HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 190

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

8.4
8.4.1
Port 3 is a 8-bit I/O port, configured as shown in figure 8.3.
8.4.2
Table 8.8 shows the port 3 register configuration.
Table 8.8
Name
Port data register 3
Port control register 3
Port pull-up control register 3
Port mode register 3
Port mode register 7
Port Data Register 3 (PDR3)
Note: * Bits 7 to 3 are reserved; they are always read as 0 and cannot be modified.
182
Bit
Initial value
Read/Write
Port 3
Overview
Register Configuration and Description
Port 3 Registers
—
0*
—
7
Figure 8.3 Port 3 Pin Configuration
—
0*
—
6
Port 3
Abbrev.
PDR3
PCR3
PUCR3
PMR3
PMR7
—
0*
—
5
R/W
R/W
W
R/W
R/W
R/W
—
0*
—
4
P3 /SO
P3 /SI
P3 /SCK
2
1
0
—
0*
—
Initial Value
H'00
H'00
H'00
H'00
H'F8
3
1
1
1
R/W
P3
2
0
2
R/W
P3
Address
H'FFD6
H'FFE6
H'FFEE
H'FFFD
H'FFFF
1
0
1
R/W
P3
0
0
0