mt47h128m16hg-3-it Micron Semiconductor Products, mt47h128m16hg-3-it Datasheet - Page 70

• Manufacturer Part Number: mt47h128m16hg-3-it
• Description: 2gb X4, X8, X16 Ddr2 Sdram
• Manufacturer: Micron Semiconductor Products

Figure 54:
Figure 55:
PDF: 09005aef824f87b6/Source: 09005aef824f1182
2gb_ddr2.fm - Rev. A 9/06 EN
PRECHARGE Command to Power-Down Entry
LOAD MODE Command to Power-Down Entry
Notes:
Notes:
COMMAND
1. The earliest precharge power-down entry may occur is at T2, which is 1 x
COMMAND
1. The earliest precharge power-down entry is at T3, which is after
2. All banks must be in the precharged state and
3. Valid address for LM command includes MR, EMR, EMR(2), and EMR(3) registers.
ADDRESS
ADDRESS
CHARGE command. Precharge power-down entry occurs prior to
CK#
CKE
CK#
A10
CKE
CK
CK
VALID
VALID
T0
T0
t RP 2
PRECHARGE
SINGLE BANK
ALL BANKS
VALID
VALID 3
T1
LM
T1
vs
70
1 x
t
CK
Power-down
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t MRD
entry
NOP
T2
NOP
T2
t
1
RP met prior to issuing LM command.
2Gb: x4, x8, x16 DDR2 SDRAM
t CKE (MIN)
Power-down 1
T3
entry
NOP
T3
DON’T CARE
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Power-Down Mode
t
t
MRD is satisfied.
RP (MIN) being satisfied.
t CKE (MIN)
t
CK after the PRE-
T4
DON’T CARE