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)
