Datasheet

Section 8 I/O Ports
Rev. 6.00 Aug 04, 2006 page 205 of 680
REJ09B0145-0600
8.2 Port 1
8.2.1 Overview
Port 1 is an 8-bit I/O port. Figure 8.1 shows its pin configuration.
P1 /IRQ /TMIF
P1 /IRQ
P1 /IRQ /TMIC
P1 /IRQ /ADTR
G
P1 /TMIG
7
6
5
4
3
3
2
1
4
Port 1
P1 /TMOFH
P1 /TMOFL
P1 /TMOW
2
1
0
Figure 8.1 Port 1 Pin Configuration
8.2.2 Register Configuration and Description
Table 8.2 shows the port 1 register configuration.
Table 8.2 Port 1 Registers
Name Abbr. R/W Initial Value Address
Port data register 1 PDR1 R/W H'00 H'FFD4
Port control register 1 PCR1 W H'00 H'FFE4
Port pull-up control register 1 PUCR1 R/W H'00 H'FFE0
Port mode register 1 PMR1 R/W H'00 H'FFC8