256Mb: x4, x8, x16 SDRAM
READ Operation
Figure 29: READ Continuous Page Burst
T0
T1
T2
T3
T4
T5
T6
Tn + 1
Tn + 2
Tn + 3
Tn + 4
( (
) )
( (
) )
t
t
CK
CL
CLK
t
CH
t
t
CKS CKH
( (
) )
CKE
( (
) )
t
t
CMS
CMH
( (
) )
( (
) )
Command
ACTIVE
NOP
READ
t
NOP
NOP
NOP
NOP
NOP
BURST TERM
NOP
NOP
t
CMS
CMH
( (
) )
DQM
( (
) )
t
t
AH
AS
( (
) )
( (
) )
Address
Row
Column m
t
t
AH
AS
( (
) )
( (
) )
Row
A10
t
t
AH
AS
( (
) )
( (
) )
BA0, BA1
Bank
Bank
t
AC
t
t
t
t
t
AC
AC
AC
AC
AC
( (
) )
t
t
t
t
t
t
OH
OH
OH
OH
OH
OH
( (
) )
( (
) )
D
D
D
D
D
OUT
D
OUT
OUT
OUT
OUT
DQ
OUT
t
LZ
t
HZ
t
All locations within same row
Full page completed
RCD
CAS latency
Don’t Care
Undefined
Full-page burst does not self-terminate.
Can use BURST TERMINATE command.
1. For this example, CL = 2.
Note:
PDF: 09005aef8091e6d1
256Mb_sdr.pdf - Rev. R 10/12 EN
Micron Technology, Inc. reserves the right to change products or specifications without notice.
57
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