Key facts
- Brand
- NEC
- Model
- KX1
- Documents
- 4
- Languages
- ZH
- Last added
- 2011-11-19
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NEC 78K0S/Kx1+ User Manual
This document provides an overview of the example program that demonstrates full‑duplex communication via the UART6 serial interface on NEC 78K0S/Kx1+ microcontrollers. It explains the initial configuration, the operation flow, and how to verify the program on the device.
The manual is organized into sections covering the circuit diagram, software components, configuration methods, operation verification, and related documents. Appendices contain the program source listing and revision history. This manual is written in Chinese.
NEC KX1 specifications
| CPU clock frequency | 8 MHz |
|---|---|
| Internal high‑speed oscillator | Used as system clock source |
| Watchdog timer | Stopped |
| Low‑voltage detection (LVI) threshold | 4.3 V ± 0.2 V |
| Vpp operating range | 4.5 V – 5.5 V |
| Timer clock source | fX/22 (2 MHz) |
| Delay time before pulse | 1 ms |
| Single‑pulse width | 10 ms |
Source: NEC 78K0S/Kx1+ User Manual
All NEC KX1 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What clock frequency should be set for the CPU?
The CPU clock frequency is set to 8 MHz.
How is the single‑pulse output generated?
When a rising edge is detected on the TI000 pin, the program waits the configured delay (1 ms) and then outputs a single pulse of the configured width (10 ms).
What baud rate is configured for UART6 in the example program?
The UART6 interface is set to a baud rate of 9600 bps.
How many characters are transmitted for each received character?
The program sends four characters for each received character.
What baud rate is used for UART6 in the example program?
The UART6 interface is configured for a baud rate of 9600 bps.
How many characters are transmitted for each received character?
The program sends four characters for each received character, and also sends four characters when an error is detected.