64Mb : x4, x8, x16
SDRAM
WRITE – FULL-PAGE BURST
T0
T1
T2
T3
T4
T5
Tn + 1
Tn + 2
Tn + 3
( (
) )
t
t
CK
CL
CLK
( (
) )
t
CH
t
t
CKS CKH
( (
) )
CKE
( (
) )
t
t
CMS
CMH
( (
) )
COMMAND
ACTIVE
NOP
WRITE
t
NOP
NOP
NOP
NOP
BURST TERM
NOP
( (
) )
t
CMH
CMS
( (
) )
DQM /
DQML, DQMH
( (
) )
t
t
AH
AS
( (
) )
1
A0-A9, A11
ROW
COLUMN m
( (
) )
t
t
t
AS
AH
AH
( (
) )
ROW
A10
( (
) )
t
AS
( (
) )
BA0, BA1
BANK
BANK
t
( (
) )
t
t
t
t
t
t
t
t
t
t
t
DS
DH
DS
DH
+ 1
DS
DH
DS
DH
DS
DH
DS
DH
( (
) )
DIN
m
DIN
m
DIN
m
+ 2
D
IN m + 3
DIN m - 1
DQ
( (
) )
t
RCD
Full-page burst does
not self-terminate. Can
use BURST TERMINATE
command to stop.2, 3
256 (x16) locations within same row
512 (x8) locations within same row
1,024 (x4) locations within same row
DON’T CARE
Full page completed
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
AH
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
ns
ns
ns
ns
ns
ns
ns
CKS
CMH
CMS
DH
1.5
1
1.5
0.8
1.5
0.8
1.5
15
1.5
0.8
1.5
0.8
1.5
20
2
1
ns
ns
ns
ns
ns
ns
t
t
t
t
t
t
t
t
t
t
t
AS
CH
3
1.5
1
2
CL
3
1
CK(3)
CK(2)
CKH
8
DS
1.5
18
2
–
7.5
0.8
10
1
RCD
20
1
0.8
*CAS latency indicated in parentheses.
NOTE: 1. x16: A8, A9 and A11 = “Don’t Care”
x8: A9 and A11 = “Don’t Care”
x4: A11 = “Don’t Care”
t
2. WR must be satisfied prior to PRECHARGE command.
t
3. Page left open; no RP.
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.
53
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