Instruction Manual
TMS 143
MCS251 Microcontroller Support
070-9912-00
Warning
The servicing instructions are for use by
qualified personnel only. To avoid personal
injury, do not perform any servicing unless you
are qualified to do so. Refer to all safety
summaries prior to performing service.
Copyright T ektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its suppliers and are
protected by United States copyright laws and international treaty provisions.
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the
Rights in T echnical Data and Computer Software clause at DFARS 252.227-7013, or subparagraphs (c)(1) and (2) of the
Commercial Computer Software – Restricted Rights clause at F AR 52.227-19, as applicable.
T ektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Printed in the U.S.A.
T ektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX and TEK are registered trademarks of T ektronix, Inc.
SOFTWARE WARRANTY
T ektronix warrants that the media on which this software product is furnished and the encoding of the programs on
the media will be free from defects in materials and workmanship for a period of three (3) months from the date of
shipment. If a medium or encoding proves defective during the warranty period, T ektronix will provide a
replacement in exchange for the defective medium. Except as to the media on which this software product is
furnished, this software product is provided “as is” without warranty of any kind, either express or implied.
T ektronix does not warrant that the functions contained in this software product will meet Customer’s
requirements or that the operation of the programs will be uninterrupted or error-free.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration
of the warranty period. If T ektronix is unable to provide a replacement that is free from defects in materials and
workmanship within a reasonable time thereafter, Customer may terminate the license for this software product
and return this software product and any associated materials for credit or refund.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS
OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’
RESPONSIBILITY TO REPLACE DEFECTIVE MEDIA OR REFUND CUSTOMER’S PAYMENT IS
THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS
WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER
TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH
DAMAGES.
HARDWARE WARRANTY
T ektronix warrants that the products that it manufactures and sells will be free from defects in materials and
workmanship for a period of one (1) year from the date of shipment. If a product proves defective during this
warranty period, T ektronix, at its option, either will repair the defective product without charge for parts and labor,
or will provide a replacement in exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration
of the warranty period and make suitable arrangements for the performance of service. Customer shall be
responsible for packaging and shipping the defective product to the service center designated by T ektronix, with
shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a
location within the country in which the T ektronix service center is located. Customer shall be responsible for
paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage
resulting from attempts by personnel other than T ektronix representatives to install, repair or service the product;
b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any
damage or malfunction caused by the use of non-T ektronix supplies; or d) to service a product that has been
modified or integrated with other products when the effect of such modification or integration increases the time
or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS
OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’
RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUST OMER FOR BREACH OF THIS WARRANTY.
TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT , SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR
THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
Table of Contents
Getting Started
Operating Basics
General Safety Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface: Microcontroller Support Documentation ix. . . . . . . . . . . . . . .
Manual Conventions ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logic Analyzer Documentation x. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contacting T ektronix x. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Support Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logic Analyzer Software Compatibility 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logic Analyzer Configuration 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Requirements And Restrictions 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functionality Not Supported 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting To A System Under Test 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
With A PLCC Probe Adapter 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Without A Probe Adapter 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Channel Assignments 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU To Channel Probe Connections 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Up the Support 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Channel Group Definitions 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How Data Is Acquired 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clocking Options 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Custom Clocking 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquiring and Viewing Disassembled Data 2–5. . . . . . . . . . . . . . . . . . . . .
Acquiring Data 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Viewing Disassembled Data 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware Display Format 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software Display Format 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Flow Display Format 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Subroutine Display Format 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing How Data Is Displayed 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cycle Marking 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Display Selections 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying Exception Vectors 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TMS 143 MCS251 Microcontroller Support Instruction Manual
i
Table of Contents
Specifications
Probe Adapter Description 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specification T ables 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
Replacing Signal Leads 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Protective Sockets 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Electrical Parts
Parts Ordering Information 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Electrical Parts List 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagrams and Circuit Board Illustrations 5–5. . . . . . . . . . . . . . . . . . . . . .
Symbols 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Values 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graphic Items and Special Symbols Used in This Manual 5–5. . . . . . . . . . . . . . . . .
Component Locator Diagrams 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Mechanical Parts
Index
Parts Ordering Information 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Mechanical Parts List 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . .
ii
TMS 143 MCS251 Microcontroller Support Instruction Manual
List of Figures
List of Tables
Table of Contents
Figure 1–1: Placing a microcontroller into a PLCC probe adapter 1–3. .
Figure 1–2: Connecting probes to a PLCC probe adapter 1–4. . . . . . . . .
Figure 1–3: Placing a PLCC probe adapter onto the SUT 1–4. . . . . . . . .
Figure 2–1: MCS251 bus timing 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–2: Hardware display format 2–6. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–1: Dimensions of the probe adapter 3–3. . . . . . . . . . . . . . . . . . . .
Figure 1: MCS251 probe adapter exploded view 6–4. . . . . . . . . . . . . . . . .
Table 1–1: Control group channel assignments 1–6. . . . . . . . . . . . . . . . . .
Table 1–2: Address group channel assignments 1–6. . . . . . . . . . . . . . . . . .
Table 1–3: Clock channel assignments 1–7. . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–4: CPU to Address channels 1–7. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–5: CPU to Control channels 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–6: CPU to Clock channels 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–7: J110 pin-out 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 2–1: Control group symbol table definitions 2–3. . . . . . . . . . . . . . .
Table 2–2: Meaning of special characters in the display 2–5. . . . . . . . . .
Table 2–3: Cycle type definitions 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 2–4: Exception vectors 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–1: Electrical specifications 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–2: Environmental specifications 3–2. . . . . . . . . . . . . . . . . . . . . . .
TMS 143 MCS251 Microcontroller Support Instruction Manual
iii
Table of Contents
iv
TMS 143 MCS251 Microcontroller Support Instruction Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
Only qualified personnel should perform service procedures.
While using this product, you may need to access other parts of the system. Read
the General Safety Summary in other system manuals for warnings and cautions
related to operating the system.
To Avoid Fire or
Personal Injury
Connect and Disconnect Properly . Do not connect or disconnect probes or test
leads while they are connected to a voltage source.
Ground the Product. This product is indirectly grounded through the grounding
conductor of the mainframe power cord. To avoid electric shock, the grounding
conductor must be connected to earth ground. Before making connections to the
input or output terminals of the product, ensure that the product is properly
grounded.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and marking on the product. Consult the product manual for further ratings
information before making connections to the product.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry .
