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W9412G2IB Datasheet(PDF) 29 Page - Winbond

Part # W9412G2IB
Description  1M 횞 4 BANKS 횞 32 BITS GDDR SDRAM
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W9412G2IB Datasheet(HTML) 29 Page - Winbond

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W9412G2IB
Publication Release Date: Aug. 30, 2010
- 29 -
Revision A06
AC Characteristics and Operating Condition, continued
-4
-5/-5I
-6/-6I
SYM.
PARAMETER
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
UNIT NOTES
tWPREH
Clock to DQS Write Preamble Hold Time
0.25
0.25
0.25
tWPST
DQS Write Postamble Time
0.4
0.6
0.4
0.6
0.4
0.6
tDQSS
Write Command to First DQS Latching
Transition
0.72
1.25
0.72
1.25
0.75
1.25
tCK
11
tIS
Input Setup Time
0.75
0.75
0.8
tIH
Input Hold Time
0.75
0.75
0.8
tHZ
Data-out
High-impedance
Time
from
CLK, CLK
0.7
0.7
0.7
tLZ
Data-out
Low-impedance
Time
from
CLK, CLK
-0.7
0.7
-0.7
0.7
-0.7
0.7
tT(SS)
SSTL Input Transition
0.5
1.5
0.5
1.5
0.5
1.5
nS
tWTR
Internal Write to Read Command Delay
2
2
1
tCK
tXSNR
Exit Self Refresh to non-Read Command
72
75
75
nS
tXSRD
Exit Self Refresh to Read Command
200
200
200
tCK
tREFi
Refresh Interval Time (4K/64mS)
15.6
15.6
15.6
µS
17
tMRD
Mode Register Set Cycle Time
8
10
12
nS
9.7 AC Test Conditions
PARAMETER
SYMBOL
VALUE
UNIT
Input High Voltage (AC)
VIH
VREF + 0.31
V
Input Low Voltage (AC)
VIL
VREF - 0.31
V
Input Reference Voltage
VREF
0.5 x VDDQ
V
Termination Voltage
VTT
0.5 x VDDQ
V
Input Signal Peak to Peak Swing
VSWING
1.0
V
Differential Clock Input Reference Voltage
VR
Vx (AC)
V
Input Difference Voltage. CLK and CLK Inputs (AC)
VID (AC)
1.5
V
Input Signal Minimum Slew Rate
SLEW
1.0
V/nS
Output Timing Measurement Reference Voltage
VOTR
0.5 x VDDQ
V


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