w9425g8dh Winbond Electronics Corp America, w9425g8dh Datasheet - Page 28

• Manufacturer Part Number: w9425g8dh
• Description: 8m ? 4 Banks ? 8 Bits Ddr Sdram
• Manufacturer: Winbond Electronics Corp America

Continued
9.7
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
SYM.
t
t
t
t
t
t
XSNR
XSRD
t
T(SS)
V
WTR
REFI
MRD
t
IPW
t
t
t
HZ
LZ
IS
IH
SWING (MAX)
AC Test Conditions
Control & Address Input Pulse Width (for each input)
Input Setup Time
Input Hold Time
Data-out High-impedance Time from CLK, CLK
Data-out Low-impedance Time from CLK, CLK
SSTL Input Transition
Internal Write to Read Command Delay
Exit Self Refresh to non-Read Command
Exit Self Refresh to Read Command
Refresh Time (8k)
Mode Register Set Cycle Time
SLEW = (V
T
IH
PARAMETER
min (AC) - V
PARAMETER
V
V
DD
SS
Q
IL
max (AC)) /
T
Output
T
V
V
V
IH
REF
IL
max (AC)
min (AC)
- 28 -
MIN.
-0.7
-0.7
200
0.6
0.6
2.2
0.5
75
10
2
Output
-5
V(out)
MAX.
0.7
0.7
1.5
7.8
SYMBOL
V
V
V
ID (AC)
V
V
V
V
OTR
REF
TT
IH
IL
R
Publication Release Date: Nov. 20
MIN.
0.75
0.75
-0.7
-0.7
200
2.2
0.5
72
12
Timing Reference Load
1
-6
MAX.
V
V
0.5 x V
0.5 x V
0.5 x V
0.7
0.7
1.5
7.8
REF
REF
VALUE
V
x (AC)
1.5
+ 0.31
- 0.31
DDQ
DDQ
DDQ
UNIT
t
t
µS
nS
nS
nS
CK
CK
VTT
Revision A4
30pF
50 Ω
UNIT
NOTES
V
V
V
V
V
V
V
,
2007