MPD78C14 datasheet(8/373 Pages) NEC

8 / 373 page

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TABLE OF CONTENTS

CHAPTER 1 GENERAL DESCRIPTION ...........................................................................................

1.1

Features .............................................................................................................................

1.2

Ordering Information and Quality Grade .....................................................................

1.2.1

Ordering information ...........................................................................................................

1.2.2

Quality grade ........................................................................................................................

1.3

Pin Configurations (Top View) .......................................................................................

1.3.1

Shrink DIP, QUIP (straight) (37), QUIP (36) ........................................................................

1.3.2

QFP (1B/3BE), WQFN .........................................................................................................

1.3.3

QFP (AB8) ............................................................................................................................

1.3.4

QFJ .......................................................................................................................................

1.4

Block Diagram...................................................................................................................

1.5

Functional Comparison of 87AD Series CMOS Products ...........................................

1.6

Differences between 87AD Series CMOS and NMOS Products ................................

1.7

Differences between "Standard" and "Special" Quality Grade Products ...............

CHAPTER 2 PIN FUNCTIONS .........................................................................................................

2.1

Normal Operation Mode .................................................................................................

2.1.1

PA7 to PA0 (Port A) .............................................................................................................

2.1.2

PB7 to PB0 (Port B) .............................................................................................................

2.1.3

PC7 to PC0 (Port C) .............................................................................................................

2.1.4

PD7 to PD0 (Port D) ............................................................................................................

2.1.5

PF7 to PF0 (Port F) ..............................................................................................................

2.1.6

WR (Write strobe) ...............................................................................................................

2.1.7

RD (Read strobe) .................................................................................................................

2.1.8

ALE (Address latch enable) .................................................................................................

2.1.9

MODE0, MODE1 (Mode) ....................................................................................................

2.1.10

NMI (Non maskable interrupt) ............................................................................................

2.1.11

INT1 (Interrupt request) ......................................................................................................

2.1.12

AN7 to AN0 (Analog input) .................................................................................................

2.1.13

VAREF (Reference voltage) ....................................................................................................

2.1.14

AVDD (Analog VDD) ................................................................................................................

2.1.15

AVSS (Analog VSS) .................................................................................................................

2.1.16

STOP (Stop control input) ...................................................................................................

2.1.17

X1, X2 (Crystal) ....................................................................................................................

2.1.18

RESET (Reset) .....................................................................................................................

2.1.19

VDD ........................................................................................................................................

2.1.20

VSS ........................................................................................................................................

2.1.21

IC ..........................................................................................................................................

2.2

EPROM Mode ....................................................................................................................

2.2.1

A14 to A0 (Address) ............................................................................................................

2.2.2

O7 to O0 (Data) ...................................................................................................................

2.2.3

CE (Chip enable) ..................................................................................................................

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