R
Spartan and Spartan-XL Families Field Programmable Gate Arrays
Spartan Pin-to-Pin Output Parameter Guidelines
Testing of switching parameters is modeled after testing
methods specified by MIL-M-38510/605. All devices are
100% functionally tested. Pin-to-pin timing parameters are
derived from measuring external and internal test patterns
and are guaranteed over worst-case operating conditions
(supply voltage and junction temperature). Listed below are
representative values for typical pin locations and normal
clock loading. For more specific, more precise, and
worst-case guaranteed data, reflecting the actual routing
structure, use the values provided by the static timing ana-
lyzer (TRCE in the Xilinx Development System) and
back-annotated to the simulation netlist. These path delays,
provided as a guideline, have been extracted from the static
timing analyzer report.
Spartan Output Flip-Flop, Clock-to-Out
Speed Grade
-4
-3
Symbol
Description
Device
Max
Max
Units
Global Primary Clock to TTL Output using OFF
T
Fast
XCS05
XCS10
XCS20
XCS30
XCS40
XCS05
XCS10
XCS20
XCS30
XCS40
5.3
5.7
8.7
9.1
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ICKOF
6.1
9.3
6.5
9.4
6.8
10.2
11.5
12.0
12.2
12.8
12.8
T
Slew-rate limited
9.0
ICKO
9.4
9.8
10.2
10.5
Global Secondary Clock to TTL Output using OFF
T
Fast
XCS05
XCS10
XCS20
XCS30
XCS40
XCS05
XCS10
XCS20
XCS30
XCS40
5.8
6.2
9.2
9.6
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ICKSOF
6.6
9.8
7.0
9.9
7.3
10.7
12.0
12.5
12.7
13.2
14.3
T
Slew-rate limited
9.5
ICKSO
9.9
10.3
10.7
11.0
Delay Adder for CMOS Outputs Option
T
Fast
All devices
All devices
0.8
1.5
1.0
2.0
ns
ns
CMOSOF
T
Slew-rate limited
CMOSO
Notes:
1. Listed above are representative values where one global clock input drives one vertical clock line in each accessible column,and
where all accessible IOB and CLB flip-flops are clocked by the global clock net.
2. Output timing is measured at ~50% V threshold with 50 pF external capacitive load. For different loads, see Figure 33.
CC
3. OFF = Output Flip-Flop
DS060 (v1.6) September 19, 2001
www.xilinx.com
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Product Specification
1-800-255-7778
XILINX [ XILINX, INC ]
