參數(shù)資料
型號: HYB18H1G321AF
廠商: QIMONDA
英文描述: GDDR3 Graphics RAM 1-Gbit GDDR3 Graphics RAM
中文描述: GDDR3顯卡內(nèi)存1千兆位GDDR3顯卡內(nèi)存
文件頁數(shù): 31/48頁
文件大?。?/td> 1406K
代理商: HYB18H1G321AF
HYB18H1G321AF–10/11/14
1-Gbit GDDR3
Internet Data Sheet
Rev. 0.92, 2007-10
06122007-MW7D-3G3M
31
5.6
Pin Capacitances
TABLE 15
Pin Capacitances (VDDQ = 1.8 V, TA = 25°C, f = 1 MHz)
5.7
Driver current characteristics
5.7.1
Driver IV characteristics at 40 Ohms
Figure 16
represents the driver Pull-Down and Pull-Up IV characteristics under process, voltage and temperature best and
worst case conditions. The actual Driver Pull-Down and Pull-Up current must lie between these two bounding curves. The value
of the external ZQ resistor is 240
Ω
, setting the nominal driver output impedance to 40
Ω
.
FIGURE 16
40 Ohm Driver Pull-Down and Pull-Up Characteristics
Table 16
lists the numerical values of the minimum and maximum allowed values of the output driver Pull-Down and Pull-Up
IV characteristics.
Parameter
Symbol
Min.
Max.
Unit
Note
Input capacitance:
A0-A11,A12, , BA0-2, CKE, CS, CAS, RAS, WE, CKE,
RES,CLK,CLK
Input capacitance:
DQ0-DQ31, RDQS0-RDQS3, WDQS0-WDQS3, DM0-DM3
CI,CCK
1.0
2.5
pF
CIO
2.0
3.0
pF
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相關(guān)代理商/技術(shù)參數(shù)
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