h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 988

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Appendix B Internal I/O Registers
P3DDR—Port 3 Data Direction Register
P4DDR—Port 4 Data Direction Register
P3DR—Port 3 Data Register
P4DR—Port 4 Data Register
Rev. 4.00 Jun 06, 2006 page 934 of 1004
REJ09B0301-0400
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
P37DDR
P47DDR
P37DR
P47DR
R/W
R/W
W
W
7
0
7
0
7
0
7
0
P36DDR
P46DDR
P36DR
P46DR
R/W
R/W
W
W
6
0
6
0
6
0
6
0
Specification of input or output for port 3 pins
Specification of input or output for port 4 pins
P35DDR
P45DDR
P35DR
P45DR
R/W
R/W
W
W
5
0
5
0
5
0
5
0
Output data for port 3 pins
Output data for port 4 pins
P34DDR
P44DDR
P34DR
P44DR
R/W
R/W
W
W
4
0
4
0
4
0
4
0
P33DDR
P43DDR
P33DR
P43DR
H'FFB4
H'FFB5
H'FFB6
H'FFB7
R/W
R/W
W
W
3
0
3
0
3
0
3
0
P32DDR
P42DDR
P32DR
P42DR
R/W
R/W
W
W
2
0
2
0
2
0
2
0
P31DDR
P41DDR
P31DR
P41DR
R/W
R/W
W
W
1
0
1
0
1
0
1
0
P30DDR
P40DDR
P30DR
P40DR
R/W
R/W
W
W
0
0
0
0
0
0
0
0
Port 3
Port 4
Port 3
Port 4