Hitachi H8/3937 Series Hardware Manual page 475

PUCR1—Port pull-up control register 1
Bit 7
PUCR1
Initial value 0
Read/Write R/W
PUCR3—Port pull-up control register 3
Bit 7
PUCR3
Initial value 0
Read/Write R/W
6 5
PUCR1 PUCR1
7 6 5
0 0
R/W R/W
6 5
PUCR3 PUCR3
7 6 5
0 0
R/W R/W
H'E0
4 3
PUCR1 PUCR1 PUCR1
4 3
0 0
R/W R/W
Port 1 input pull-up MOS control
0 Input pull-up MOS is off
1 Input pull-up MOS is on
Note: When the PCR1 specification is 0
(input port specification)
H'E1
4 3
PUCR3 PUCR3 PUCR3
4 3
0 0
R/W R/W
Port 3 input pull-up MOS control
0 Input pull-up MOS is off
1 Input pull-up MOS is on
Note: When the PCR3 specification is 0
(input port specification)
I/O ports
2 1
PUCR1 PUCR1
2 1
0 0
R/W R/W R/W
I/O ports
2 1
PUCR3 PUCR3
2 1
0 0
R/W R/W R/W
0
0
0
0
0
0
463