Port 4; Overview; Register Configuration And Description - Renesas F-ZTAT H8 Series Hardware Manual

8. I/O Ports
8.5

Port 4

Port 4 functions are common to the H8/3857 Group and H8/3854 Group.
8.5.1

Overview

Port 4 consists of a 3-bit I/O port and a 1-bit input port, and is configured as shown in figure 8.4.
8.5.2

Register Configuration and Description

Table 8.11 shows the port 4 register configuration.
Table 8.11 Port 4 Registers
Name
Port data register 4
Port control register 4
Rev.3.00 Jul. 19, 2007 page 194 of 532
REJ09B0397-0300
Port 4
Figure 8.4 Port 4 Pin Configuration
Abbr. R/W
PDR4 R/W
PCR4 W
P4 /IRQ
3 0
P4 /TXD
2
P4 /RXD
1
P4 /SCK
3
0
Initial Value
H'F8
H'F8
Address
H'FFD7
H'FFE7