SH7011 Datasheet, PDF (262/292 Pages) Renesas Technology Corp – CMOS single-chip microprocessors

Section 15 I/O Ports (I/O)
15.1 Overview
There are two ports, A and E. The pin function controller (PFC) is used to select the function of
multiplexed pins. The ports each have one data register for storing pin data. All pins are initially
set as input port pins after a power-on reset.
15.2 Port A
Port A is a 2-pin input/output port, as shown in figure 15.1.
Port A
PA19 (input/output)
PA18 (input/output)
Figure 15.1 Port A
15.2.1 Register Configuration
Table 15.1 summarizes the port A register.
Table 15.1 Port A Register
Name
Abbreviation R/W
Port A data register H PADRH
R/W
Initial Value
H'0000
Address
H'FFFF8380
H'FFFF8381
Access Size
8, 16
255