Spartan-II FPGA Family: DC and Switching Characteristics
DS001-3 (v2.8) June 13, 2008
Module 3 of 4
Product Specification
54
R
Switching Characteristics
All devices are 100% functionally tested. Internal timing
parameters are derived from measuring internal test
patterns. Listed below are representative values. For more
specific, more precise, and worst-case guaranteed data,
use the values reported by the static timing analyzer (TRCE
in the Xilinx Development System) and back-annotated to
the simulation netlist. All timing parameters assume
worst-case operating conditions (supply voltage and
junction temperature). Values apply to all Spartan-II devices
unless otherwise noted.
Global Clock Input to Output Delay for LVTTL, with DLL (Pin-to-Pin)(1)
Global Clock Input to Output Delay for LVTTL, without DLL (Pin-to-Pin)(1)
CTT
–0.5
VREF – 0.2
VREF + 0.2
3.6
VREF – 0.4
VREF + 0.4
8
–8
AGP
–0.5
VREF – 0.2
VREF + 0.2
3.6
10% VCCO
90% VCCO
Note (2)
Notes:
1.
VOL and VOH for lower drive currents are sample tested.
2.
Tested according to the relevant specifications.
Input/Output
Standard
VIL
VIH
VOL
VOH
IOL
IOH
V, Min
V, Max
V, Min
V, Max
V, Min
mA
Symbol
Description
Device
Speed Grade
Units
All
-6
-5
Min
Max
TICKOFDLL
Global clock input to output delay
using output flip-flop for LVTTL,
12 mA, fast slew rate, with DLL.
All
2.9
3.3
ns
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 1.4V with 35 pF external capacitive load for LVTTL. The 35 pF load does not apply to the Min values.
3.
DLL output jitter is already included in the timing calculation.
4.
Symbol
Description
Device
Speed Grade
Units
All
-6
-5
Min
Max
TICKOF
Global clock input to output delay
using output flip-flop for LVTTL,
12 mA, fast slew rate, without DLL.
XC2S15
4.5
5.4
ns
XC2S30
4.5
5.4
ns
XC2S50
4.5
5.4
ns
XC2S100
4.6
5.5
ns
XC2S150
4.6
5.5
ns
XC2S200
4.7
5.6
ns
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 1.4V with 35 pF external capacitive load for LVTTL. The 35 pF load does not apply to the Min values.
3.