eorex
(V
DD
=1.8V±0.1V, T
A
=0°C ~70°C)
Symbol
t
RPST
t
RAS
t
RC
t
RFC
t
RCD
t
RP
t
RRD
t
CCD
t
HZP
t
CDLW
t
DPL
t
SREX
t
WTR
t
CKE
t
WPD
t
RPD
t
WRD
t
BSTW
t
WRD
t
REFI
Parameter
Read Postamble
Preliminary
EM42BM1684LBB
AC Operating Test Characteristics (Continued)
-75
Min.
0.4
45
75
108
30
22.5
15
1
3
1
3
16
1
2
3+BL/2
BL/2
2+BL/2
3
2
-
Max.
0.6
120k
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
7.8
Units
t
CK
ns
ns
ns
ns
ns
ns
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
us
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
Pre-charge command to high-Z
Last data in to Write command
Last data in to Precharge command
Exit self refresh to non-col. command
Internal Write to Read command delay
CKE minimum pulse width
Write to pre-charge delay(same bank)
Read to pre-charge delay(same bank)
Write to Read command delay
Burst stop to write delay
Write recovery
Average periodic refresh interval
Jul. 2006
8/20
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EOREX [ EOREX CORPORATION ]
