XC3S50A Xilinx Corp., XC3S50A Datasheet - Page 32

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

DC and Switching Characteristics
Table 25:
32
Notes:
1.
2.
Differential Standards
LVDS_25
LVDS_33
BLVDS_25
MINI_LVDS_25
MINI_LVDS_33
LVPECL_25
LVPECL_33
RSDS_25
RSDS_33
TMDS_33
PPDS_25
PPDS_33
DIFF_HSTL_I_18
DIFF_HSTL_II_18
DIFF_HSTL_III_18
DIFF_HSTL_I
DIFF_HSTL_III
DIFF_SSTL18_I
DIFF_SSTL18_II
DIFF_SSTL2_I
DIFF_SSTL2_II
DIFF_SSTL3_I
DIFF_SSTL3_II
LVCMOS25 with 12mA Drive and
Signal Standard (IOSTANDARD)
Fast Slew Rate to the Following
Convert Output Time from
The numbers in this table are tested using the methodology
presented in
set forth in
These adjustments are used to convert output- and
three-state-path times originally specified for the LVCMOS25
standard with 12 mA drive and Fast slew rate to times that
correspond to other signal standards. Do not adjust times that
measure when outputs go into a high-impedance state.
Output Timing Adjustments for IOB
Table
Table 26
8,
Table
and are based on the operating conditions
11, and
Table
Speed Grade
1.16
0.46
0.11
0.75
0.40
1.42
0.58
0.46
1.07
0.63
0.43
0.41
0.36
1.01
0.54
0.49
0.41
0.82
0.09
1.16
0.28
Adjustment
-5
Add the
13.
Below
Input Only
1.16
0.46
0.11
0.75
0.40
1.42
0.58
0.46
1.07
0.63
0.43
0.41
0.36
1.01
0.54
0.49
0.41
0.82
0.09
1.16
0.28
-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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DS529-3 (v1.5) July 10, 2007
Product Specification
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