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User’s Manual U15075EJ1V0UM00
7
INTRODUCTION
Target Readers
This manual is intended to give user engineers an understanding of the functions of
the
μ
PD789426, 789436, 789446, and 789456 Subseries to design and develop its
application systems and programs.
Target products:
μ
PD789426 Subseries:
μ
PD789425, 789426
μ
PD789436 Subseries:
μ
PD789435, 789436
μ
PD789446 Subseries:
μ
PD789445, 789446
μ
PD789456 Subseries:
μ
PD789455, 789456
Purpose
This manual is designed to deepen your understanding of the following functions
using the following organization.
Organization
Two manuals are available for the
μ
PD789426, 789436, 789446, and 789456
Subseries:
This manual and the instruction manual (common to the 78K/0S Series).
μ
PD789426, 789436, 789446,
and 789456 Subseries
User’s Manual
78K/0S Series
User’s Manual
Instructions
Pin functions
Internal block functions
Interrupts
Other internal peripheral functions
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
PD789426, 789436, 789446, and
789456 Subseries
→
Read this manual in the order of the
CONTENTS
.
How to read register formats
→
The name of a bit whose number is enclosed in brackets is reserved for the
assembler and is defined for the C compiler by the header file sfrbit.h.
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.