A43E06161 AMIC Technology, Corp., A43E06161 Datasheet - Page 44

• Manufacturer Part Number: A43E06161
• Description: 512K x 16-Bit x 2 Banks Synchronous DRAM
• Manufacturer: AMIC Technology, Corp.

Function Truth Table for CKE (Table 2)
Abbreviations : ABI = All Banks Idle
Note: 6. After CKE’s low to high transition to exit self refresh mode. And a time of t
PRELIMINARY
Other than
Precharge
Any State
Current
Refresh
Power
Banks
Above
Listed
Down
Bank
State
Both
Self
Idle
7. CKE low to high transition is asynchronous as if restarts internal clock.
8. Power-down and self refresh can be entered only from the all banks idle state.
9. Must be a legal command.
All
high transition to issue a new command.
A minimum setup time “tSS + one clock” must be satisfied before any command other than exit.
CKE
(July, 2005, Version 0.1)
n-1
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
CKE
H
H
H
H
H
H
H
H
H
H
H
H
H
n
X
X
L
L
L
L
L
L
L
L
L
L
L
L
CS
X
H
X
X
H
X
X
H
X
X
X
X
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
RAS CAS
H
H
H
H
H
H
H
H
H
X
X
L
X
X
X
L
X
X
X
X
X
X
X
X
L
L
L
X
X
H
H
X
X
X
X
H
H
X
X
X
X
H
H
H
X
X
X
X
X
L
L
L
L
L
WE
X
H
X
X
H
X
H
X
X
H
X
L
X
X
X
L
X
X
X
X
L
L
X
X
X
X
X
43
Address
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
INVALID
Exit Self Refresh → ABI after t
Exit Self Refresh → ABI after t
ILLEGAL
ILLEGAL
ILLEGAL
NOP(Maintain Self Refresh)
INVALID
Exit Power Down → ABI
Exit Power Down → ABI
ILLEGAL
ILLEGAL
ILLEGAL
NOP(Maintain Power Down Mode)
Refer to Table 1
Enter Power Down
Enter Power Down
ILLEGAL
ILLEGAL
ILLEGAL
Enter Self Refresh
ILLEGAL
NOP
Refer to Operations in Table 1
Begin Clock Suspend next cycle
Exit Clock Suspend next cycle
Maintain clock Suspend
RC
(min) has to be elapse after CKE’s low to
Action
AMIC Technology, Corp.
RC
RC
A43E06161
Note
6
6
7
7
8
8
8
9
9