NEC IE-789026-NS-EM1 User manual

User’s Manual
Target devices
µ
µµ
µ
PD789026 Subseries
IE-789026-NS-EM1
Emulation Board
1991©
Document No. U14362EJ2V1UM00 (2nd edition)
Date Published June 2002 N CP(K)
Printed in Japan
1999

User’s Manual U14362EJ2V1UM
2
[MEMO]

User’s Manual U14362EJ2V1UM 3
Windows is either a registered trademark or a trademark of Microsoft Corporation in the United States and/or
other countries.
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M8E 00. 4
The information in this document is current as of May, 2002. The information is subject to change
without notice. For actual design-in, refer to the latest publications of NEC's data sheets or data
books, etc., for the most up-to-date specifications of NEC semiconductor products. Not all products
and/or types are available in every country. Please check with an NEC sales representative for
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Descriptions of circuits, software and other related information in this document are provided for illustrative
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User’s Manual U14362EJ2V1UM
4
Regional Information
Some information contained in this document may vary from country to country. Before using any NEC
product in your application, pIease contact the NEC office in your country to obtain a list of authorized
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•
Device availability
•
Ordering information
•
Product release schedule
•
Availability of related technical literature
•
Development environment specifications (for example, specifications for third-party tools and
components, host computers, power plugs, AC supply voltages, and so forth)
•
Network requirements
In addition, trademarks, registered trademarks, export restrictions, and other legal issues may also vary
from country to country.
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Santa Clara, California
Tel: [phone]
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Fax: [phone]
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Tel: [phone]
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Tel: [phone]
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Tel: [phone]
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User’s Manual U14362EJ2V1UM 5
Major Revisions in This Edition
Page Description
Throughout •Addition of description of IE-78K0S-NS-A as supported in-circuit emulator
•Addition of NP-H44GB-TQ and NP-H44GB-TQ as supported emulation probes
•Deletion of NP-42CU from supported emulation probes
pp.12 and 13 Figure 1-1 System Configuration
•Change of supply medium of debugger ID78K0S-NS to CD-ROM
•Modification of Notes 1 to 3
p.15 Thorough modification of Table 1-1 Basic Specifications
pp.20 to 22 3.2.1 Overview of clock settings
•Change of “internal clock”to “clock oscillator”
•Figure 3-2 External Circuits Used as System Clock Oscillator
Addition of VSS pin to figure of (a) Clock oscillator
•Figure 3-3 When Using Clock That Is Already Mounted on Emulation Board and
Figure 3-4 When Using User-Mounted Clock
Change of “resonator”in target system to “clock oscillator or external clock”
•Change of “clock generator”to “external clock”in Figure 3-5 When Using an External
Clock
p.29 in previous revision Deletion of 3.4 Low-Voltage Emulation Setting
p.27 Addition of 3.3 Power Supply Voltage Setting of Target Interface
p.29 3.5 Switch and Jumper Settings on IE-78K0S-NS or IE-78K0S-NS-A
•Addition of Caution
•Addition of (2) Settings on the IE-78K0S-NS-A
p.35 Addition of APPENDIX B CAUTIONS ON DESIGNING TARGET SYSTEM
The mark shows major revised points.

User’s Manual U14362EJ2V1UM
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INTRODUCTION
Product Overview The IE-789026-NS-EM1 is designed to be used with the IE-78K0S-NS or IE-78K0S-NS-A
to debug the following target devices that belong to the 78K/0S Series of 8-bit single-chip
microcontrollers.
• µ
PD789026 Subseries:
µ
PD789022, 789024, 789025, 789026, 78F9026
Target Readers This manual is intended for engineers who will use the IE-789026-NS-EM1 with the IE-
78K0S-NS or IE-78K0S-NS-A to perform system debugging.
Engineers who use this manual are expected to be thoroughly familiar with the target
device’s functions and use methods and to be knowledgeable about debugging.
Organization When using the IE-789026-NS-EM1, refer to not only this manual (supplied with the IE-
789026-NS-EM1) but also the manual that is supplied with the IE-78K0S-NS or IE-
78K0S-NS-A.
IE-78K0-NS IE-789026-NS-EM1
User’s Manual User’s Manual
•Basic specifications •General
•System configuration •Part names
•External interface functions •Installation
•Differences between target devices
and target interface circuits
IE-78K0S-NS-A
User’s Manual
•Basic specifications
•System configuration
•External interface functions
Purpose This manual’s purpose is to explain various debugging functions that can be performed
when using the IE-789026-NS-EM1.

