128Mb: x4, x8, x16
SDRAM
1
CLOCK SUSPEND MODE
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
t
t
CK
CL
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
AH
AS
A10
t
t
AH
AS
BA0, BA1
BANK
BANK
t
AC
t
t
t
t
t
DH
AC
OH
HZ
DS
D
OUT
m
D
OUT m + 1
D
OUT
e
DOUT e + 1
DQ
t
LZ
DON’T CARE
UNDEFINED
TIMING PARAMETERS
-7E
-75
-8E
MAX UNITS
-7E
-75
-8E
SYMBOL* MIN
MAX
5.4
MIN
MAX
5.4
6
MIN
SYMBOL* MIN
MAX
MIN
1.5
0.8
1.5
0.8
1.5
MAX
MIN
MAX UNITS
t
t
AC (3)
6
6
ns
ns
ns
ns
ns
ns
ns
ns
ns
CKS
CMH
CMS
DH
1.5
0.8
1.5
0.8
1.5
2
1
2
1
2
ns
ns
ns
ns
ns
t
t
t
t
t
t
t
t
t
AC (2)
5.4
t
AH
0.8
1.5
2.5
2.5
7
0.8
1.5
2.5
2.5
7.5
10
1
2
t
t
t
t
t
t
AS
CH
3
DS
CL
3
HZ(3)
HZ(2)
LZ
5.4
5.4
5.4
6
6
6
ns
ns
ns
ns
CK (3)
CK (2)
CKH
8
7.5
0.8
10
1
1
3
1
3
1
3
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: A9 and A11 = “Don’t Care”
x8: A11 = “Don’t Care”
128Mb: x4, x8, x16 SDRAM
128MSDRAM_E.p65 – Rev. E; Pub. 1/02
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2001, Micron Technology, Inc.
39
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