UPD784216AY datasheet(8/733 Pages) NEC

Part #	UPD784216AY

Description	16-Bit Single-Chip Microcontrollers

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Manufacturer	NEC [NEC]

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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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