參數(shù)資料
型號: XCS20-4TQ144C
廠商: XILINX INC
元件分類: FPGA
英文描述: Spartan and Spartan-XL Families Field Programmable Gate Arrays
中文描述: FPGA, 400 CLBS, 7000 GATES, 166 MHz, PQFP144
封裝: PLASTIC, TQFP-144
文件頁數(shù): 43/83頁
文件大小: 770K
代理商: XCS20-4TQ144C
Spartan and Spartan-XL FPGA Families Data Sheet
48
DS060 (v1.8) June 26, 2008
Product Specification
R
Capacitive Load Factor
Figure 33 shows the relationship between I/O output delay
and load capacitance. It allows a user to adjust the specified
output delay if the load capacitance is different than 50 pF.
For example, if the actual load capacitance is 120 pF, add
2.5 ns to the specified delay. If the load capacitance is 20
pF, subtract 0.8 ns from the specified output delay.
Figure 33 is usable over the specified operating conditions
of voltage and temperature and is independent of the output
slew rate control.
Figure 34: Delay Factor at Various Capacitive Loads
DS060_35_080400
-2
0
20
406080
Capacitance (pF)
Delta
Dela
y
(ns)
100
120
140
-1
0
1
2
3
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