Section 10 Serial Communication Interface; Overview; Features - Renesas H8 Series Hardware Manual

Section 10 Serial Communication Interface

10.1

Overview

The H8/38024 Group is provided with one serial communication interface, SCI3.
Serial communication interface 3 (SCI3) can carry out serial data communication in either
asynchronous or synchronous mode. It is also provided with a multiprocessor communication
function that enables serial data to be transferred among processors.
10.1.1

Features

Features of SCI3 are listed below.
• Choice of asynchronous or synchronous mode for serial data communication
 Asynchronous mode
Serial data communication is performed asynchronously, with synchronization provided
character by character. In this mode, serial data can be exchanged with standard
asynchronous communication LSIs such as a Universal Asynchronous
Receiver/Transmitter (UART) or Asynchronous Communication Interface Adapter
(ACIA). A multiprocessor communication function is also provided, enabling serial data
communication among processors.
There is a choice of 16 data transfer formats.
Data length
Stop bit length
Parity
Multiprocessor bit
Receive error detection
Break detection
 Synchronous mode
Serial data communication is synchronized with a clock. In this mode, serial data can be
exchanged with another LSI that has a synchronous communication function.
Data length
Receive error detection
7, 8, 5 bits
1 or 2 bits
Even, odd, or none
1 or 0
Parity, overrun, and framing errors
Break detected by reading the RXD
framing error occurs
8 bits
Overrun errors
Section 10 Serial Communication Interface
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Rev. 7.00 Mar 10, 2005 page 331 of 652
REJ09B0042-0700