HD6433802H Datasheet, PDF (153/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

4. Port mode register 3 (PMR3)
Bit
7
6
5
4
3
2
1
0
AEVL AEVH —
—
— TMOFH TMOFL —
Initial value
0
0
—
—
—
0
0
—
Read/Write
R/W
R/W
W
W
W
R/W
R/W
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
0
1
Description
Functions as P3₇ I/O pin
Functions as AEVL input pin
(initial value)
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
0
1
Description
Functions as P3₆ I/O pin
Functions as AEVH input pin
(initial value)
Bits 5 to 3: Reserved bits
Bits 5 to 3 are reserved; only 0 can be written to these bits.
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
0
1
Description
Functions as P3₂ I/O pin
Functions as TMOFH output pin
(initial value)
135