This document is the user manual for NEC Electronics' µPD78F0500 series and µPD78F0501 series 8-bit single-chip microcontrollers. The µPD78F0503D has an on-chip debug function, but it is not recommended for mass production as the reliability of the flash memory may be affected after using the debug function. The document also mentions the voltage application waveform at input pins and the handling of unused input pins.
This manual is intended for engineers who need to understand the functions of the NEC 78K0/KB2 (uPD78F0500‑A2, uPD78F0501‑A2, uPD78F0502‑A2, uPD78F0503‑D) 8‑bit single‑chip microcontrollers and develop applications with them. It covers pin functions, CPU core features, on‑chip peripherals, instruction set details, and electrical specifications.
The document also includes handling precautions such as ESD protection, power‑on/off sequencing, and guidelines for unused pins. Appendices provide a register index, revision history, and contact information for NEC Electronics worldwide.
| Microcontroller type | 8‑bit single‑chip |
|---|---|
| Debug function | On‑chip debug (PD78F0503D) |
| Flash technology | SuperFlash® licensed from SST |
| Quality grade | Standard |