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HD6433636SW Folha de dados(PDF) 145 Page - Renesas Technology Corp

Nome de Peças HD6433636SW
Descrição Electrónicos  8-Bit Microcomputer
PDF  418 Pages
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Fabricante Electrônico  RENESAS [Renesas Technology Corp]
Página de início  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6433636SW Folha de dados(HTML) 145 Page - Renesas Technology Corp

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Port Data Register 2 (PDR2)
Bit
76543210
P2
7
P2
6
P2
5
P2
4
P2
3
P2
2
P2
1
P2
0
Initial value
00000000
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PDR2 is an 8-bit register that stores data for pins P2
7 to P20 of port 2. If port 2 is read while PCR2
bits are set to 1, the values stored in PDR2 are directly 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
76543210
PCR2
7
PCR2
6
PCR2
5
PCR2
4
PCR2
3
PCR2
2
PCR2
1
PCR2
0
Initial value
00000000
Read/Write
WWWWWWWW
PCR2 is an 8-bit register for controlling whether each of the port 2 pins P2
7 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, which always reads all 1s.
Note:
As P2
7 is an input-only pin, it becomes a high-impedance output when PCR27 is set to 1.



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