SH7730 Datasheet, PDF (937/1188 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7780 Series

Section 28 I/O Port
28.3.1 Port B Data Register (PBDR)
PBDR is a register that stores data for pins PTB7 to PTB0. Bits PB7DT to PB0DT correspond to
pins PTB7 to PTB0. For pins that function as general-purpose output pins, a read operation
directly reads out the corresponding value from this register. For pins that function as general-
purpose input pins, a read operation reads out the level on the corresponding pin.
Bit: 7
6
5
4
3
2
1
0
PB7DT PB6DT PB5DT PB4DT PB3DT PB2DT PB1DT PB0DT
Initial value: 0
0
0
0
0
0
0
0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W
Initial
Bit
Bit Name Value R/W Description
7
PB7DT
0
R/W Table 28.4 shows the function of PBDR.
6
PB6DT
0
R/W
5
PB5DT
0
R/W
4
PB4DT
0
R/W
3
PB3DT
0
R/W
2
PB2DT
0
R/W
1
PB1DT
0
R/W
0
PB0DT
0
R/W
Table 28.4 Port B Data Register (PBDR) Read/Write Operations
PBCR State
PBnMD1 PBnMD0
0
0
Pin State
Other function
1
1
0
1
Note: n = 7 to 0
Output
Input (Pull-up
MOS on)
Input (Pull-up
MOS off)
Read
PBDR value
PBDR value
Pin state
Pin state
Write
The value is written to PBDR, but does
not affect the pin state.
The write value is output from the pin.
The value is written to PBDR, but does
not affect the pin state.
The value is written to PBDR, but does
not affect the pin state.
Rev. 1.00 Sep. 19, 2007 Page 889 of 1136
REJ09B0359-0100