User’s Manual U14362EJ2V1UM 7
Terminology The meanings of certain terms used in this manual are listed below.
Term Meaning
Emulation device This is a general term that refers to the device in the emulator that is used to emulate the target
device. It includes the emulation CPU.
Emulation CPU This is the CPU block in the emulator that is used to execute user-generated programs.
Target device This is the device to be emulated (real chip).
Target system This includes the target program and the hardware provided by the user. When defined narrowly, it
includes only the hardware.
IE system This refers to the combination of the IE-78K0S-NS or IE-78K0S-NS-A and the IE-789026-NS-EM1.
Conventions Data significance: Higher digits on the left and lower digits on the right
Note: Footnote for item marked with Note in the text
Caution: Information requiring particular attention
Remark: Supplementary information
Related Documents The related documents (user’s manuals) indicated in this publication may include
preliminary versions. However, preliminary versions are not marked as such.
Document Name Document Number
IE-78K0S-NS U13549E
IE-78K0S-NS-A U15207E
IE-789026-NS-EM1 This manual
ID78K0-NS, ID78K0S-NS Integrated Debugger Ver. 2.20 or Later Operation Windows™ Based U14910E
µ
PD789026 Subseries U11919E
Caution The documents listed above are subject to change without notice. Be sure to use the latest
documents when designing.

User’s Manual U14362EJ2V1UM
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CONTENTS
CHAPTER 1 GENERAL...........................................................................................................................11
1.1 System Configuration................................................................................................................................12
1.2 Hardware Configuration ............................................................................................................................14
1.3 Basic Specifications ..................................................................................................................................15
CHAPTER 2 PART NAMES.....................................................................................................................16
2.1 Parts of Main Unit.......................................................................................................................................17
CHAPTER 3 INSTALLATION ..................................................................................................................18
3.1 Connection .................................................................................................................................................19
3.2 Clock Settings ............................................................................................................................................20
3.2.1 Overview of clock settings .............................................................................................................20
3.2.2 Main system clock settings ............................................................................................................22
3.3 Power Supply Voltage Setting of Target Interface ..................................................................................27
3.4 External Trigger..........................................................................................................................................28
3.5 Switch and Jumper Settings on IE-78K0S-NS or IE-78K0S-NS-A ..........................................................29
CHAPTER 4 DIFFERENCES BETWEEN TARGET DEVICE AND TARGET INTERFACE CIRCUIT....30
APPENDIX A EMULATION PROBE PIN ASSIGNMENT TABLE...........................................................34
APPENDIX B CAUTIONS ON DESIGNING TARGET SYSTEM..............................................................35

User’s Manual U14362EJ2V1UM 9
LIST OF FIGURES
Figure No. Title Page
1-1 System Configuration ........................................................................................................................................12
1-2 Basic Hardware Configuration...........................................................................................................................14
2-1 IE-789026-NS-EM1 Part Names .......................................................................................................................17
3-1 Connection of Emulation Probe.........................................................................................................................19
3-2 External Circuits Used as System Clock Oscillator ...........................................................................................20
3-3 When Using Clock That Is Already Mounted on Emulation Board ....................................................................21
3-4 When Using User-Mounted Clock .....................................................................................................................21
3-5 When Using an External Clock..........................................................................................................................22
3-6 Connections on Parts Board (When Using User-Mounted Clock).....................................................................23
3-7 Crystal Oscillator (When Using User-Mounted Clock).......................................................................................25
3-8 Pin Alignment of Crystal Oscillator and Socket .................................................................................................25
3-9 Connection of TP1 and Power Supply Voltage of Target System .....................................................................27
3-10 External Trigger Input Position ..........................................................................................................................28
4-1 Equivalent Circuit 1 of Emulation Circuit ...........................................................................................................32
4-2 Equivalent Circuit 2 of Emulation Circuit ...........................................................................................................33
4-3 Equivalent Circuit 3 of Emulation Circuit ...........................................................................................................33
B-1 Distance Between In-Circuit Emulator and Conversion Socket/Conversion Adapter........................................35
B-2 Connection Condition of Target System (When NP-H44GB-TQ Is Used).........................................................36

