HD6473887 Datasheet, PDF (192/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

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
1. 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.
Reading the pin for which an analog input channel is selected by the AMR CH3 to CH0 of the
A/D converter, "0" is read regardless of the input voltage.
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