512Mb: 32 Meg x 16, 16 Meg x 32 Mobile SDRAM
Timing Diagrams
Figure 39:
Auto Refresh Mode
T0
CLK
tCK
T1
T2
tCH
((
))
((
))
((
))
Tn + 1
tCL
((
))
((
))
((
))
To + 1
CKE
tCKS
tCMS
COMMAND
tCKH
tCMH
NOP
AUTO
REFRESH
PRECHARGE
((
))
NOP
( (
NOP
))
((
))
((
))
((
))
((
))
AUTO
REFRESH
((
))
NOP
( (
NOP
))
((
))
((
))
((
))
((
))
((
))
((
))
ACTIVE
DQM
A0–A9,
A11, A12
ALL BANKS
ROW
A10
SINGLE BANK
((
))
((
))
ROW
tAS
tAH
BA0, BA1
BANK(S)
((
))
((
))
((
))
tRP
tRFC
tRFC
((
))
((
))
((
))
BANK
DQ
High-Z
Precharge all
active banks
DON’T CARE
UNDEFINED
Notes:
1. Each AUTO REFRESH command performs a REFRESH cycle. Back-to-back commands are not
required. See Table 11 on page 47.
PDF: 09005aef81ca5de4/Source: 09005aef81ca5e03
MT48H32M16LF_1.fm - Rev. H 6/07 EN
56
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©2005 Micron Technology, Inc. All rights reserved.
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