GMR C8051F988-GU C8051F988-C-GU C8051F988-GUR C8051F988-C-GUR C8051F989-GM C8051F989-C-GM C8051F989-GMR C8051F989-C-GMR C8051F989-GU C8051F989-C-GU C8051F989-GUR C8051F989-C-GUR C8051F990-GM C8051F990-C-GM C8051F990-GMR C8051F990-C-GMR C8051F991-GM C8051F991-C-GM C8051F991-GMR C8051F991-C-GMR C8051F996-GM C8051F996-C-GM C8051F996-GMR C8051F996-C-GMR C8051F996-GU C8051F996-C-GU C8051F996-GUR C8051F996-C-GUR C8051F997-GM C8051F997-C-GM C8051F997-GMR C8051F997-C-GMR C8051F997-GU C8051F997-C-GU C8051F997-GUR C8051F997-C-GUR C8051F996-GDI C8051F996-C-GDI Last Date of Unchanged Product: 2/4/2015 Qualification Samples: Samples are available now. Please contact your Silicon Labs sales representative to order samples. A list of Silicon Labs sales representatives is available at www.silabs.com. W7206F5 Product Revision Notice Form rev A The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 5 Revision Change Notice #1410291 ____________________________________________________________________________________________________ Specific conditions of acceptance of this change will be considered on a case by case basis if written notice is submitted within 30 days of this notice. To request further data or inquire about this notification, please contact your local Silicon Labs sales representative. A list of Silicon Labs sales representatives is available at www.silabs.com. In some cases rejection of a change notice may impact Silicon Labs product pricing, delivery, quality, or reliability. Customer Early Acceptance Sign Off: Customers may approve early PCN acceptance by completing the information below: Early Acceptance: Date: Name: Company: Email your early Acceptance approval to: [email protected] Qualification Data: Qualification data is available in the Appendix. W7206F5 Product Revision Notice Form rev A The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 6 Revision Change Notice #1410291 ____________________________________________________________________________________________________ Appendix W7206F5 Product Revision Notice Form rev A The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 7 Revision Change Notice #1410291 ____________________________________________________________________________________________________ W7206F5 Product Revision Notice Form rev A The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 8 Revision Change Notice #1410291 ____________________________________________________________________________________________________ W7206F5 Product Revision Notice Form rev A The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 9 Revision Change Notice #1410291 ____________________________________________________________________________________________________ W7206F5 Product Revision Notice Form rev A The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 10