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UPD75P068CU: 产品描述4 BIT SINGLE-CHIP MICROCOMPUTER; 文件大小346KB，共40页; 制造商NEC ( Renesas ); 官网地址https://www2.renesas.cn/zh-cn/

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UPD75P068CU概述

4 BIT SINGLE-CHIP MICROCOMPUTER

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DATA SHEET

MOS INTEGRATED CIRCUIT

PD75P068

4 BIT SINGLE-CHIP MICROCOMPUTER

The

PD75P068 is produced by replacing the internal mask ROM of the

PD75068 with a one-time PROM

in which data can be written once.

The following user's manual describes the details of the functions of the

PD75P068. Be sure to read it

before designing an application system.

PD75068 User's Manual: IEU-1366

FEATURES

•

Compatible with the

PD75068

• Can be replaced with the

PD75068 containing mask ROM on a full-production basis.

•

Internal one-time PROM: 8064 words

8 bits

Internal RAM: 512 words

4 bits

Internal pull-up resistors can be specified with software: Ports 0 to 3 and 6

N-ch open-drain input-output: Ports 4 and 5

Can operate at low voltage: V

= 2.7 to 6.0 V

ORDERING INFORMATION

Part number

Package

42-pin plastic shrink DIP (600 mil)

44-pin plastic QFP (Square 10 mm)

Quality grade

Standard

PD75P068CU

PD75P068GB-3B4

Caution The

PD75P068 is not provided with mask-selected pull-up resistors.

Please refer to "Quality Grades on NEC Semiconductor Devices" (Document number IEI-1209) published by NEC

Corporation to know the specification of quality grade on the devices and its recommended applications.

The information in this document is subject to change without notice.

Document No. IC-3290A

(O.D. No. IC-8623A

Date Published April 1994 P

Printed in Japan

Major changes in this revision are indicated by stars (5) in the margins.

1990

NEC CORPORATION 1993

PD75P068

CONTENTS

PIN FUNCTIONS ........................................................................................................................

1.1 PORT PINS ..........................................................................................................................................

1.2 NON-PORT PINS ................................................................................................................................

1.3 PIN INPUT/OUTPUT CIRCUITS ........................................................................................................

DIFFERENCE BETWEEN THE

PD75P068 AND

PD75068 ...................................................

WRITING TO AND VERIFYING PROM (PROGRAM MEMORY) ............................................

3.1 OPERATING MODES WHEN WRITING TO AND VERIFYING THE PROGRAM MEMORY .........

3.2 WRITING TO THE PROGRAM MEMORY .........................................................................................

3.3 READING THE PROGRAM MEMORY ..............................................................................................

SCREENING ONE-TIME PROM PRODUCTS ...........................................................................

ELECTRICAL CHARACTERISTICS .............................................................................................

CHARACTERISTIC CURVES (FOR REFERENCE) .....................................................................

PACKAGE DRAWINGS ..............................................................................................................

RECOMMENDED SOLDERING CONDITIONS .......................................................................

APPENDIX A DEVELOPMENT TOOLS..........................................................................................

APPENDIX B RELATED DOCUMENTS ..........................................................................................

UPD75P068CU相似产品对比

	UPD75P068CU	UPD75P068
描述	4 BIT SINGLE-CHIP MICROCOMPUTER	4 BIT SINGLE-CHIP MICROCOMPUTER

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