AS7C33512PFS16A
AS7C33512PFS18A
®
Synchronous truth table
CE0
H
L
L
L
L
L
L
L
L
X
X
X
X
H
H
H
H
L
X
H
X
H
CE1
X
L
L
X
X
H
H
H
H
X
X
X
X
X
X
X
X
H
X
X
X
X
CE2
X
X
X
H
H
L
L
L
L
X
X
X
X
X
X
X
X
L
X
X
X
X
ADSP
X
L
H
L
H
L
L
H
H
H
H
H
H
X
X
X
X
H
H
X
H
X
ADSC
L
X
L
X
L
X
X
L
L
H
H
H
H
H
H
H
H
L
H
H
H
H
ADV
X
X
X
X
X
X
X
X
X
L
L
H
H
L
L
H
H
X
L
L
H
H
WEn
1
X
X
X
X
X
X
X
F
F
F
F
F
F
F
F
F
F
T
T
T
T
T
OE
X
X
X
X
X
L
H
L
H
L
H
L
H
L
H
L
H
X
X
X
X
X
Address
accessed
NA
NA
NA
NA
NA
External
External
External
External
Next
Next
Current
Current
Next
Next
Current
Current
External
Next
Next
Current
Current
CLK
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
L to H
Operation
Deselect
Deselect
Deselect
Deselect
Deselect
Begin read
Begin read
Begin read
Begin read
Cont. read
Cont. read
Suspend read
Suspend read
Cont. read
Cont. read
Suspend read
Suspend read
Begin write
Cont. write
Cont. write
Suspend write
Suspend write
DQ
Hi
−
Z
Hi
−
Z
Hi
−
Z
Hi
−
Z
Hi
−
Z
Hi
−
Z
2
Hi
−
Z
Hi
−
Z
2
Hi
−
Z
Q
Hi
−
Z
Q
Hi
−
Z
Q
Hi
−
Z
Q
Hi
−
Z
D
3
D
D
D
D
Key: X = Don’t Care, L = Low, H = High.
1
See “Write enable truth table” on page 4 for more information.
2
Q in flow through mode
3For WRITE operation following a READ,
OE
must be HIGH before the input data set up time and held HIGH throughout the input hold time.
Recommended operating conditions
Parameter
Supply voltage
3.3V I/O supply
voltage
2.5V I/O supply
voltage
Address and
control pins
I/O pins
Ambient operating temperature
Symbol
V
DD
V
SS
V
DDQ
V
SSQ
V
DDQ
V
SSQ
V
IH
V
IL
V
IH
V
IL
T
A
Min
3.135
0.0
3.135
0.0
2.35
0.0
2.0
–0.5
2
2.0
–0.5
2
0
Nominal
3.3
0.0
3.3
0.0
2.5
0.0
–
–
–
–
–
Max
3.465
0.0
3.465
0.0
2.9
0.0
V
DD
+ 0.3
0.8
V
DDQ
+ 0.3
0.8
70
Unit
V
V
V
V
V
°
C
Input voltages
1
1 Input voltage ranges apply to 3.3V I/O operation. For 2.5V I/O operation, contact factory for input specifications.
2 V
IL
min = –2.0V for pulse width less than 0.2 × t
RC
.
4/15/02; v.1.5
Alliance Semiconductor
6 of 14
ISSI [ INTEGRATED SILICON SOLUTION, INC ]
