HD6433832S Datasheet, PDF (156/560 Pages) Renesas Technology Corp – single-chip microcomputers

Port Data Register 2 (PDR2)
Bit
Initial value
Read/Write
7
P2₇
0
R/W
6
P2₆
0
R/W
5
P2₅
0
R/W
4
P2₄
0
R/W
3
P2₃
0
R/W
2
P2₂
0
R/W
1
P2₁
0
R/W
0
P2₀
0
R/W
PDR2 is an 8-bit register that stores data for pins P2₇ through P2₀. If port 2 is read while PCR2 bits
are set to 1, the values stored in PDR2 are read, regardless of the actual pin states. If port 2 is read
while PCR2 bits are cleared to 0, the pin states are read.
Upon reset, PDR2 is initialized to H'00.
Port Control Register 2 (PCR2)
Bit
Initial value
Read/Write
7
PCR2₇
0
W
6
PCR2₆
0
W
5
PCR2₅
0
W
4
PCR2₄
0
W
3
PCR2₃
0
W
2
PCR2₂
0
W
1
PCR2₁
0
W
0
PCR2₀
0
W
PCR2 is an 8-bit register for controlling whether each of the port 2 pins P2₇ to P2₀ functions as an
input pin or output pin. Setting a PCR2 bit to 1 makes the corresponding pin an output pin, while
clearing the bit to 0 makes the pin an input pin. The settings in PCR2 and in PDR2 are valid only
when the corresponding pin is designated in PMR2 as a general I/O pin.
Upon reset, PCR2 is initialized to H'00.
PCR2 is a write-only register. All bits are read as 1.
Port Mode Register 2 (PMR2)
Bit
7
—
Initial value
1
Read/Write
—
6
5
4
3
2
1
0
—
POF2 NCS IRQ0 POF1
UD
IRQ4
1
0
0
0
0
0
0
—
R/W
R/W
R/W
R/W
R/W
R/W
PMR2 is an 8-bit read/write register, controlling the selection of pin functions for pins P2₀,
P2₁,and P4₃, controlling the PMOS on/off option for pins P3₅/SO₂ and P3₂/SO₁, and controlling the
TMIG input noise canceller.
Upon reset, PMR2 is initialized to H'C0.
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