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
TMS 143 MCS251 Microcontroller Support Instruction Manual
v
General Safety Summary
Symbols and Terms
T erms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
T erms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
WARNING
High Voltage
Protective Ground
(Earth) T erminal
CAUTION
Refer to Manual
Double
Insulated
vi
TMS 143 MCS251 Microcontroller Support Instruction Manual
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone. Do not perform internal service or adjustments of this
product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect Power. To avoid electric shock, disconnect the main power by means
of the power cord or, if provided, the power switch.
Use Care When Servicing With Power On. Dangerous voltages or currents may
exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.
To avoid electric shock, do not touch exposed connections.
TMS 143 MCS251 Microcontroller Support Instruction Manual
vii
Service Safety Summary
viii
TMS 143 MCS251 Microcontroller Support Instruction Manual
Preface: Microcontroller Support Documentation
This instruction manual contains specific information about the TMS 143
MCS251 microcontroller support and is part of a set of information on how to
operate this product on compatible Tektronix logic analyzers.
If you are familiar with operating microcontroller supports on the logic analyzer
for which the TMS 143 MCS251 support was purchased, you will probably only
need this instruction manual to set up and run the support.
If you are not familiar with operating microcontroller supports, you will need to
supplement this instruction manual with information on basic operations to set up
and run the support.
Information on basic operations of microcontroller supports is included with each
product. Each logic analyzer has basic information that describes how to perform
tasks common to supports on that platform. This information can be in the form
of online help, an installation manual, or a user manual.
This manual provides detailed information on the following topics:
H Connecting the logic analyzer to the system under test
Manual Conventions
H Setting up the logic analyzer to acquire data from the system under test
H Acquiring and viewing disassembled data
H Using the probe adapter
This manual uses the following conventions:
H In this manual, MCS251 refers to all supported variations of the MCS251
microcontroller unless otherwise noted.
H An asterisk following a signal name indicates an active low signal.
H In the information on basic operations, the term “XXX” or “P54C” used in
field selections and file names must be replaced with MCS251. This is the
name of the microcontroller in field selections and file names you must use
to operate the MCS251 support.
H The term “disassembler” refers to the software that disassembles bus cycles
into instruction mnemonics and cycle types.
TMS 143 MCS251 Microcontroller Support Instruction Manual
ix
Preface: Microcontroller Support Documentation
H The phrase “information on basic operations” refers to online help, an
installation manual, or a basic operations of microcontroller supports user
manual.
H The term “SUT” (system under test) refers to the microcontroller-based
system from which data will be acquired.
H The term “logic analyzer” refers to the Tektronix logic analyzer for which
this product was purchased.
Logic Analyzer Documentation
A description of other documentation available for each type of Tektronix logic
analyzer is located in the corresponding module user manual. The manual set
provides the information necessary to install, operate, maintain, and service the
logic analyzer and associated products.
Contacting Tektronix
Product
Support
Service
Support
For other
information
To write us Tektronix, Inc.
For application-oriented questions about a Tektronix measurement product, call toll free in North America:
1-800-TEK-WIDE (1-800-835-9433 ext. 2400)
6:00 a.m. – 5:00 p.m. Pacific time
Or, contact us by e-mail:
tm_app_supp@tek.com
For product support outside of North America, contact your
local Tektronix distributor or sales office.
Contact your local Tektronix distributor or sales office. Or, visit
our web site for a listing of worldwide service locations.
http://www.tek.com
In North America:
1-800-TEK-WIDE (1-800-835-9433)
An operator will direct your call.
P.O. Box 1000
Wilsonville, OR 97070-1000
x
TMS 143 MCS251 Microcontroller Support Instruction Manual
Getting Started
Getting Started
This chapter contains information on the TMS 143 microcontroller support, and
information on connecting your logic analyzer to your system under test.
Support Description
The TMS 143 microcontroller support package disassembles data from systems
that are based on the Intel MCS251 Family of microprocessors.
The TMS 143 microcontroller support package can acquire and disassemble data
from the TN8XC251SX in a 44-pin PLCC package.
To use this support efficiently, you need to have the items listed in the information on basic operations as well as the 8XC251Sx User’s Manual, Intel.
Logic Analyzer Software Compatibility
To find the version of logic analyzer that this support is compatible with, check
the label of the floppy disk that is supplied with this support.
Logic Analyzer Configuration
For use with a TLA 700 Series the TMS 143 support requires a minimum of
one 68-channel module.
For use with a DAS 9200 Series the TMS 143 support requires a minimum of
one 96-channel module.
Requirements And Restrictions
You should review the general requirements and restrictions of microcontroller
supports in the information on basic operations as they pertain to your SUT.
You should also review electrical, environmental, and mechanical specifications
in the Specifications chapter in this manual as they pertain to your system under
test, as well as the following descriptions of other MCS251 support requirements
and restrictions.
Opcode Fetch/Read Identification. There is no signal that differentiates between an
opcode fetch and a read; therefore:
TMS 143 MCS251 Microcontroller Support Instruction Manual
1–1
Getting Started
H In order for the disassembly to become synchronized, the first fetch cycle is
displayed as a ( MEM READ ), you need to mark it as an “Opcode”.
H In order for the disassembly to become synchronized when the control flow
occurs and there is an address break, the first two bytes are decoded as a
( MEM READ ). Therefore you need to mark the first byte as an “Opcode”.
System Clock Rate. The TMS 143 support can acquire data from the MCS251
microcontroller at speeds of up to 16 MHz
Hardware Reset. If a hardware reset occurs in your MCS251 system during an
acquisition, the disassembler might acquire an invalid sample.
Disabling The Instruction Cache. To disassemble acquired data, you must disable
the internal instruction cache. Disabling the cache makes all instruction
prefetches visible on the bus so that they can be acquired and disassembled.
Functionality Not Supported
Variable WAIT State. The TMS 143 support does not support the variable WAIT
state configuration.
Connecting To A System Under Test
Before you connect to your SUT, you must connect the probes to the module.
Your SUT must also have a minimum amount of clear space surrounding the
microcontroller to accommodate the probe adapter. Refer to the Specifications
chapter in this manual for the required clearances.
1
.
1–2
With A PLCC Probe
Adapter
The general requirements and restrictions of microcontroller supports in the
information on basic operations shows the vertical dimensions of a channel or
clock probe connected to square pins on a circuit board.
