HD6473032F16 Datasheet, PDF (281/847 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Section 9 I/O Ports
P1DDR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode
it retains its previous setting. If a P1DDR bit is set to 1, the corresponding pin maintains its output
state in software standby mode.
Port 1 Data Register (P1DR)
P1DR is an 8-bit readable/writable register that stores port 1 output data. When this register is
read, the pin logic level of a pin is read for bits for which the P1DDR setting is 0, and the P1DR
value is read for bits for which the P1DDR setting is 1.
Bit
Initial value
Read/Write
7
P1₇
0
R/W
6
5
4
3
2
P1₆
P1₅
P1₄
P1₃
P1₂
0
0
0
0
0
R/W R/W R/W R/W R/W
1
P1₁
0
R/W
0
P1₀
0
R/W
Port 1 data 7 to 0
These bits store data for port 1 pins
P1DR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode it
retains its previous setting.
Rev. 3.00 Mar 21, 2006 page 251 of 814
REJ09B0302-0300