NASA Office of Logic Design

A scientific study of the problems of digital engineering for space flight systems,
with a view to their practical solution.

Timing Derating Factors

• A1020
• A1020A
• A1280
• RH1020

Act 1 - A1020 (2.0 µm)
"ACT™ 1 Military Field Programmable Gate Arrays (Preliminary)," ACT™ Family Field Programmable Gate Array Databook, April, 1990, p. 1-35

Overall Derating
Note: "Best-case" reflects maximum operating voltage, minimum operating temperature, and best-case processing.  "Worst-case" reflects minimum operating voltage, maximum operating temperature, and worst-case processing.   Best-case derating is based on sample data only and is not guaranteed.

Factor ( x typical)
Best-case	0.40
Worst-case	1.38

Voltage Derating: 14%/V

Factor ( linear)
4.5V	1.07
5.0V	1.00
5.5V	0.93

Temperature Derating: 0.26%/°C
Based on junction temperature

Factor ( linear)
-55 °C	0.78
+25 °C	1.00
+125 °C	1.24

Act 1 - A1020A (1.2 µm)
"ACT™ 1 and Act 2 Military Field Programmable Gate Arrays" ACT™ Family Field Programmable Gate Array Databook, April, 1992, p. 1-141

Overall Derating
Note: "Best-case" reflects maximum operating voltage, minimum operating temperature, and best-case processing.  "Worst-case" reflects minimum operating voltage, maximum operating temperature, and worst-case processing.   Best-case derating is based on sample data only and is not guaranteed.

Factor ( x typical)
STD	Best-case	0.37
	Worst-case	1.79
-1	Best-case	0.37
	Worst-case	1.49

Voltage Derating: 14%/V

Factor ( linear)
4.5V	1.07
5.0V	1.00
5.5V	0.93

Temperature Derating: 0.26%/°C
Based on junction temperature

Factor ( linear)
-55 °C	0.78
+25 °C	1.00
+125 °C	1.24

Act 2 - A1280 (1.2 µm)
"ACT™ 1 and Act 2 Military Field Programmable Gate Arrays" ACT™ Family Field Programmable Gate Array Databook, April, 1992, p. 1-141

Overall Derating
Note: "Best-case" reflects maximum operating voltage, minimum operating temperature, and best-case processing.  "Worst-case" reflects minimum operating voltage, maximum operating temperature, and worst-case processing.   Best-case derating is based on sample data only and is not guaranteed.

Factor ( x typical)
STD	Best-case	0.35
	Worst-case	1.60

Voltage Derating: 14%/V

Factor ( linear)
4.5V	1.07
5.0V	1.00
5.5V	0.93

Temperature Derating: 0.26%/°C
Based on junction temperature

Factor ( linear)
-55 °C	0.78
+25 °C	1.00
+125 °C	1.24

RH1020 (1.0 µm)

Some measured data on RT1020's (w/ RH1020 die inside).

200 buffers

Static Timing Analysis

25 °C, +5V

Min = 395 ns
Typ = 983
Max = 1037

Sample Data

   1.7 to 5.5V

   3.0 to 5.5V

   4.5 to 5.5V

Change (%) of tPD vs. Change in Voltage Note: Double the numbers to get delta tPD/volt
Voltage	tPLH	tPHL
4.5V	9.1	5.8
5.0V
5.5V	6.8	4.3

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Last Revised: November 01, 2003
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