HD64336900G Datasheet, PDF (159/408 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

9.7.1 Port Control Register C (PCRC)
PCRC selects inputs/outputs in bit units for pins to be used as general I/O ports of port C.
Initial
Bit
Bit Name Value R/W Description
7 to 2 


Reserved
1
PCRC1 0
0
PCRC0 0
W
When each of the port C pins, PC1 and PC0, functions as
W
an general I/O port, setting a PCRC bit to 1 makes the
corresponding pin an output port, while clearing the bit to
0 makes the pin an input port.
9.7.2 Port Data Register C (PDRC)
PDRC is a general I/O port data register of port C.
Initial
Bit
Bit Name Value R/W Description
7 to 2 


Reserved
1
PC1
0
R/W These bits store output data for port C pins.
0
PC0
0
R/W If PDRC is read while PCRC bits are set to 1, the value
stored in PDRC is read. If PDRC is read while PCRC bits
are cleared to 0, the pin states are read regardless of the
value stored in PDRC.
9.7.3 Pin Functions
The correspondence between the register specification and the port functions is shown below.
• PC1/OSC2/CLKOUT pin
Register
CKCSR
Bit Name
PMRC1
PMRC0
Setting value 0
X
1
0
1
[Legend]
X: Don't care
PCRC
PCRC1
0
1
X
X
Pin Function
PC1 input pin
PC1 output pin
CLKOUT output pin
OSC2 oscillation pin
Rev. 1.00, 11/03, page 131 of 376