DDRSDRAM Datasheet, PDF (46/49 Pages) Samsung semiconductor – DDR SDRAM Specification Version 0.61

128Mb DDR SDRAM
Target
Pulldown Current (mA)
pullup Current (mA)
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
2.1
2.2
2.3
2.4
2.5
Normal
Low
5.7
11.5
17.1
22.7
28.1
32.6
37.2
41.2
44.8
48.4
51.0
53.0
54.6
55.9
56.7
57.1
57.5
58.0
58.5
59.0
59.3
59.7
60.2
60.5
60.9
Normal
High
6.4
12.7
19.0
25.1
31.1
36.9
41.7
47.0
52.1
56.9
61.5
65.9
70.0
74.0
77.6
81.0
84.1
87.0
89.9
91.7
93.5
95.2
96.1
97.0
97.9
Minimum
4.3
8.7
13.0
17.4
21.7
26.1
30.4
34.7
37.4
40.2
42.3
43.6
44.4
44.7
45.0
45.3
45.7
46.1
46.3
46.6
46.8
47.0
47.1
47.2
47.4
Maximum
8.3
16.5
24.4
32.0
39.4
46.6
53.6
59.6
65.9
72.0
77.8
83.3
88.5
93.5
97.9
102.3
105.8
109.3
112.8
116.3
119.3
122.2
124.9
127.4
129.5
Normal
Low
-5.8
-11.5
-17.1
-22.6
-28.1
-32.4
-35.9
-38.8
-41.3
-43.4
-45.1
-46.4
-47.2
-47.6
-47.8
-48.1
-48.2
-48.4
-48.6
-48.7
-48.9
-49.1
-49.2
-49.3
-49.5
Normal
High
-7.2
-13.7
-20.0
-26.1
-32.2
-38.2
-44.2
-50.1
-56.0
-61.8
-67.5
-73.2
-78.9
-84.6
-90.1
-95.6
-101.0
-106.0
-112.0
-117.0
-122.0
-127.0
-132.0
-137.0
-142.0
Minimum
-4.3
-8.7
-13.0
-17.4
-21.7
-26.1
-30.4
-34.0
-36.0
-36.5
-36.8
-37.0
-37.2
-37.4
-37.6
-37.8
-37.9
-38.0
-38.1
-38.2
-38.3
-38.4
-38.5
-38.6
-38.7
Temperature (Tjunction)
Table 17. Pull down and pull up current values
Maximum
-8.6
-17.0
-25.3
-33.6
-41.7
-49.6
-57.5
-65.2
-72.9
-80.4
-87.7
-94.9
-102.0
-109.0
-116.0
-123.0
-129.0
-136.0
-142.0
-148.0
-154.0
-160.0
-166.0
-171.0
-177.0
Typical
Minimum
Maximum
50°C
0°C
0°C
Vdd/Vddq
Normal
Minimum
Maximum
2.5V
2.3V
2.7V
The adove characteristics are specied under best, worst and normal process variation/conditions
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REV. 0.61 August 9. '99