IC42S81600/IC42S81600L
IC42S16800/IC42S16800L
Basic Features and Function Description
Simplified State Diagram
Self
Refresh
LF
SE
Mode
Register
Set
try
en
it
ex
REF
AUTO
Refresh
MRS
IDLE
LF
SE
CK
E
E
CK
ROW
ACTIVE
ACT
Power
Down
CKE
CKE
Active
Power
Down
BS
T
T
BS
ad
Re
W
rit
e
Au Write
to p
rec with
har
ge
h
wit rge
ad cha
Re Pre
to
Au
re
co
ve
r
y
Write (Write recovery)
Read
PRE
W
rit
e
WRITE
SUSPEND
CKE
CKE
WRITE
Read (write recovery)
Write
READ
CKE
CKE
READ
SUSPEND
Write with
Auto Precharge
R
Auto ead w
Pre ith
cha
rge
with
ge
rite
echar
W
Pr
uto
(wri
A
t
e re
cov
ery)
Read with
Auto Precharge
ter
min
atio
n
rge
cha
P re
E(
PR
)
WRITE A
SUSPEND
CKE
CKE
WRITE A
CKE
READ A
CKE
READA
SUSPEND
POWER
ON
Precharge
Precharge
Automatic sequence
Manual input
Note: After the AUTO refresh operation, precharge operation is
performed automatically and enter the IDLE state
10
PR
E
(P r
ech
arg
e
m
ter
tio
ina
n)
Integrated Circuit Solution Inc.
DR023-0E 6/11/2004
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
