GS8644V72C-250I GSI [GSI Technology], GS8644V72C-250I Datasheet - Page 21

• Manufacturer Part Number: GS8644V72C-250I
• Description: 4M x 18, 2M x 36, 1M x 72 72Mb S/DCD Sync Burst SRAMs
• Manufacturer: GSI [GSI Technology]

AC Electrical Characteristics
Notes:
1.
2.
Rev: 1.03 11/2004
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Through
Pipeline
Flow
These parameters are sampled and are not 100% tested.
ZZ is an asynchronous signal. However, in order to be recognized on any given clock cycle, ZZ must meet the specified setup and hold
times as specified above.
Clock to Output in Low-Z
Clock to Output in Low-Z
Clock to Output Invalid
Clock to Output Invalid
Clock to Output Valid
Clock to Output Valid
Clock to Output Valid
G to output in High-Z
G to output in High-Z
G to output in Low-Z
Clock to Output in
Clock to Output in
Clock Cycle Time
Clock Cycle Time
Clock HIGH Time
G to Output Valid
G to Output Valid
Clock LOW Time
ZZ setup time
ZZ hold time
ZZ recovery
Parameter
Setup time
Setup time
(x18/x36)
Hold time
Hold time
(x18/x36)
(x18/x36)
(x18/x36)
High-Z
High-Z
(x72)
(x72)
(x72)
(x72)
Symbol
tOHZ
tOHZ
tOLZ
tZZS
tZZH
tKQX
tKQX
tZZR
tHZ
tHZ
tLZ
tLZ
tKQ
tKQ
tKQ
tOE
tOE
tKC
tKC
tKH
tKL
tH
tH
tS
tS
1
1
1
1
1
2
2
1
1
Min
4.0
1.0
1.0
1.3
0.2
6.5
3.0
3.0
1.5
0.5
1.3
1.5
1.0
1.0
—
—
—
—
—
—
—
20
0
5
1
-250
Max
2.3
2.6
6.5
2.3
2.6
2.3
2.6
2.3
2.6
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
21/40
Min
4.4
1.0
1.0
1.3
0.3
6.5
3.0
3.0
1.5
0.5
1.3
1.5
1.0
1.0
—
—
—
—
—
—
—
20
0
5
1
-225
GS8644V18(B/E)/GS8644V36(B/E)/GS8644V72(C)
Max
2.5
2.7
6.5
2.5
2.7
2.5
2.7
2.5
2.7
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Min
5.0
1.0
1.0
1.4
0.4
6.5
3.0
3.0
1.5
0.5
1.3
1.5
1.0
1.0
—
—
—
—
—
—
—
20
0
5
1
-200
Max
2.7
2.8
6.5
2.7
2.8
2.7
2.8
2.7
2.8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Min
6.0
1.0
1.0
1.5
0.5
7.0
3.0
3.0
1.5
0.5
1.3
1.5
1.0
1.0
—
—
—
—
—
—
—
20
0
5
1
-166
Max Min
2.9
2.9
7.0
2.9
2.9
2.9
2.9
2.9
2.9
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
6.7
1.0
1.0
1.5
0.5
7.5
3.0
3.0
1.5
0.5
1.5
1.7
1.0
1.0
—
—
—
—
—
—
—
20
0
5
1
-150
Product Preview
Max
3.3
3.3
7.5
3.0
3.0
3.3
3.3
3.0
3.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
© 2003, GSI Technology
Min Max
7.5
1.0
1.0
1.5
0.5
8.5
3.0
3.0
1.5
0.5
1.7
1.0
1.0
—
—
—
—
—
—
—
20
2
0
5
1
-133
3.5
3.5
8.5
3.0
3.0
3.5
3.5
3.0
3.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns