HD6473887 Datasheet, PDF (164/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

4. Port mode register 3 (PMR3)
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
AEVL AEVH WDCKS NCS IRQ0 RESO UD PWM
0
0
0
0
0
1
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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: 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)
Bit 5: Watchdog timer source clock select (WDCKS)
This bit selects the watchdog timer source clock.
Bit 5
WDCKS
0
1
Description
ø/8192 selected
øw/32 selected
(initial value)
147