32C408B
4 Megabit (512K x 8-Bit) SRAM
1
TABLE 5. 32408B FUNCTIONAL DESCRIPTION
CS
WE
OE
MODE
I/O PIN
SUPPLY CURRENT
H
L
L
L
X
H
H
L
X
H
L
Not Select
Output Disable
Read
High-Z
High-Z
DOUT
ISB, ISB1
ICC
ICC
X
Write
D
ICC
IN
1. X = don’t care.
TABLE 6. 32C408B AC CHARACTERISTICS FOR WRITE CYCLE
(V =5V +/- 10%, T = -55 TO +1‘25C, UNLESS OTERWISE SPECIFIED
CC
A
PARAMETER
SYMBOL
SUBGROUPS
MIN
TYP
MAX
UNIT
Write Cycle Time
tWC
tCW
tAS
9, 10, 11
ns
ns
ns
ns
ns
ns
ns
-20
-25
-30
20
25
30
--
--
--
--
--
--
Chip Select to End of Write
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
-20
-25
-30
14
15
17
--
--
--
--
--
--
Address Setup Time
-20
-25
-30
0
0
0
--
--
--
--
--
--
Address Valid to End of Write
tAW
-20
-25
-30
14
15
17
--
--
--
--
--
--
Write Pulse Width (OE High)
tWP
-20
-25
-30
14
15
17
--
--
--
--
--
--
Write Recovery Time
tWR
-20
-25
-30
0
0
0
--
--
--
--
--
--
Write to Output in High-Z
tWHZ
-20
-25
-30
--
--
--
5
5
6
--
--
--
05.02.02 Rev 7
All data sheets are subject to change without notice
4
©2002 Maxwell Technologies
All rights reserved.
MAXWELL [ MAXWELL TECHNOLOGIES ]
