UM61512A
Truth Table
Mode
CE2
I/O Operation
Supply Current
CE1
H
OE
X
WE
X
Standby
X
L
High Z
High Z
High Z
DOUT
DIN
ISB, ISB1
ISB, ISB2
ICC1
X
X
X
Output Disable
Read
L
H
H
H
H
L
H
L
H
ICC1
Write
L
X
L
ICC1
Note: X = H or L
Capacitance (TA = 25°C, f = 1.0 MHz)
Symbol
CIN *
Parameter
Min.
Max.
Unit
pF
Conditions
VIN = 0V
Input Capacitance
8
CI/O *
Input/Output Capacitance
10
pF
VI/O = 0V
* These parameters are sampled and not 100% tested.
AC Characteristics(TA = 0°C to +70°C, VCC = 5V ± 10%)
UM61512A-15 UM61512A-20 UM61512A-25
Symbol
Parameter
Unit
Min.
Max.
Min.
Max.
Min.
Max.
Read Cycle
tRC
Read Cycle Time
15
-
-
20
-
-
25
-
-
ns
ns
ns
tAA
Address Access Time
15
15
20
20
25
25
tACE1
Chip Enable Access Time
-
-
-
CE1
CE2
tACE2
tOE
-
-
15
7
-
-
20
9
-
-
25
12
-
ns
ns
ns
Output Enable to Output Valid
Chip Enable to Output in Low Z
tCLZ1
5
-
5
-
5
CE1
CE2
tCLZ2
tOLZ
5
2
-
-
-
5
2
-
*
-
5
2
-
-
-
ns
ns
ns
Output Enable to Output in Low Z
Chip Disable to Output in High Z
tCHZ1
10
10
15
CE1
CE2
tCHZ2
tOHZ
tOH
-
10
9
-
10
9
-
15
10
-
ns
ns
ns
Output Disable to Output in High Z
Output Hold from Address Change
2
3
2
5
2
5
-
-
4
UMC [ UMC CORPORATION ]
