135
8.2
Port 1
8.2.1
Overview
Port 1 is a 8-bit I/O port. Figure 8.1 shows its pin configuration.
P1 /IRQ /TMIF
P1 /IRQ
P1 /IRQ /TMIC
P1 /
IRQ
/
ADTRG
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
Abbrev.
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