UPD780957 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD780957

8-Bit Single-Chip Microcontrollers

NEC => Renesas Technology 

INTRODUCTION

Readers

Purpose

Organization

This manual is intended for users who wish to understand the functions of the

µPD780958 Subseries and to design and develop its application systems and

programs.

The target devices are products in the following subseries.

µPD780958 Subseries: µPD780957(A), 780958(A)

This manual is intended to give users an understanding of the functions described in

the Organization below.

Two manuals are available for the µPD780958 Subseries:

This manual and the Instruction Manual (common to the 78K/0 Series).

µPD780958 Subseries

User’s Manual

(This Manual)

• Pin functions

• Internal block functions

• Interrupts

• Other internal peripheral functions

• Electrical specifications

78K/0 Series

User’s Manual

Instructions

• CPU function

• Instruction set

• Instruction description

How to Read This Manual

It is assumed that the reader of this manual has general knowledge in the fields of

electrical engineering, logic circuits, and microcontrollers.

• To understand the overall functions of the µPD780958 Subseries:

→ Read this manual in the order of the CONTENTS.

• How to interpret the register format:

→ The name of a bit whose number is in a square is defined as a reserved word in

the RA78K0, and already defined in the header file named sfrbit.h. in the

CC78K0.

• When you know a register name and want to confirm its details:

→ Refer to APPENDIX C REGISTER INDEX.

Conventions

Data significance:

Active low representation:

Note:

Caution:

Remark:

Numerical representation:

Higher digits on the left and lower digits on the right

xxx (overscore over pin or signal name)

Footnote for item marked with Note in the text

Information requiring particular attention

Supplementary information

Binary ... xxxx or xxxxB

Decimal ... xxxx

Hexadecimal ... xxxxH

User’s Manual U13655EJ2V1UD

9

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