H8SSLASH2214 datasheet(513/936 Pages) RENESAS

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Section 12 Serial Communication Interface (SCI)

Rev.4.00 Sep. 18, 2008 Page 453 of 872

REJ09B0189-0400

Section 12 Serial Communication Interface (SCI)

12.1

Overview

The H8S/2214 Group is equipped with mutually independent serial communication interface (SCI)

channels. The SCI can handle both asynchronous and clocked synchronous serial communication.

A function is also provided for serial communication between processors (multiprocessor

communication function).

SCI0 allows a choice of 720 kbps, 460.784 kbps, or 115.192 kbps at 16-MHz operation.

12.1.1

Features

SCI features are listed below.

• Choice of asynchronous or clocked synchronous serial communication mode

Asynchronous mode

⎯ Serial data communication executed using asynchronous system in which synchronization

is achieved character by character

Serial data communication can be carried out with standard asynchronous communication

chips such as a Universal Asynchronous Receiver/Transmitter (UART) or Asynchronous

Communication Interface Adapter (ACIA)

⎯ A multiprocessor communication function is provided that enables serial data

communication with a number of processors

⎯ Choice of 12 serial data transfer formats

Data length

: 7 or 8 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 can be detected by reading the RxD pin level directly in

case of a framing error

⎯ Average transfer rate generator (SCI0): 720 kbps, 460.784 kbps, or 115.192 kbps can be

selected at 16 MHz

⎯ A transfer rate clock can be input from the TPU (SCI0)

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