RX610 Group
14. I/O Ports
R01UH0032EJ0120 Rev.1.20
Page 428 of 1006
Feb 20, 2013
14.3.13
Port C (PC)
(1) PC0/A16
The pin function is switched as shown below according to the combination of the external bus enable bit (EXBE) in the
system control register 0 (SYSCR0), the register setting for the bus controller, the port function control register m
(PFCRm) setting, and the B0 bit in PC.DDR
Module Name
Pin Function
Setting
Bus Controller
I/O Port
A16_OE
PC.DDR.B0
Bus controller
A16 output
*
1
I/O port
PC0 output
0
1
PC0 input (initial value)
0
0
Note:
*
Enabled in expansion mode with on-chip ROM disabled or disabled (SYSCR0.EXBE = 1).
(2) PC1/A17
The pin function is switched as shown below according to the combination of the EXBE bit in SYSCR0, the rgister
settings for the bus controller, the port function control register m (PFCRm) setting, and the B1 bit in PC.DDR.
Module Name
Pin Function
Setting
Bus Controller
I/O Port
A17_OE
PC.DDR.B1
Bus controller
A17 output
*
1
I/O port
PC1output
0
1
PC1 input (initial value)
0
0
Note:
*
Enabled in expansion mode with on-chip ROM disabled or disabled (SYSCR0.EXBE = 1).
(3) PC2/A18
The pin function is switched as shown below according to the combination of the EXBE bit in SYSCR0, the rgister
setting for the bus controller, the port function control register m (PFCRm) setting, and the B2 bit in PC.DDR.
Module Name
Pin Function
Setting
Bus Controller
I/O Port
A18_OE
PC.DDR.B2
Bus controller
A18 output
*
1
I/O port
PC2 output
0
1
PC2 input (initial value)
0
0
Note:
*
Enabled in expansion mode with on-chip ROM disabled or disabled (SYSCR0.EXBE = 1).