HD6433832S Datasheet, PDF (183/560 Pages) Renesas Technology Corp – single-chip microcomputers

8.10 Port 9
8.10.1 Overview
Port 9 is an 8-bit I/O port configured as shown in figure 8.9.
Port 9
P9₇/SEG₄₀ /CL₁
P9₆/SEG₃₉ /CL₂
P9₅/SEG₃₈ /DO
P9₄/SEG₃₇ /M
P9 ₃ /SEG ₃₆
P9 ₂ /SEG ₃₅
P9 ₁ /SEG ₃₄
P9 ₀ /SEG ₃₃
Figure 8.9 Port 9 Pin Configuration
8.10.2 Register Configuration and Description
Table 8.26 shows the port 9 register configuration.
Table 8.26 Port 9 Registers
Name
Port data register 9
Port control register 9
Abbrev.
R/W
PDR9
R/W
PCR9
W
Initial Value
H'00
H'00
Address
H'FFDC
H'FFEC
Port Data Register 9 (PDR9)
Bit
Initial value
Read/Write
7
P9₇
0
R/W
6
P9₆
0
R/W
5
P9₅
0
R/W
4
P9₄
0
R/W
3
P9₃
0
R/W
2
P9₂
0
R/W
1
P9₁
0
R/W
0
P9₀
0
R/W
PDR9 is an 8-bit register that stores data for port 9 pins P9₇ to P9₀. If port 9 is read while PCR9
bits are set to 1, the values stored in PDR9 are read, regardless of the actual pin states. If port 9 is
read while PCR9 bits are cleared to 0, the pin states are read.
168