HD6433832S Datasheet, PDF (191/560 Pages) Renesas Technology Corp – single-chip microcomputers

8.13 Port C
8.13.1 Overview
Port C is a 4-bit input-only port, configured as shown in figure 8.12.
Port C
PC₃ /AN₁₁
PC₂ /AN₁₀
PC₁ /AN₉
PC₀ /AN₈
Figure 8.12 Port C Pin Configuration
8.13.2 Register Configuration and Description
Table 8.33 shows the port C register configuration.
Table 8.33 Port C Register
Name
Port data register C
Abbrev.
R/W
PDRC
R
Address
H'FFDF
Port Data Register C (PDRC)
Bit
7
6
5
4
3
2
1
0
—
—
—
—
PC3
PC2
PC1
PC0
Read/Write
—
—
—
—
R
R
R
R
Reading PDRC always gives the pin states. However, if a port C pin is selected as an analog input
channel for the A/D converter by AMR bits CH3 to CH0, that pin reads 0 regardless of the input
voltage.
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