as7c251mntf18a Alliance Memory, Inc, as7c251mntf18a Datasheet - Page 9
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as7c251mntf18a
Manufacturer Part Number
as7c251mntf18a
Description
2.5v Flowthrough Synchronous Sram With
Manufacturer
Alliance Memory, Inc
Datasheet
1.AS7C251MNTF18A.pdf
(18 pages)
Timing characteristics over operating range
1
Snooze Mode Electrical Characteristics
Cycle time
Clock access time
Output enable low to data valid
Clock high to output low Z
Data Output invalid from clock high
Output enable low to output low Z
Output enable high to output high Z
Clock high to output high Z
Output enable high to invalid output
Clock high pulse width
Clock low pulse width
Address and Control setup to clock high
Data setup to clock high
Write setup to clock high
Chip select setup to clock high
Address hold from clock high
Data hold from clock high
Write hold from clock high
Chip select hold from clock high
Clock enable setup to clock high
Clock enable hold from clock high
ADV setup to clock high
ADV hold from clock high
Current during Snooze Mode
ZZ active to input ignored
ZZ inactive to input sampled
ZZ active to SNOOZE current
ZZ inactive to exit SNOOZE current
See “Notes:” on page 15.
12/23/04, v 1.1
Description
Parameter
Conditions
ZZ > V
Alliance Semiconductor
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CYC
CD
OE
LZC
OH
LZOE
HZOE
HZC
OHOE
CH
CL
AS
DS
WS
CSS
AH
DH
WH
CSH
CENS
CENH
ADVS
ADVH
Sym
IH
Min
8.5
2.5
3.0
2.5
2.5
2.0
2.0
2.0
2.0
0.5
0.5
0.5
0.5
2.0
0.5
2.0
0.5
–
–
0
–
–
0
-75
®
Max
7.5
3.5
3.5
3.5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Symbol
t
t
I
t
t
RZZI
PDS
PUS
SB2
ZZI
Min
2.5
3.0
3.0
3.0
2.0
2.0
2.0
2.0
0.5
0.5
0.5
0.5
2.0
0.5
2.0
0.5
10
–
–
0
–
–
0
-85
Max
8.5
4.0
4.0
4.0
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Min
2
2
0
Min
2.5
3.0
4.0
4.0
2.0
2.0
2.0
2.0
0.5
0.5
0.5
0.5
2.0
0.5
2.0
0.5
12
–
–
0
–
–
0
AS7C251MNTF18A
-10
Max
4.0
4.0
4.0
10
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Max
50
2
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
P. 9 of 18
Units
cycle
cycle
cycle
cycle
Notes
mA
2,3,4
2,3,4
2,3,4
2,3,4
6, 7
6, 8
6, 7
6, 8
2
5
5
6
6
6
6
6
6
6
6
1