348
Port 3 Data Direction Register (P3DDR)
7
P37DDR
0
W
Bit
:
Initial value :
R/W
:
6
P36DDR
0
W
5
P35DDR
0
W
4
P34DDR
0
W
3
P33DDR
0
W
2
P32DDR
0
W
1
P31DDR
0
W
0
P30DDR
0
W
P3DDR is an 8-bit write-dedicated register, which specifies the I/O for each port 3 pin by bit.
Read is disenabled. If a read is carried out, undefined values are read out.
By setting P3DDR to 1, the corresponding port 3 pins become output, and be clearing to 0 they
become input.
P3DDR 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. SCI and IIC are initialized, so
the pin state is determined by the specification of P3DDR and P3DR.
Port 3 Data Register (P3DR)
7
P37DR
0
R/W
Bit
:
Initial value :
R/W
:
6
P36DR
0
R/W
5
P35DR
0
R/W
4
P34DR
0
R/W
3
P33DR
0
R/W
2
P32DR
0
R/W
1
P31DR
0
R/W
0
P30DR
0
R/W
P3DR is an 8-bit readable/writable register, which stores the output data of port 3 pins (P35 to
P30).
P3DR 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.
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 ...