NEC PD75P308 user manual Memo

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μPD75P308

[MEMO]

No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this document.

NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or others.

The devices listed in this document are not suitable for uses in aerospace equipment, submarine cables, nuclear reactor control systems and life support systems. If customers intend to use NEC devices for above applications or they intend to use "Standard" quality grade NEC devices for the applications not intended by NEC, please contact our sales people in advance.

Application examples recommended by NEC Corporation

Standard: Computer, Office equipment, Communication equipment, Test and Measurement equipment, Machine tools, Industrial robots, Audio and Visual equipment, Other consumer products,etc.

Special: Automotive and Transportation equipment, Traffic control systems, Antidisaster systems, Anticrime system, etc.

M4 92.6

MS-DOS is a trademark of Microsoft Corporation.

PC DOS and PC/AT are trademarks of IBM Corporation.

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Contents Ordering Information FeaturesDescription Quality GradePIN Configuration ΜPD75P308Block Diagram Contents Port Pins PIN FunctionsNON Port Pins PIN INPUT/OUTPUT Circuits Schmitt trigger input with hysteresis characteristicsInput buffer of Cmos standard Type F-B COMIN/OUT SEG Connect capacitor between VDD and P00/INT4, Reset pin Type M-CDifferences Between μPD75P308 and μPD75308 EpromWriting and Verifying Prom Program Memory Program memory address 0 clear mode+12.5 Write mode Verify mode Program inhibit mode Or H Operation Modes for WRITING/VERIFYING Program MemoryProgram Memory Write Procedure VDD+1Program Memory Read Procedure Erasure μPD75P308K only Electrical Specifications Absolute Maximum Ratings Ta = 25CRecommended Oscillation Circuit Constants Main System Clock Oscillator Circuit CharacteristicsTa = -10 to +70C, VDD = 5 to ±5 Main System Clock Ceramic Oscillator Ta = -10 to +70CCapacitance Ta = 25C, VDD = 0 DC Characteristics Ta = -10 to +70C, VDD = 5V ±5% Interrupt mode register IM0 AC Characteristics Ta = -10 to + 70C, VDD = 5V ±5%Operation Other Than Serial Transfer Serial Transfer Operation SBI Mode SCK internal clock output master SBI Mode SCK external clock output masterClock Timing AC Timing Test Point excluding X1 and XT1 inputsTI0 Timing Serial Transfer Timing THREE-LINE Serial I/O Mode TWO-LINE Serial I/O ModeReset Input Timing Serial Transfer Timing BUS Release Signal TransferCommand Signal Transfer Interrupt Input TimingTa = -10 to +70C Data Retention Timing releasing Stop mode by ResetBTM3 BTM2 BTM1 BTM0 Other than X1 or Program Memory Read Timing Program Memory Write TimingMD0 MD1 Package Drawings PIN Plastic QFP 14×20PIN Ceramic Wqfn Millimeters InchesΜPD75P308GF-3B9 80-pin plastic QFP 14 x 20 mm Recommended Soldering ConditionsVPS Appendix A. Development Tools Prom writing toolsAppendix B. Related Documents Status Before Initialization ALL MOS Devices Processing of Unused Pins Cmos Devices onlyStatic Electricity ALL MOS Devices Fix the input level of Cmos devicesMemo