HD404054 Datasheet, PDF (33/101 Pages) Hitachi Semiconductor – HMCS400-series microcomputers designed to increase program productivity with large-capacity memory

HD404054 Series/HD404094 Series
Table 20-1 Programmable I/O Circuits (with pull-up MOS)
MIS3 (Bit 3 of MIS)
0
1
DCD, DCR
0
1
0
1
PDR
0
1
0
1
0
1
0
1
CMOS buffer PMOS
—
—
—
On
—
—
—
On
NMOS
—
—
On
—
—
—
On
—
Pull-up MOS
—
—
—
—
—
On
—
On
Note: — indicates off status.
Table 20-2 Programmable I/O Circuits (with pull-down MOS)
MIS3 (Bit 3 of MIS)
0
1
DCD, DCR
0
1
0
PDR
0
1
0
1
0
1
CMOS buffer PMOS
—
—
—
On
—
—
NMOS
—
—
On
—
—
—
Pull-down MOS
—
—
—
—
On
—
Note: — indicates off status.
1
0
1
—
On
On
—
On
—
D₄–D₉, R port (HD404054 Series)
D₈, D₉, R port (HD404094 Series)
V_CC
V_CC
Pull-up
MOS
Pull-up control signal
HLT
MIS3
Buffer control signal
DCD, DCR
Output data
PDR
Input control signal
Input data
Figure 19-1 I/O Buffer Configuration (with pull-up MOS)
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