Renesas H8 Series

Section 8 I/O Ports
Rev. 7.00 Mar 10, 2005 page 202 of 652
REJ09B0042-0700
8.3 Port 3
8.3.1 Overview
Port 3 is an 8-bit I/O port, configured as shown in figure 8.2.
P3 /AEVL
P3 /AEVH
P3
7
6
5
Port 3
P3
P3
P3 /TMOFH
4
3
2
P3 /TMOFL
1
P3 /UD
0
Figure 8.2 Port 3 Pin Configuration
8.3.2 Register Configuration and Description
Table 8.5 shows the port 3 register configuration.
Table 8.5 Port 3 Registers
Name Abbr. R/W Initial Value Address
Port data register 3 PDR3 R/W H'00 H'FFD6
Port control register 3 PCR3 W H'00 H'FFE6
Port pull-up control register 3 PUCR3 R/W H'00 H'FFE1
Port mode register 2 PMR2 R/W H'D8 H'FFC9
Port mode register 3 PMR3 R/W — H'FFCA