参数资料
型号: W9425G6DH-6I
厂商: WINBOND ELECTRONICS CORP
元件分类: DRAM
英文描述: 16M X 16 DDR DRAM, 0.7 ns, PDSO66
封装: 0.400 INCH, 0.65 MM PITCH, ROHS COMPLIANT, TSOP2-66
文件页数: 21/53页
文件大小: 1817K
代理商: W9425G6DH-6I
W9425G6DH
Publication Release Date:Feb. 12, 2008
- 28 -
Revision A8
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
Differential Clock Input Reference Voltage
VR
Vx (AC)
V
Input Difference Voltage. CLK and CLK Inputs (AC)
VID (AC)
1.5
V
Output Timing Measurement Reference Voltage
VOTR
0.5 x VDDQ
V
V SWING (MAX)
VDDQ
VSS
T
VIH min (AC)
VREF
VIL max (AC)
SLEW = (VIH min (AC) - VILmax (AC)) / T
Output
50 Ω
VTT
Timing Reference Load
Output
V(out)
30pF
Notes:
(1)
Conditions outside the limits listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
(2)
All voltages are referenced to VSS, VSSQ.( 2.6V
±0.1V for DDR400/DDR500)
(3)
Peak to peak AC noise on VREF may not exceed
±2% VREF(DC).
(4)
VOH = 1.95V, VOL = 0.35V
(5)
VOH = 1.9V, VOL = 0.4V
(6)
The values of IOH(DC) is based on VDDQ = 2.3V and VTT = 1.19V.
The values of IOL(DC) is based on VDDQ = 2.3V and VTT = 1.11V.
(7)
These parameters depend on the cycle rate and these values are measured at a cycle rate with the minimum values
of tCK and tRC.
(8)
VTT is not applied directly to the device. VTT is a system supply for signal termination resistors is expected to be set
equal to VREF and must track variations in the DC level of VREF.
(9)
These parameters depend on the output loading. Specified values are obtained with the output open.
(10)
Transition times are measured between VIH min(AC) and VIL max(AC).Transition (rise and fall) of input signals have a fixed
slope.
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