IC42S16800 ICSI [Integrated Circuit Solution Inc], IC42S16800 Datasheet - Page 15

• Manufacturer Part Number: IC42S16800
• Description: 4(2)M x 8(16) Bits x 4 Banks (128-MBIT) SYNCHRONOUS DYNAMIC RAM
• Manufacturer: ICSI [Integrated Circuit Solution Inc]

IC42S81600/IC42S81600L
IC42S16800/IC42S16800L
CKE RELATED COMMAND TRUTH TABLE
Integrated Circuit Solution Inc.
DR023-0E 6/11/2004
Current State
Self-Refresh (S.R.)
Self-Refresh Recovery
Power-Down (P.D.)
Both Banks Idle
Any state
other than
listed above
Notes:
1. H : Hight level, L : low level, X : High or low level (Don’t care).
2. CKE Low to High transition will re-enable CLK and other inputs asynchronously. A minimum setup time must be satisfied
3. Power down and Self refresh can be entered only from the both banks idle state.
4. Must be legal command as defined in Operative Command Table.
5. Illegal if t
before any command other than EXIT.
SREX
is not satisfied.
Operation
INVALID, CLK (n - 1)would exit S.R.
Self-Refresh Recovery
Self-Refresh Recovery
Illegal
Illegal
Maintain S.R.
Idle After t
Idle After t
Illegal
Illegal
Begin clock suspend next cycle
Begin clock suspend next cycle
Illegal
Illegal
Exit clock suspend next cycle
Maintain clock suspend
INVALID, CLK (n - 1) would exit P.D.
EXIT P.D.
Maintain power down mode
Refer to operations in Operative Command Table
Refer to operations in Operative Command Table
Refer to operations in Operative Command Table
Auto-Refresh
Refer to operations in Operative Command Table
Refer to operations in Operative Command Table
Refer to operations in Operative Command Table
Refer to operations in Operative Command Table
Self-Refresh
Refer to operations in Operative Command Table
Power-Down
Refer to operations in Operative Command Table
Begin clock suspend next cycle
Exit clock suspend next cycle
Maintain clock suspend
RC
RC
(3)
Idle
(3)
(2)
(2)
(2)
(2)
(5)
(5)
(4)
(1)
n-1
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
CKE
X
H
H
H
H
H
H
H
H
H
X
H
H
H
H
H
H
X
H
H
n
L
L
L
L
L
L
L
L
L
L
L
L
L
L
CS
CS
CS
CS
CS
H
H
H
H
H
X
L
L
L
X
L
L
L
L
L
L
X
X
X
X
X
L
L
L
L
L
L
L
L
X
X
X
X
X
RAS
RAS
RAS
RAS
RAS
X
X
H
H
X
X
H
H
X
H
H
X
X
X
X
X
X
H
X
H
X
X
X
X
X
L
L
L
L
L
L
L
L
L
CAS
CAS
CAS
CAS
CAS
X
X
H
X
X
X
H
X
X
H
X
X
X
X
X
X
X
X
H
X
X
H
X
X
X
X
X
L
L
L
L
L
L
L
WE
WE
WE
WE
WE
H
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
X
X
X
L
X
X
X
X
X
Address
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
—
X
X
—
—
—
X
Op - Code
—
—
—
X
Op - Code
X
X
X
X
X
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