Datasheet

Section 10 I/O Ports
Page 564 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
10.3.2 Port 3 Data Register (P3DR)
P3DR stores output data for the port 3 pins.
Bit Bit Name Initial Value R/W Description
7, 6 ⎯ All 0 ⎯ Reserved
These bits are always read as 0 and cannot be
modified.
5 P35DR 0 R/W
4 P34DR 0 R/W
3 P33DR 0 R/W
2 P32DR 0 R/W
1 P31DR 0 R/W
0 P30DR 0 R/W
Output data for a pin is stored when the pin function
is specified as a general purpose I/O.
10.3.3 Port 3 Register (PORT3)
PORT3 shows the pin states of port 3. PORT3 cannot be modified.
Bit Bit Name Initial Value R/W Description
7, 6 ⎯ Undefined ⎯ Reserved
If these bits are read, they will return an undefined
value.
5 P35 ⎯* R
4 P34 ⎯* R
3 P33 ⎯* R
2 P32 ⎯* R
1 P31 ⎯* R
0 P30 ⎯* R
If this register is read while a P3DDR bit is set to 1,
the corresponding P3DR value is read. If this
register is read while a P3DDR bit is cleared to 0,
the corresponding pin state is read.
Note: * Determined by the states of pins P35 to P30.