PIC12LF1552 Silicon Errata and Data Sheet Clarification

PIC12LF1552
PIC12LF1552 Silicon Errata and Data Sheet Clarification
The PIC12LF1552 device that you have received
conforms functionally to the current Device Data Sheet
(DS41674B), except for the anomalies described in this
document.
For example, to identify the silicon revision level
using MPLAB IDE in conjunction with a hardware
debugger:
1.
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.
2.
3.
The errata described in this document will be addressed
in future revisions of the PIC12LF1552 silicon.
4.
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).
5.
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:
Using the appropriate interface, connect the
device to the hardware debugger.
Open an MPLAB IDE project.
Configure the MPLAB IDE project for the
appropriate device and hardware debugger.
Based on the version of MPLAB IDE you are
using, do one of the following:
a) For MPLAB IDE 8, select Programmer >
Reconnect.
b) For MPLAB X IDE, select Window >
Dashboard and click the Refresh Debug
Tool Status icon (
).
Depending on the development tool used, the
part number and Device Revision ID value
appear in the Output window.
Note:
If you are unable to extract the silicon
revision level, please contact your local
Microchip sales office for assistance.
The DEVREV values for the PIC12LF1552 silicon
revision are shown in Table 1.
SILICON DEVREV VALUES
DEVICE ID<13:0>(1),(2)
Part Number
PIC12LF1552
Note 1:
2:
DEV<8:0>
0010 1011 110
REV<4:0> Silicon Revision
A1
A2
0 0001
0 0010
The Device ID is located in the configuration memory at address 8006h.
Refer to the “PIC12LF1552 Memory Programming Specification” (DS41642) for detailed information on
Device and Revision IDs for your specific device.
 2013 Microchip Technology Inc.
DS80000578B-page 1
PIC12LF1552
TABLE 2:
SILICON ISSUE SUMMARY
Module
CPU
Note 1:
Feature
BRA/BRW
Item
Number
1.1
Affected Revisions(1)
Issue Summary
A1
An interrupt during execution of BRA or BRW
instruction can return an incorrect PC value.
A2
X
Only those issues indicated in the last column apply to the current silicon revision.
DS80000578B-page 2
 2013 Microchip Technology Inc.
PIC12LF1552
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: CPU
1.1 BRA/BRW
If a BRA or BRW instruction is executed
concurrently with an interrupt event, the ISR
routine can restore the PC to an incorrect value.
Work around
Use the GOTO instruction rather than the BRA or
BRW instruction.
Affected Silicon Revisions
A1
A2
X
 2013 Microchip Technology Inc.
DS80000578B-page 3
PIC12LF1552
Data Sheet Clarifications
The following typographic corrections and clarifications
are to be noted for the latest version of the device data
sheet (DS41674B):
Note:
Corrections are shown in bold. Where
possible, the original bold text formatting
has been removed for clarity.
None.
DS80000578B-page 4
 2013 Microchip Technology Inc.
PIC12LF1552
APPENDIX A:
DOCUMENT
REVISION HISTORY
Rev A Document (08/2013)
Initial release of this document.
Rev B Document (10/2013)
Added Silicon Revision A2.
 2013 Microchip Technology Inc.
DS80000578B-page 5
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
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Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash
and UNI/O are registered trademarks of Microchip Technology
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FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MTP, SEEVAL and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.
Analog-for-the-Digital Age, Application Maestro, BodyCom,
chipKIT, chipKIT logo, CodeGuard, dsPICDEM,
dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O,
Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA
and Z-Scale are trademarks of Microchip Technology
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SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
GestIC and ULPP are registered trademarks of Microchip
Technology Germany II GmbH & Co. KG, a subsidiary of
Microchip Technology Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2013, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 9781620775110
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DS80000578B-page 6
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DS80000578B-page 7