NEC PD78F0881(A)/ PD78F0881(A2)/ PD78F0882(A)/ PD78F0882(A2)/ PD78F0883(A)/ PD78F0883(A2)/ PD78F0884(A)/ PD78F0884(A2)/ PD78F0885(A)/ PD78F0885(A2)/ PD78F0886(A)/

About this manual

This manual provides engineers with detailed information on the 78KO/FC2 series microcontrollers, including the uPD78F0881 through uPD78F0886 (A and A2 grades). It describes the device’s on‑chip debug function, power‑on/off sequencing, and handling of unused pins, as well as safety precautions such as ESD protection.

The document includes a complete pin‑function list, CPU architecture description, register index, electrical specifications, and references to related development tools and programming manuals. It is intended for users designing and developing applications with these 8‑bit single‑chip microcontrollers.

What's inside

• Introduction
• Pin Functions
• CPU Architecture
• Electrical Specifications
• Register Index
• On‑Chip Debug Function
• Power On/Off Sequence
• ESD Precautions
• Related Documents

Specifications

Frequently asked questions

Can the device be used for mass production after the on‑chip debug function has been used?

No, reliability cannot be guaranteed after using the on‑chip debug function, so it should not be used for mass production.

What is the recommended power on/off sequence for the device?

Turn on the internal power supply first, then the external; when powering off, turn off the external supply before the internal.

How should unused input pins be handled?

Unused pins should be tied to VCC or GND through a resistor to prevent floating inputs and potential malfunction.