SH7764 Datasheet, PDF (1424/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 27 General Purpose I/O (GPIO)
27.2.11 Port A Data Register (PTDAT_A)
PTDAT_A is a 16-bit readable/writable register that stores port A data.
Bit: 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0








PTDAT_ PTDAT_ PTDAT_ PTDAT_ PTDAT_ PTDAT_ PTDAT_ PTDAT_
A7
A6
A5
A4
A3
A2
A1
A0
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R R/W R/W R/W R/W R/W R/W R/W R/W
Bit
15 to 8
Bit Name

7
PTDAT_A7
6
PTDAT_A6
5
PTDAT_A5
4
PTDAT_A4
3
PTDAT_A3
2
PTDAT_A2
1
PTDAT_A1
0
PTDAT_A0
Initial Value R/W
All 0
R
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
Description
Reserved
The lower 8-bit value is always read from
these bits. The write value should always be
0.
Each bit stores output data of a pin used as a
general output port.
When the pin is used as a general output
port, if the port is read, the value of the
corresponding bit in this register will be read.
When the pin is used as a general input port,
if this register is read, the status of the
corresponding pin will be read.
Rev. 1.00 Nov. 22, 2007 Page 1368 of 1692
REJ09B0360-0100