Hitachi AP1 - Page 247

--------------------------------------------------------------HMCS404C
Without pull-up MOS (NMOS open drain)
With
pull-up MOS (B)
Applied pins
or
CMOS (A or C)
SCK
SCK
,.,
HlT
I/O
Vcc
HlT
V'~
common
H l T +mode select
o-~ HL T+"od'_~
SCK
pins
0-
~ ; ... ",' SCK
internal SCK
'"
~:'
c
Vcc
.0.
~::'
"E Output
co
SO
"0
pins
c
co
ci)
Input
INTo.
pins
INTI.
o----e- input
o---e- input
SI
data
data
HlT
HlT
(Note) In the stop mode, Hl T signal is "0", Hl T signal is "'" and I/O pins are in high impedance state.
Table 18 Data Input from Input/Output Common Pins
I/O pin circuit type
Possibi I ity
Available pin condition
of Input
for input
CMOS
No
-
Standard
Without pull-up
pins
MOS
Yes
"1"
(NMOS open drain)
With pull-up
MOS Yes
"1"
Without pull-down
High
MOS
Yes
"0"
voltage
(PMOS open drain)
pins
With
pull-down
MOS
Yes "0"
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