512Mb: x4, x8, x16 SDRAM
Timing Diagrams
Figure 35: Clock Suspend Mode
T0
CLK
T1
T2
T3
tCK
tCL
tCH
tCKS tCKH
CKE
tCKS tCKH
tCMS tCMH
COMMAND
READ
NOP
NOP
T4
T5
T6
T7
T8
NOP
NOP
NOP
WRITE
DQM/
DQML, DQMU
A0–A9,
A11, A12
A10
BA0, BA1
tAS tAH
COLUMN m 2
tAS tAH
tAS tAH
BANK
tCMS tCMH
COLUMN e2
BANK
tAC
tAC
tOH
tHZ
tDS tDH
DQ
DOUT m
DOUT m + 1
Din e
tLZ
Notes: 1. For this example, BL = 2, CL = 3, and auto precharge is disabled.
2. x16: A11 and A12 = “Don’t Care”; x8: A12 = “Don’t Care.”
T9
NOP
Din + 1
Don’t Care
Undefined
PDF: 09005aef809bf8f3/Source: 09005aef80818a4a
512MbSDRAM.fm - Rev. L 10/07 EN
51
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