To connect your logic analyzer to your SUT using a PLCC probe adapter, follow
these steps:
1. Turn off power to your SUT. It is not necessary to turn off the logic analyzer.
1
Specification at time of printing. Contact your Tektronix sales representative for
current information on the fastest devices supported.
TMS 143 MCS251 Microcontroller Support Instruction Manual
Getting Started
CAUTION. Static discharge can damage the microcontroller, the probe adapter,
the probes, or the module. To prevent static damage, handle all of the above only
in a static-free environment.
Always wear a grounding wrist strap or similar device while handling the
microcontroller and probe adapter.
2. To discharge your stored static electricity, touch the ground connector located
on the back of the logic analyzer. Then, touch any of the ground pins of the
probe adapter to discharge stored static electricity from the probe adapter.
3. Place the probe adapter onto the antistatic shipping foam to support the probe
as shown in Figure 1–1. This prevents the circuit board from flexing.
4. Remove the microcontroller from your SUT.
5. Line up the pin 1 indicator on the microcontroller with pin 1 of the PLCC
socket on the probe adapter.
CAUTION. Failure to correctly place the microcontroller into the probe adapter
may permanently damage electrical components once power is applied.
6. Place the microcontroller into the probe adapter as shown in Figure 1–1.
Microcontroller
Probe adapter
Antistatic Foam
Bevel at both
corners
Figure 1–1: Placing a microcontroller into a PLCC probe adapter
7. Connect the channel and clock probes to the probe adapter as shown in
Figure 1–2. Match the channel groups and numbers on the probe labels to the
corresponding pins on the probe adapter. Match the ground pins on the
probes to the corresponding pins on the probe adapter.
TMS 143 MCS251 Microcontroller Support Instruction Manual
1–3
Getting Started
Channel probe
Antistatic foam
Clock probe
Probe adapter
Figure 1–2: Connecting probes to a PLCC probe adapter
8. Place the probe adapter onto the SUT as shown in Figure 1–3.
Without A Probe Adapter
1–4
Bevel at both corners
SUT socket
Figure 1–3: Placing a PLCC probe adapter onto the SUT
You can use channel probes, clock probes, and leadsets with a commercial test
clip (or adapter) to make connections between the logic analyzer and your SUT.
To connect the probes to MCS251 signals in the SUT using a test clip, follow
these steps:
TMS 143 MCS251 Microcontroller Support Instruction Manual
Getting Started
1. Turn off power to your SUT. It is not necessary to turn off power to the logic
analyzer.
CAUTION. Static discharge can damage the microcontroller, the probes, or the
module. To prevent static damage, handle all of the above only in a static-free
environment.
Always wear a grounding wrist strap or similar device while handling the
microcontroller.
2. To discharge your stored static electricity, touch the ground connector located
on the back of the logic analyzer. If you are using a test clip, touch any of the
ground pins on the clip to discharge stored static electricity from it.
CAUTION. Failure to place the SUT on a horizontal surface before connecting the
test clip might permanently damage the pins on the microcontroller.
Channel Assignments
3. Place the SUT on a horizontal static-free surface.
4. Use Tables 1–1 through 1–2 to connect the channel probes to MCS251 signal
pins on the test clip or in the SUT. Use Table 1–3 to connect the clock probes
and the MCS251 signals.
Use leadsets to connect at least one ground lead from each channel probe and
the ground lead from each clock probe to ground pins on your test clip.
5. Align pin 1 or A1 of your test clip with the corresponding pin 1 or A1 of the
MCS251 microcontroller in your SUT and attach the clip.
The following channel assignment tables show the probe section and channel
assignments, and the signal to which each channel connects.
Channel assignments shown in Table 1–2 through Table 1–3 use the following
conventions:
H All signals are required by the support unless indicated otherwise.
H Channels are shown starting with the most significant bit (MSB) descending
to the least significant bit (LSB).
H Channel group assignments are for all modules unless otherwise noted.
H An tilde asterisk following a signal name indicates an active low signal.
TMS 143 MCS251 Microcontroller Support Instruction Manual
1–5
Getting Started
By default the Control group is displayed symbolically.
T able 1–1: Control group channel assignments
Bit
order
3 C2:3 RD*
2 C2:2 WR*
1 C2:1 PSEN*
0 C2:0 ALE
Section:channel MCS251 signal name
The Data bus is multiplexed with the Address bus. Channels D1:7-0 and D0:7-0
do not need to be connected. By default this group is displayed in hexadecimal.
By default the Address group is displayed in hexadecimal.
T able 1–2: Address group channel assignments
Bit
order
17 A2:7 A17
16 A2:6 A16
15 A1:7 A15
14 A1:6 A14
13 A1:5 A13
12 A1:4 A12
11 A1:3 A11
10 A1:2 A10
9 A1:1 A9
8 A1:0 A8
7 A0:7 AD7
6 A0:6 AD6
5 A0:5 AD5
4 A0:4 AD4
3 A0:3 AD3
2 A0:2 AD2
1 A0:1 AD1
0 A0:0 AD0
Section:channel MCS251 signal name
1–6
TMS 143 MCS251 Microcontroller Support Instruction Manual
Table 1–3 lists the probe section and channel assignments for the clock probes.
The clock probes are not part of any group.
T able 1–3: Clock channel assignments
Section:channel MCS251 signal name
CLK:2 WAIT*
CLK:1 RST
CLK:0 XT AL1=
These channels are used only to clock in data; they are not acquired or displayed.
To acquire data from any of the signals shown in Table 1–3, you must connect
another channel probe to the signal, a technique called double probing.
CPU To Channel Probe Connections
Getting Started
To probe the microprocessor you will need to make connections between the
CPU and the channel probes. Table 1–4 through Table 1–6 list the CPU pin to
channel probe pin connections. Please pay close attention to the caution below.
CAUTION. To protect the CPU and the inputs of the module, a 180 resistor
should be connected in series between each pin of the CPU and each pin of the
channel probe connector. The resistor must be no farther away from the CPU
then 1/2-inch.
T able 1–4: CPU to Address channels
MCS251
MCS251
LA channel
A3:7 P1.7 9
A3:6 P1.6 8
A3:5 P1.5 7
A3:4 P1.4 6
A3:3 P1.3 5
A3:2 P1.2 4
A3:1 P1.1 3
A3:0 P1.0 2
A2:7 A17 9
A2:6 A16 19
A2:5 XTAL1 21
signal name
44-pin PLCC
pin number
TMS 143 MCS251 Microcontroller Support Instruction Manual
1–7
Getting Started
T able 1–4: CPU to Address channels (cont.)
