W9425G8EH Datasheet, PDF (23/53 Pages) Winbond – 8M × 4 BANKS × 8 BITS DDR SDRAM

W9425G8EH
9. ELECTRICAL CHARACTERISTICS
9.1 Absolute Maximum Ratings
PARAMETER
SYMBOL
RATING
UNIT
Input/Output Voltage
VIN, VOUT
-0.3 ~ VDDQ + 0.3
V
Power Supply Voltage
VDD, VDDQ
-0.3 ~ 3.6
V
Operating Temperature
TOPR
0 ~ 70
°C
Storage Temperature
TSTG
-55 ~ 150
°C
Soldering Temperature (10s)
TSOLDER
260
°C
Power Dissipation
PD
1
W
Short Circuit Output Current
IOUT
50
mA
Note: Stresses greater than those listed under ”Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only, and functional operation of the device at these or any other conditions above those indicated in
the operational sections of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect reliability.
9.2 Recommended DC Operating Conditions
(TA = 0 to 70°C)
SYMBOL
PARAMETER
VDD
Power Supply Voltage
VDDQ
Power Supply Voltage (for I/O
Buffer)
VREF Input reference Voltage
VTT
Termination Voltage (System)
VIH (DC) Input High Voltage (DC)
VIL (DC) Input Low Voltage (DC)
VICK (DC) Differential Clock DC Input Voltage
VID (DC)
Input Differential Voltage.
CLK and CLK inputs (DC)
MIN.
2.3
TYP.
2.5
2.3
2.5
0.49 x VDDQ
VREF - 0.04
VREF + 0.15
-0.3
-0.3
0.50 x VDDQ
VREF
-
-
-
0.36
-
VIH (AC)
VIL (AC)
VID (AC)
Input High Voltage (AC)
Input Low Voltage (AC)
Input Differential Voltage.
CLK and CLK inputs (AC)
VREF + 0.31
-
-
-
0.7
-
VX (AC)
Differential AC input Cross Point
Voltage
VDDQ/2 - 0.2
-
VISO (AC) Differential Clock AC Middle Point
VDDQ/2 - 0.2
-
Notes: Undershoot Limit: VIL (min) = -1.5V with a pulse width < 5 nS
Overshoot Limit: VIH (max) = VDDQ +1.5V with a pulse width < 5 nS
VIH (DC) and VIL (DC) are levels to maintain the current logic state.
VIH (AC) and VIL (AC) are levels to change to the new logic state.
MAX.
2.7
2.7
0.51 x VDDQ
VREF + 0.04
VDDQ + 0.3
VREF - 0.15
VDDQ + 0.3
VDDQ + 0.6
-
VREF - 0.31
VDDQ + 0.6
VDDQ/2 + 0.2
VDDQ/2 + 0.2
UNIT NOTES
V
2
V
2
V
2, 3
V
2, 8
V
2
V
2
V
15
V
13, 15
V
2
V
2
V
13, 15
V
12, 15
V
14, 15
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Publication Release Date: Jul. 04, 2008
Revision A01