Key facts
- Brand
- NEC
- Model
- KA1
- Industry
- Industrial
- Documents
- 2
- Languages
- EN · ZH
- Last added
- 2012-05-03
Start here

NEC 78K0S/KA1+ 8-bit Single-Chip Microcontrollers User Manual
This manual is intended for engineers who need to understand the functions of the 78K0S/KA1+ microcontroller family and develop application systems and programs. It covers the target sub‑series devices (UPD78F9221, UPD78F9222, and their variants) and explains how to read registers, use the instruction set, and access related development tools.
Key sections include pin function tables, CPU architecture details, electrical specifications, flash‑memory programming tools, and revision history. The document also provides handling precautions such as ESD protection, unused‑pin treatment, and recommended power‑on/off sequences.
NEC KA1 specifications
| Supported devices | 78K0/KE2, 78K0S/KA1+, 78K0S/KB1+, 78K0S/KU1+, 78K0S/KY1+ |
|---|---|
| Release date | November 2007 |
| Software version | Applilet EZ PL Ver.3.1 |
Source: NEC Applilet EZ PL Ver.3.1 78K0/KE2 78K0S/KA1+ 78K0S/KB1+ 78K0S/KU1+ 78K0S/KY1+ device user manual
All NEC KA1 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
Which microcontroller families are supported by Applilet EZ PL Ver.3.1?
It supports the 78K0/KE2 and 78K0S/Kx1+ series devices.
From: NEC Applilet EZ PL Ver.3.1 78K0/KE2 78K0S/KA1+ 78K0S/KB1+ 78K0S/KU1+ 78K0S/KY1+ device user manual
What is the purpose of this manual?
The manual helps users understand the operation method and functions of Applilet EZ PL Ver.3.1 for designing applications with the listed microcontrollers.
From: NEC Applilet EZ PL Ver.3.1 78K0/KE2 78K0S/KA1+ 78K0S/KB1+ 78K0S/KU1+ 78K0S/KY1+ device user manual
