357
Port 7 Data Register (P7DR)
7
P77DR
0
R/W
Bit
:
Initial value :
R/W
:
6
P76DR
0
R/W
5
P75DR
0
R/W
4
P74DR
0
R/W
3
P73DR
0
R/W
2
P72DR
0
R/W
1
P71DR
0
R/W
0
P70DR
0
R/W
P7DR is an 8-bit readable/writable register, which stores the output data of port 7 pins (P77 to
P70).
P7DR is initialized to H'00 by a power-on reset and in hardware standby mode. The previous state
is maintained by a manual reset and in software standby mode.
Port 7 Register (PORT7)
7
P77
—
*
R
Bit
:
Initial value :
R/W
:
6
P76
—
*
R
5
P75
—
*
R
4
P74
—
*
R
3
P73
—
*
R
2
P72
—
*
R
1
P71
—
*
R
0
P70
—
*
R
Note:
*
Determined by the state of pins P77 to P70.
PORT7 is an 8-bit read-dedicated register, which reflects the state of pins. Write is disenabled.
Always carry out writing off output data of port 7 pins (P77 to P70) to P7DR without fail.
When P7DDR is set to 1, if port 7 is read, the values of P7DR are read. When P7DDR is cleared to
0, if port 7 is read, the states of pins are read out.
P7DDR and P7DR are initialized by a power-on reset and in hardware standby mode, so PORT7 is
determined by the state of the pins. The previous state is maintained by a manual reset and in
software standby mode.
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...