HD64F2357VF13 Datasheet, PDF(495/1049 Page) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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HD64F2357VF13 Datasheet, PDF (495/1049 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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Section 14 Serial Communication Interface (SCI)

14.1 Overview

The H8S/2357 Group is equipped with a three-channel serial communication interface (SCI). All three channels have the

same functions. The SCI can handle both asynchronous and clocked synchronous serial communication. A function is also

provided for serial communication between processors (multiprocessor communication function).

14.1.1 Features

SCI features are listed below.

â¢ Choice of asynchronous or clocked synchronous serial communication mode

Asynchronous mode

ï£§ Serial data communication executed using asynchronous system in which synchronization is achieved character by

character

ï£§ 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)

ï£§ A multiprocessor communication function is provided that enables serial data communication with a number of

processors

ï£§ 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

ï£§ Receive error detection : Parity, overrun, and framing errors

ï£§ Break detection

: Break can be detected by reading the RxD pin level

directly in case of a framing error

Clocked Synchronous mode

ï£§ Serial data communication synchronized with a clock

ï£§ Serial data communication can be carried out with other chips that have a synchronous communication function

ï£§ One serial data transfer format

Data length

: 8 bits

ï£§ Receive error detection : Overrun errors detected

â¢ Full-duplex communication capability

ï£§ The transmitter and receiver are mutually independent, enabling transmission and reception to be executed

simultaneously

ï£§ Double-buffering is used in both the transmitter and the receiver, enabling continuous transmission and continuous

reception of serial data

â¢ Choice of LSB-first or MSB-first transfer

ï£§ Can be selected regardless of the communication mode* (except in the case of 7-bit data asynchronous mode)

â¢ On-chip baud rate generator allows any bit rate to be selected

â¢ Choice of serial clock source

ï£§ Internal clock from baud rate generator or external clock from SCK pin

Rev.6.00 Oct.28.2004 page 465 of 1016

REJ09B0138-0600H

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