Memo | NEC PD75P308 guide

μPD75P308

[MEMO]

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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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NEC PD75P308 user manual Memo

Contents

Ordering Information FeaturesDescription Quality Grade PIN Configuration ΜPD75P308 Block Diagram Contents Port Pins PIN Functions NON 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-C Differences Between μPD75P308 and μPD75308 Eprom Writing 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 Memory Program Memory Write Procedure VDD+1 Program Memory Read Procedure Erasure μPD75P308K only Electrical Specifications Absolute Maximum Ratings Ta = 25C Recommended Oscillation Circuit Constants Main System Clock Oscillator Circuit CharacteristicsTa = -10 to +70C, VDD = 5 to ±5 Main System Clock Ceramic Oscillator Ta = -10 to +70C Capacitance 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 master Clock 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 Mode Reset Input Timing Serial Transfer Timing BUS Release Signal TransferCommand Signal Transfer Interrupt Input Timing Ta = -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 14×20 PIN Ceramic Wqfn Millimeters Inches ΜPD75P308GF-3B9 80-pin plastic QFP 14 x 20 mm Recommended Soldering ConditionsVPS Appendix A. Development Tools Prom writing tools Appendix 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 devices Memo