PEDL87V21071-01
OKI Semiconductor
ML87V21071
Termination of
unused pin
No.
Symbol
I/O
Pad Remarks
Pin Description
77
78
N.C.
VSS
—
—
Unused pin
Ground
Not used
X
Schmitt
pull-down 50k
Schmitt
Mode setting pin bit 3
(Equivalent to internal register R656I)
Not used or
connected to GND
79
MODE3
I
Mode setting pin bit 4
(Equivalent to internal register DOSEL)
Not used or
connected to GND
80
81
82
MODE4
N.C.
I
pull-down 50k
—
—
Unused pin
Not used
Schmitt
Not used or
connected to GND
OE
Output enable input pin
pull-down 50k
83
84
85
86
N.C.
N.C.
N.C.
N.C.
—
—
—
—
Unused pin
Unused pin
Unused pin
Unused pin
Not used
Not used
Not used
Not used
Schmitt
Not used or
connected to GND
87
88
89
TEST5
VDD
I
—
I
Test input pin bit 5 (1: test mode)
3.3 V power supply
pull-down 50k
X
Schmitt
pull-down 50k
Schmitt
pull-down 50k
Schmitt
pull-down 50k
Schmitt
pull-down 50k
Schmitt
Not used or
connected to GND
TEST4
Test input pin bit 4 (1: test mode)
Not used or
connected to GND
90
91
92
93
TEST3
TEST2
TEST1
TEST0
I
I
I
I
Test input pin bit 3 (1: test mode)
Test input pin bit 2 (1: test mode)
Test input pin bit 1 (1: test mode)
Test input pin bit 0 (1: test mode)
Not used or
connected to GND
Not used or
connected to GND
Not used or
connected to GND
pull-down 50k
94
95
N.C.
N.C.
—
—
Unused pin
Unused pin
Not used
Not used
Schmitt
pull-down 50k
Schmitt
Not used or
connected to GND
96
97
TESTM
SELF
I
I
Memory test input pin (1: test mode)
Self refresh test input setting pin
Not used or
connected to GND
pull-down 50k
98
99
VSS
N.C.
VDD
—
—
—
Ground
X
Not used
X
Unused pin
100
3.3 V power supply
6/123
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