64Mb : x4, x8, x16
SDRAM
1
CLOCK SUSPEND MODE
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
t
t
CL
CK
CLK
CKE
t
CH
t
t
CKS CKH
t
t
CKS CKH
t
t
CMS
CMH
COMMAND
READ
NOP
NOP
NOP
NOP
NOP
WRITE
NOP
t
t
CMS
CMH
DQM /
DQML, DQMH
t
t
AH
AS
2
2
A0-A9, A11
COLUMN m
COLUMN e
t
t
AS
AS
AH
A10
t
t
AH
BA0, BA1
BANK
BANK
t
AC
t
t
t
t
t
DH
AC
OH
HZ
DS
DOUT
m
DOUT m + 1
DIN
e
DIN e + 1
DQ
t
LZ
DON’T CARE
UNDEFINED
TIMING PARAMETERS
-6
-7 E
-7 5
-8 E
-6
-7 E
-7 5
-8 E
SYMBOL* MIN MAX MIN MAX MIN MAX MIN MAX UNITS
SYMBOL* MIN MAX MIN MAX MIN MAX MIN MAX UNITS
t
t
AC(3)
AC(2)
AH
5.5
–
5.4
5.4
5.4
6
6
6
ns
ns
ns
ns
ns
ns
ns
ns
ns
CKS
CMH
CMS
DH
1.5
1
1.5
0.8
1.5
0.8
1.5
1.5
0.8
1.5
0.8
1.5
2
1
2
1
2
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
1
1.5
2.5
2.5
6
0.8
1.5
2.5
2.5
7
0.8
1.5
2.5
2.5
7.5
10
1
2
1.5
1
AS
CH
3
DS
1.5
CL
3
HZ(3)
HZ(2)
LZ
5.5
–
5.4
5.4
5.4
6
6
7
CK(3)
CK(2)
CKH
8
–
7.5
0.8
10
1
1
2
1
3
1
3
1
3
1
0.8
OH
*CAS latency indicated in parentheses.
NOTE: 1. For this example, the burst length = 2, the CAS latency = 3, and auto precharge is disabled.
2. x16: A8, A9 and A11 = “Don’t Care”
x8: A9 and A11 = “Don’t Care”
x4: A11 = “Don’t Care”
64Mb: x4, x8, x16 SDRAM
64MSDRAM_F.p65 – Rev. F; Pub. 1/03
Micron Technology, Inc., reservesthe right to change productsor specificationswithout notice.
©2003, Micron Technology, Inc.
38
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