EDS2516APTA-75TI-E Ver la hoja de datos (PDF) - Elpida Memory, Inc
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EDS2516APTA-75TI-E Datasheet PDF : 52 Pages
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EDS2516APTA-TI-E
Command Truth Table for CKE
CKE
Current State
n – 1 n /CS /RAS /CAS /WE Address Operation
Notes
Self refresh
H× × × × × ×
L H H× × × ×
L H L HH× ×
INVALID, CLK (n – 1) would exit self refresh
Self refresh recovery
Self refresh recovery
L H L HL × ×
ILLEGAL
LHLL×××
LL ×××××
Self refresh recovery H H H × × × ×
ILLEGAL
Continue self refresh
Idle after tRC
HH L HH× ×
Idle after tRC
HH L HL × ×
HH L L × × ×
HL H× × × ×
HL L HH× ×
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Power down
HL L HL × ×
HL L L × × ×
H× × × × ×
ILLEGAL
ILLEGAL
INVALID, CLK (n – 1) would exit power down
L H H× × × ×
EXIT power down
All banks idle
L H L HHH×
LL ×××××
HH H× × ×
EXIT power down
Continue power down mode
Refer to operations in Function Truth Table
HH L H× ×
Refer to operations in Function Truth Table
HH 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
HL H× × ×
Begin power down next cycle
HL L H× ×
Refer to operations in Function Truth Table
HL L L H×
HL L L L H×
Refer to operations in Function Truth Table
Self refresh
1
H L L L L L OPCODE Refer to operations in Function Truth Table
LH×××××
Exit power down next cycle
LL ×××××
Power down
1
Row active
H× × × × × ×
L× ×××××
Any state other than H H × × × ×
Refer to operations in Function Truth Table
Clock suspend
1
Refer to operations in Function Truth Table
listed above
HL × × × × ×
Begin clock suspend next cycle
2
LH×××××
Exit clock suspend next cycle
LL ×××××
Maintain clock suspend
Remark: H: VIH. L: VIL. ×: VIH or VIL
Notes: 1. Self refresh can be entered only from the all banks idle state. Power down can be entered only from all
banks idle. Clock suspend can be entered only from following states, row active, read, read with auto-
precharge, write and write with auto precharge.
2. Must be legal command as defined in Function Truth Table.
Data Sheet E0677E10 (Ver. 1.0)
21
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