XC3S400-4FT256C Xilinx Inc, XC3S400-4FT256C Datasheet - Page 82

• Manufacturer Part Number: XC3S400-4FT256C
• Description: SEMI CONDUCTOR
• Manufacturer: Xilinx Inc

Specifications of XC3S400-4FT256C

• Case: BGA
• Dc: 04+

Spartan-3 FPGA Family: DC and Switching Characteristics
Internal Logic Timing
Table 50: CLB Timing
82
Notes:
1.
2.
Clock-to-Output Times
T
Setup Times
T
T
Hold Times
T
T
Clock Timing
T
T
F
Propagation Times
T
Set/Reset Pulse Width
T
AS
AH
CKO
DICK
CKDI
CH
CL
TOG
ILO
RPW_CLB
The numbers in this table are based on the operating conditions set forth in
The timing shown is for SLICEM.
Symbol
When reading from the FFX (FFY) Flip-Flop,
the time from the active transition at the CLK
input to data appearing at the XQ (YQ) output
Time from the setup of data at the F or G input
to the active transition at the CLK input of the
CLB
Time from the setup of data at the BX or BY
input to the active transition at the CLK input of
the CLB
Time from the active transition at the CLK input
to the point where data is last held at the F or
G input
Time from the active transition at the CLK input
to the point where data is last held at the BX or
BY input
CLB CLK signal High pulse width
CLB CLK signal Low pulse width
Maximum toggle frequency (for export control)
The time it takes for data to travel from the
CLB’s F (G) input to the X (Y) output
The minimum allowable pulse width, High or
Low, to the CLB’s SR input
Description
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0.24
0.46
0.18
0.25
0.69
0.69
0.21
0.76
Min
0
Table
-
-5
31.
Max
0.63
0.53
725
Speed Grade
∞
∞
-
-
-
-
-
0.24
0.53
0.21
0.29
0.79
0.79
0.21
0.87
Min
0
-
DS099-3 (v2.2) May 25, 2007
-4
Product Specification
Max
0.72
0.61
630
∞
∞
-
-
-
-
-
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
R