HD64F2149YV datasheet(456/1075 Pages) RENESAS

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Section 15 Serial Communication Interface (SCI, IrDA)

Rev. 3.00 Jan 18, 2006 page 428 of 1044

REJ09B0280-0300

15.1.3

Pin Configuration

Table 15.1 shows the serial pins used by the SCI.

Table 15.1

SCI Pins

Channel

Pin Name

Symbol*

I/O

Function

Serial clock pin 0

SCK0

I/O

SCI0 clock input/output

Receive data pin 0

RxD0

Input

SCI0 receive data input

Transmit data pin 0

TxD0

Output

SCI0 transmit data output

Serial clock pin 1

SCK1

I/O

SCI1 clock input/output

Receive data pin 1

RxD1

Input

SCI1 receive data input

Transmit data pin 1

TxD1

Output

SCI1 transmit data output

Serial clock pin 2

SCK2

I/O

SCI2 clock input/output

Receive data pin 2

RxD2/IrRxD

Input

SCI2 receive data input

(normal/IrDA)

Transmit data pin 2

TxD2/IrTxD

Output

SCI2 transmit data output

(normal/IrDA)

Note:

The abbreviations SCK, RxD, and TxD are used in the text, omitting the channel

number.

15.1.4

The SCI has the internal registers shown in table 15.2. These registers are used to specify

asynchronous mode or synchronous mode, the data format, and the bit rate, and to control the

transmitter/receiver.

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