SH7641 Datasheet, PDF (911/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

Section 23 I/O Ports
23.8.2 Port H Data Register (PHDR)
PHDR is a 15-bit readable/writable register with one reserved bit that stores data for pins PTH14
to PTH0. PHDR is initialized to H'0000 by a power-on reset, but it retains its previous value by a
manual reset, in standby mode, or in sleep mode.
Initial
Bit
Bit Name Value R/W Description
15

0
R Reserved
This bit is always read as 0. The write value should
always be 0.
14
PH14DT 0
13
PH13DT 0
12
PH12DT 0
11
PH11DT 0
10
PH10DT 0
9
PH9DT
0
R/W Bits PH14DT to PH0DT correspond to pins PTH14 to
R/W ^{PTH0. When the pin function is general output port, the}
value of the corresponding bit in PHDR is returned
R/W _{directly by reading the port. When the function is}
R/W ^{general input port, the corresponding pin level is read}
by reading the port. Table 23.11 shows the function of
R/W _PHDR.
R/W
8
PH8DT
0
R/W
7
PH7DT
0
R/W
6
PH6DT
0
R/W
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
Rev. 4.00 Sep. 14, 2005 Page 861 of 982
REJ09B0023-0400