Full-Duplex Uart Communication; Communication Form - Panasonic MN101L Series User Manual

Chapter 13
Serial Interface

13.4 Full-duplex UART Communication

This chapter describes a full-duplex UART communication.
The index "n" of serial interface denotes "n = 0, 1", unless otherwise noted.
When communicating with UART by using SCIFn, set SCnMD1.SCnCMD to "1".
13.4.1

Communication Form

1-wire UART
Data is transmitted or received by using either TXDn or RXDn.
TXDn is used for both data transmission and reception. RXDn is used for data reception only.
2-wire UART (full-duplex UART)
Data are transmitted and received with 2-wire communication by using both TXDn and RXDn.
TXDn is used for data transmission and RXDn is used for data reception.
Be sure to set the data frame and parity bit on the transmission/reception data to the same setting.
When the serial communication is not executed, set data reception pin to "High" level.
Otherwise, SCIFn does not work properly.
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