K4X56163PG Datasheet, PDF (23/23 Pages) Samsung semiconductor – 16M x16 Mobile-DDR SDRAM

K4X56163PG - L(F)E/G
Mobile-DDR SDRAM
Functional truth table
Current State
CKE
n-1
CKE
n
CS
RAS CAS
WE
Add
Action
SELF-
L
H
H
X
X
X
X Exit Self-Refresh
REFRESHING^*8 _L
H
L
H
H
H
X Exit Self-Refresh
L
H
L
H
H
L
X ILLEGAL
L
H
L
H
L
X
X ILLEGAL
L
H
L
L
X
X
X ILLEGAL
L
L
X
X
X
X
X NOPeration(Maintain Self-Refresh)
POWER
DOWN
L
H
X
X
X
X
X Exit Power Down(Idle after tPDEX)
L
L
X
X
X
X
X NOPeration(Maintain Power Down)
DEEP POWER L
H
H
X
X
X
X _{Exit Deep Power Down}^*10
DOWN
L
L
X
X
X
X
X NOPeration(Maintain Deep Power Down)
ALL BANKS
H
H
X
X
X
X
X Refer to Function True Table
IDLE*9
H
L
L
L
L
H
X Enter Self-Refresh
H
L
H
X
X
X
X Enter Power Down
H
L
L
H
H
H
X Enter Power Down
H
L
L
H
H
L
X Enter Deep Power Down
H
L
L
H
H
L
X ILLEGAL
H
L
L
H
L
X
X ILLEGAL
H
L
L
L
X
X
X ILLEGAL
L
X
X
X
X
X
X Refer to Current State=Power Down
ANY STATE
H
H
X
X
X
X
X Refer to Function Truth Table
other than
listed above
ABBREVIATIONS :
H=High Level, L=Low level, X=Don′t Care
Note :
1. All entries assume that CKE was High during the preceding clock cycle and the current clock cycle.
2. ILLEGAL to bank in specified state ; function may be legal in the bank indicated by BA, depending on the state of that bank.(ILLEGAL = Device oper-
ation and/or data integrity are not guaranteed.)
3. Must satisfy bus contention, bus turn around and write recovery requirements.
4. NOP to bank precharging or in idle sate. May precharge bank indicated by BA.
5. ILLEGAL if any bank is not idle.
6. Refer to "Read with Auto Precharge Timing Diagram" for detailed information.
7. Refer to "Write with Auto Precharge Timing Diagram" for detailed information.
8. CKE Low to High transition will re-enable CK, CK and other inputs asynchronously. A minimum setup time must be satisfied before issuing any com-
mand other than EXIT.
9. Power-Down, Self-Refresh and Deep Power Down Mode can be entered only from All Bank Idle state.
10. The Deep Power Down Mode is exited by asserting CKE high and full initialization is required after exiting Deep Power Down Mode.
January 2006