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NEC uPD780318 Subseries, uPD780328 Subseries, uPD780338 Subseries 3.7 Low-Voltage Emulation Settings

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CHAPTER 3 INSTALLATION

User’s Manual U16214EJ1V0UM

3.7 Low-Voltage Emulation Settings

When the target system is operating on low voltage, supply the same supply voltage as the target system to the

TP1 terminal pin on the main board of the IE-78K0-NS or IE-78K0-NS-A (G-780009 Board) (this processing is not

necessary when the target system is operating at 5 V).

At that time, set the voltage supplied to the target system to between 1.8 and 5.5 V.

Caution When emulating at 4.5 V or lower, first start up at 5 V and then lower the target system voltage.

Table 3-6. Supply Voltage and Maximum Current Consumption During Low-Voltage Emulation

Voltage Supplied to TP1 Maximum Current Consumption of TP1

1.8 to 5.5 V 300 mA

Figure 3-18. Main Board of IE-78K0-NS or IE-78K0-NS-A (G-780009 Board)

GND V

Dedicated bus interface

connector (HOST-I/F)

TP1

Contents

Main Users Manual IE-780338-NS-EM1 Page Page Regional Information Device availability Ordering information Product release schedule Availability of related technical literature INTRODUCTION Page Page LIST OF FIGURES Page CHAPTER 1 GENERAL CHAPTER 1 GENERAL 1.1 System Configuration Page CHAPTER 1 GENERAL 1.2 Hardware Configuration Figure 1-3. Basic Hardware Configuration (Using IE-78K0-NS-A) 1.3 Basic Specifications Page CHAPTER 2 PART NAMES 2.1 Parts of Main Unit Figure 2-1. IE-780338-NS-EM1 Part Names Page 3.1 Connection Page 3.2 Clock Settings Page Page Page Page Page Page Page Page CHAPTER 3 INSTALLATION Remark The sections enclosed in broken lines indicate parts that are attached to the parts board. Circuit diagram Page Page Page CHAPTER 3 INSTALLATION 3.3 Mask Option Setting F Connection Pins Part Used Parts Board at Shipment 1-16 Capacitor C1 0.47 F 3-14 Resistor R2 2 M 4-13 Resistor R1 1 M 6-11 Capacitor C2 0.47 F 7-10 Capacitor C3 0.47 3.4 External Trigger 3.5 Jumper Settings on IE-78K0-NS 3.6 Jumper Settings on IE-78K0-NS-A 3.7 Low-Voltage Emulation Settings CHAPTER 4 DIFFERENCES BETWEEN TARGET DEVICES AND TARGET INTERFACE CIRCUITS CHAPTER 4 DIFFERENCES BETWEEN TARGET DEVICES AND TARGET INTERF ACE CIRCUITS Figure 4-1. Equivalent Circuit of Emulation Circuit 1 Figure 4-2. Equivalent Circuit of Emulation Circuit 2 CHAPTER 4 DIFFERENCES BETWEEN TARGET DEVICES AND TARGET INTERF ACE CIRCUITS Figure 4-3. Equivalent Circuit of Emulation Circuit 3 CHAPTER 5 RESTRICTIONS AND CAUTIONS ON USE APPENDIX A EMULATION PROBE PIN ASSIGNMENT TABLE Table A-1. SWEX-120SE-1 Pin Assignments (1/2) Table A-1. SWEX-120SE-1 Pin Assignments (2/2) APPENDIX B CAUTIONS ON DESIGNING TARGET SYSTEM APPENDIX B CAUTIONS ON DESIGNING TARGET SYSTEM Figure B-2. Connection Conditions of Target System Page Page Facsimile Message Thank you for your kind support. From: