H8SSLASH2224 datasheet(637/1071 Pages) RENESAS

637 / 1071 page

Section 15 Serial Communication Interface (SCI)

Rev. 5.00 Aug 08, 2006 page 551 of 982

REJ09B0054-0500

15.2

Input/Output Pins

Table 15.1 shows the pin configuration for each SCI channel.

Table 15.1 Pin Configuration

Channel

Pin Name*

I/O

Function

SCK0

I/O

SCI0 clock input/output

RxD0

Input

SCI0 receive data input

TxD0

Output

SCI0 transmit data output

SCK1

I/O

SCI1 clock input/output

RxD1

Input

SCI1 receive data input

TxD1

Output

SCI1 transmit data output

SCK2

I/O

SCI2 clock input/output

RxD2

Input

SCI2 receive data input

TxD2

Output

SCI2 transmit data output

SCK3

I/O

SCI3 clock input/output

RxD3

Input

SCI3 receive data input

TxD3

Output

SCI3 transmit data output

Notes: 1. Pin names SCK, RxD, and TxD are used in the text for all channels, omitting the

channel designation.

2. The channel is not provided for the H8S/2227 Group.

15.3

The SCI has the following registers for each channel. For details on register addresses and register

states during each process, refer to appendix A, Internal I/O Register. The serial mode register

(SMR), serial status register (SSR), and serial control register (SCR) are described separately for

normal serial communication interface mode and Smart Card interface mode because their bit

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