VIS
Basic Features and Function description
1.Simplified State Diagram
Preliminary
VG3617161DT
16Mb CMOS Synchronous Dynamic RAM
Self
Refresh
try
en
LF
SE
Mode
Register
Set
MRS
IDLE
LF
SE
it
ex
REF
AUTO
Refresh
CK
E
E
CK
ROW
ACTIVE
BS
T
ACT
Power
Down
CKE
CKE
T
BS
Active
Power
Down
ad
Re
W
rit
e
Au Write
to p
red with
har
ge
h
wit rge
ad cha
Re Pre
to
Au
Write
Read
PRE
WRITE
SUSPEND
CKE
CKE
WRITE
Read
READ
CKE
CKE
READ
SUSPEND
Write
Write with
Auto Precharge
AutoRead w
Prec ith
harg
e
E(P
PR
with
rge
ead
recha
R
P
o
Aut
ter
min
atio
n
)
Read with
Auto Precharge
WRITE A
SUSPEND
CKE
CKE
WRITE A
CKE
READ A
CKE
READ A
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
Document:1G5-0160
Rev.1
PR
E(P
rec
h
arg
e
n)
rec
rge
ha
m
ter
tio
ina
Page 9
VML [ VANGUARD INTERNATIONAL SEMICONDUCTOR ]
