HD64F3039F18 Datasheet, PDF (177/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 7 I/O Ports
7.5.2 Register Descriptions
Table 7.6 summarizes the registers of port 5.
Table 7.6 Port 5 Registers
Address* Name
Abbreviation R/W
H'FFC8
Port 5 data direction P5DDR
W
register
H'FFCA Port 5 data register P5DR
R/W
H'FFDB Port 5 input pull-up P5PCR
R/W
control register
Note: * Lower 16 bits of the address.
Initial Value
Modes 1 and 3 Modes 5 to 7
H'FF
H'F0
H'F0
H'F0
H'F0
H'F0
Port 5 Data Direction Register (P5DDR)
P5DDR is an 8-bit write-only register that can select input or output for each pin in port 5.
Bit
7
6
5
—
—
—
Modes ^{Initial value 1}
1
1
1 and 3 _{Read/Write —}
—
—
Modes ^{Initial value 1}
1
1
5 to 7 _{Read/Write —}
—
—
Reserved bits
4
3
2
1
0
— P5₃DDR P5₂DDR P5₁DDR P5₀DDR
1
1
1
1
1
—
—
—
—
—
1
0
0
0
0
—
W
W
W
W
Port 5 data direction 3 to 0
These bits select input or
output for port 5 pins
P5DDR is initialized to H'F0 by a reset and in hardware standby mode. In software standby mode
it retains its previous setting. If a P5DDR bit is set to 1, the corresponding pin maintains its output
state in software standby mode.
Rev.3.00 Mar. 26, 2007 Page 153 of 682
REJ09B0353-0300