8 User’s Manual U15331EJ4V1UD
INTRODUCTION
Target Readers This manual is intended for user engineers who wish to understand the functions of
the
µ
PD789489 Subseries and design and develop application systems and programs
for these devices.
Target products:
•
µ
PD789489 Subseries:
µ
PD789488, 789489, 78F9488, 78F9489
Purpose This manual is intended to give users an understanding of the functions described in
the Organization below.
Organization Two manuals are available for the
µ
PD789489 Subseries:
This manual and the instruction manual (common to the 78K/0S Series).
µ
PD789489 Subseries
User’s Manual
78K/0S Series
User’s Manual
Instructions
• Pin functions
• Internal block functions
• Interrupts
• Other on-chip peripheral functions
• Electrical specifications
• CPU function
• Instruction set
• Instruction description
How to Use This Manual 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
µ
PD789489 Subseries
→ 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
µ
PD789489 Subseries
→ Refer to CHAPTER 22 ELECTRICAL SPECIFICATIONS (
µ
PD789488,
78F9488, 789489, 78F9489)