NEC PD789488 User Manual page 8

Target Readers
Purpose
Organization
How to Use This Manual
8
INTRODUCTION
This manual is intended for user engineers who wish to understand the functions of
µ
the PD789489 Subseries and design and develop application systems and programs
for these devices.
Target products:
µ
•
PD789489 Subseries:
This manual is intended to give users an understanding of the functions described in
the Organization below.
Two manuals are available for the
This manual and the instruction manual (common to the 78K/0S Series).
µ
PD789489 Subseries
User's Manual
• Pin functions
• Internal block functions
• Interrupts
• Other on-chip peripheral functions
• Electrical specifications
It is assumed that the readers of this manual have general knowledge of electrical
engineering, logic circuits, and microcontrollers.
• To understand the overall functions of the
→ Read this manual in the order of the CONTENTS.
• How to read register formats
→ The name of a bit whose number is enclosed with <> is reserved in the
assembler and is defined as an sfr variable by the #pragma sfr directive for the
C compiler.
• To learn the detailed functions of a register whose register name is known
→ See APPENDIX C REGISTER INDEX.
• To learn the details of the instruction functions of the 78K/0S series
→ Refer to 78K/0S Series Instructions User's Manual (U11047E) separately
available.
• To learn about the electrical specifications of the
→ Refer to CHAPTER 22
78F9488, 789489, 78F9489)
User's Manual U15331EJ4V1UD
µ
PD789488, 789489, 78F9488, 78F9489
µ
PD789489 Subseries:
78K/0S Series
User's Manual
Instructions
• CPU function
• Instruction set
• Instruction description
µ
PD789489 Subseries
µ
PD789489 Subseries
ELECTRICAL SPECIFICATIONS (
µ
PD789488,