Internet Data Sheet
HYB18H512321BF
512-Mbit GDDR3
4.6
Pin Capacitances
TABLE 13
Pin Capacitances (VDDQ = 1.8 V, TA = 25°C, f = 1 MHz)
Parameter
Symbol
Min.
Max.
Unit
Note
Input capacitance:
CI,CCK
1.0
2.5
pF
A0-A11, , BA0-2, CKE, CS, CAS, RAS, WE, CKE, RES,CLK,CLK
Input capacitance:
CIO
2.0
3.0
pF
DQ0-DQ31, RDQS0-RDQS3, WDQS0-WDQS3, DM0-DM3
4.7
Driver current characteristics
4.7.1
Driver IV characteristics at 40 Ohms
Figure 14 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 14
40 Ohm Driver Pull-Down and Pull-Up Characteristics
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3XOOꢃ'RZQꢀ&KDUDFWHUVWLFV
ꢀꢆꢀ
ꢀꢆꢁ
ꢂꢆꢀ
ꢂꢆꢁ
ꢃꢆꢀ
ꢁꢀ
ꢅꢁ
ꢅꢀ
ꢄꢁ
ꢄꢀ
ꢃꢁ
ꢃꢀ
ꢂꢁ
ꢂꢀ
ꢁ
ꢀ
ꢇꢁ
ꢇꢂꢀ
ꢇꢂꢁ
ꢇꢃꢀ
ꢇꢃꢁ
ꢇꢄꢀ
ꢇꢄꢁ
ꢇꢅꢀ
ꢇꢅꢁ
ꢇꢁꢀ
ꢀ
ꢀꢆꢀ
ꢀꢆꢁ
ꢂꢆꢀ
9RXWꢀꢁ9ꢂ
ꢂꢆꢁ
ꢃꢆꢀ
9''4ꢀꢃꢀ9RXWꢀꢁ9ꢂ
Table 14 lists the numerical values of the minimum and maximum allowed values of the output driver Pull-Down and Pull-Up
IV characteristics.
Rev. 1.3, 2007-12
24
05292007-WAU2-UU95
QIMONDA [ QIMONDA AG ]
