XC3S50A-4FTG256C Datasheet, PDF (27/132 Pages) Xilinx, Inc – Architectural and Configuration Overview

DC and Switching Characteristics
Input Propagation Times
Table 22: Propagation Times for the IOB Input Path
Symbol
Description
Conditions
Propagation Times
T_IOPI
The time it takes for data to travel LVCMOS25⁽²⁾
from the Input pin to the I output with
no input delay programmed
T_IOPID
The time it takes for data to travel LVCMOS25⁽²⁾
from the Input pin to the I output with
the input delay programmed
DELAY_VALUE
Device
Speed Grade
-5
-4
Max Max Units
IBUF_DELAY_VALUE=0 XC3S50A 1.04 1.12 ns
XC3S200A 0.87 0.87 ns
XC3S400A 0.65 0.72 ns
XC3S700A 0.92 0.92 ns
XC3S1400A 0.96 1.21 ns
1
XC3S50A 1.79 2.07 ns
2
2.13 2.46 ns
3
2.36 2.71 ns
4
2.88 3.21 ns
5
3.11 3.46 ns
6
3.45 3.84 ns
7
3.75 4.19 ns
8
4.00 4.47 ns
9
3.61 4.11 ns
10
3.95 4.50 ns
11
4.18 4.67 ns
12
4.75 5.20 ns
13
4.98 5.44 ns
14
5.31 5.95 ns
15
5.62 6.28 ns
16
5.86 6.57 ns
1
XC3S200A 1.57 1.65 ns
2
1.87 1.97 ns
3
2.16 2.33 ns
4
2.68 2.96 ns
5
2.87 3.19 ns
6
3.20 3.60 ns
7
3.57 4.02 ns
8
3.79 4.26 ns
9
3.42 3.86 ns
10
3.79 4.25 ns
11
4.02 4.55 ns
12
4.62 5.24 ns
13
4.86 5.53 ns
14
5.18 5.94 ns
DS529-3 (v2.0) August 19, 2010
www.xilinx.com
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