MCS251
MCS251
LA channel
A2:4 XTAL2 20
A2:3 EA* 35
A2:2 T0 16
A2:1 T1 17
A2:0 NC ––
A0:0 AD0 43
A0:1 AD1 42
A0:2 AD2 41
A0:3 AD3 40
A0:4 AD4 39
A0:5 AD5 38
A0:6 AD6 37
A0:7 AD7 36
A1:0 A8 24
A1:1 A9 25
A1:2 A10 26
A1:3 A11 27
A1:4 A12 28
A1:5 A13 29
A1:6 A14 30
A1:7 A15 31
signal name
44-pin PLCC
pin number
1–8
T able 1–5: CPU to Control channels
MCS251
LA channel
C2:7 RXD 11
C2:6 TXD 13
C2:5 INT0* 14
C2:4 INT1* 15
C2:3 RD* 19
C2:2 WR* 18
signal name
TMS 143 MCS251 Microcontroller Support Instruction Manual
MCS251
44-pin PLCC
pin number
T able 1–5: CPU to Control channels (cont.)
MCS251
MCS251
LA channel
C2:1 PSEN* 32
C2:0 ALE 33
signal name
44-pin PLCC
pin number
T able 1–6: CPU to Clock channels
MCS251
MCS251
LA channel
Clock:0 XT AL1 = 21
Clock:1
Clock:2
= Signal is double probed
signal name
RST [
WAIT* [
44-pin PLCC
pin number
10
8
Getting Started
[ Signal used as a qualifier
Table 1–7 lists the Pin-out of connector J110. Connector J110 can be used for
oscilloscope probe connections of the MCS251 microcontroller signals.
T able 1–7: J110 pin-out
MCS251
pin number
1 Vcc
2 AD0
3 AD1
4 AD2
5 AD3
6 AD4
7 AD5
8 AD6
9 AD7
10 EA*
11 ALE
12 PSEN*
13 A15
14 A14
MCS251
signal name
TMS 143 MCS251 Microcontroller Support Instruction Manual
1–9
Getting Started
T able 1–7: J110 pin-out (cont.)
MCS251
pin number
15 A13
16 A12
17 A11
18 A10
19 A9
20 A8
21 Vss
22 XTAL1
23 XTAL2
24 A16/RD*
25 WR*
26 T1
27 T0
28 INT1*
29 INT2*
30 TXD*
31 RXD*
32 RST
33 P1.7/A17
34 P1.6/WAIT*
35 P1.5
36 P1.4
37 P1.3
38 P1.2
39 P1.1
40 P1.0
MCS251
signal name
1–10
TMS 143 MCS251 Microcontroller Support Instruction Manual
Operating Basics
Setting Up the Support
Information in this section is specific to the operations and functions of the
TMS 143 MCS251 support on any Tektronix logic analyzer for which it can be
purchased.
Before you acquire and disassemble data, you need to load the support and
specify setups for clocking and triggering as described in the information on
basic operations. The support provides default values for each of these setups,
but you can change them as needed.
Channel Group Definitions
The software automatically defines channel groups for the support. The channel
groups for the MCS251 support are: Address, Data, Control, and Clock. If you
want to know which signal is in which group, refer to the channel assignment
tables beginning on page 1–5.
How Data Is Acquired
Clocking Options
Custom Clocking
This part of this chapter explains how the module acquires MCS251 signals
using the TMS 143 software and probe adapter. This part also provides additional
information on microcontroller signals accessible on or not accessible on the
probe adapter, and on extra probe channels available for you to use for additional
connections.
The TMS 143 support offers a microcontroller-specific clocking mode for the
MCS251. This clocking mode is “Custom” and is the default selection whenever
you load the support.
Disassembly will not be correct with the Internal or External clocking modes.
Information on basic operations describes how to use these clock selections for
general purpose analysis.
A special clocking program is loaded to the module every time you load the
support. This special clocking is called Custom.
With Custom clocking, the module logs in signals from multiple groups of
channels at different times as they become valid on the MCS251 bus. The
TMS 143 MCS251 Microcontroller Support Instruction Manual
2–1
Setting Up the Support
XTAL1
ALE
RD#/PSEN#
module then sends all the logged-in signals to the trigger machine and to the
memory of the module for storage.
In Custom clocking, the module clocking state machine generates one master
sample for each microcontroller bus cycle, no matter how many clock cycles are
contained in the bus cycle.
Figure 2–1 shows the sample points and the master sample point.
P0
P2/A16/A17
Figure 2–1: MCS251 bus timing
A7:0
Sample point 1
D7:0
Master sample point
The Setup menu for the MCS251 has the additional selection “Custom” defined
for the Clocking mode field. “Custom” is the default selection whenever the
MCS251 support is loaded.
When “Custom” is selected, the Custom Clocking Options menu will have the
sub-title “MCS251 Microprocessor Clocking Support” added, and the clocking
options will be displayed as shown below:
NO OF SW_WAIT: 0 (default setting)
1
2
3
2–2
MODE SELECT: NON PAGE (default setting)
PAGE
TMS 143 MCS251 Microcontroller Support Instruction Manual
Symbols
Setting Up the Support
The TMS 143 support supplies one symbol table file. The MCS251_Ctrl file
replaces specific Control channel group values with symbolic values when
Symbolic is the radix for the channel group.
Symbol tables are generally not for use in timing or MCS251_T support
disassembly.
Table 2–1 shows the name, bit pattern, and a description for the symbols in the
file MCS251_Ctrl, the Control channel group symbol table.
T able 2–1: Control group symbol table definitions
Control group value
RD*
WR*
Symbol
WRITE
READ
FETCH
PSEN*
ALE
Description
Write to memory
Read from memory
Fetch
Information on basic operations describes how to use symbolic values for
triggering and for displaying other channel groups symbolically, such as the
Address channel group.
TMS 143 MCS251 Microcontroller Support Instruction Manual
2–3
Setting Up the Support
2–4
TMS 143 MCS251 Microcontroller Support Instruction Manual
Acquiring and Viewing Disassembled Data
Acquiring Data
Once you load the MCS251 support, choose a clocking mode and specify the
trigger, you are ready to acquire and disassemble
If you have any problems acquiring data, refer to information on basic operations
in your online help or Appendix A: Error Messages and Disassembly Problems in
the basic operations user manual.
