XC3S250E Xilinx, Inc., XC3S250E Datasheet - Page 115

• Manufacturer Part Number: XC3S250E
• Description: Spartan-3E FPGA Family
• Manufacturer: Xilinx, Inc.

DC and Switching Characteristics
Table 14: Recommended Operating Conditions for the DFS
Table 15: Switching Characteristics for the DFS
Notes:
1.
2.
12
Notes:
1.
2.
Output Frequency Ranges
CLKOUT_FREQ_FX
Input Frequency Ranges
F
CLKIN
The numbers in this table are based on the operating conditions set forth in
DFS specifications apply when either of the DFS outputs (CLKFX or CLKFX180) is in use.
DFS specifications apply when either of the DFS outputs (CLKFX or CLKFX180) are in use.
If both DFS and DLL outputs are used on the same DCM, follow the more restrictive CLKIN_FREQ_DLL specifications in
Symbol
CLKIN_FREQ_FX
Symbol
(2)
Frequency for the CLKFX and CLKFX180 outputs
Frequency for the CLKIN input
Description
Description
www.xilinx.com
Table 4
and
Min
0.2
Table
Min
5
-5
14.
-5
Max
326
Speed Grade
Max
Speed Grade
326
Advance Product Specification
DS312-3 (v1.0) March 1, 2005
Min
0.2
Min
5
-4
-4
Max
326
Max
Table
280
12.
Units
Units
MHz
MHz
R