IS42S16800E View Datasheet(PDF) - Integrated Silicon Solution
Part Name
Description
Manufacturer
IS42S16800E Datasheet PDF : 61 Pages
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IS42S81600E, IS42S16800E
FUNCTIONAL TRUTH TABLE
Current State
CS RAS CAS WE
Idle
HX
X
X
LH
H
H
LH
H
L
LH
L
H
LH
L
L
LL
H
H
LL
H
L
LL
L
H
LL
L
L
Row Active
HX
X
X
LH
H
H
LH
H
L
LH
L
H
LH
L
L
LL
H
H
LL
H
L
Read
LL
L
H
LL
L
L
HX
X
X
Address
X
X
X
BA, CA, A10
A, CA, A10
BA, RA
BA, A10
X
OC, BA1=L
X
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
OC, BA
X
Command
DESL
NOP
BST
READ/READA
WRIT/ WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP
BST
READ/READA
WRIT/ WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
LH
H
H
X
NOP
LH
H
L
X
BST
LH
L
H
BA, CA, A10
READ/READA
LH
L
L
BA, CA, A10
WRIT/WRITA
LL
H
H
BA, RA
ACT
LL
H
L
BA, A10
PRE/PALL
Write
LL
L
H
LL
L
L
HX
X
X
X
OC, BA
X
REF/SELF
MRS
DESL
LH
H
H
X
NOP
LH
H
L
LH
L
H
X
BA, CA, A10
BST
READ/READA
LH
L
L
BA, CA, A10
WRIT/WRITA
LL
H
H
LL
H
L
LL
L
H
LL
L
L
BA, RA
BA, A10
X
OC, BA
RA ACT
PRE/PALL
REF/SELF
MRS
Action
Nop or Power Down(2)
Nop or Power Down(2)
Nop or Power Down
ILLEGAL (3)
ILLEGAL(3)
Row activating
Nop
Auto refresh or Self-refresh(4)
Mode register set
Nop
Nop
Nop
Begin read (5)
Begin write (5)
ILLEGAL (3)
Precharge
Precharge all banks(6)
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 (7)
Terminate burst,
begin write (7,8)
ILLEGAL (3)
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 (7,8)
Terminate burst, new write :
Determine AP (7)
ILLEGAL (3)
Terminate burst Precharging (9)
ILLEGAL
ILLEGAL
Note: H=Vih, L=Vil x= Vih or Vil, V = Valid Data, BA= Bank Address, CA+Column Address, RA=Row Address, OC= Op-Code
10
Integrated Silicon Solution, Inc. — www.issi.com
Rev. B
05/27/09
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