7
User’s Manual U15104EJ2V0UD
PREFACE
Readers
This manual has been prepared for user engineers who wish to understand the
functions of the
µ
PD178054 Subseries and design and develop its application
systems and programs.
Purpose
This manual is intended to give users an understanding of the functions described
in the Organization below.
Organization
The
µ
PD178054 Subseries manual is separated into two parts: this manual and the
instruction edition (common to the 78K/0 Series).
µ
PD178054
Subseries
User’s Manual
•
Pin functions
•
CPU functions
•
Internal block functions
•
Instruction set
•
Interrupt
•
Explanation of each instruction
•
Other on-chip peripheral functions
•
Electrical specifications
How to Read This Manual
Before reading this manual, you should have general knowledge of electric and logic
circuits and microcomputers.
•
When you want to understand the functions in general:
→
Read this manual in the order of the contents.
•
To know the
µ
PD178054 Subseries instruction function in detail:
→
Refer to the 78K/0 Series User’s Manual Instructions (U12326E)
•
How to interpret the register format:
→
For the circled bit number, the bit name is defined as a reserved word in
DF178054 and RA78K0, and in CC78K0, already defined in the header file
named sfrbit.h.
•
To know the electrical specifications of the
µ
PD178054 Subseries:
→
Refer to CHAPTER 19 ELECTRICAL SPECIFICATIONS.
Conventions
Data representation weight:
Higher digits on the left and lower digits on the right
Active low representations:
×××
(overscore over pin or signal name)
Note:
Footnote for item marked with Note in the text.
Caution:
Information requiring particular attention
Remark:
Supplementary information
Numeral representations:
Binary ...
××××
or
××××
B
Decimal ...
××××
Hexadecimal ...
××××
H
78K/0 Series
User’s Manual
Instruction
