SDRAM
AS4SD8M16
Austin Semiconductor, Inc.
READ - DQM OPERATION1
TIMING PARAMETERS
-75
-75
SYMBOL*
MIN
MAX
5.4
6
UNITS
SYMBOL*
MIN
MAX
UNITS
t
ns
t
ns
AC(3)
AC(2)
CKS
1.5
t
ns
ns
ns
ns
ns
ns
ns
ns
t
ns
ns
ns
ns
ns
ns
ns
CMH
0.8
1.5
t
0.8
1.5
2.5
2.5
7.5
10
t
CMS
AH
t
t
t
5.4
6
AS
CH
HZ(3)
HZ(2)
t
t
t
1
3
CL
LZ
t
t
t
OH
CK(3)
CK(2)
t
20
RCD
t
0.8
CKH
*CAS latency indicated in parentheses.
NOTES:
1. For this example, the burst length = 4, the CAS latency = 2.
2. A9, A11= “Don’t Care”
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AS4SD8M16
Rev. 0.5 04/05
42