EDS1232AASE View Datasheet(PDF) - Elpida Memory, Inc
Part Name
Description
Manufacturer
EDS1232AASE Datasheet PDF : 53 Pages
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EDS1232AASE
Command Truth Table for CKE
CKE
Current State
n – 1 n /CS /RAS /CAS /WE Address Operation
Notes
Self refresh
H× × × × × ×
L H H× × × ×
INVALID, CLK (n – 1) would exit self refresh
Self refresh recovery
L H L HH× ×
Self refresh recovery
L H L HL × ×
ILLEGAL
LHLL×××
ILLEGAL
LL ×××××
Continue self refresh
Self refresh recovery H H H × × × ×
Idle after tRC
HH L HH× ×
Idle after tRC
Power down
HH L HL × ×
HH L L × × ×
HL H× × × ×
HL L HH× ×
HL L HL × ×
HL L L × × ×
H× × × × ×
L H H× × × ×
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
INVALID, CLK (n – 1) would exit power down
EXIT power down
L H L HHH×
LL ×××××
EXIT power down
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
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× ×
HL L L H×
HL L L L H×
Refer to operations in Function Truth Table
Refer to operations in Function Truth Table
Self refresh
1
H L L L L L OPCODE Refer to operations in Function Truth Table
Row active
LH×××××
LL ×××××
H× × × × × ×
Exit power down next cycle
Power down
1
Refer to operations in Function Truth Table
L× ×××××
Clock suspend
1
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
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 or row active state.
2. Must be legal command as defined in Function Truth Table.
Data Sheet E0350E20 (Ver. 2.0)
20
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