NEC PD75P402 Instruction Functions and Application, Content to be read carefully, Remarks

PREFACE

USER

This manual is intended for user engineers who wish to understand the μPD75402A’s, 75P402’s functions and design an application system using them.

OBJECTIVE

The objective of this manual is for the user to understand the μPD75402A’s, 75P402’s hardware functions shown below.

COMPOSITION

This manual is composed roughly of the following contents.

•General description

•Pin functions

•Internal block functions

•Interrupt

•Other internal peripheral functions

•Instruction functions

READING

The reader of this manual must have general knowledge of electricity, logic circuitry and microcomputers.

• Use as the μPD75P402 manual

→This manual describes the μPD75402A as the representative model unless there are particular differences in functions. If using it as the μPD75P402 manual, the μPD75402A should be read as the μPD75P402.

• Checking an instruction function with a known mnemonic

→Appendix D. “Instructions Index (in Alphabetical Order)” should be used.

• Checking an instruction with an unknown mnemonic but with a roughly known function

→Check the instruction’s mnemonic in 9.2 “Instruction Set and Its Operation” and then check the function in 9.4

“Instruction Functions and Application”.

•Roughly understanding the μPD75402A’s, 75P402’s functions

→Follow the contents.

LEGEND

Data notation weight	: High-order digit on the left, low-order digit on the right
Notation of active low	: ××× (line over pin, signal name)
Memory map address	: Upper__low order, lower__high order
*	: Explanation of * in text
Note	: Content to be read carefully
Remarks	: Supplementary explanation of text
Numeric notation	: Binary ... ×××× or ××××B
	Decimal ... ××××
	Hexadecimal ... ××××H