1Gb: x4, x8, x16 DDR3 SDRAM
Power-Down Mode
Figure 98: Precharge Power-Down (Fast-Exit Mode) Entry and Exit
T0
T1
T2
T3
T4
T5
Ta0
Ta1
CK#
CK
tCK
tCH
tCL
Command
NOP
NOP
NOP
NOP
NOP
Valid
tCPDED
tCKE (MIN)
tIH
tIS
CKE
tIS
tPD
tXP
Enter power-down
mode
Exit power-down
mode
Indicates break
in time scale
Don’t Care
Figure 99: Precharge Power-Down (Slow-Exit Mode) Entry and Exit
T0
T1
T2
T3
T4
Ta
Ta1
Tb
CK#
CK
tCK
tCH
tCL
1
2
NOP
Command
PRE
NOP
NOP
NOP
Valid
Valid
tCPDED
tCKE (MIN)
tXP
tIH
tIS
CKE
tIS
tXPDLL
tPD
Enter power-down
mode
Exit power-down
mode
Indicates break
in time scale
Don’t Care
1. Any valid command not requiring a locked DLL.
2. Any valid command requiring a locked DLL.
Notes:
PDF: 09005aef826aa906
1Gb_DDR3_SDRAM.pdf - Rev. L 03/13 EN
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