PUMA2S4000A-20 Advanced Packaging Technology Of America, PUMA2S4000A-20 Datasheet - Page 4

• Manufacturer Part Number: PUMA2S4000A-20
• Description: SRAM, The PUMA S4000 is a 4 Mbit SRAM module, user configurable as 128K x 32, 256K x 16 or 512K x 8
• Manufacturer: Advanced Packaging Technology Of America

PUMA 2/67/77S4000/A/B - 20/25/35
Parameter
Read Cycle Time
Address Access Time
Chip Select Access Time
Output Enable to Output Valid
Output Hold from Address Change
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
Parameter
Write Cycle Time
Chip Selection to End of Write
Address Valid to End of Write
Address Setup Time
Write Pulse Width
Write Recovery Time
Data to Write Time Overlap
Output Active from End of Write
Data Hold from Write Time
Write to Output High Z
AC OPERATING CONDITIONS
Read Cycle
Write Cycle
* Note : Only applies to PUMA 67S4000/A otherwise t
(3)
Symbol
t
t
t
t
t
t
t
t
t
t
WHZ
WC
CW
AW
WP
WR
DW
OW
Symbol
AS
DH
(3)
t
t
t
t
t
t
t
t
t
ACS
OHZ
RC
AA
OE
OH
CLZ
OLZ
CHZ
min
20
15
15
15
15
2*
0
0
0
5
min
20
20
5
6
0
0
0
-
-
-
max
15
4
-
-
-
-
-
-
-
-
-
20
max
20
20
9
9
9
-
-
-
-
min
25
16
16
15
10
2*
0
5
3
0
min
25
5
5
0
-
-
-
-
-
25
DH
max
25
10
-
-
-
-
-
-
-
-
-
(min) = 0
max
25
25
15
15
8
-
-
-
-
min
35
20
20
20
15
2*
min
0
5
3
0
35
5
5
0
-
-
-
-
-
35
35
max
10
max Units
-
-
-
-
-
-
-
-
-
35
35
12
15
15
-
-
-
-
Unit
Issue 4.5 August 2002
ns
ns
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ns
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