HD6473837H Datasheet, PDF (177/562 Pages) Renesas Technology Corp – Hardware Manual

8.7.2 Register Configuration and Description
Table 8.17 shows the port 6 register configuration.
Table 8.17 Port 6 Registers
Name
Abbrev.
R/W
Port data register 6
PDR6
R/W
Port control register 6
PCR6
W
Port pull-up control register 6
PUCR6
R/W
Initial Value
H'00
H'00
H'00
Address
H'FFD9
H'FFE9
H'FFE3
Port Data Register 6 (PDR6)
Bit
Initial value
Read/Write
7
P6₇
0
R/W
6
P6₆
0
R/W
5
P6₅
0
R/W
4
P6₄
0
R/W
3
P6₃
0
R/W
2
P6₂
0
R/W
1
P6₁
0
R/W
0
P6₀
0
R/W
PDR6 is an 8-bit register that stores data for port 6 pins P6₇ to P6₀. If port 6 is read while PCR6
bits are set to 1, the values stored in PDR6 are read, regardless of the actual pin states. If port 6 is
read while PCR6 bits are cleared to 0, the pin states are read.
Upon reset, PDR6 is initialized to H'00.
Port Control Register 6 (PCR6)
Bit
Initial value
Read/Write
7
PCR6₇
0
W
6
PCR6₆
0
W
5
PCR6₅
0
W
4
PCR6₄
0
W
3
PCR6₃
0
W
2
PCR6₂
0
W
1
PCR6₁
0
W
0
PCR6₀
0
W
PCR6 is an 8-bit register for controlling whether each of the port 6 pins P6₇ to P6₀ functions as an
input pin or output pin. Setting a PCR6 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 PCR6 and in PDR6 are valid only
when the corresponding pin is designated in bits SGS3 to SGS0 in LPCR as a general I/O pin.
Upon reset, PCR6 is initialized to H'00.
PCR6 is a write-only register. All bits are read as 1.
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