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UPD784915B Datasheet(PDF) 10 Page - NEC |
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UPD784915B Datasheet(HTML) 10 Page - NEC |
10 / 86 page µPD784915B, 784916B 10 CONTENTS 1. DIFFERENCES AMONG µPD784915 SUBSERIES PRODUCTS .................................................. 11 2. PIN FUNCTIONS .............................................................................................................................. 12 2.1 Port Pins ................................................................................................................................................ 12 2.2 Non-Port Pins ........................................................................................................................................ 13 2.3 I/O Circuits and Connection of Unused Pins ...................................................................................... 15 3. INTERNAL BLOCK FUNCTIONS .................................................................................................... 19 3.1 CPU Registers ....................................................................................................................................... 19 3.1.1 General-purpose registers ......................................................................................................... 19 3.1.2 Other CPU registers .................................................................................................................... 20 3.2 Memory Space ....................................................................................................................................... 20 3.3 Special Function Registers (SFRs) ..................................................................................................... 23 3.4 Ports ....................................................................................................................................................... 28 3.5 Real-time Output Port ........................................................................................................................... 29 3.6 Super Timer Unit ................................................................................................................................... 33 3.7 Serial Interface ...................................................................................................................................... 38 3.8 A/D Converter ........................................................................................................................................ 40 3.9 VCR Analog Circuits ............................................................................................................................. 41 3.10 Watch Function ..................................................................................................................................... 47 3.11 Clock Output Function ......................................................................................................................... 48 4. INTERNAL/EXTERNAL CONTROL FUNCTION ............................................................................ 49 4.1 Interrupt Function ................................................................................................................................. 49 4.1.1 Vector interrupt ........................................................................................................................... 51 4.1.2 Context switching ....................................................................................................................... 51 4.1.3 Macro service .............................................................................................................................. 52 4.1.4 Application example of macro service .....................................................................................54 4.2 Standby Function .................................................................................................................................. 57 4.3 Clock Generator Circuit ........................................................................................................................ 59 4.4 Reset Function ...................................................................................................................................... 60 5. INSTRUCTION SETS ....................................................................................................................... 61 6. ELECTRICAL CHARACTERISTICS ............................................................................................... 65 7. PACKAGE DRAWING ..................................................................................................................... 77 8. RECOMMENDED SOLDERING CONDITIONS ............................................................................... 78 APPENDIX A. DEVELOPMENT TOOLS ............................................................................................... 79 APPENDIX B. RELATED DOCUMENTS ............................................................................................... 81 |
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