Viewing Disassembled Data
You can view disassembled data in four display formats: Hardware, Software,
Control Flow, and Subroutine. The information on basic operations describes
how to select the disassembly display formats.
NOTE. Selections in the Disassembly property page (the Disassembly Format
Definition overlay) must be set correctly for your acquired data to be disassembled correctly. Refer to Changing How Data is Displayed on page 2–8.
data.
The default display format shows the Address, Data, and Control channel group
values for each sample of acquired data.
The disassembler displays special characters and strings in the instruction
mnemonics to indicate significant events. Table 2–2 lists these special characters
and strings, and gives a description of what they represent.
T able 2–2: Meaning of special characters in the display
Character or string displayed Description
# Indicates an immediate value
> Indicates there is insufficient room on the screen to show all
available data
>> On the TLA 700
m On the DAS 9200
t Indicates the number shown is in decimal, such as #12t
**** Indicates there is insufficient data available for complete
The instruction was manually marked as a program fetch
disassembly of the instruction; the number of asterisks
indicates the width of the data that is unavailable. Each two
asterisks represent one byte.
TMS 143 MCS251 Microcontroller Support Instruction Manual
2–5
Acquiring and Viewing Disassembled Data
Hardware Display Format
In Hardware display format, the disassembler displays certain cycle type labels in
parentheses. Table 2–3 shows these cycle type labels and gives a definition of the
cycle they represent. Reads to interrupt and exception vectors will be labeled
with the vector name.
T able 2–3: Cycle type definitions
Cycle type Definition
( READ )
( WRITE )
( MEM READ ) w
( RESET LOCATION )
( UNKNOWN )
( FLUSH ) w
( EXTENSION ) w
( ILLEGAL INST ) w
Read from memory
Write to memory
Code fetch
The processor has reset and started fetching from location “----”
The combination of control bits is unexpected and/or unrecognized
This cycle was fetched but not executed
This cycle is an extension to a preceding instruction opcode
The data could not be decoded into a valid instruction
w Computed cycle types
Figure 2–2 shows an example of the Hardware display.
1 2 3 4 5
Sample Address Pg_Data N_Pg_Dta Mnemonics Control
--------------------------------------------------------------------------------
863 32324 2D 24 ADD A,#26 FETCH
864 32326 D2 26 ( EXTENSION ) FETCH
865 32327 E2 27 ADD A,@R1 FETCH
866 32328 20 28 ADD A,R0 FETCH
867 32329 E2 29 ADD A,R1 FETCH
868 3232A 02 2A ADD A,R2 FETCH
869 3232B 2D 2B ADD A,R3 FETCH
870 3232D A9 2D ADD A,R5 FETCH
871 3232E 23 2E ADD A,R6 FETCH
872 3232F 74 2F ADD A,R7 FETCH
873 32330 04 30 JNB 31,32365 FETCH
874 32331 7E 31 ( EXTENSION ) FETCH
875 32332 83 32 ( EXTENSION ) FETCH
876 32333 00 33 RLC A FETCH
877 32334 74 34 ADDC A,#35 FETCH
878 32335 75 35 ( EXTENSION ) FETCH
879 32336 E0 36 ADDC A,@R0 FETCH
880 32337 56 37 ADDC A,@R1 FETCH
881 32338 A9 38 ADDC A,R0 FETCH
882 32339 33 39 ADDC A,R1 FETCH
883 3233A 74 3A ADDC A,R2 FETCH
884 3233B 04 3B ADDC A,R3 FETCH
Figure 2–2: Hardware display format
6
2–6
TMS 143 MCS251 Microcontroller Support Instruction Manual
Acquiring and Viewing Disassembled Data
1
Sample Column. Lists the memory locations for the acquired data.
2
Address Group. Lists data from channels connected to the MCS251
Address bus.
3
Pg_Data. Lists data from channels connected to the Pg_Data MCS251 Data
bus.
4
N_Pg_Dta. Lists data from channels connected to the N_Pg_Dta MCS251
Data bus.
5
Mnemonic Column. Lists the disassembled instructions and cycle types.
6
Control. Lists the Control function.
Software Display Format
Control Flow Display
Format
The Software display format shows only the first fetch of executed instructions.
Flushed cycles and extensions are not shown, even though they are part of the
executed instruction. Read extensions will be used to disassemble the instruction,
but will not be displayed as a separate cycle in the Software display format. Data
reads and writes are not displayed.
The Control Flow display format shows only the first fetch of instructions that
change the flow of control.
Instructions that unconditionally generate a change in the flow of control in the
MCS251 microcontroller are as follows:
JMP AJMP SJMP LJMP
EJMP ACALL ECALL LCALL
RET ERET
Instructions that conditionally generate a change in the flow of control in the
MCS251 microcontroller are as follows:
JC JNC JB JNB
JZ JNZ JE JNE
JG JLE JSL JSLE
JSG JSGE CJNE DJNZ
Subroutine Display
Format
The Subroutine display format shows only the first fetch of subroutine call and
return instructions. It will display conditional subroutine calls if they are
considered to be taken.
Instructions that unconditionally generate a subroutine call or a return in the
MCS251 microcontroller are as follows:
ACALL ECALL LCALL
RET ERET RETI
TMS 143 MCS251 Microcontroller Support Instruction Manual
2–7
Acquiring and Viewing Disassembled Data
Changing How Data Is Displayed
There are common fields and features that allow you to further modify displayed
data to suit your needs. You can make common and optional display selections in
the Disassembly property page (the Disassembly Format Definition overlay).
You can make selections unique to the MCS251 support to do the following
tasks:
H Change how data is displayed across all display formats
H Change the interpretation of disassembled cycles
H Display exception vectors
There are no optional fields for this support package. Refer to the information on
basic operations for descriptions of common fields.
Cycle Marking
Optional Display
Selections
The support allows marking of instructional fetch/read cycles, including read
extensions and flush cycles. If the cursor is placed on any other cycle type, the
software will return a warning that: “An Opcode Mark cannot be placed at the
selected sample.” The following marks are available for instructional cycles:
H Opcode marks the current sequence as an opcode fetch cycle
H Extension marks the current sequence as an extension cycle
H Read marks the current sequence as a read cycle
H Flush marks the current sequence as flush cycle
Information on basic operations contains more details on marking cycles.
