Rainbow Electronics W9864G2GH - Manual (Page 13)

W9864G2GH
Publication Release Date: August 16 ,2006
- 13 - Revision A01
SIMPLIFIED STATE DIAGRAM
Mode
Register
Set
IDLE
CBR
Refresh
Self
Refresh
ROW
ACTIVE
Power
Down
Precharge
POWER
ON
Active
Power
Down
WRITE
WRITE
SUSPEND
WRITEA
WRITEA
SUSPEND
READ
SUSPEND
READ
READA
SUSPEND
READA
Precharge
MRS REF
AC
T
CKE
CKE
CKE
CKE
CKE
CKE
CKE
CKE
CKE
CKE
SE
LF
SE
LF
e
xit
CK
E
CK
E
W
rit
e
w
ith
Read
Write
A
ut
o
pr
ec
ha
rg
e Au
to
p
re
ch
ar
ge
R
ea
d w
ith
Write
W
rit
e
Re
ad
P
R
E
(p
re
ch
ar
ge
te
rm
in
at
io
n) P
R
E
(p
re
ch
ar
ge
te
rm
in
ati
on
)
Read
BS
T BS
T
PR
E
Manual input
Automatic sequence
MRS = Mode Register Set
REF = Refresh
ACT = Active
PRE = Precharge
WRITEA = Write with Auto precharge
READA = Read with Auto precharge