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H838532H датащи(PDF) 182 Page - Renesas Technology Corp

номер детали H838532H
подробное описание детали  16-Bit Single-Chip Microcomputer H8 Family / H8/300H Super Low Power Series
PDF  508 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H838532H датащи(HTML) 182 Page - Renesas Technology Corp

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Section 8 I/O Ports
Rev. 1.00 May 30, 2008 Page 162 of 484
REJ09B0436-0100
(1) Port Data Register 1 (PDR1)
Bit
Initial value
Read/Write
7
P1
0
R/W
6
P1
0
R/W
5
P1
0
R/W
4
P1
0
R/W
3
P1
0
R/W
0
P1
0
R/W
2
P1
0
R/W
1
P1
0
R/W
76
5
4
3
2
1
0
PDR1 is an 8-bit register that stores data for port 1 pins P1
7 to P10. If port 1 is read while PCR1
bits are set to 1, the values stored in PDR1 are read, regardless of the actual pin states. If port 1 is
read while PCR1 bits are cleared to 0, the pin states are read.
Upon reset, PDR1 is initialized to H'00.
(2) Port Control Register 1 (PCR1)
Bit
Initial value
Read/Write
7
PCR1
0
W
6
PCR1
0
W
5
PCR1
0
W
4
PCR1
0
W
3
PCR1
0
W
0
PCR1
0
W
2
PCR1
0
W
1
PCR1
0
W
76
5
4
32
1
0
PCR1 is an 8-bit register for controlling whether each of the port 1 pins P1
7 to P10 functions as an
input pin or output pin. Setting a PCR1 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 PCR1 and in PDR1 are valid only
when the corresponding pin is designated in PMR1 as a general I/O pin.
Upon reset, PCR1 is initialized to H'00.
PCR1 is a write-only register, which is always read as all 1s.
(3) Port Pull-Up Control Register 1 (PUCR1)
Bit
Initial value
Read/Write
7
PUCR1
0
R/W
6
PUCR1
0
R/W
5
PUCR1
0
R/W
4
PUCR1
0
R/W
3
PUCR1
0
R/W
0
PUCR1
0
R/W
2
PUCR1
0
R/W
1
PUCR1
0
R/W
7
6
5
4
32
10



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