HD6433937 Datasheet, PDF (158/521 Pages) Hitachi Semiconductor – Hardware Manual

4. Port mode register 4 (PMR4)
Bit
7
6
—
—
Initial value
0
0
Read/Write
—
—
5
4
3
2
1
0
— NMOD4 NMOD3 NMOD2 NMOD1 NMOD0
0
0
0
0
0
0
—
R/W
R/W
R/W
R/W
R/W
PMR4 is an 8-bit read/write register that controls whether individual port 2 pins are set as CMOS
or NMOS open-drain when 1 is set in PCR.
A 0 setting should be used for this function.
Upon reset, PMR4 is initialized to H'00.
Bit n: NMOS open-drain output select (NMODn)
These bits select NMOS open-drain when pin P2_n is used as an output pin. These bits should be
cleared to 0.
Bit n
NMODn
0
1
Description
CMOS setting
NMOS open-drain setting
(initial value)
(n = 4 to 0)
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