User’s Manual U14362EJ2V1UM
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LIST OF TABLES
Table No. Title Page
1-1 Basic Specifications.......................................................................................................................................... 15
3-1 Main System Clock Settings ............................................................................................................................. 22
3-2 Switch and Jumper Settings on IE-78K0S-NS.................................................................................................. 29
3-3 Switch and Jumper Settings on IE-78K0S-NS-A .............................................................................................. 29
A-1 NP-44GB, NP-44GB-TQ, NP-H44GB-TQ Pin Assignments ............................................................................. 34

User’s Manual U14362EJ2V1UM 11
CHAPTER 1 GENERAL
The IE-789026-NS-EM1 is a development tool for efficient debugging of hardware or software when using one of
the following target devices that belong to the 78K/0S Series of 8-bit single-chip microcontrollers.
This chapter describes the IE-789026-NS-EM1’s system configuration and basic specifications.
•Target devices
•
µ
PD789026 Subseries

CHAPTER 1 GENERAL
User’s Manual U14362EJ2V1UM
12
1.1 System Configuration
Figure 1-1 illustrates the IE-789026-NS-EM1’s system configuration.
Figure 1-1. System Configuration
FG Cable
IE-78K0S-NS
or
IE-78K0S-NS-A
(sold separately)
IE-70000-CD-IF-A
(sold separately)
Debugger
ID78K0S-NS
(sold separately)
Device file
Note 1
(obtain separately)
Control software
Host machine
PC-9800 Series,
IBM PC/AT™
or compatibles
Interface board
IE-70000-98-IF-C
(sold separately)
Interface board
IE-70000-PC-IF-C
(sold separately)
Interface board
IE-70000-PCI-IF-A
(sold separately)
or
Interface cable
(NS IF Cable)
In-circuit emulator
IE-789177-NS-EM1
(This product)
AC adapter
IE-70000-MC-PS-B
(sold separately)
Emulation probe
Note 2
(sold separately)
Conversion socket/conversion adapter
Note 3
(sold separately)
NS CARD
Cable MC CARD Cable
Interface
cable
Interface card

CHAPTER 1 GENERAL
User’s Manual U14362EJ2V1UM 13
Notes 1. The device file is as follows, in accordance with the subseries.
µ
S××××DF789026:
µ
PD789022, 789024, 789025, 789026, 78F9026A
Device files can be downloaded from the NEC Electron Devices Web site
(URL: http://www.ic.nec.co.jp/micro).
2. The emulation probe is as follows, in accordance with the package.
NP-44GB, NP-44GB-TQ, NP-H44GB-TQ: 44-pin plastic QFP (GB-8ES type)
The NP-44GB, NP-44GB-TQ, and NP-H44GB-TQ are products made by Naito Densei Machida Mfg.
Co., Ltd.
For further information, contact Naito Densei Machida Mfg. Co., Ltd. (TEL: [phone])
3. The conversion socket and conversion adapter are as follows.
EV-9200G-44: 44-pin plastic QFP (GB-8ES type)
TGB044SAP: 44-pin plastic QFP (GB-8ES type)
TGB044SAP is a product of TOKYO ELETECH CORPORATION.
For further information, contact Daimaru Kogyo Co., Ltd.
Tokyo Electronics Department: [phone]
Osaka Electronics Department: [phone]

CHAPTER 1 GENERAL
User’s Manual U14362EJ2V1UM
14
1.2 Hardware Configuration
Figure 1-2 shows the IE-789026-NS-EM1’s position in the basic hardware configuration.
Figure 1-2. Basic Hardware Configuration
IE-78K0S-NS/IE-78K0S-NS-A IE-789026-NS-EM1
Emulation probe
(sold separately)
Dedicated bus interface
IE system
Host machine Interface board
(sold separately)
78K0S main board
(sold separately)
Emulation board
(This product)
Interface card
(sold separately)

