is43r32800 Integrated Silicon Solution, Inc., is43r32800 Datasheet - Page 8

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

IS43R32800
8
FUNCTIONAL TRUTH TABLE (continued)
Auto-Precharge
Auto-Precharge
WR IT E( Auto-
Current State /CS /RAS /CAS /WE Addres s
WRITE with
Precharge
READ with
Disabled)
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
X
L
L
L
L
X
L
L
L
L
X
L
L
L
L
X
H
H
L
L
H
H
L
L
X
H
H
L
L
H
H
L
L
X
H
H
L
L
H
H
L
L
X
H
H
X
H
H
X
H
H
H
L
H
L
H
L
H
L
H
L
H
L
L
L
L
L
L
L
BA
BA , C A, A8
BA , C A, A8
BA , R A
BA , A 8
Op-C ode, Mode-
Add
BA
BA , C A, A8
BA , C A, A8
BA , R A
BA , A 8
Op-C ode, M ode-
Add
BA
BA , C A, A8
BA , C A, A8
BA , R A
BA , A 8
Op-C ode, Mode-
Add
X
X
X
X
X
X
X
X
X
A CT
Command
WR ITE / WR IT EA
ACT
PRE / PRE A
MR S
ACT
PRE / PRE A
MR S
READ / READA
WR IT E / WR ITEA
PRE / PRE A
DES EL
NOP
REF A
DES EL
NOP
WRIT E / WR IT EA
REF A
DES EL
NOP
REF A
TERM
READ / READA
TERM
READ / READA
TERM
MRS
Integrated Silicon Solution, Inc. — www.issi.com
T erminate Burst, Precharge
I LL EGAL
P recharge / ILLEGAL
I LLEGAL
P recharge / ILLEGAL
I LLEGAL
I LL EGAL
I LLEGAL
I LLEGAL
Action
NO P (Continue Burst to END)
NO P (Continue Burst to END)
IL LE GAL
Terminate Burst, L atchCA , B egin
Read, Determine Auto-Precharge
Terminate Burst, L atchCA , B egin
Write, Determine Auto-Precharge
Bank Active / ILLE GAL
NO P (Continue Burst to END)
NO P (Continue Burst to END)
ILLE GAL
ILLE GAL
IL LE GAL
Bank Active / ILLE GAL
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLE GAL
ILLEGAL
ILLE GAL
Bank Active / ILLEGAL
Notes
3
3
2
2
2
2
2
Rev. A
01/14/09