UPD784938 Datasheet, PDF (429/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 18 ASYNCHRONOUS SERIAL INTERFACE/3-WIRE SERIAL I/O
18.2 Asynchronous Serial Interface Mode
A UART (Universal Asynchronous Receiver Transmitter) is incorporated as the asynchronous serial interface. With this
method, one byte of data is transmitted following a start bit, and full-duplex operation is possible.
A baud rate generator is incorporated, enabling communication to be performed at any of a wide range of baud rates.
Also, the baud rate can be defined by scaling the clock input to the ASCK pin.
18.2.1 Configuration in asynchronous serial interface mode
The block diagram of the asynchronous serial interface is described in Figure 18-2.
See 18.4 Baud Rate Generator for details of the baud rate generator.
Preliminary User’s Manual U13987EJ1V0UM00
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