HD6473837H Datasheet, PDF (160/562 Pages) Renesas Technology Corp – Hardware Manual

Bit 0: P2₀/IRQ₄/ADTRG Pin Function Switch (IRQ4): This bit selects whether pin
P2₀/IRQ₄/ADTRG is used as P2₀ or as IRQ₄/ADTRG.
Bit 0: IRQ4
Description
0
1
Note:
Functions as P2₀ I/O pin
(initial value)
Functions as IRQ₄/ADTRG input pin
See 12.3.2, Start of A/D Conversion by External Trigger Input, for the ADTRG pin setting.
Port Mode Register 4 (PMR4)
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
NMOD₇ NMOD₆ NMOD₅ NMOD₄ NMOD₃ NMOD₂ NMOD₁ NMOD₀
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PMR4 is an 8-bit read/write register, used to select CMOS output or NMOS open drain output for
each port 2 pin.
Upon reset, PMR4 is initialized to H'00.
Bit n—NMOS Open-Drain Output Select (NMODn): This bit selects NMOS open-drain output
when pin P2_n is used as an output pin.
Bit n: NMODn
0
1
Description
CMOS output
NMOS open-drain outputNMOS open-drain output
(n = 7 to 0)
143