is43r32800 Integrated Silicon Solution, Inc., is43r32800 Datasheet - Page 9

• Manufacturer Part Number: is43r32800
• Description: 256mb Ddr Synchronous Dram
• Manufacturer: Integrated Silicon Solution, Inc.

FUNCTIONAL TRUTH TABLE (continued)
IS43R32800
Integrated Silicon Solution, Inc. — www.issi.com
Rev. A
01/14/09
ACTI VATING
C HARGI NG
Current State
COVERING
WRITER E-
PR E-
ROW
/CS /RAS /CAS /W E Address
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
L
H
H
H
H
H
H
X
L
L
L
X
L
L
L
L
X
L
L
L
L
X
H
H
H
H
X
H
H
H
H
X
H
H
H
H
L
L
L
L
L
L
L
L
L
X
X
H
X
X
H
X
X
H
H
H
L
H
H
L
H
H
L
L
L
L
L
L
L
X
BA
BA , C A, A8
BA , R A
BA , A 8
Op-C ode, M ode-
Add
X
BA
BA , C A, A8
BA , R A
BA , A 8
Op-C ode, M ode-
Add
X
BA
BA , C A, A8
BA , R A
BA , A 8
Op-C ode, M ode-
Add
X
X
X
X
X
X
Command
ACT
NOP
READ / WRITE
A CT
NOP
MR S
NOP
ACT
DES EL
PRE / PRE A
REF A
DES EL
PRE / PRE A
REF A
DESEL
PRE / PRE A
REF A
MRS
MRS
TERM
TERM
READ / WRITE
TERM
READ / WRITE
I LLEGAL
I LLEG AL
I LLEG AL
I LLEGAL
I LLEGAL
I LLEGAL
I LLEGAL
I LLEGA L
Action
NOP (I dle after tRP)
NOP (I dle after tRP)
IL LEG AL
IL LEG AL
IL LE GA L
NOP (I dle after tRP)
NOP (R ow Active after tRC D)
NOP (R ow Active after tRC D)
IL LEG AL
IL LEG AL
IL LE GA L
NOP
NOP
IL LE GA L
IL LE GA L
IL LEGA L
Notes
2
2
2
4
2
2
2
2
2
2
2
2
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