HD6417705 Datasheet, PDF (572/739 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

• SCP0DR and SCP2DR
SCPCR State
SCPnMD1 SCPnMD0 Pin State
Read
Write
0
0
Other function
Prohibited
Prohibited
1
TxD: Output
SCPDR value Written data is output on TxD pin.
RxD: Input (cannot be
read)
1
0
TxD: Output high RxD pin state Data can be written to SCPDR but
impedance
no effect on pin state.
RxD: Input (Pull-up
MOS on)
1
TxD: Output high RxD pin state Data can be written to SCPDR but
impedance
no effect on pin state.
RxD: Input (Pull-up
MOS off)
Note: n = 0 and 2
The operations are not guaranteed when read and write operations are prohibited.
Rev. 2.00, 09/03, page 526 of 690