This manual describes an example program that demonstrates full‑duplex communication using the UART6 serial interface of the NEC 78K0S/Kx1+ microcontroller. It explains initial configuration, operation flow, and how to send four characters for each received character, including error handling.
The document includes circuit diagrams, software file listings, configuration steps for UART6, and verification procedures. It also provides contact information for NEC technical support in China. This manual is written in Chinese.
| UART6 baud rate | 9600 bps |
|---|---|
| UART6 data bits | 7 bits |
| UART6 parity | Even |
| UART6 stop bits | 1 |
| CPU clock frequency | 8 MHz |
| Operating voltage range | 4.5 V – 5.5 V |
| Low‑voltage detection threshold | 4.3 V ± 0.2 V |
The UART6 interface is configured for a baud rate of 9600 bps.
The program sends four characters for each received character, and also sends four characters when an error is detected.
The device operates with an input voltage between 4.5 V and 5.5 V.