EDD5108AFTA_06 ELPIDA [Elpida Memory], EDD5108AFTA_06 Datasheet - Page 21

• Manufacturer Part Number: EDD5108AFTA_06
• Description: 512M bits DDR SDRAM
• Manufacturer: ELPIDA [Elpida Memory]

Command Truth Table for CKE
Remark: H: VIH. L: VIL. ×: VIH or VIL
Note: 1. Self-refresh can be entered only from the all banks idle state. Power down can be entered only from all
Data Sheet E0699E50 (Ver. 5.0)
Current State
Self-refresh
Self-refresh recovery
Power down
All banks idle
Row active
banks idle or row active state.
CKE
n – 1 n
H
L
L
L
L
L
H
H
H
H
H
H
H
H
H
L
L
L
H
H
H
H
H
H
H
H
H
H
L
H
L
×
H
H
H
H
L
H
H
H
H
L
L
L
L
×
H
H
L
H
H
H
H
H
L
L
L
L
L
×
×
×
/CS
×
H
L
L
L
×
H
L
L
L
H
L
L
L
×
H
L
×
H
L
L
L
L
H
L
L
L
L
×
×
×
/RAS /CAS /WE Address
×
×
H
H
L
×
×
H
H
L
×
H
H
L
×
×
H
×
×
H
L
L
L
×
H
L
L
L
×
×
×
×
×
H
L
×
×
×
H
L
×
×
H
L
×
×
×
H
×
×
×
H
L
L
×
×
H
L
L
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
H
×
×
×
×
H
L
×
×
×
H
L
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
OPCODE Refer to operations in Function Truth Table
×
OPCODE Refer to operations in Function Truth Table
×
×
×
21
EDD5108AFTA, EDD5116AFTA
Operation
INVALID, CK (n-1) would exit self-refresh
Self-refresh recovery
Self-refresh recovery
ILLEGAL
ILLEGAL
Maintain self-refresh
Idle after tRC
Idle after tRC
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
INVALID, CK (n – 1) would exit power down
EXIT power down → Idle
Maintain power down mode
Refer to operations in Function Truth Table
Refer to operations in Function Truth Table
Refer to operations in Function Truth Table
CBR (auto) refresh
Refer to operations in Function Truth Table
Refer to operations in Function Truth Table
Refer to operations in Function Truth Table
Self-refresh
Power down
Refer to operations in Function Truth Table
Power down
1
1
1
Notes