8.2
Port 1
8.2.1
Overview
Port 1 is a 4-bit I/O port. Figure 8.1 shows its pin configuration.
Note: * Pin 16 and the associated function are not implemented on the H8/38124 Group.
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 mode register 2
Port 1
Figure 8.1 Port 1 Pin Configuration
Abbr.
PDR1
PCR1
PUCR1
PMR1
PMR2
P1
/IRQ
/TMIF
7
3
*
P1
6
P1
/IRQ
/ADTRG
4
4
P1
/TMIG
3
R/W
Initial Value
R/W
—
W
—
R/W
—
R/W
—
R/W
H'D8
Rev. 6.00, 08/04, page 189 of 628
Address
H'FFD4
H'FFE4
H'FFE0
H'FFC8
H'FFC9