HYB18H256321BF QIMONDA [Qimonda AG], HYB18H256321BF Datasheet - Page 27
HYB18H256321BF
Manufacturer Part Number
HYB18H256321BF
Description
256-Mbit GDDR3 Graphics RAM GDDR3 Graphics RAM
Manufacturer
QIMONDA [Qimonda AG]
Datasheet
1.HYB18H256321BF.pdf
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4.7.2
Figure 15
conditions. The actual DQ termination Pull-Up current must lie between these two bounding curves. The value of the external
ZQ resistor is 240 Ω, setting the nominal DQ termination impedance to 60 Ω. (Extended Mode Register programmed to ZQ/4).
Rev. 0.80, 2007-09
09132007-07EM-7OYI
Voltage (V)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
represents the DQ termination Pull-Up IV characteristic under process, voltage and temperature best and worst case
Termination IV Characteristic at 60 Ohms
Minimum
2.32
4.56
6.69
8.74
10.70
12.56
14.34
16.01
17.61
19.11
20.53
21.92
23.29
24.65
26.00
27.35
28.70
30.08
—
—
Pull-Down Current (mA)
Maximum
3.04
5.98
8.82
11.56
14.19
16.72
19.14
21.44
23.61
26.10
28.45
30.45
32.73
34.95
37.10
39.15
41.01
42.53
43.71
44.89
27
Programmed Driver IV Characteristics at 40 Ohm
Minimum
-2.44
-4.79
-7.03
-9.18
-11.23
-13.17
-15.01
-16.74
-18.37
-19.90
.21.34
-22.72
-24.07
-25.40
-26.73
-28.06
-29.37
-30.66
—
—
Pull-Up Current (mA)
Maximum
-3.27
-6.42
-9.45
-12.37
-15.17
-17.83
-20.37
-22.78
-25.04
-27.17
-29.17
-31.25
-33.00
-35.00
-37.00
-39.14
-41.25
-43.29
-45.23
-47.07
Internet Data Sheet
HYB18H256321BF
256-Mbit GDDR3
TABLE 14
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