Introduction
1.5 Timings
Samsung ASIC
1-13
STDL130
1.5
Timings
1.5.1 WIRE LENGTH LOAD
Table 1-1, Table 1-2 and Appendix B show the equivalent standard load matrix
for 4, 5, and 6 metal layer interconnect. The equivalent standard load values are
a function of the gate count and fanout. These values are based on capacitive
loading and are used with wire length estimates which affect propagation delay.
Table 1-1.
Equivalent Standard Loads for 4-layer and 5-layer Metal Interconnect
Gate
Count
Fanouts
6
1
2
3
4
5
7
8
16
32
64
4LM
5000
10000
50000
100000
150000
200000
300000
400000
500000
600000
800000
1000000
1500000
2000000
2500000
3000000
4000000
5000000
6000000
5LM
5000
10000
50000
100000
150000
200000
300000
400000
500000
600000
800000
1000000
1500000
2000000
2500000
3000000
4000000
5000000
6000000
7000000
8000000
0.795
0.893
1.224
1.374
4.104
7.429
8.171
8.915
9.944
10.647
12.267
13.781
17.931
21.816
25.456
28.856
33.106
37.122
41.625
1.635
2.015
2.517
2.799
6.291
8.427
8.952
10.269
12.015
12.681
15.511
16.214
21.675
26.935
32.411
35.562
39.990
48.001
52.812
2.297
2.840
3.533
4.370
8.021
9.480
10.427
11.297
12.690
13.663
15.875
17.944
23.578
28.858
33.799
38.419
44.076
49.423
55.417
3.204
4.104
5.909
6.312
10.181
10.929
12.165
13.127
14.722
15.828
18.354
20.712
27.149
33.181
38.826
44.106
50.600
56.736
63.620
3.840
4.907
7.234
7.549
11.003
12.000
13.326
14.413
16.147
17.344
20.086
22.649
29.643
36.200
42.344
48.068
55.145
61.836
69.338
4.702
5.976
8.277
9.194
12.494
13.362
14.814
16.045
17.962
19.285
22.314
25.145
32.879
40.127
46.911
53.251
61.094
68.503
76.812
5.263
6.893
10.830
12.147
13.385
14.297
15.836
17.169
19.210
20.616
23.840
26.854
35.088
42.803
50.027
56.775
65.137
73.039
81.899
7.047
8.326
11.748
12.744
14.358
15.116
16.726
18.102
20.299
21.822
25.305
28.559
37.435
45.751
53.535
60.812
69.767
76.259
87.718
10.096
11.992
14.370
16.594
18.222
19.155
21.169
22.883
24.356
25.055
27.076
28.954
41.425
53.533
58.472
63.080
75.133
77.242
91.773
17.588
20.442
22.346
24.009
26.590
28.159
31.078
33.533
35.700
36.732
39.708
42.474
50.795
58.578
65.850
72.631
83.328
93.437
104.769
34.192
40.696
43.582
48.909
51.212
53.340
56.183
59.104
63.417
67.431
75.316
78.842
95.393
106.937
123.366
138.822
158.169
166.500
196.954
0.755
0.848
1.163
1.305
3.899
7.057
7.761
8.470
9.446
10.116
11.653
13.092
17.035
20.726
24.183
27.413
31.450
35.265
39.545
43.045
48.265
1.553
1.915
2.391
2.659
5.976
8.005
8.505
9.755
11.415
12.047
14.736
15.403
20.590
25.588
30.791
33.785
37.990
45.602
50.173
60.980
68.374
2.183
2.698
3.356
4.151
7.620
9.005
9.905
10.732
12.057
12.980
15.082
17.047
22.399
27.415
32.108
36.498
41.872
46.952
52.645
65.492
73.437
3.045
3.899
5.614
5.998
9.671
10.381
11.557
12.472
13.986
15.037
17.437
19.677
25.791
31.521
36.885
41.901
48.070
53.899
60.438
72.098
80.842
3.647
4.661
6.872
7.171
10.452
11.399
12.659
13.692
15.340
16.476
19.082
21.517
28.161
34.389
40.218
45.665
52.387
58.744
65.872
76.480
85.755
4.468
5.677
7.864
8.734
11.870
12.694
14.074
15.242
17.064
18.320
21.198
23.887
31.236
38.122
44.564
50.588
58.039
65.078
72.972
81.466
91.350
5.000
6.549
10.289
11.539
12.716
13.582
15.045
16.311
18.250
19.584
22.647
25.511
33.334
40.663
47.525
53.937
61.879
69.387
77.805
86.862
97.397
6.694
7.909
11.161
12.106
13.639
14.360
15.889
17.196
19.283
20.732
24.039
27.131
35.562
43.464
50.858
57.771
66.279
74.316
83.332
96.755
108.492
9.592
11.391
13.651
15.763
17.311
18.196
20.110
21.740
23.137
23.803
25.722
27.507
39.354
50.856
55.549
59.927
71.377
73.379
87.185
101.602
113.482
16.708
19.421
21.228
22.809
25.261
26.751
29.525
31.856
33.915
34.895
37.722
40.350
48.255
55.649
62.557
69.000
79.161
88.765
99.531
123.818
138.836
32.482
38.661
41.403
46.464
48.651
50.673
53.374
56.149
60.246
64.059
71.551
74.899
90.624
101.590
117.198
131.881
150.259
158.175
187.106
246.722
251.716