You can make optional selections for disassembled
common selections (described in the information on basic operations), the
MCS251 can be operated in two different modes. Dependent on the mode
selected, the data will be received at different ports. The two selections are:
Mode Select: Non Page (default selection)
Page
The bit pattern generated by the MCS251 depends whether the MCS251 is in
Binary or Source mode. The available selections are:
data. In addition to the
2–8
Bin_Src: Binary (default selection)
Source
TMS 143 MCS251 Microcontroller Support Instruction Manual
Acquiring and Viewing Disassembled Data
Displaying Exception
Vectors
The TMS 143 will label all exception vector reads using the labels listed in
Table 2–4. Refer to the 8XC251Sx Microprocessor User’s manual (listed on
page 1–1) for an explanation of these labels. These exception labels will be
displayed in parentheses in the disassembly window.
The exception vector table must reside in external memory to be visible to the
disassembler software.
Table 2–4 lists the MCS251 exception vectors.
T able 2–4: Exception vectors
Location in Interrupt
Exception
number
0 0x0033
1 0x002B
2 0x0023
3 0x001B
4 0x0013
5 0x000B
6 0x0003
Vector (IV) table
(in hexadecimal)
Displayed exception name
( PCA INTERRUPT )
( TIMER 2 INTERRUPT )
( SERIAL PORT INTERRUPT )
( TIMER 1 INTERRUPT )
( INT1 INTERRUPT )
( TIMER 0 INTERRUPT )
( INT0 INTERRUPT )
TMS 143 MCS251 Microcontroller Support Instruction Manual
2–9
Acquiring and Viewing Disassembled Data
2–10
TMS 143 MCS251 Microcontroller Support Instruction Manual
Specifications
Specifications
This chapter contains information regarding the specifications of the support.
Probe Adapter Description
The probe adapter is nonintrusive hardware that allows the logic analyzer to
acquire data from a microcontroller in its own operating environment with little
effect on that system. Information on basic operations contains a figure showing
the logic analyzer connected to a typical probe adapter. Refer to that figure while
reading the following description.
The probe adapter consists of a circuit board and a socket for a MCS251
microcontroller. The probe adapter connects to the microcontroller on your SUT.
Signals from the microcontroller-based system flow from the probe adapter to the
channel groups and through the probe signal leads to the logic analyzer module.
The probe adapter accommodates the Intel MCS251 microcontroller in a 44-pin
PLCC package, or a 40-pin DIP package.
Specification Tables
These specifications are for a probe adapter connected between a compatible
Tektronix logic analyzer and a SUT.
Table 3–1 shows the electrical requirements the SUT must produce for the
support to acquire correct data. Table 3–2 shows the environmental specifications.
Figure 3–1 shows the dimensions of the probe adapter.
T able 3–1: Electrical specifications
Characteristics Requirements
SUT clock
Clock rate 16 MHz
Minimum setup time required
TLA 700 2.5 ns
DAS 9200 5 ns
TMS 143 MCS251 Microcontroller Support Instruction Manual
3–1
Specifications
T able 3–1: Electrical specifications (cont.)
Characteristics Requirements
Minimum hold time required
TLA 700 0 ns
DAS 9200 0 ns
Specification
Measured typical SUT signal loading AC load DC load
XT AL1 19.6 pF 2 podlets
A17 14.4 pF 2 podlets
A16 17.0 pF 2 podlets
All other signals < 18 pF 1 podlet
Mictor Loading
TLA 700 podlet load
DAS 9200 podlet load
in parallel with 2 pF
20 K
100 K in parallel with 10 pF
T able 3–2: Environmental specifications*
Characteristic Description
Temperature
Maximum operating
Minimum operating 0° C (+32° F)
Non-operating –55° C to +75° C (–67° to +167° F)
Humidity 10 to 95% relative humidity
Altitude
Operating 4.5 km (15,000 ft) maximum
Non-operating 15 km (50,000 ft) maximum
Electrostatic immunity The probe adapter is static sensitive
* Designed to meet Tektronix standard 062-2847-00 class 5
[
Not to exceed MCS251 microcontroller thermal considerations. Forced air cooling
might be required across the CPU.
+50° C (+122° F) [
3–2
TMS 143 MCS251 Microcontroller Support Instruction Manual
70 mm
(2.750 in)
Specifications
62 mm
(2.450 in)
Figure 3–1: Dimensions of the probe adapter
TMS 143 MCS251 Microcontroller Support Instruction Manual
3–3
Specifications
3–4
TMS 143 MCS251 Microcontroller Support Instruction Manual
WARNING
The following servicing instructions are for use only by qualified personnel. To
avoid injury, do not perform any servicing other than that stated in the operating
instructions unless you are qualified to do so. Refer to all Safety Summaries
before performing any service.
Maintenance
Maintenance
Replacing Signal Leads
Information on basic operations describes how to replace signal leads
(individual channel and clock probes).
Replacing Protective Sockets
Information on basic operations describes how to replace protective sockets.
TMS 143 MCS251 Microcontroller Support Instruction Manual
4–1
Maintenance
4–2
TMS 143 MCS251 Microcontroller Support Instruction Manual
Replaceable Electrical Parts
Replaceable Electrical Parts
This chapter contains a list of the replaceable electrical components for the
TMS 143 MCS251 microcontroller support.
Parts Ordering Information
Replacement parts are available through your local Tektronix field office or
representative.
Changes to Tektronix products are sometimes made to accommodate improved
components as they become available and to give you the benefit of the latest
improvements. Therefore, when ordering parts, it is important to include the
following information in your order:
H Part number
H Instrument type or model number
H Instrument serial number
H Instrument modification number, if applicable
If you order a part that has been replaced with a different or improved part, your
local Tektronix field office or representative will contact you concerning any
change in part number.
Change information, if any, is located at the rear of this manual.
Using the Replaceable Electrical Parts List
The tabular information in the Replaceable Electrical Parts List is arranged for
quick retrieval. Understanding the structure and features of the list will help you
find all of the information you need for ordering replacement parts. The
following table describes each column of the electrical parts list.
TMS 143 MCS251 Microcontroller Support Instruction Manual
5–1
Replaceable Electrical Parts
Parts list column descriptions
Column Column name Description
1 Component number The component number appears on diagrams and circuit board illustrations, located in the diagrams
section. Assembly numbers are clearly marked on each diagram and circuit board illustration in the
Diagrams section, and on the mechanical exploded views in the Replaceable Mechanical Parts list
section. The component number is obtained by adding the assembly number prefix to the circuit
number (see Component Number illustration following this table).
