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WV3HG264M72EEU806D6SG bảng dữ liệu(PDF) 7 Page - White Electronic Designs Corporation

tên linh kiện WV3HG264M72EEU806D6SG
Giải thích chi tiết về linh kiện  1GB - 2x64Mx72 DDR2 SDRAM UNBUFFERED
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nhà sản xuất  WEDC [White Electronic Designs Corporation]
Trang chủ  http://www.whiteedc.com
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WV3HG264M72EEU-D6
January 2006
Rev. 0
ADVANCED
7
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
AC TIMING PARAMETERS
0°C ≤ TCASE < +85°C; VCCQ = + 1.8V ± 0.1V, VCC = +1.8V ± 0.1V
AC CHARACTERISTICS
806
665
534
403
PARAMETER
SYMBOL
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
Clock cycle time
CL = 6
tCK (6)
TBD
TBD
ps
CL = 5
tCK (5)
TBD
TBD
3000
8000
ps
CL = 4
tCK (4)
TBD
TBD
3750
8000
3,750
8,000
5,000
8,000
ps
CL = 3
tCK (3)
TBD
TBD
5000
8000
5,000
8,000
5,000
8,000
ps
CK high-level width
tCH
TBD
TBD
0.45
0.55
0.45
0.55
0.45
0.55
tCK
CK low-level width
tCL
TBD
TBD
0.45
0.55
0.45
0.55
0.45
0.55
tCK
Half clock period
tHP
TBD
TBD
MIN (tCH,
tCL)
MIN (tCH,
tCL)
MIN (tCH,
tCL)
ps
DQ output access time from CK/CK#
tAC
TBD
TBD
-450
+450
-500
+500
-600
+600
ps
Data-out high-impedance window from
CK/CK#
tHZ
TBD
TBD
tAC (MAX)
tAC (MAX)
tAC (MAX)
ps
Data-out low-impedance window from
CK/CK#
tLZ
TBD
TBD
tAC (MIN)
tAC (MAX)
tAC (MIN)
tAC (MAX)
tAC (MIN)
tAC (MAX)
ps
DQ and DM input setup time relative to DQS
tDS
TBD
TBD
100
100
150
ps
DQ and DM input hold time relative to DQS
tDH
TBD
TBD
225
225
275
ps
A DQ and DM input pulse width (for each
input)
tDIPW
TBD
TBD
0.35
0.35
0.35
tCK
Data hold skew factor
tQHS
TBD
TBD
340
400
450
ps
DQ…DQS hold, DQS to first DQ to go
nonvalid, per access
tQH
TBD
TBD
tHP - tQHS
tHP - tQHS
tHP - tQHS
ps
Data valid output window (DVW)
tDVW
TBD
TBD
tQH
- tDQSQ
tQH
- tDQSQ
tQH
- tDQSQ
ns
DQS input high pulse width
tDQSH
TBD
TBD
0.35
0.35
0.35
tCK
DQS input low pulse width
tDQSL
TBD
TBD
0.35
0.35
0.35
tCK
DQS output access time from CK/CK#
tDQSCK
TBD
TBD
-400
+400
-450
+450
-500
+500
ps
DQS falling edge to CK rising … setup time
tDSS
TBD
TBD
0.2
0.2
0.2
tCK
DQS falling edge from CK rising … hold time
tDSH
TBD
TBD
0.2
0.2
0.2
tCK
DQS…DQ skew, DQS to last DQ valid, per
group,
per access
tDQSQ
TBD
TBD
240
300
350
ps
DQS read preamble
tRPRE
TBD
TBD
0.9
1.1
0.9
1.1
0.9
1.1
tCK
DQS read postamble
tRPST
TBD
TBD
0.4
0.6
0.4
0.6
0.4
0.6
tCK
DQS write preamble setup time
tWPRES
TBD
TBD
000
ps
DQS write preamble
tWPRE
TBD
TBD
0.35
0.35
0.35
tCK
DQS write postamble
tWPST
TBD
TBD
0.4
0.6
0.4
0.6
0.4
0.6
tCK
Write command to first DQS latching
transition
tDQSS
TBD
TBD
WL
- 0.25
WL +
0.25
WL
- 0.25
WL +
0.25
WL
- 0.25
WL +
0.25
tCK
Address and control input pulse width for
each input
tIPW
TBD
TBD
0.6
0.6
0.6
tCK
NOTE:
• AC specification is based on SAMSUNG components. Other DRAM manufactures specification may be different.
Continued on next page


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