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UPD784938 Datasheet(PDF) 8 Page - NEC |
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UPD784938 Datasheet(HTML) 8 Page - NEC |
8 / 733 page ![]() 8 Preliminary User’s Manual U13987EJ1V0UM00 How to Read This Manual Readers are required to have a general knowledge of electric engineering, logic circuits and microcomputers. • Unless otherwise specified The µPD784938 is treated as the representative model. If using the µPD784935, 784936, 784937, and 78F4938, take the µPD784938 for the µPD784935, 784936, 784937, and 78F4938. ♦ To understand overall functions of the µPD784938 Subseries: → Read this manual in the order of the CONTENTS. ♦ To learn about differences from the µPD784908 Subseries: → See 1.8 Main Differences with µPD784908 Subseries. ♦ If the device operates strangely after debugging: → Cautions are summarized at the end of each chapter, so refer to the cautions for the relevant function. ♦ To learn the detailed functions of a register whose register name is known: → Use APPENDIX C REGISTER INDEX. ♦ To learn the details of the instruction functions: → Refer to 78K/IV Series User’s Manual-Instruction (U10905E) separately available. ♦ To learn about the electrical characteristics: → Refer to Data Sheets. ♦ To learn about application examples of each function: → Refer to Application Note separately available. Conventions Data significance: Higher digits on the left and lower digits on the right Active low representation: × × × (Overscore over pin or signal name) Note: Footnote for item marked with Note in the text Caution: Information requiring particular attention Remark: Supplementary information Numerical representation: Binary ......................... × × × × B or × × × × Decimal ...................... × × × × Hexadecimal ............... × × × × H |
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