The electrical parts list is arranged by assemblies in numerical sequence (A1, with its subassemblies
and parts, precedes A2, with its subassemblies and parts).
Chassis-mounted parts have no assembly number prefix, and they are located at the end of the
electrical parts list.
2 Tektronix part number Use this part number when ordering replacement parts from Tektronix.
3 and 4 Serial number Column three indicates the serial number at which the part was first effective. Column four indicates
the serial number at which the part was discontinued. No entry indicates the part is good for all serial
numbers.
5 Name & description An item name is separated from the description by a colon (:). Because of space limitations, an item
name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook H6-1 for
further item name identification.
6 Mfr. code This indicates the code number of the actual manufacturer of the part.
7 Mfr. part number This indicates the actual manufacturer’s or vendor’s part number.
Abbreviations
Component Number
List of Assemblies
Chassis Parts
Mfr. Code to Manufacturer
Cross Index
Abbreviations conform to American National Standard ANSI Y1.1–1972.
Component number
A23A2R1234 A23 R1234
Assembly number Circuit number
Read: Resistor 1234 (of Subassembly 2) of Assembly 23
A2
Subassembly number
(optional)
A list of assemblies is located at the beginning of the electrical parts list. The
assemblies are listed in numerical order. When a part’s complete component
number is known, this list will identify the assembly in which the part is located.
Chassis-mounted parts and cable assemblies are located at the end of the
Replaceable Electrical Parts List.
The table titled Manufacturers Cross Index shows codes, names, and addresses of
manufacturers or vendors of components listed in the parts list.
5–2
TMS 143 MCS251 Microcontroller Support Instruction Manual
Replaceable Electrical Parts
Manufacturers cross index
Mfr.
code
00779 AMP INC. CUSTOMER SERVICE DEPT
22526 BERG ELECTRONICS INC 825 OLD TRAIL ROAD ETTERS, PA 17319
63058 BERG ELECTRONICS INC. MCKENZIE SOCKET DIV
80009 TEKTRONIX INC 14150 SW KARL BRAUN DR
Manufacturer Address City , state, zip code
PO BOX 3608
910 PAGE AVE
PO BOX 500
HARRISBURG, PA 17105–3608
FREMONT , CA 94538–7340
BEAVERT ON, OR 97077–0001
TMS 143 MCS251 Microcontroller Support Instruction Manual
5–3
Replaceable Electrical Parts
Replaceable electrical parts list
Component
number
A01 010–0617–00 PROBE ADAPTER: PLCC–44, SOCKETED, MCS251SX, TMS143
A01 131–5267–00 CONN, HDR: PCB, MALE, STR, 2 X 40, 0.1 CTR, 0.235 MLG X
A01 131–5489–00 CONN, ADPT: SMD, PLCC, MALE, STR, 44 POS, 0.05 CTR,
A01 136–5012–00 SOCKET, PLCC: SMD, 44 POS, 0.05 CTR, 0.186 H, TIN, W/PLZ
A01 671–4190–00 CIRCUIT BD ASSY: PLCC–44, SOCKETED, 8XC251SX,
Tektronix
part number
Serial no.
effective
Serial no.
discont’d
Name & description
OPT 01
0.110 TAIL, 30GOLD, HIGH TEMP,
0.268H, PLCC MALE TO SMD PADS ON 0.05 CTR,
POSTS, TUBE PACK,
389–2454–00 WIRED, TMS143 OPT 01
Mfr.
code
80009 010–0617–00
00779 104326–4
63058 ADP44PLCC–SM
22526 69802–044
80009 671–4190–00
Mfr. part number
5–4
TMS 143 MCS251 Microcontroller Support Instruction Manual
Replaceable Mechanical Parts
Replaceable Mechanical Parts
This chapter contains a list of the replaceable mechanical components for the
TMS 143 MCS251 microcontroller support.
Parts Ordering Information
Replacement parts are available through your local Tektronix field office or
representative.
Changes to Tektronix products are sometimes made to accommodate improved
components as they become available and to give you the benefit of the latest
improvements. Therefore, when ordering parts, it is important to include the
following information in your order:
H Part number
H Instrument type or model number
H Instrument serial number
H Instrument modification number, if applicable
If you order a part that has been replaced with a different or improved part, your
local Tektronix field office or representative will contact you concerning any
change in part number.
Change information, if any, is located at the rear of this manual.
Using the Replaceable Mechanical Parts List
The tabular information in the Replaceable Mechanical Parts List is arranged for
quick retrieval. Understanding the structure and features of the list will help you
find all of the information you need for ordering replacement parts. The
following table describes the content of each column in the parts list.
TMS 143 MCS251 Microcontroller Support Instruction Manual
6–1
Replaceable Mechanical Parts
Parts list column descriptions
Column Column name Description
1 Figure & index number Items in this section are referenced by figure and index numbers to the exploded view illustrations
that follow.
2 Tektronix part number Use this part number when ordering replacement parts from Tektronix.
3 and 4 Serial number Column three indicates the serial number at which the part was first effective. Column four
indicates the serial number at which the part was discontinued. No entries indicates the part is
good for all serial numbers.
5 Qty This indicates the quantity of parts used.
6 Name & description An item name is separated from the description by a colon (:). Because of space limitations, an
item name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook H6-1
for further item name identification.
7 Mfr. code This indicates the code of the actual manufacturer of the part.
8 Mfr. part number This indicates the actual manufacturer’s or vendor’s part number.
Abbreviations
Chassis Parts
Abbreviations conform to American National Standard ANSI Y1.1–1972.
Chassis-mounted parts and cable assemblies are located at the end of the
Replaceable Electrical Parts List.
Mfr. Code to Manufacturer
Cross Index
The table titled Manufacturers Cross Index shows codes, names, and addresses of
manufacturers or vendors of components listed in the parts list.
