Port 3 Data Direction Register (P3Ddr); Port 3 Data Register (P3Dr) - Hitachi H8S/2215 Series Hardware Manual

• Port 3 register (PORT3)
• Port 3 open-drain control register (P3ODR)
9.2.1

Port 3 Data Direction Register (P3DDR)

The individual bits of P3DDR specify input or output for the pins of port 3.
Bit Bit Name Initial Value
−
7 Undefined
6 P36DDR 0
5 P35DDR 0
4 P34DDR 0
3 P33DDR 0
2 P32DDR 0
1 P31DDR 0
0 P30DDR 0
9.2.2

Port 3 Data Register (P3DR)

P3DR stores output data for the port 3 pins (P36 to P30).
Bit Bit Name Initial Value
−
7 Undefined
6 P36DR 0
5 P35DR 0
4 P34DR 0
3 P33DR 0
2 P32DR 0
1 P31DR 0
0 P30DR 0
R/W Description
−
Reserved
This bit is undefined and cannot be modified.
W Setting a P3DDR bit to 1 makes the corresponding port 3
pin an output pin, while clearing the bit to 0 makes the pin
W
an input pin.
W
W
W
W
W
R/W Description
−
Reserved
This bit is undefined and cannot be modified.
R/W An output data for a pin is stored when the pin function is
specified to a general purpose output port.
R/W
R/W
R/W
R/W
R/W
R/W
Rev. 3.0, 10/02, page 225 of 686