HD6432633 Datasheet, PDF (512/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

Port 3 Data Direction Register (P3DDR)
Bit
:
Initial value :
R/W
:
7
6
5
4
3
2
1
0
P37DDR P36DDR P35DDR P34DDR P33DDR P32DDR P31DDR P30DDR
0
0
0
0
0
0
0
0
W
W
W
W
W
W
W
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 is initialized, so the pin
state is determined by the specification of P3DDR and P3DR.
Port 3 Data Register (P3DR)
Bit
:
Initial value :
R/W
:
7
P37DR
0
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.
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