XCS05XL Xilinx, XCS05XL Datasheet - Page 59

• Manufacturer Part Number: XCS05XL
• Description: Spartan and Spartan-XL Families Field Programmable Gate Arrays
• Manufacturer: Xilinx

Spartan-XL Pin-to-Pin Input Parameter Guidelines
Testing of switching parameters is modeled after testing
methods specified by MIL-M-38510/605. All devices are
100% functionally tested. Pin-to-pin timing parameters are
derived from measuring external and internal test patterns
Spartan-XL Setup and Hold
Capacitive Load Factor
Figure 35
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 35
of voltage and temperature and is independent of the output
slew rate control.
DS060 (v1.6) September 19, 2001
Product Specification
Notes:
1.
2.
Input Setup/Hold Times Using Global Clock and IFF
T
Symbol
T
IFF = Input Flip-Flop or Latch
Setup time is measured with the fastest route and the lightest load. Hold time is measured using the furthest distance and a
reference load of one clock pin per IOB/CLB.
SUF
SU
/T
/T
HF
H
shows the relationship between I/O output delay
is usable over the specified operating conditions
R
No Delay
Full Delay
Description
Spartan and Spartan-XL Families Field Programmable Gate Arrays
www.xilinx.com
1-800-255-7778
and are guaranteed over worst-case operating conditions
(supply voltage and junction temperature). Listed below are
representative values for typical pin locations and normal
clock loading.
Figure 35: Delay Factor at Various Capacitive Loads
-1
-2
3
2
1
0
XCS05XL
XCS10XL
XCS20XL
XCS30XL
XCS40XL
XCS05XL
XCS10XL
XCS20XL
XCS30XL
XCS40XL
0
Device
20
40
1.1/2.0
1.0/2.2
0.9/2.4
0.8/2.6
0.7/2.8
3.9/0.0
4.1/0.0
4.3/0.0
4.5/0.0
4.7/0.0
Capacitance (pF)
Max
-5
Speed Grade
60
80
1.6/2.6
1.5/2.8
1.4/3.0
1.3/3.2
1.2/3.4
5.1/0.0
5.3/0.0
5.5/0.0
5.7/0.0
5.9/0.0
Max
-4
100
DS060_35_080400
120
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
140
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