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HD6433713 Datasheet(PDF) 142 Page - Renesas Technology Corp

Part # HD6433713
Description  single-chip microcontrollers
PDF  324 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6433713 Datasheet(HTML) 142 Page - Renesas Technology Corp

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2.
Port control register 9 (PCR9)
PCR9 is an 8-bit register for controlling whether each of port 9 pins P97 to P90 functions as an
input or output pin. Setting a PCR9 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 PCR9 and PDR9 are valid when
the affected pin is designated in PMR2 as a general-purpose I/O pin. PCR9 is a write-only
register, which always reads as all 1.
Upon reset, PCR9 is initialized to H'00.
3.
Port data register 9 (PDR9)
PDR9 is an 8-bit register that stores data for port 9 pins P97 to P90. If port 9 is read while PCR9
bits are set to 1, the values stored in PDR9 are read, regardless of the actual pin states. If port 9 is
read while PCR9 bits are cleared to 0, the pin states are read.
Upon reset, PDR9 is initialized to H'00.
Bit
Initial value
Read/Write
7
PCR9
0
W
6
PCR9
0
W
5
PCR9
0
W
4
PCR9
0
W
3
PCR9
0
W
0
PCR9
0
W
2
PCR9
0
W
1
PCR9
0
W
54
3
2
1
0
6
7
Bit
Initial value
Read/Write
7
PDR9
0
R/W
6
PDR9
0
R/W
5
PDR9
0
R/W
4
PDR9
0
R/W
3
PDR9
0
R/W
0
PDR9
0
R/W
2
PDR9
0
R/W
1
PDR9
0
R/W
32
10
4
5
6
7
131



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