HYB18H1G321AF QIMONDA [Qimonda AG], HYB18H1G321AF Datasheet - Page 34

• Manufacturer Part Number: HYB18H1G321AF
• Description: GDDR3 Graphics RAM 1-Gbit GDDR3 Graphics RAM
• Manufacturer: QIMONDA [Qimonda AG]

5.8
Figure 18
and worst case conditions. The actual termination Pull-Up current must lie between these two bounding curves. The value of
the external ZQ resistor is 240 Ω, setting the nominal termination impedance to 120 Ω. (Extended Mode Register programmed
to ZQ/2 for DQ terminations or CKE = 0 at the RES transition during Power-Up for ADD/CMD terminations).
Table 18
Rev. 0.92, 2007-10
06122007-MW7D-3G3M
Voltage (V)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
lists the numerical values of the minimum and maximum allowed values of the termination IV characteristic.
represents the DQ or ADD/CMD termination Pull-Up IV characteristic under process, voltage and temperature best
Terminator Pull-Up Current (mA)
Minimum
-0.81
-1.60
-2.34
-3.06
-3.74
-4.39
-5.00
-5.58
-6.12
-6.63
Termination IV Characteristic at 120 Ohms
Maximum
-1.09
-2.14
-3.15
-4.12
-5.06
-5.94
-6.79
-7.59
-8.35
-9.06
34
Programmed Terminator Characteristics of 120 Ohm
Voltage (V)
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
120 Ohm Active Termination Characteristic
Terminator Pull-Up Current (mA)
Minimum
-7.11
-7.57
-8.02
-8.47
-8.91
-9.35
-9.79
-10.22
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HYB18H1G321AF–10/11/14
Internet Data Sheet
FIGURE 18
Maximum
-9.72
-10.42
-11.00
-11.67
-12.33
-13.05
-13.75
-14.43
-15.08
-15.69
TABLE 18
1-Gbit GDDR3