SH7751 Datasheet, PDF (855/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

18. I/O Ports
Table 18.2 shows the SCI I/O port pin configuration.
Table 18.2 SCI I/O Port Pins
Pin Name
Abbreviation
I/O
Function
Serial clock pin
SCK
I/O
Clock input/output
Receive data pin
RxD
Input
Receive data input
Transmit data pin
TxD
Output
Transmit data output
Note: They are made to function as serial pins by performing SCI operation settings with the TE,
RE, CKEI, and CKE0 bits in SCSCR1 and the C/A bit in SCSMR1. Break state transmission
and detection can be performed by means of a setting in the SCI's SCSPTR1 register.
Table 18.3 shows the SCIF I/O port pin configuration.
Table 18.3 SCIF I/O Port Pins
Pin Name
Abbreviation
I/O
Function
Serial clock pin
MD0/SCK2
I/O
Clock input/output
Receive data pin
MD2/RxD2
Input
Receive data input
Transmit data pin
Modem control pin
Modem control pin
MD1/TxD2
MD7/CTS2
MD8/RTS2
Output
I/O
I/O
Transmit data output
Transmission enabled
Transmission request
Note:
These pins function as the MD0, MD1, MD2, MD7, and MD8 mode input pins after a power-
on reset. These pins are made to function as serial pins by performing SCIF operation
settings with the TE, RE, CKE1, and CKE0 bits in SCSCR2 and the MCE bit in SCFCR2.
Break state transmission and detection can be set in the SCIF's SCSPTR2 register.
Rev.4.00 Oct. 10, 2008 Page 757 of 1122
REJ09B0370-0400