TMP91C824
91C824-72
Port C Register
7
6
5
4
3
2
1
0
bit Symbol
PC5
PC4
PC3
PC2
PC1
PC0
Read/Write
R/W
Input mode
After Reset
1
1
1
1
1
1
Port C Control Register
7
6
5
4
3
2
1
0
bit Symbol
PC5C
PC4C
PC3C
PC2C
PC1C
PC0C
Read/Write
W
0
0
0
0
0
0
After Reset
0: IN
1: OUT
Port C Functon Register
7
6
5
4
3
2
1
0
bit Symbol
PC5F
PC3F
PC2F
PC0F
Read/Write
W
W
W
W
After Reset
0
0
0
0
Function
0: PORT
1:
SCLK1
Output
0: PORT
1:
TXD1
0: PORT
1:
SCLK0
Out put
0: PORT
1:
TXD0
Port C ODE Register
7
6
5
4
3
2
1
0
bit Symbol
ODEPC3
ODEPC0
Read/Write
W
W
After Reset
0
0
Function
TXD1
0: CMOS
1:
Open
Drain
TXD0
0: CMOS
1:
Open
Drain
PCFC
(0027H)
PC
(0023H)
PCCR
(0026H)
PCODE
(0028H)
(note1): Read-Modify-Write is prohibited for the registers PCCR, PCFC and PCODE.
(note2): 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.
Figure 3.5.22 Register for Port C