CHAPTER 1 GENERAL
User’s Manual U14362EJ2V1UM 15
1.3 Basic Specifications
The IE-789026-NS-EM1’s basic specifications are listed in Table 1-1.
Table 1-1. Basic Specifications
Parameter Description
Target device
µ
PD789026 Subseries
System clock Main system clock: 1.0 to 5.0 MHz
Main system clock supply External: Input via an emulation probe from the target system
Internal: Mounted on emulation board (5.0 MHz), or mounted on the board by the user
Target interface voltage VDD = 1.8 to 5.5 V (same as that of target device)
Operates on internal power supply (5 V) when target system is not connected

User’s Manual U14362EJ2V1UM
16
CHAPTER 2 PART NAMES
This chapter introduces the parts of the IE-789026-NS-EM1 main unit.
The packing box contains the emulation board (IE-789026-NS-EM1), packing list, user’s manual, and guarantee
card.
If there are any missing or damaged items, please contact an NEC sales representative.
Fill out and return the guarantee card that comes with the main unit.

CHAPTER 2 PART NAMES
User’s Manual U14362EJ2V1UM 17
2.1 Parts of Main Unit
Figure 2-1. IE-789026-NS-EM1 Part Names
GND
LowVolt
Probe connector
CN1 44GB
Probe connector
CN2 42CU
EXTOUT
EXTIN
LED1
CN1 44GB
CN2 42CU
IE-789026-NS-EM1
X1
Main system clock
X1
TP1
TP1

User’s Manual U14362EJ2V1UM
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CHAPTER 3 INSTALLATION
This chapter describes methods for connecting the IE-789026-NS-EM1 to the IE-78K0S-NS or IE-78K0S-NS-A,
emulation probe, etc. Mode setting methods are also described.
Caution Connecting or removing components to or from the target system, or making switch or other
setting changes must be carried out after the power supply to both the IE system and the target
system has been switched OFF.

CHAPTER 3 INSTALLATION
User’s Manual U14362EJ2V1UM 19
3.1 Connection
(1) Connection with IE-78K0S-NS or IE-78K0S-NS-A main unit
See the IE-78K0S-NS User’s Manual (U13549E) for a description of how to connect the IE-789026-NS-EM1 to
the IE-78K0S-NSNote.
Note When using the IE-78K0S-NS-A, see the IE-78K0S-NS-A User’s Manual (U15207E).
(2) Connection with emulation probe
See the IE-78K0S-NS User’s Manual (U13549E) for a description of how to connect an emulation probe to the
IE-789026-NS-EM1Note.
On this board, connect NP-44GB to CN1.
Note When using the IE-78K0S-NS-A, see the IE-78K0S-NS-A User’s Manual (U15207E).
Caution Incorrect connection may damage the IE system.
Be sure to read the emulation probe’s user’s manual for a detailed description of the
connection method.
Figure 3-1. Connection of Emulation Probe
Main board (sold separately)
(IE-78K0S-NS or IE-78K0S-NS-A)
IE-789026-NS-EM1
CN1 44GB
Emulation probe
(sold separately)

CHAPTER 3 INSTALLATION
User’s Manual U14362EJ2V1UM
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3.2 Clock Settings
3.2.1 Overview of clock settings
The main system clock to be used during debugging can be selected from (1) to (3) below.
(1) Clock that is already mounted on emulation board
(2) Clock that is mounted by user
(3) Pulse input from target system
If the target system includes a clock oscillator, select either “(1) Clock that is already mounted on emulation board”
or “(2) Clock that is mounted by user”. For the clock oscillator, a resonator is connected to the target device and the
target device’s internal oscillator is used. An example of the external circuit is shown in part (a) of Figure 3-2. During
emulation, the oscillator that is mounted on the target system is not used. Instead, the clock that is mounted on the
emulation board installed in the IE-78K0S-NS or IE-78K0S-NS-A is used.
If the target system includes an external clock, select “(3) Pulse input from target system”.
For the external clock, a clock signal is supplied from outside of the target device and the target device’s internal
oscillator is not used. An example of the external circuit is shown in part (b) of Figure 3-2.
Caution The IE system will be hung-up if the main system clock is not supplied normally. Moreover, be
sure to input a rectangular wave as the clock from the target. There is no need to supply a
clock to the X2 pin.
Figure 3-2. External Circuits Used as System Clock Oscillator
(a) Clock oscillator (b) External clock
X1
V
SS
External
clock
X2
X1
X2
Target device Target device