A1020B-PL84C Datasheet, PDF (11/24 Pages) Actel Corporation – ACT™ 1 Series FPGAs

ACT^™ 1 Series FPGAs
Timing Derating
A best case timing derating factor of 0.45 is used to reflect
best case processing. Note that this factor is relative to the
“standard speed” timing parameters, and must be multiplied
by the appropriate voltage and temperature derating factors
for a given application.
Timing Derating Factor (Temperature and Voltage)
Industrial
Military
Min.
Max.
Min.
Max.
(Commercial Minimum/Maximum Specification) x
0.69
1.11
0.67
1.23
Timing Derating Factor for Designs at Typical Temperature (T_J = 25°C) and
Voltage (5.0 V)
(Commercial Maximum Specification) x
0.85
Temperature and Voltage Derating Factors
(normalized to Worst-Case Commercial, T_J = 4.75 V, 70°C)
–55
–40
0
25
70
85
125
4.50
0.75
0.79
0.86
0.92
1.06
1.11
1.23
4.75
0.71
0.75
0.82
0.87
1.00
1.05
1.16
5.00
0.69
0.72
0.80
0.85
0.97
1.02
1.13
5.25
0.68
0.69
0.77
0.82
0.95
0.98
1.09
5.50
0.67
0.69
0.76
0.81
0.93
0.97
1.08
Junction Temperature and Voltage Derating Curves
(normalized to Worst-Case Commercial, T_J = 4.75 V, 70°C)
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
4.50
4.75
5.00
5.25
Voltage (V)
Note: This derating factor applies to all routing and propagation delays.
125°C
85°C
70°C
25°C
0°C
–40°C
–55°C
5.50
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