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H838532H датащи(PDF) 191 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) 191 Page - Renesas Technology Corp

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Section 8 I/O Ports
Rev. 1.00 May 30, 2008 Page 171 of 484
REJ09B0436-0100
(3) Port Pull-Up Control Register 3 (PUCR3)
Bit
Initial value
Read/Write
7
PUCR3
0
R/W
6
PUCR3
0
R/W
5
PUCR3
0
R/W
4
PUCR3
0
R/W
3
PUCR3
0
R/W
0
PUCR3
0
R/W
2
PUCR3
0
R/W
1
PUCR3
0
R/W
2
10
5
43
76
PUCR3 controls whether the MOS pull-up of each of the port 3 pins P3
7 to P30 is on or off. When
a PCR3 bit is cleared to 0, setting the corresponding PUCR3 bit to 1 turns on the MOS pull-up for
the corresponding pin, while clearing the bit to 0 turns off the MOS pull-up.
Upon reset, PUCR3 is initialized to H'00.
(4) Port Mode Register 3 (PMR3)
Bit
Initial value
Read/Write
7
AEVL
0
R/W
6
AEVH
0
R/W
5
WDCKS
0
R/W
4
NCS
0
R/W
3
IRQ0
0
R/W
0
PWM
0
R/W
2
—
1
—
1
UD
0
R/W
PMR3 is an 8-bit read/write register, controlling the selection of pin functions for port 3 pins.
Upon reset, PMR3 is initialized to H'04.
Bit 7: P3
7/AEVL pin function switch (AEVL)
This bit selects whether pin P3
7/AEVL is used as P37 or as AEVL.
Bit 7
AEVL
Description
0
Functions as P3
7 I/O pin
(initial value)
1
Functions as AEVL input pin



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