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H838024 Datasheet(PDF) 247 Page - Renesas Technology Corp

Part # H838024
Description  Renesas 8-Bit Single-Chip Microcomputer Super Low Power Series
PDF  697 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H838024 Datasheet(HTML) 247 Page - Renesas Technology Corp

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Section 8 I/O Ports
Rev. 7.00 Mar 10, 2005 page 205 of 652
REJ09B0042-0700
Port Mode Register 3 (PMR3)
Bit
Initial value
Read/Write
7
AEVL
0
R/W
6
AEVH
0
R/W
5
W
4
W
3
W
0
UD
0
R/W
2
TMOFH
0
R/W
1
TMOFL
0
R/W
PMR3 is an 8-bit read/write register, controlling the selection of pin functions for port 3 pins.
Bit 7—P37/AEVL Pin Function Switch (AEVL)
This bit selects whether pin P37/AEVL is used as P37 or as AEVL.
Bit 7
AEVL
Description
0
Functions as P37 I/O pin
(initial value)
1
Functions as AEVL input pin
Bit 6—P36/AEVH Pin Function Switch (AEVH)
This bit selects whether pin P36/AEVH is used as P36 or as AEVH.
Bit 6
AEVH
Description
0
Functions as P36 I/O pin
(initial value)
1
Functions as AEVH input pin
Bits 5 to 3—Reserved
These bits are reserved; they can only be written with 0.
Bit 2—P32/TMOFH Pin Function Switch (TMOFH)
This bit selects whether pin P32/TMOFH is used as P32 or as TMOFH.
Bit 2
TMOFH
Description
0
Functions as P32 I/O pin
(initial value)
1
Functions as TMOFH output pin



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