PIC16LF1904/1906/1907 PIC16LF1904/1906/1907 Family Silicon Errata and Data Sheet Clarification The PIC16LF1904/1906/1907 family devices that you have received conform functionally to the current Device Data Sheet (DS41569A), except for the anomalies described in this document. The silicon issues discussed in the following pages are for silicon revisions with the Device and Revision IDs listed in Table 1. The silicon issues are summarized in Table 2. The errata described in this document will be addressed in future revisions of the PIC16LF1904/1906/1907 silicon. Note: This document summarizes all silicon errata issues from all revisions of silicon, previous as well as current. Only the issues indicated in the last column of Table 2 apply to the current silicon revision (A2). For example, to identify the silicon revision level using MPLAB IDE in conjunction with MPLAB ICD 2 or PICkit™ 3: 1. 2. 3. 4. Using the appropriate interface, connect the device to the MPLAB ICD 2 programmer/ debugger or PICkit™ 3. From the main menu in MPLAB IDE, select Configure>Select Device, and then select the target part number in the dialog box. Select the MPLAB hardware tool (Debugger>Select Tool). Perform a “Connect” operation to the device (Debugger>Connect). Depending on the development tool used, the part number and Device Revision ID value appear in the Output window. Note: Data Sheet clarifications and corrections start on page 4, following the discussion of silicon issues. The silicon revision level can be identified using the current version of MPLAB® IDE and Microchip’s programmers, debuggers, and emulation tools, which are available at the Microchip corporate web site (www.microchip.com). TABLE 1: If you are unable to extract the silicon revision level, please contact your local Microchip sales office for assistance. The DEVREV values for the various PIC16LF1904/ 1906/1907 silicon revisions are shown in Table 1. SILICON DEVREV VALUES DEVICE ID<13:0> Part Number DEV<8:0>(1) REV<4:0> Silicon Revision(2) A1 A2 PIC16LF1904 01 1100 100 0 0001 0 0010 PIC16LF1906 01 1100 011 0 0001 0 0010 PIC16LF1907 01 1100 010 0 0001 0 0010 Note 1: 2: The Device ID is located in the configuration memory at address 8006h. Refer to the “PIC16(L)F193X/(L)F194X/LF190X Memory Programming Specification” (DS41397) for detailed information on Device and Revision IDs for your specific device. 2011-2012 Microchip Technology Inc. DS80524C-page 1 PIC16LF1904/1906/1907 TABLE 2: SILICON ISSUE SUMMARY Module Feature Item Number Issue Summary Affected Revisions(1) A1 A2 High-Frequency Internal HFINTOSC Operation Oscillator (HFINTOSC) 1.1 HFINTOSC Max. VDD at -40°C X Oscillator HFINTOSC Ready/Stable bit 2.1 Bits remained set to ‘1’ after initial trigger X X Oscillator Clock Switching 2.2 Clock switching fails X X Oscillator Oscillator Start-up Timer (OST) bit 2.3 OST bit remains set X X Note 1: Only those issues indicated in the last column apply to the current silicon revision. DS80524C-page 2 2011-2012 Microchip Technology Inc. PIC16LF1904/1906/1907 Silicon Errata Issues Note: This document summarizes all silicon errata issues from all revisions of silicon, previous as well as current. Only the issues indicated by the shaded column in the following tables apply to the current silicon revision (A2). 1. Module: High-Frequency Internal Oscillator (HFINTOSC) 1.1 HFINTOSC Max. VDD at -40°C The High-Frequency Internal Oscillator may stop working at -40°C when VDD is 3.6V. Work around 1. 2. Use the Internal Oscillator (INTOSC) with VDD = 3.5V or less. Operate the device with VDD = 3.0V then, after the High-Frequency Oscillator (HFINTOSC) is operating at speed, increase VDD to 3.6V. Affected Silicon Revisions A1 A2 X 2. Module: Oscillator 2.1 OSCSTAT bits: HFIOFR and HFIOFS When HFINTOSC is selected, the HFIOFR and HFIOFS bits will become set when the oscillator becomes ready and stable. Once these bits are set they become “stuck”, indicating that HFINTOSC is always ready and stable. If the HFINTOSC is disabled, the bits fail to be cleared. Work around None. Affected Silicon Revisions A1 A2 X X 2.2 Clock Switching When switching clock sources between an INTOSC clock source and an external clock source operating at a different power mode, one corrupted instruction may be executed after the switch occurs. Work around When clock switching from an external oscillator clock source, first switch to 16 MHz HFINTOSC. Once running at 16 MHz HFINTOSC, configure IRCF to run at desired frequency. When clock switching from an INTOSC to an external oscillator clock source, first switch from desired INTOSC frequency to HFINTOSC High-Power mode (8 MHz or 16 MHz). Once running from HFINTOSC, switch to the external oscillator clock source. Affected Silicon Revisions A1 A2 X X 2.3 Oscillator Start-up Timer (OST) bit During the two-speed start-up sequence, the OST is enabled to count 1024 clock cycles. After the count is reached, the OSTS bit is set, the system clock is held low until the next falling edge of the external crystal (LP, XT or HS mode), before switching to the external clock source. When an external oscillator is configured as the primary clock and Fail-Safe Clock mode is enabled (FCMEN = 1), any of the following conditions will result in the Oscillator Start-up Timer (OST) failing to restart: • MCLR Reset • Wake from Sleep • Clock change from INTOSC to Primary Clock This anomaly will manifest itself as a clock failure condition for external oscillators which take longer than the clock failure time-out period to start. Work around None. Affected Silicon Revisions 2011-2012 Microchip Technology Inc. A1 A2 X X DS80524C-page 3 PIC16LF1904/1906/1907 Data Sheet Clarifications The following typographic corrections and clarifications are to be noted for the latest version of the device data sheet (DS41569A): Note: Corrections are shown in bold. Where possible, the original bold text formatting has been removed for clarity. None. DS80524C-page 4 2011-2012 Microchip Technology Inc. PIC16LF1904/1906/1907 APPENDIX A: DOCUMENT REVISION HISTORY Rev A Document (05/2011) Initial release of this document. Rev B Document (07/2011) Added Silicon revision A2. Rev C Document (01/2012) Added Modules 2.1, 2.2 and 2.3. 2011-2012 Microchip Technology Inc. DS80524C-page 5 PIC16LF1904/1906/1907 NOTES: DS80524C-page 6 2011-2012 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2011-2012, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. ISBN: 9781620760000 Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. 2011-2012 Microchip Technology Inc. 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