SH7720 Datasheet, PDF (1258/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 35 I/O Ports
35.8.2 Port H Data Register (PHDR)
PHDR is a register that stores data for pins PTH6 to PTH0. Bits PH6DT to PH0DT correspond to
pins PTH6 to PTH0. When the pin function is general output port, if the port is read, the value of
the corresponding PHDR bit is returned directly. When the function is general input port, if the
port is read, the corresponding pin level is read.
Initial
Bit Bit Name Value R/W Description
7

0
R
Reserved
This bit is always read as 0. The write value should always
be 0.
6
PH6DT 0
R/W Table 35.8 shows the function of PHDR.
5
PH5DT 0
R/W
4
PH4DT 0
R/W
3
PH3DT 0
R/W
2
PH2DT 0
R/W
1
PH1DT 0
R/W
0
PH0DT 0
R/W
Table 35.8 Port H Data Register (PHDR) Read/Write Operations
PHCR State
PHnMD1 PHnMD0 Pin State
Read
Write
0
0
Other function PHDR value Value is written to PHDR, but does not affect
pin state.
1
Output
PHDR value Write value is output from pin.
1
0
Input (Pull-up Pin state
Value is written to PHDR, but does not affect
MOS on)
pin state.
1
Input (Pull-up Pin state
Value is written to PHDR, but does not affect
MOS off)
pin state.
Note: n = 0 to 6
Rev. 3.00 Jan. 18, 2008 Page 1196 of 1458
REJ09B0033-0300