This document is a user's manual for µµµµPD789425 µµµµPD789445 µµµµPD789426 µµµµPD789446 µµµµPD789435 µµµµPD789455 µµµµPD789436 µµµµPD789456 µµµµPD78F9436 µµµµPD78F9456 µµµµPD789426, 789436, 789446 789456 subseries 8-bit single-chip microcontrollers. The manual describes the features and characteristics of the products.
This manual provides engineers with detailed information on the functions, pin assignments, CPU operation, and peripheral features of the NEC uPD789426/789436/789446/789456 subseries microcontrollers. It is intended for design and development of application systems and includes references to related instruction manuals and development tools.
The document also contains safety, export, and legal notices, as well as a register index (Appendix C) that lists all registers and their functions for quick reference during hardware and software development.
| Microcontroller type | 8‑Bit Single‑Chip |
|---|---|
| Document number | U15075EJ1VOUMO0 |
Two manuals are available: this user manual and the instruction manual common to the 78K/0S series.
Standard, Special, and Specific are the three quality grades, each intended for different application categories.