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User's Manual U11919EJ3V0UM00
9
INTRODUCTION
Readers
This manual is intended for user engineers who understand the functions of the
μ
PD789026 Subseries to design and develop its application systems and programs.
The target subseries is the
μ
PD789026 Subseries, which consists of the
μ
PD789022,
μ
PD789024,
μ
PD789025,
μ
PD789026, and
μ
PD78F9026A.
Purpose
This manual is designed to deepen your understanding of the following functions
described in the following organization.
Organization
Two manuals are available for the
μ
PD789026 Subseries: this manual and
Instruction Manual (common to the 78K/0S Series).
μ
PD789026 Subseries
User's Manual
78K/0S Series
User's Manual
Instruction
Pin functions
Internal block functions
Interrupt
Other internal peripheral functions
CPU function
Instruction set
Instruction description
How to Read This Manual
It is assumed that the readers of this manual have general knowledge on electric
engineering, logic circuits, and microcontrollers.
To understand the overall functions of the
μ
PD789026 Subseries
→
Read this manual in the order of the
TABLE OF CONTENTS
.
How to read register formats
→
The name of a bit whose number is encircled 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
APPENDEX C
.
To learn the details of the instruction functions of the 78K/0S Series
→
Refer to
78K/0S Series User's Manual
available.
Instruction (U11047E)
separately
Legend
Data significance
Active low
Note
Caution
Remark
Numerical representation :
:
:
:
:
:
Left: higher digit, right: lower digit
×××
(top bar over pin or signal name)
Description of text marked
Note
Important information
Supplement
Binary ...
××××
or
××××
B
Decimal ...
××××
Hexadecimal ...
××××
H