Manufacturers cross index
Mfr.
code
22526 BERG ELECTRONICS INC 825 OLD TRAIL ROAD ETTERS, PA 17319
63058 BERG ELECTRONICS INC. MCKENZIE SOCKET DIV
80009 TEKTRONIX INC 14150 SW KARL BRAUN DR
Manufacturer Address City , state, zip code
910 PAGE AVE
PO BOX 500
FREMONT , CA 94538–7340
BEAVERT ON OR 97077–0001
6–2
TMS 143 MCS251 Microcontroller Support Instruction Manual
Replaceable Mechanical Parts
Replaceable mechanical parts list
Fig. &
index
number
1–0 671–4190–00 1 CIRCUIT BD ASSY: PLCC–44, SOCKETED, 8XC251SX,
–1 136–5012–00 1 SOCKET, PLCC: SMD, 44 POS, 0.05 CTR, 0.186 H, TIN, W/PLZ
–2 131–5267–00 1 CONN, HDR: PCB, MALE, STR, 2 X 40, 0.1 CTR,
Tektronix part
number
070–9803–00 1 MANUAL, TECH: TLA 700 SERIES MICROPROCESSOR
070–9802–00 1 MANUAL, TECH: BASIC OPS MICROPROCESSOR SUPPORT
070–9912–00 1 MANUAL, TECH: INSTRUCTION,
Serial no.
effective
Serial no.
discont’d
Qty Name & description
389–2454–00 WIRED, TMS143 OPT 01
POSTS, TUBE PACK,
0.235 MLG X 0.110 TAIL, 30GOLD
(J110, J120, J130, J230, J320, J330)
STANDARD ACCESSORIES
SUPPORT INSTALLATION
ON DAS/TLA 500 SERIES LOGIC ANALYZERS
MCS251, DISSASEMBLER, TMS 143
Mfr.
code
80009 671–4190–00
22526 69802–044
80009 131526700
80009 070–9803–00
80009 070–9802–00
80009 070–9912–00
Mfr. part number
TMS 143 MCS251 Microcontroller Support Instruction Manual
6–3
Replaceable Mechanical Parts
1
2
6–4
Figure 1: MCS251 probe adapter exploded view
TMS 143 MCS251 Microcontroller Support Instruction Manual
Index
Index
Numbers
8CX251SX, definition, ix
A
about this manual set, ix
acquiring data, 2–5
Address group
channel assignments, 1–6
display column, 2–7
application, logic analyzer configuration, 1–1
B
basic operations, where to find information, ix
bus cycles, displayed cycle types, 2–6
bus timing, 2–2
C
channel assignments
Address group, 1–6
clocks, 1–7
Control group, 1–6
Data group, 1–6
specifications, 1–5
channel groups, 2–1
channel probe to CPU connections, 1–7
clock channel assignments, 1–7
clock rate, 1–2
clocking, Custom, 2–1
how data is acquired, 2–2
clocking options
how data is acquired, 2–2
MODE SELECT, 2–2
NO OF SW_WAIT, 2–2
component locator diagrams, 5–5
connections
CPU to channel probe, 1–7
no probe adapter, channel probes, 1–5
probe adapter to SUT, PLCC, 1–2
without a probe adapter, 1–4
contacting T ektronix, x
Control Flow display format, 2–7
Control function, 2–7
Control group
channel assignments, 1–6
symbol table, 2–3
CPU to channel probe connections, 1–7
Custom clocking, 2–1
how data is acquired, 2–2
cycle marking, 2–8
definition of, 2–8
cycle types, 2–6
D
data
acquiring, 2–5
disassembly formats
Control Flow, 2–7
Hardware, 2–6
Software, 2–7
Subroutine, 2–7
how data is acquired, 2–1
clocking options, 2–2
data display , changing, 2–8
Data group
channel assignments, 1–6
display column, 2–7
definitions
8CX251SX, ix
disassembler, ix
information on basic operations, x
logic analyzer, x
MCS251, ix
P54C, ix
SUT, x
XXX, ix
diagrams and circuit board illustrations, 5–5–5–6
dimensions, probe adapter, 3–3
disassembled data
cycle type definitions, 2–6
viewing, 2–5
disassembler
definition, ix
logic analyzer configuration, 1–1
setup, 2–1
Disassembly Format Definition overlay, 2–8
Disassembly property page, 2–8
display formats
Control Flow, 2–7
Hardware, 2–6
Software, 2–7
special characters, 2–5
Subroutine, 2–7
TMS 143 MCS251 Microcontroller Support Instruction Manual
Index–1
Index
E
electrical specifications, 3–1
environmental specifications, 3–2
exception vectors, displaying, 2–9
F
functionality not supported, 1–2
variable WAIT state, 1–2
H
Hardware display format, 2–6
cycle type definitions, 2–6
I
information on basic operations, definition, x
installing hardware. See connections
J
J110 pin-out, 1–9
L
O
optional display selections
Bin_Src, 2–8
Mode Select, 2–8
oscilloscope connection pins, 1–9
P
P54C, definition, ix
package types supported, microprocessor, 1–1
PLCC, connections, probe adapter to SUT, 1–2
probe adapter
clearance, 1–2
dimensions, 3–3
connecting leads, 1–3
hardware description, 3–1
not using one, 1–4
placing the microprocessor in, 1–3
R
replacing protective sockets, 4–1
replacing signal leads, 4–1
Reset, SUT hardware, 1–2
restrictions, 1–1
without a probe adapter, 1–4
leads (podlets). See connections
logic analyzer
configuration for disassembler, 1–1
configuration for the application, 1–1
with a DAS 9200 series, 1–1
with a TLA 700 series, 1–1
definition, x
software compatibility, 1–1
M
maintenance
replacing protective sockets, 4–1
replacing signal leads, 4–1
manual
conventions, ix
how to use the set, ix
mark Opcode function, 2–8
MCS251, definition, ix
microprocessor
package types supported, 1–1
specific clocking and how data is acquired, 2–2
Mnemonic display column, 2–7
S
setups, disassembler, 2–1
signals, active low sign, ix
software compatibility, logic analyzer, 1–1
Software display format, 2–7
special characters displayed, 2–5
specifications, 3–1
channel assignments, 1–5
electrical, 3–1
environmental, 3–2
mechanical (dimensions), 3–3
probe adapter, 3–3
Subroutine display format, 2–7
support setup, 2–1
SUT, definition, x
SUT hardware Reset, 1–2
symbol table, Control channel group, 2–3
T
T ektronix, contacting, x
terminology, ix
Index–2
TMS 143 MCS251 Microcontroller Support Instruction Manual
Index
V
variable WAIT state, 1–2
viewing disassembled data, 2–5
X
XXX, definition, ix
TMS 143 MCS251 Microcontroller Support Instruction Manual
Index–3
Index
Index–4
TMS 143 MCS251 Microcontroller Support Instruction Manual
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