AS4LC256K16EO
®
EDO page mode cycle
Std
Symbol
t
PC
t
CAP
t
CP
t
PCM
t
CRW
t
RASP
-35
Parameter
Read
or
write cycle time (fast page)
Access time from CAS precharge
CAS precharge time (fast page)
EDO page mode RMW cycle
Page mode CAS pulse width (RMW)
RAS pulse width
Min
15
–
4
56
44
35
Max
–
19
–
–
–
75K
Min
17
–
5
58
46
45
-45
Max
–
21
–
–
–
75K
Min
25
–
6
60
50
60
-60
Max Unit
–
23
–
–
–
75K
ns
ns
ns
ns
ns
ns
Notes
14
13
Refresh cycle
Std
Symbol
t
CSR
t
CHR
t
RPC
t
CPT
-35
Parameter
CAS setup time (CAS-before-RAS)
CAS hold time (CAS-before-RAS)
RAS precharge to CAS hold time
CAS precharge time
(CAS-before-RAS counter test)
Min
10
8
0
8
Max
–
–
–
–
Min
10
8
0
8
-45
Max
–
–
–
–
Min
10
10
0
8
-60
Max Unit
–
–
–
–
ns
ns
ns
ns
Notes
3
3
Output enable
Std
Symbol
t
ROH
t
OEA
t
OED
t
OEZ
t
OEH
-35
Parameter
RAS hold time referenced to OE
OE access time
OE to data delay
Output buffer turnoff delay from OE
OE command hold time
Min
5
–
5
–
8
Max
–
10
–
8
–
Min
5
–
5
–
8
-45
Max
–
10
–
8
–
Min
5
–
8
–
8
-60
Max Unit
–
10
–
8
–
ns
ns
ns
ns
ns
8
Notes
Self refresh cycle
-35
Std Symbol Parameter
t
RASS
t
RPS
t
CHS
RAS pulse width
(CBR self refresh)
RAS precharge time
(CBR self refresh)
CAS hold time
(CBR self refresh)
Min
100K
85
30
Max
–
–
–
Min
100K
85
30
-45
Max
–
–
–
Min
100K
85
30
-60
Max
–
–
–
Unit
ns
ns
ns
Notes
4/11/01; V.1.1
Alliance Semiconductor
P. 7 of 25
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
