is42s16800a-7tli Integrated Silicon Solution, Inc., is42s16800a-7tli Datasheet - Page 10

• Manufacturer Part Number: is42s16800a-7tli
• Description: 16meg X 8, 8meg X16 & 4meg X 32 128-mbit Synchronous Dram - Integrated Silicon Solution, Inc
• Manufacturer: Integrated Silicon Solution, Inc.

IS42S81600A, IS42S16800A, IS42S32400A
Note: H=V
FUNCTIONAL TRUTH TABLE
Idle
Row Active
Read
Write
10
IH
, L=V
IL
x= V
CS
CS
CS
CS
CS
H
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
IH
or V
X
H
H
H
H
L
L
L
L
L
X
H
H
H
H
L
L
L
L
X
H
H
H
H
L
L
L
L
X
H
H
H
H
L
L
L
L
RAS
RAS
RAS
RAS
RAS CAS
IL
, V = Valid Data, BA= Bank Address, CA+Column Address, RA=Row Address, OC= Op-Code
CAS
CAS
CAS
CAS
X
H
H
L
L
H
H
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
L
H
L
H
L
H
L
L
X
H
L
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
X
H
L
H
L
H
L
H
L
WE
WE
WE
WE
WE
Integrated Silicon Solution, Inc. — www.issi.com —
Address
X
X
X
BA, CA, A10
A, CA, A10
BA, RA
BA, A10
X
OC, BA1=L
OC, BA1=H
X
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
OC, BA
X
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
OC, BA
X
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
OC, BA
Command
DESL
NOP
BST
READ/READA
WRIT/ WRITA
ACT
PRE/PALL
REF
MRS
EMRS
DESL
NOP
BST
READ/READA
WRIT/ WRITA
ACT
PRE/PALL
REF
MRS/EMRS
DESL
NOP
BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF
MRS/EMRS
DESL
NOP
BST
READ/READA
WRIT/WRITA
RA ACT
PRE/PALL
REF
MRS/EMRS
Precharge/Precharge all banks
PRELIMINARY INFORMATION Rev. 00C
Action
Nop
Nop
Nop
ILLEGAL
ILLEGAL
Row activating
Nop
Auto refresh
Mode register set
Extended mode register set
Nop
Nop
Nop
Begin read
Begin write
ILLEGAL
ILLEGAL
ILLEGAL
Continue burst to end to
Row active
Continue burst to end Row
Row active
Burst stop Row active
Terminate burst,
begin new read
Terminate burst,
begin write
ILLEGAL
Terminate burst
Precharging
ILLEGAL
ILLEGAL
Continue burst to end
Write recovering
Continue burst to end
Write recovering
Burst stop Row active
Terminate burst, start read :
Determine AP
Terminate burst, new write :
Determine AP
ILLEGAL
Terminate burst Precharging
ILLEGAL
ILLEGAL
(2)
(2)
(2)
(2)
(2)
(3)
(5, 6)
(3)
ISSI
(5, 6)
(5)
1-800-379-4774
(5)
01/20/05
(
®
(7)