W24257 Datasheet, PDF (4/10 Pages) Winbond – 32K X 8 CMOS STATIC RAM

W24257
AC Characteristics, continued
(VDD = 5V ±10%, VSS = 0V, TA = 0 to 70° C for LL/L; -20 to 85° C for LE)
Read Cycle
PARAMETER
SYMBOL
Read Cycle Time
Address Access Time
Chip Select Access Time
Output Enable to Output Valid
Chip Selection to Output in Low Z
Output Enable to Output in Low Z
Chip Deselection to Output in High Z
Output Disable to Output in High Z
Output Hold from Address Change
∗ These parameters are sampled but not 100% tested
TRC
TAA
TACS
TAOE
TCLZ*
TOLZ*
TCHZ*
TOHZ*
TOH
Write Cycle
PARAMETER
SYMBOL
Write Cycle Time
Chip Selection to End of Write
Address Valid to End of Write
Address Setup Time
Write Pulse Width
Write Recovery Time
#CS, #WE
Data Valid to End of Write
Data Hold from End of Write
Write to Output in High Z
Output Disable to Output in High Z
Output Active from End of Write
∗ These parameters are sampled but not 100% tested
TWC
TCW
TAW
TAS
TWP
TWR
TDW
TDH
TWHZ*
TOHZ*
TOW
W24257-70
MIN.
MAX.
70
-
-
70
-
70
-
35
10
-
5
-
-
30
-
30
10
-
W24257-70
MIN.
MAX.
70
-
60
-
60
-
0
-
45
-
0
-
30
-
0
-
-
30
-
30
0
-
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
nS
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
-4-