SH7785 Datasheet, PDF (1462/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

28. General Purpose I/O Ports (GPIO)
28.2.31 Port Q Data Register (PQDR)
PQDR is an 8-bit readable/writable register that stores port Q data.
Bit:
Initial value:
R/W:
7
—
0
R/W
6
—
0
R/W
5
4
3
2
1
0
— PQ4DT PQ3DT PQ2DT PQ1DT PQ0DT
0
0
0
0
0
0
R/W R/W R/W R/W R/W R/W
Initial
Bit
Bit Name value R/W Description
7 to 5 ⎯
All 0 R/W Reserved
These bits are always read as 0, and the write value
should always be 0.
4
PQ4DT
0*
R/W These bits store output data of a pin which is used as a
3
PQ3DT
0*
R/W ^{general-purpose output port. When the pin functions as}
a general-purpose output port, reading the port will read
2
PQ2DT
0*
R/W _{out the value of the corresponding bit of this register.}
1
PQ1DT
0*
R/W When the pin functions as a general-purpose input port,
0
PQ0DT
0*
R/W ^{reading the port will read out the status of the}
corresponding pin.
Note: * When the bus mode is set to the local bus or DU via the bus mode pins (MODE11 and
MODE12), the pin is initially used as a general-purpose input, and the pin status is read
from this register.
Rev.1.00 Jan. 10, 2008 Page 1432 of 1658
REJ09B0261-0100