eorex
(V
DD
=1.8V±0.1V, T
A
=0°C ~85°
C)
Symbol
t
RPST
t
RAS
t
RC
t
RFC
t
RCD
t
RP
t
RRD
t
CCD
t
WR
t
DAL
t
XSRD
t
XSNR
t
XARD
t
XARDS
t
XP
t
WTR
t
RTP
t
CKE
t
WPD
t
RPD
t
OIT
t
REFI
Parameter
Read Postamble
Active to Precharge command period
Active to Active command period
Auto Refresh Row Cycle Time
Active to Read or Write delay
Precharge command period
Active bank A to B command period
Column address to column address
delay
Write recovery time
Auto Pre-charge write recovery +
pre-charge time
Exit self refresh to Read command
Exit self refresh to non-read command
Exit active power-down mode to Read
command (Fast exit)
Exit active power-down mode to Read
command (Slow exit)
Exit pre-charge power-down to any
non-read command
Internal Write to Read command delay
Internal Read to pre-charge delay
CKE minimum pulse width
Write to pre-charge delay(same bank)
Read to pre-charge delay(same bank)
OCD drive mode output delay
Average periodic refresh interval
-3
Min.
0.4
45
60
105
15
15
10
2
15
t
RP+
t
WR
200
115
2
7-AL
2
7.5
7.5
3
WL+
BL/2 +
EM44AM1684LBC
AC Operating Test Characteristics (Continued)
-37
Min.
Max.
0.4
0.6
45
60
105
15
15
10
2
15
t
RP+
t
WR
200
115
2
6-AL
2
7.5
7.5
3
WL+
BL/2 +
-5
Min.
0.4
45
60
105
15
15
10
2
15
t
RP+
t
WR
200
115
2
6-AL
2
10
7.5
3
WL+
BL/2 +
Unit
Max.
0.6
70K
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
12
7.8
t
CK
ns
ns
ns
ns
ns
ns
t
CK
ns
t
CK
t
CK
ns
t
CK
t
CK
t
CK
ns
ns
t
CK
t
CK
t
CK
ns
us
Max.
0.6
70K
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
12
7.8
70K
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
12
7.8
t
WR
AL+
BL/2+1
t
WR
AL+
BL/2+1
t
WR
AL+
BL/2+1
0
-
0
-
0
-
Jul. 2006
11/29
www.eorex.com
EOREX [ EOREX CORPORATION ]
