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UPD789025 Datasheet(PDF) 9 Page - NEC |
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UPD789025 Datasheet(HTML) 9 Page - NEC |
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9 / 213 page  User's Manual U11919EJ3V0UM00 9 INTRODUCTION Readers This manual is intended for user engineers who understand the functions of the µPD789026 Subseries to design and develop its application systems and programs. The target subseries is the µPD789026 Subseries, which consists of the µPD789022, µPD789024, µPD789025, µPD789026, and µPD78F9026A. 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 µPD789026 Subseries: this manual and Instruction Manual (common to the 78K/0S Series). µPD789026 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 µPD789026 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 Instruction (U11047E) separately available. Legend Data significance : Left: higher digit, right: lower digit Active low : ××× (top bar over pin or signal name) Note : Description of text marked Note Caution : Important information Remark : Supplement Numerical representation : Binary ... ×××× or ××××B Decimal ... ×××× Hexadecimal ... ××××H |
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