HCS370
Clarifications/Corrections to the Data
Sheet:
In the Device Data Sheet (DS41111), the following clar-
ifications and corrections should be noted.
1.
Module: DC Characteristics
In Table 9-1, under the heading, “Standard Operat-
ing Conditions”, change industrial operating tem-
perature from -40° to -20° (pages 24 and 25).
Under Parameter No. D053, Max. should be
changed from
±200
to
±250
and
±350
to
±400
(page 24), as marked in bold below.
TABLE 9-1:
DC CHARACTERISTICS: HCS370
Standard Operating Conditions (unless otherwise stated)
Operating temperature
0
°
C
≤
T
A
≤
+70
°
C (Commercial)
–20
°
C
<
T
A
<
+85
°
C (Industrial)
Characteristic
Min
Typ†
Max
Units
Conditions
DC Characteristics
All Pins Except
Power Supply Pins
Param
No.
Sym
Input Threshold Voltage
D053
Vtol
Vlow detect tolerance
—
—
—
—
±
250
±
400
mV
mV
setting 5 = 2.25V
setting 25 = 4.25V
2.
Module: AC Characteristics
In Table 9-2, under the heading, “Standard Operat-
ing Conditions”, change industrial operating tem-
perature from -40° to -20° (page 26), as marked in
bold below.
TABLE 9-2:
Commercial (C):
Industrial (I):
AC CHARACTERISTICS
T
AMB
= 0°C to +70°C
T
AMB
= -20°C to +85°C
2.05V < V
DD
< 5.5
Sym.
Min
Typ.
Max.
Unit
Conditions
Parameter
DS80137A-page 2
2002 Microchip Technology Inc.
Note the following details of the code protection feature on PICmicro
®
MCUs.
•
•
•
The PICmicro family meets the specifications contained in the Microchip Data Sheet.
Microchip believes that its family of PICmicro microcontrollers is one of the most secure products 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 knowl-
edge, require using the PICmicro microcontroller in a manner outside the operating specifications contained in the data sheet.
The person doing so may be 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 product.
•
•
•
If you have any further questions about this matter, please contact the local sales office nearest to you.
Information contained in this publication regarding device
applications and the like is intended through suggestion 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 Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement 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, K
EE
L
OQ
,
MPLAB, PIC, PICmicro, PICSTART, and PRO MATE are regis-
tered trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
FilterLab, microID, MXDEV, MXLAB, PICMASTER, SEEVAL
and The Embedded Control Solutions Company are regis-
tered trademarks of Microchip Technology Incorporated in the
USA.
dsPIC, dsPICDEM.net, ECONOMONITOR, FanSense,
FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP,
ICEPIC, microPort, Migratable Memory, MPASM, MPLIB,
MPLINK, MPSIM, MXLAB, PICC, PICDEM, PICDEM.net,
rfPIC, Select Mode 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 Incorporated in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2002, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
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 Mountain View, California in March 2002.
The Company’s quality system processes and
procedures are QS-9000 compliant for its
PICmicro
®
8-bit MCUs, K
EE
L
OQ
®
code hopping
devices, Serial EEPROMs, microperipherals,
non-volatile memory and analog products. In
addition, Microchip’s quality system for the
design and manufacture of development
systems is ISO 9001 certified.
2002 Microchip Technology Inc.
DS80137A - page 5
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