HD64F2149YV datasheet(453/1075 Pages) RENESAS

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Section 15 Serial Communication Interface (SCI, IrDA)

Rev. 3.00 Jan 18, 2006 page 425 of 1044

REJ09B0280-0300

Section 15 Serial Communication Interface (SCI, IrDA)

15.1

Overview

The H8S/2169 or H8S/2149 is equipped with a 3-channel serial communication interface (SCI).

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

function is also provided for serial communication between processors (multiprocessor

communication function).

One of the three SCI channels can transmit and receive IrDA communication waveforms based on

IrDA specification version 1.0.

15.1.1

Features

SCI features are listed below.

• Choice of asynchronous or synchronous serial communication mode

Asynchronous mode

 Serial data communication is executed using an 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

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