
GS81302D08/09/18/36E-375/350/333/300/250
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.04 4/2011
20/34
2011, GSI Technology
AC Electrical Characteristics
Parameter
Symbol
-375
-350
-333
-300
-250
Units
Notes
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Clock
K, K Clock Cycle Time
C, C Clock Cycle Time
tKHKH
tCHCH
2.66
8.4
2.86
8.4
3.0
8.4
3.3
8.4
4.0
8.4
ns
tKC Variable
tKCVar
—
0.2
—
0.2
—
0.2
—
0.2
—
0.2
ns
6
K, K Clock High Pulse Width
C, C Clock High Pulse Width
tKHKL
tCHCL
1.06
—
1.14
—
1.2
—
1.32
—
1.6
—
ns
K, K Clock Low Pulse Width
C, C Clock Low Pulse Width
tKLKH
tCLCH
1.06
—
1.14
—
1.2
—
1.32
—
1.6
—
ns
K to K High
C to C High
tKHKH
tCHCH
1.13
—
1.23
—
1.35
—
1.49
—
1.8
—
ns
K to K High
C to C High
tKHKH
tCHCH
1.13
—
1.23
—
1.35
—
1.49
—
1.8
—
ns
K, K Clock High to C, C Clock High
tKHCH
0
1.21
0
1.29
0
1.35
0
1.49
0
1.8
ns
DLL Lock Time
tKCLock
2048
—
2048
—
2048
—
2048
—
2048
—
cycle
7
K Static to DLL reset
tKCReset
30
—
30
—
30
—
30
—
30
—
ns
Output Times
K, K Clock High to Data Output Valid
C, C Clock High to Data Output Valid
tKHQV
tCHQV
—
0.45
—
0.45
—
0.45
—
0.45
—
0.45
ns
4
K, K Clock High to Data Output Hold
C, C Clock High to Data Output Hold
tKHQX
tCHQX
–0.45
—
–0.45
—
–0.45
—
–0.45
—
–0.45
—
ns
4
K, K Clock High to Echo Clock Valid
C, C Clock High to Echo Clock Valid
tKHCQV
tCHCQV
—
0.45
—
0.45
—
0.45
—
0.45
—
0.45
ns
K, K Clock High to Echo Clock Hold
C, C Clock High to Echo Clock Hold
tKHCQX
tCHCQX
–0.45
—
–0.45
—
–0.45
—
–0.45
—
–0.45
—
ns
CQ, CQ High Output Valid
tCQHQV
—
0.2
—
0.23
—
0.25
—
0.27
—
0.30
ns
8
CQ, CQ High Output Hold
tCQHQX
–0.2
—
–0.23
—
–0.25
—
–0.27
—
–0.30
—
ns
8
CQ Phase Distortion
tCQHCQH
0.9
—
1.0
—
1.10
—
1.24
—
1.55
—
ns
K Clock High to Data Output High-Z
C Clock High to Data Output High-Z
tKHQZ
tCHQZ
—
0.45
—
0.45
—
0.45
—
0.45
—
0.45
ns
4
K Clock High to Data Output Low-Z
C Clock High to Data Output Low-Z
tKHQX1
tCHQX1
–0.45
—
–0.45
—
–0.45
—
–0.45
—
–0.45
—
ns
4
Setup Times
Address Input Setup Time
tAVKH
0.4
—
0.4
—
0.4
—
0.4
—
0.5
—
ns
1
Control Input Setup Time (R, W)
tIVKH
0.4
—
0.4
—
0.4
—
0.4
—
0.5
—
ns
2
Control Input Setup Time (BWX), (BWX)
tIVKH
0.28
—
0.28
—
0.28
—
0.3
—
0.35
—
ns
3
Data Input Setup Time
tDVKH
0.28
—
0.28
—
0.28
—
0.3
—
0.35
—
ns