SH7055S Datasheet, PDF (698/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

• Bits 15 to 9—Reserved: These bits are always read as 0. The write value should always be 0.
• Bit 8—PC4 Mode Bit (PC4MD): Selects the function of pin PC4/IRQ0.
Bit 8: PC4MD
0
1
Description
General input/output (PC4)
Interrupt request input (IRQ0)
(Initial value)
• Bit 7—Reserved: This bit is always read as 0. The write value should always be 0.
• Bit 6—PC3 Mode Bit (PC3MD): Selects the function of pin PC3/RxD2.
Bit 6: PC3MD
0
1
Description
General input/output (PC3)
Receive data input (RxD2)
(Initial value)
• Bit 5—Reserved: This bit is always read as 0. The write value should always be 0.
• Bit 4—PC2 Mode Bit (PC2MD): Selects the function of pin PC2/TxD2.
Bit 4: PC2MD
0
1
Description
General input/output (PC2)
Transmit data output (TxD2)
(Initial value)
• Bit 3—Reserved: This bit is always read as 0. The write value should always be 0.
• Bit 2—PC1 Mode Bit (PC1MD): Selects the function of pin PC1/RxD1.
Bit 2: PC1MD
0
1
Description
General input/output (PC1)
Receive data input (RxD1)
(Initial value)
• Bit 1—Reserved: This bit is always read as 0. The write value should always be 0.
• Bit 0—PC0 Mode Bit (PC0MD): Selects the function of pin PC0/TxD1.
Bit 0: PC0MD
0
1
Description
General input/output (PC0)
Transmit data output (TxD1)
(Initial value)
Rev.2.0, 07/03, page 660 of 960