Section 10 Serial Communication Interface
Rev. 7.00 Mar 10, 2005 page 331 of 652
REJ09B0042-0700
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 7, 8, 5 bits
Stop bit length 1 or 2 bits
Parity Even, odd, or none
Multiprocessor bit 1 or 0
Receive error detection Parity, overrun, and framing errors
Break detection Break detected by reading the RXD
32
pin level directly when a
framing error occurs
 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 8 bits
Receive error detection Overrun errors
To Next Page
Loading...
Need help?
General
