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7
PC
Bit symbol
(0023H)
Read/Write
After reset
7
Bit symbol
PCCR
Read/Write
(0026H)
After reset
Function
7
Bit symbol
PCFC
(0027H)
Read/Write
After reset
Function
7
Bit symbol
Read/Write
PCODE
(0028H)
After reset
Function
Note 1: Read-modify-write is prohibited for the registers PCCR, PCFC and PCODE.
Note 2: PC1/RXD0, PC4/RXD1 pins do not have a register changing PORT/FUNCTION. For
example, when it is used as an input port, the input signal is inputted to SIO as the cereal
receive data.
Port C Register
6
5
4
PC5
PC4
Data from external port (Output latch register is set to "1".)
Port C Control Register
6
5
4
PC5C
PC4C
0
0
Port C Functon Register
6
5
4
PC5F
W
0
0: Port
1:
SCLK1
output
Port C ODE Register
6
5
4
Figure 3.5.22 Register for Port C
91C824-74
3
2
1
PC3
PC2
PC1
R/W
3
2
1
PC3C
PC2C
PC1C
W
0
0
0
0: Input
1: Output
3
2
1
PC3F
PC2F
W
W
0
0
0: Port
0: Port
1:
1:
SCLK0
TXD1
output
3
2
1
ODEPC3
W
0
TXD1
0: CMOS
1:
Open
drain
TMP91C824
0
PC0
0
PC0C
0
0
PC0F
W
0
0: Port
1:
TXD0
0
ODEPC0
W
0
TXD0
0: CMOS
1:
Open
drain
2008-02-20
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