Rainbow Electronics W24256 User Manual
Page 4
Preliminary W24256
- 4 -
AC Characteristics, continued
(V
DD
= 5V
±
10%; V
SS
= 0V; T
A
= 0
°
C to 70
°
C)
Read Cycle
PARAMETER SYM.
W24256-70L/LL UNIT
MIN.
MAX.
Read Cycle Time
T
RC
70
-
nS
Address Access Time
T
AA
- 70 nS
Chip Select Access Time
T
ACS
- 70 nS
Output Enable to Output Valid
T
AOE
-
30 nS
Chip Selection to Output in Low Z
T
CLZ
* 5
-
nS
Output Enable to Output in Low Z
T
OLZ
* 5
-
nS
Chip Deselection to Output in High Z
T
CHZ
* -
20 nS
Output Disable to Output in High Z
T
OHZ
* -
20 nS
Output Hold from Address Change
T
OH
3
- nS
∗
These parameters are sampled but not 100% tested
Write Cycle
PARAMETER SYM.
W24256-70L/LL UNIT
MIN.
MAX.
Write Cycle Time
T
WC
70
-
nS
Chip Selection to End of Write
T
CW
70
-
nS
Address Valid to End of Write
T
AW
70
-
nS
Address Setup Time
T
AS
0
- nS
Write Pulse Width
T
WP
50
-
nS
Write Recovery Time
CS, WE
T
WR
0
- nS
Data Valid to End of Write
T
DW
30
-
nS
Data Hold from End of Write
T
DH
0
- nS
Write to Output in High Z
T
WHZ
* -
25 nS
Output Disable to Output in High Z
T
OHZ
* -
30 nS
Output Active from End of Write
T
OW
5
- nS
∗
These parameters are sampled but not 100% tested