HD6433937 Datasheet, PDF (182/521 Pages) Hitachi Semiconductor – Hardware Manual

8.10 Port 9
8.10.1 Overview
Port 9 is a 4-bit I/O port. Figure 8-9 shows its pin configuration.
P9₃
Port 9
P9₂
P9₁
P9₀
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
R
Initial Value
H'00
H'F0
Address
H'FFDC
H'FFEC
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