Port H Data Register (Phdr); Port H Register (Porth) - Hitachi H8S/2378, H8S/2378R Series Hardware Manual

10.16.2 Port H Data Register (PHDR)

PHDR stores output data for the port H pins.
Bit Bit Name
7 —
to
4
3 PH3DR
2 PH2DR
1 PH1DR
0 PH0DR

10.16.3 Port H Register (PORTH)

PORTH shows port H pin states.
PORTH cannot be modified.
Bit Bit Name
7 —
to
4
3 PH3
2 PH2
1 PH1
0 PH0
Note: Determined by the states of pins PH3 to PH0.
Rev. 1.0, 09/01, page 490 of 904
Initial Value R/W
0 —
0 R/W
0 R/W
0 R/W
0 R/W
Initial Value R/W
Undefined —
—* R
—* R
—* R
—* R
Description
Reserved
These bits are reserved; they are always read as 0
and cannot be modified.
Output data for a pin is stored when the pin function
is specified to a general purpose I/O.
Description
Reserved
If these bits are read, they will return an undefined
value.
If a port H read is performed while PHDDR bits are
set to 1, the PHDR values are read. If a port H read
is performed while PHDDR bits are cleared to 0, the
pin states are read.