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8.2
Port 1
8.2.1
Overview
Port 1 is an 8-bit I/O port. Figure 8-1 shows its 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
Port data register 1
Port control register 1
Port pull-up control register 1
Port mode register 1
Port 1
Figure 8-1 Port 1 Pin Configuration
Abbrev.
PDR1
PCR1
PUCR1
PMR1
P1 /IRQ /TMIF
7
3
P1 /IRQ
6
2
P1 /IRQ /TMIC
5
1
P1 /IRQ /ADTRG
4
4
P1 /TMIG
3
P1 /TMOFH
2
P1 /TMOFL
1
P1 /TMOW
0
R/W
Initial Value
R/W
H'00
W
H'00
R/W
H'00
R/W
H'00
Address
H'FFD4
H'FFE4
H'FFE0
H'FFC8
135
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