H838532H datasheet(305/508 Pages) RENESAS

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Section 10 Serial Communication Interface

Rev. 1.00 May 30, 2008 Page 285 of 484

REJ09B0436-0100

Section 10 Serial Communication Interface

10.1

Overview

This LSI is provided with two serial communication interfaces, SCI3-1 and SCI3-2. These two

SCIs have identical functions. In this manual, the generic term SCI3 is used to refer to both SCIs.

Serial communication interface 3 (SCI3) can carry out serial data communication in either

asynchronous or synchronous mode.

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).

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

Receive error detection

Parity, overrun, and framing errors

Break detection

Break detected by reading the RXD

3x pin level directly when a

framing error occurs

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