as7c33256pfs18a-166tqi Alliance Memory, Inc, as7c33256pfs18a-166tqi Datasheet - Page 6

• Manufacturer Part Number: as7c33256pfs18a-166tqi
• Description: 3.3v 256k 16/18 Pipeline Burst Synchronous Sram
• Manufacturer: Alliance Memory, Inc

*“Notes” column refers to “notes” on page 10.
Key to switching waveforms
Clock access time (flow-through
mode)
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 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
ADV setup to clock HIGH
ADSP setup to clock HIGH
ADSC setup to clock HIGH
ADV hold from clock HIGH
ADSP hold fromclock HIGH
ADSC hold from clock HIGH
3/14/01; V.1.0
Parameter
Rising input
Symbol
t
t
t
t
t
t
t
t
t
ADSPH
ADSCH
t
OHOE
ADSPS
ADSCS
t
HZOE
t
t
ADVH
t
t
LZOE
t
t
t
ADVS
t
t
t
HZC
t
t
CDF
t
WH
CSH
LZC
OH
CH
WS
CSS
AH
DH
OE
CL
AS
DS
Alliance Semiconductor
Min
1.5
2.4
2.4
1.5
1.5
1.5
1.5
0.5
0.5
0.5
0.5
1.5
1.5
1.5
0.5
0.5
0.5
–
–
0
0
–
–
0
–166
Falling input
Max
3.5
3.5
3.5
9
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Min
1.5
2.5
2.5
1.5
1.5
1.5
1.5
0.5
0.5
0.5
0.5
1.5
1.5
1.5
0.5
0.5
0.5
®
0
0
0
–
–
–
–
–150
Max
3.8
3.8
3.8
10
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Min
1.5
2.5
2.5
1.5
1.5
1.5
1.5
0.5
0.5
0.5
0.5
1.5
1.5
1.5
0.5
0.5
0.5
–
–
0
0
–
–
0
–133
Max
4.0
4.0
4.0
10
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Undefined/don’t care
Min
1.5
3.5
3.5
2.0
2.0
2.0
2.0
0.5
0.5
0.5
0.5
2.0
2.0
2.0
0.5
0.5
0.5
–
0
0
0
–
–
–
–100
AS7C33256PFS16A
AS7C33256PFS18A
Max
5.0
4.5
5.0
12
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
P. 6 of 11
Notes*
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
6
6