Internet Data Sheet
HYB18H1G321AF–10/11/14
1-Gbit GDDR3
5.6
Pin Capacitances
TABLE 15
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,A12, , 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
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
3XOOꢃ8Sꢀ&KDUDFWHUVWLFV
3XOOꢃ'RZQꢀ&KDUDFWHUVWLFV
ꢀꢋꢀ
ꢀꢋꢅ
ꢂꢋꢀ
ꢂꢋꢅ
ꢃꢋꢀ
ꢅꢀ
ꢄꢅ
ꢄꢀ
ꢈꢅ
ꢈꢀ
ꢃꢅ
ꢃꢀ
ꢂꢅ
ꢂꢀ
ꢅ
ꢀ
ꢏꢅ
ꢏꢂꢀ
ꢏꢂꢅ
ꢏꢃꢀ
ꢏꢃꢅ
ꢏꢈꢀ
ꢏꢈꢅ
ꢏꢄꢀ
ꢏꢄꢅ
ꢏꢅꢀ
ꢀ
ꢀꢋꢀ
ꢀꢋꢅ
ꢂꢋꢀ
9RXWꢀꢁ9ꢂ
ꢂꢋꢅ
ꢃꢋꢀ
9''4ꢀꢃꢀ9RXWꢀꢁ9ꢂ
Table 16 lists the numerical values of the minimum and maximum allowed values of the output driver Pull-Down and Pull-Up
IV characteristics.
Rev. 0.92, 2007-10
31
06122007-MW7D-3G3M
QIMONDA [ QIMONDA AG ]
