is42s16160a1-7t Integrated Silicon Solution, Inc., is42s16160a1-7t Datasheet - Page 8

• Manufacturer Part Number: is42s16160a1-7t
• Description: 256 Mb Synchronous Dram
• Manufacturer: Integrated Silicon Solution, Inc.

IS42S83200A1
IS42S16160A1
8
FUNCTION TRUTH TABLE (continued)
PRECHARGE
PRECHARGE
Current State
WRITE with
READ with
WRITE
AUTO
AUTO
/CS
(4-bank x 8,388,608 - word x 8-bit)
(4-bank x 4,194,304 - word x 16-bit)
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
/RAS
X
H
H
H
H
X
H
H
H
H
X
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
/CAS
X
H
H
H
H
X
H
H
H
H
X
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
/WE
X
H
H
H
H
X
H
H
H
H
X
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
X
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
Op-Code,
Mode-Add
X
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
Op-Code,
Mode-Add
X
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
Op-Code,
Mode-Add
Address
READ / READA
READ / READA ILLEGAL
READ / READA ILLEGAL
Integrated Silicon Solution, Inc. — 1-800-379-4774
PRE / PREA
PRE / PREA
PRE / PREA
Command
WRITE /
WRITE /
WRITE /
WRITEA
WRITEA
WRITEA
DESEL
DESEL
DESEL
TBST
REFA
TBST
REFA
TBST
REFA
NOP
MRS
NOP
MRS
NOP
MRS
ACT
ACT
ACT
NOP (Continue Burst to END)
NOP (Continue Burst to END)
Terminate Burst
Terminate Burst, Latch CA,
Begin Read, Determine Auto-
Precharge*3
Terminate Burst, Latch CA,
Begin Write, Determine Auto-
Precharge*3
Bank Active / ILLEGAL*2
Terminate Burst, Precharge
ILLEGAL
ILLEGAL
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLEGAL
ILLEGAL
Bank Active / ILLEGAL*2
ILLEGAL*2
ILLEGAL
ILLEGAL
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLEGAL
ILLEGAL
Bank Active / ILLEGAL*2
ILLEGAL*2
ILLEGAL
ILLEGAL
Action
ISSI
10/28/05
Rev. B
®