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W9725G6KB
AC Characteristics and Operating Condition for -18 speed grade, continued
Notes: 1-3 and 45-47 apply to the entire table
SPEED GRADE
DDR2-1066 (-18)
SYM.
Bin(CL-t RCD -t RP)
PARAMETER
MIN.
7-7-7
MAX.
UNITS 25
NOTES
t WPRE
Write preamble
0.35
?
t CK(avg)
t WPST
t RPRE
t RPST
t DS(base)
t DH(base)
t DS(ref)
t DH(ref)
t DIPW
t HZ
t LZ(DQS)
t LZ(DQ)
t HP
t QHS
t QH
t XSNR
t XSRD
t XP
t XARD
t XARDS
t AOND
t AON
t AONPD
t AOFD
t AOF
t AOFPD
t ANPD
t AXPD
t MRD
t MOD
t OIT
t DELAY
Write postamble
Read preamble
Read postamble
DQ and DM input setup time
DQ and DM input hold time
DQ and DM input setup time
DQ and DM input hold time
DQ and DM input pulse width for each input
Data-out high-impedance time from CLK/ CLK
DQS/ DQS -low-impedance time from CLK/ CLK
DQ low-impedance time from CLK/ CLK
Clock half pulse width
Data hold skew factor
DQ/DQS output hold time from DQS
Exit Self Refresh to a non-Read command
Exit Self Refresh to a Read command
Exit precharge power down to any command
Exit active power down to Read command
Exit active power down to Read command
(slow exit, lower power)
ODT turn-on delay
ODT turn-on
ODT turn-on (Power Down mode)
ODT turn-off delay
ODT turn-off
ODT turn-off (Power Down mode)
ODT to power down Entry Latency
ODT Power Down Exit Latency
Mode Register Set command cycle time
MRS command to ODT update delay
OCD Drive mode output delay
Minimum time clocks remain ON after CKE
asynchronously drops LOW
0.4
0.9
0.4
0
75
200
200
0.35
?
t AC,min
2 x t AC,min
Min. (t CH(abs) ,
t CL(abs) )
?
t HP - t QHS
t RFC + 10
200
3
3
10 - AL
2
t AC,min
t AC,min + 2
2.5
t AC,min
t AC,min + 2
4
11
2
0
0
t IS +t CK(avg) +t IH
0.6
1.1
0.6
?
?
?
?
?
t AC,max
t AC,max
t AC,max
?
250
?
?
?
?
?
?
2
t AC,max + 2.575
3 x t CK(avg) +
t AC,max +1
2.5
t AC,max + 0.6
2.5 x t CK(avg) +
t AC,max + 1
?
?
12
12
?
t CK(avg)
t CK(avg)
t CK(avg)
pS
pS
pS
pS
t CK(avg)
pS
pS
pS
pS
pS
pS
nS
n CK
n CK
n CK
n CK
n CK
nS
nS
n CK
nS
nS
n CK
n CK
n CK
nS
nS
nS
12
14,36
14,37
16,27,29,
41,42,44
17,27,29,
41,42,44
16,27,29,
41,42,44
17,27,29,
41,42,44
15,35
15,35
15,35
32
33
34
23
18
18,19
20
20,35
21,39
21,38,39
23
23
22
Publication Release Date: Sep. 03, 2012
- 44 -
Revision A03
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