W9464G6IH Datasheet, PDF (28/54 Pages) Winbond – 1M × 4 BANKS × 16 BITS DDR SDRAM

W9464G6IH
AC Characteristics and Operating Condition, continued
SYM.
tWPRE
tWPST
tDQSS
tIS
tIH
tIS
tIH
tIPW
tHZ
PARAMETER
-4
MIN. MAX.
DQS Write Preamble Time
0.25
DQS Write Postamble Time
0.4 0.6
Write Command
Transition
to
First
DQS
Latching
0.85
1.15
Input Setup Time (fast slew rate)
0.6
Input Hold Time (fast slew rate)
0.6
Input Setup Time (slow slew rate)
0.7
Input Hold Time (slow slew rate)
0.7
Control & Address Input Pulse Width (for each
input)
2.2
Data-out High-impedance Time from
0.7
CLK, CLK
-5/-5I
MIN. MAX.
0.25
0.4 0.6
0.72 1.25
0.6
0.6
0.7
0.7
2.2
0.7
-6/-6I
MIN. MAX.
0.25
0.4 0.6
0.75 1.25
0.75
0.75
0.8
0.8
2.2
0.7
UNIT NOTES
tCK
11
19, 21-23
19, 21-23
20-23
20-23
nS
Data-out Low-impedance Time from
tLZ
-0.7 0.7 -0.7 0.7 -0.7 0.7
CLK, CLK
tT(SS)
tWTR
tXSNR
tXSRD
tREFi
tMRD
SSTL Input Transition
Internal Write to Read Command Delay
Exit Self Refresh to non-Read Command
Exit Self Refresh to Read Command
Refresh Interval Time (4k/ 64mS)
Mode Register Set Cycle Time
0.5 1.5 0.5 1.5 0.5 1.5
2
2
1
tCK
75
75
75
nS
200
200
200
tCK
15.6
15.6
15.6 µS
17
8
10
12
nS
9.7 AC Test Conditions
PARAMETER
Input High Voltage (AC)
Input Low Voltage (AC)
Input Reference Voltage
Termination Voltage
Differential Clock Input Reference Voltage
Input Difference Voltage. CLK and CLK Inputs (AC)
Output Timing Measurement Reference Voltage
SYMBOL
VIH
VIL
VREF
VTT
VR
VID (AC)
VOTR
VALUE
VREF + 0.31
VREF - 0.31
0.5 x VDDQ
0.5 x VDDQ
Vx (AC)
1.5
0.5 x VDDQ
UNIT
V
V
V
V
V
V
V
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Publication Release Date:Mar. 17, 2010
Revision A04