This document provides the user's manual for the 78K0/FE2 8-bit single-chip microcontrollers, including models such as μPD78F0887(A), μPD78F0887(A2), μPD78F0888(A), μPD78F0888(A2), μPD78F0889(A), μPD78F0889(A2), μPD78F0890(A), and μPD78F0890(A2). The microcontrollers feature an on-chip debug function, but it is not recommended to use this function for mass production due to limitations on the number of times the flash memory can be rewritten, which may affect reliability. The document also discusses waveform distortion issues related to input pin voltage application and the potential malfunction caused by unused input pins.
This manual is intended for engineers who need to understand the functions of the NEC 78KO/FE2 8‑bit single‑chip microcontrollers and develop applications and programs for them. It covers the product lineup, quality grades, and the overall organization of the documentation.
The document details pin configurations, CPU architecture, memory spaces, register definitions, instruction set, and important handling precautions such as ESD protection, unused pin treatment, and proper power‑on/off sequencing.
No. The document states that reliability cannot be guaranteed after using the on‑chip debug function, so it should not be used for mass production.
Store and transport the devices in anti‑static containers or shielding bags, keep the work area humidified, ground work benches and tools, and wear a wrist strap to stay grounded.