2003 Microchip Technology Inc. DS80133F-page 1
PIC16F87XA
The PIC16F87XA Rev. B2 parts you have received
conform functionally to the Device Data Sheet
(DS39582B), except for the anomalies described
below.
All the problems listed here will be addressed in future
revisions of the P IC16F 87XA silicon.
1. Module: A/D (Operation)
The ADC is disabled when ADCON1<3:0> = 011x
(all inputs digital) and CMCON<2:0> = 111 (com-
parators are off). This is a special case that
conflicts with the second sentence of Note 1 on
page 131 of the device data sheet: “Pins
configured as digital inputs will convert an analog
input.”
Work around
For the ADC m odule to be en abled, it is nec essary
to either:
1. Enable the comparators (C MCON<2:0> ≠ 111);
or
2. Configure at least one ADC channel as an
analog inp ut (ADCO N1< 3:0> ≠ 011x).
2. Module: Data EEPROM
Placing the device in Sleep mode, while the
EEADR register points to an EEPROM address
that cont ain s a valu e other tha n FFh, ma y resul t in
a power-down current (IPD) that exceeds the pub-
lished specifications (when the temperature is
higher than 60°C).
Work around
Before entering Sleep mode, make sure that
EEADR is pointing to a data EEPROM address
that contains the value FFh.
If EEADR is not used elsewhere in the code, be
sure to initialize its value to a known address that
cont ains the value FFh following any devi ce Reset,
inc luding POR.
Clarifications/Correc ti ons to the Data
Sheet:
In the Device Data Sheet (DS39582B), the following
clarifications and corrections should be noted.
None.
PIC16F87XA Rev. B2 Silicon Errata Sheet
PIC16F87XA
DS80133F-page 2 2003 Microchip Technology Inc.
APPENDIX A: REVISION HISTORY
Rev A Document (7/2002)
First revision of this document.
Added silicon issue 1 (A/D – Operation) and data sheet
clarification issue 1 (Comparator).
Rev B Document (10/2002)
Added silicon issue 2 (Data EEPROM).
Rev C Document (11/2002)
Typographic corrections to silicon issue 1
(A/D – Operation).
Rev D Document (3/2003)
Added data sheet clarification issue 2
(Packaging – Pinout and Product Identification).
Rev E Document (9/2003)
Added data sheet clarification issue 3 (Voltage
Referenc e Specifications).
Rev F Document (10/2003)
Removed all data sheet clarification issues because of
updated data sheet revision.
DS80133F-page 3 2003 Microchip Technology Inc.
Information contained in this publication regarding device
applications and the like is intended through sug gestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microc hip Technology Incorporat ed with respect
to the accuracy or use of such inf orm ation, or inf ringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip’s products as critical com-
ponents in life support systems is not authorized except with
express written approval by Microchip. No licenses are con-
veyed, implicitly or otherwise, under any intellectual property
rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, MPLAB, PIC, PICmicro, PICSTART,
PRO MATE and PowerSmart are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
AmpLab, FilterLab, microID, MXDEV, MXLAB, PICMASTER,
SEEVAL and The Embedded Control Solutions Company are
registered trademarks of Microchip Technology Incorporated
in the U.S.A.
Application Maestro, dsPICDEM, dsPICDEM.net, ECAN,
ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
PICkit, PICDEM, PICDEM.net, PowerCal, PowerInfo,
PowerMate, PowerTool, rfLAB, rfPIC, Select Mode,
SmartSensor , SmartShunt, SmartTel and Total Endurance are
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
Serialized Quick Turn Programming (SQTP) is a service mark
of Microchip Technology Incorpora ted in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2003, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
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 prot ection features of our
products. Attempts to break microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such ac t s
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Microchip received QS-9000 quality system
certification for its worldwide headquarters,
design and wafer fabrication facilities in
Chandler and Tempe, Arizona in July 1999
and M ountain View, Cali fornia i n March 2002.
The Company’s quality system processes and
procedures are QS-9000 compliant for its
PICmicro® 8-bit MCUs, KEELOQ® code hopping
devices, Serial EEPROMs, micr operipherals,
non-volatile memory and analog products. In
addition, Microchip’s quality system for the
design an d manufacture of development
systems is ISO 9001 certified.
DS80133F-page 4 2003 Microchip Technology Inc.
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