ESMT
M13S64164A
Operation Temperature Condition -40°C~85°C
CKE CKE
Current State
Add
Action
CS RAS CAS
WE
n-1
H
L
n
X
H
H
H
H
H
L
X
H
L
X
X
H
H
H
L
X
X
H
H
L
X
X
H
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
INVALID
Exit Self-Refresh
Exit Self-Refresh
ILLEGAL
L
SELF-REFRESHING*
1
L
L
L
L
X
X
X
X
X
X
X
H
X
H
L
ILLEGAL
L
L
X
X
X
X
X
X
L
ILLEGAL
L
X
X
X
X
X
L
X
X
X
X
X
L
NOP (Maintain Self-Refresh)
INVALID
H
L
X
H
L
POWER DOWN
Exit Power Down (Idle after tPDEX
NOP (Maintain Power Down)
Refer to Function True Table
Enter Self-Refresh
Exit Power Down
Exit Power Down
ILLEGAL
)
L
H
H
H
H
H
H
H
L
H
L
L
H
L
X
H
H
H
L
X
H
H
L
L
ALL BANKS IDLE*2
L
L
L
L
X
X
X
X
ILLEGAL
L
L
X
X
X
ILLEGAL
L
L
X
X
Refer to Current State = Power Down
Refer to Function True Table
H
H
X
ANY STATE other
than listed above
ABBREVIATIONS :
H = High Level, L = Low level, V = Valid, X = Don’t Care
Note :
1. CKE Low to High transition will re-enable CLK, CLK and other inputs asynchronously. A minimum setup time must be
satisfied before issuing any command other than EXIT.
2. Power-Down and Self-Refresh can be entered only from All Bank Idle state.
Elite Semiconductor Memory Technology Inc.
Publication Date : Mar. 2009
Revision : 1.0 31/49
ESMT [ ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC. ]
