HD64F2149 Datasheet, PDF (446/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

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
0
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
1
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
2
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 Register Configuration
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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