k4x51163pc Samsung Semiconductor, Inc., k4x51163pc Datasheet - Page 23

• Manufacturer Part Number: k4x51163pc
• Description: 32m X16 Mobile-ddr Sdram
• Manufacturer: Samsung Semiconductor, Inc.

Functional truth table
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.
K4X51163PC - L(F)E/G
REFRESHING
DEEP POWER
Current State
ALL BANKS
ANY STATE
listed above
other than
POWER
DOWN
DOWN
IDLE*9
SELF-
*8
CKE
n-1
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
CKE
H
H
H
H
H
H
H
H
H
n
L
L
L
L
L
L
L
L
L
L
X
CS
H
X
X
X
H
X
X
H
X
X
L
L
L
L
L
L
L
L
L
L
RAS
X
H
H
H
X
X
X
X
X
X
X
H
H
H
H
X
X
L
L
L
CAS
H
H
H
H
H
X
L
X
X
X
X
X
X
X
L
X
L
X
X
X
WE
X
H
X
X
X
X
X
X
X
X
H
X
H
X
X
X
X
L
L
L
Add
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Exit Self-Refresh
Exit Self-Refresh
ILLEGAL
ILLEGAL
ILLEGAL
NOPeration(Maintain Self-Refresh)
Exit Power Down(Idle after tPDEX)
NOPeration(Maintain Power Down)
Exit Deep Power Down
NOPeration(Maintain Deep Power Down)
Refer to Function True Table
Enter Self-Refresh
Enter Power Down
Enter Power Down
Enter Deep Power Down
ILLEGAL
ILLEGAL
ILLEGAL
Refer to Current State=Power Down
Refer to Function Truth Table
Mobile-DDR SDRAM
*10
Action
February 2006