IS42S16800B-6TL ISSI, Integrated Silicon Solution Inc, IS42S16800B-6TL Datasheet - Page 12

• Manufacturer Part Number: IS42S16800B-6TL
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: SDRAMr

Specifications of IS42S16800B-6TL

• Organization: 8Mx16
• Density: 128Mb
• Address Bus: 14b
• Access Time (max): 5.4ns
• Maximum Clock Rate: 167MHz
• Operating Supply Voltage (typ): 3.3V
• Package Type: TSOP-II
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Supply Current: 180mA
• Pin Count: 54
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

IS42S81600B, IS42S16800B
12
CKE RElATED COMMAND TRUTH TABlE
Current State
Self-Refresh (S.R.)
Self-Refresh Recovery Idle After t
Power-Down (P.D.)
Both Banks Idle
Any state
other than
listed above
Notes:
1. H : High 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
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
time must be satisfied before any command other than EXIT.
srx
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
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. --> Idle
Maintain power down mode
Refer to operations in Operative Command TableH
Refer to operations in Operative Command TableH
Refer to operations in Operative Command TableH
Auto-Refresh
Refer to operations in Operative Command TableH
Refer to operations in Operative Command TableH
Refer to operations in Operative Command TableH
Refer to operations in Operative Command TableH
Self-Refresh
Refer to operations in Operative Command TableH
Power-Down
Refer to operations in Operative Command TableH
Begin clock suspend next cycle
Exit clock suspend next cycle
Maintain clock suspend
rc
rc
(3)
(3)
(2)
(2)
(2)
(2)
(5)
(5)
(4)
Integrated Silicon Solution, Inc. — www.issi.com —
(1)
n-1
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
X
H
X
H
H
X
X
X
X
X
H
H
X
X
X
X
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
RAS
H
H
H
H
H
H
H
H
X
X
L
X
X
L
X
L
X
X
X
X
X
X
L
L
L
X
L
L
L
X
X
X
X
X
CAS
H
H
H
H
H
X
X
L
X
X
X
L
X
X
L
X
X
X
X
X
X
X
X
L
L
X
X
L
L
X
X
X
X
X
WE
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
H
X
X
X
H
X
X
X
X
X
L
L
1-800-379-4774
Op - Code
Op - Code
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
06/11/09
Rev. G