XC3S50A Xilinx Corp., XC3S50A Datasheet - Page 30

• Manufacturer Part Number: XC3S50A
• Description: Spartan-3a Fpga Family Data Sheet
• Manufacturer: Xilinx Corp.

DC and Switching Characteristics
Output Timing Adjustments
Table 25:
30
Single-Ended Standards
LVTTL
LVCMOS25 with 12mA Drive and
Signal Standard (IOSTANDARD)
Fast Slew Rate to the Following
Convert Output Time from
Output Timing Adjustments for IOB
QuietIO
Slow
Fast
12 mA
16 mA
24 mA
12 mA
16 mA
24 mA
12 mA
16 mA
24 mA
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
6 mA
8 mA
27.67
27.67
27.67
16.71
16.67
16.22
12.11
Speed Grade
5.58
3.16
3.17
2.09
1.62
1.24
2.74
3.03
1.71
1.71
0.53
0.53
0.59
0.60
Adjustment
-5
Add the
Below
27.67
27.67
27.67
16.71
16.67
16.22
12.11
5.58
3.16
3.17
2.09
1.62
1.24
2.74
3.03
1.71
1.71
0.53
0.53
0.59
0.60
-4
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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Table 25:
LVCMOS33
LVCMOS25 with 12mA Drive and
Signal Standard (IOSTANDARD)
Fast Slew Rate to the Following
Convert Output Time from
Output Timing Adjustments for IOB
QuietIO
Slow
Fast
12 mA
16 mA
24 mA
12 mA
16 mA
24 mA
12 mA
16 mA
24 mA
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
6 mA
8 mA
DS529-3 (v1.5) July 10, 2007
27.67
27.67
27.67
16.71
16.29
16.18
12.11
Speed Grade
5.58
3.17
3.17
2.09
1.24
1.15
2.55
3.02
1.71
1.72
0.53
0.59
0.59
0.51
Adjustment
-5
Add the
Product Specification
Below
27.67
27.67
27.67
16.71
16.29
16.18
12.11
5.58
3.17
3.17
2.09
1.24
1.15
2.55
3.02
1.71
1.72
0.53
0.59
0.59
0.51
-4
(Continued)
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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