EDS1232AATA-75MI 데이터 시트보기 (PDF) - Elpida Memory, Inc
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EDS1232AATA-75MI Datasheet PDF : 53 Pages
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EDS1232AATA-MI
Command Truth Table for CKE
CKE
Current State
n – 1 n /CS /RAS /CAS /WE Address Operation
Notes
Self refresh
H× × × × × ×
INVALID, CLK (n – 1) would exit self refresh
L H H× × × ×
Self refresh recovery
LHL
LHL
LHL
LL ×
Self refresh recovery H H H
E HHL
HH L
HH L
HL H
OH L L
HL L
HL L
L Power down
H× ×
H
H
L
×
×
H
H
L
×
H
H
L
×
H
L
×
×
×
H
L
×
×
H
L
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
Self refresh recovery
ILLEGAL
ILLEGAL
Continue self refresh
Idle after tRC
Idle after tRC
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
INVALID, CLK (n – 1) would exit power down
L H H× × × ×
EXIT power down
L H L HHH×
EXIT power down
LL ×××××
Continue power down mode
All banks idle
HH H× × ×
Refer to operations in Function Truth Table
HH L H× ×
Refer to operations in Function Truth Table
P H H L L H ×
Refer to operations in Function Truth Table
HH L L L H×
CBR (auto) Refresh
H H L L L L OPCODE Refer to operations in Function Truth Table
r H L H × × ×
Begin power down next cycle
HL L H× ×
Refer to operations in Function Truth Table
o H L L L H ×
Refer to operations in Function Truth Table
HL L L L H×
Self refresh
1
H L L L L L OPCODE Refer to operations in Function Truth Table
LH×××××
Exit power down next cycle
d L L × × × × ×
Power down
1
Row active
H× × × × × ×
Refer to operations in Function Truth Table
L× ×××××
Clock suspend
1
u Any state other than H H × × × ×
Refer to operations in Function Truth Table
listed above
HL × × × × ×
Begin clock suspend next cycle
2
LH×××××
Exit clock suspend next cycle
c L L × × × × ×
Maintain clock suspend
Remark: H = VIH, L = VIL, × = VIH or VIL
t Notes: 1. Self refresh can be entered only from the all banks idle state. Power down can be entered only from all
banks idle or row active state.
2. Must be legal command as defined in Function Truth Table.
Data Sheet E0340E30 (Ver. 3.0)
20
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