ESMT
AC Timing Parameter & Specifications-continued
Parameter
Half Clock Period
DQ-DQS output hold time
Data hold skew factor
ACTIVE to PRECHARGE command
Row Cycle Time
AUTO REFRESH Row Cycle Time
ACTIVE to READ,WRITE delay
PRECHARGE command period
ACTIVE to READ with AUTOPRECHARGE
command
ACTIVE bank A to ACTIVE bank B
command
Write recovery time
Write data in to READ command delay
Col. Address to Col. Address delay
Average periodic refresh interval
Write preamble
Write postamble
DQS read preamble
DQS read postamble
Clock to DQS write preamble setup time
Load Mode Register / Extended Mode
register cycle time
Exit self refresh to READ command
Exit self refresh to non-READ command
Autoprecharge write recovery + Precharge
time
Symbol
t
HP
t
QH
t
QHS
t
RAS
t
RC
t
RFC
t
RCD
t
RP
t
RAP
t
RRD
t
WR
t
WTR
t
CCD
t
REFI
t
WPRE
t
WPST
t
RPRE
t
RPST
t
WPRES
t
MRD
t
XSRD
t
XSNR
t
DAL
-4
min
t
CL
min or
t
CH
min
t
HP
-t
QHS
-
40
52
64
15
15
18
8
15
2
1
-
0.25
0.4
0.9
0.4
0
2
200
75
30
max
-
-
0.45
70K
-
-
-
-
120K
-
-
-
-
7.8
-
0.6
1.1
0.6
-
-
-
-
-
min
t
CL
min or
t
CH
min
t
HP
-t
QHS
-
40
55
70
15
15
18
10
15
2
1
-
0.25
0.4
0.9
0.4
0
2
200
75
30
-5
M13S2561616A
-6
max
-
-
0.45
70K
-
-
-
-
120K
-
-
-
-
7.8
-
0.6
1.1
0.6
-
-
-
-
-
min
t
CL
min or
t
CH
min
t
HP
-t
QHS
-
42
60
72
18
18
18
12
15
1
1
-
0.25
0.4
0.9
0.4
0
1
200
75
-
max
-
-
0.5
70K
-
-
-
-
120K
-
-
-
-
7.8
-
0.6
1.1
0.6
-
-
-
-
30
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
CK
t
CK
us
t
CK
t
CK
t
CK
t
CK
ns
t
CK
t
CK
ns
ns
Elite Semiconductor Memory Technology Inc.
Publication Date : Sep. 2009
Revision : 2.0
7/49
ESMT [ ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC. ]
