R
QPRO XQ4000XL Series QML High-Reliability FPGAs
XQ4000XL IOB Output Switching Characteristic Guidelines
Testing of switching parameters is modeled after testing
methods specified by MIL-M-38510/605. 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 Develop-
ment System) and back-annotated to the simulation netlist.
These path delays, provided as a guideline, have been
extracted from the static timing analyzer report. All timing
parameters assume worst-case operating conditions (sup-
ply voltage and junction temperature). For Propagation
Delays, slew-rate = fast unless otherwise noted. Values are
expressed in nanoseconds unless otherwise noted.
-3
-1
Symbol
Clocks
Description
Min
Max
Min
Max
Units
T
Clock High
Clock Low
3.0
3.0
-
-
2.5
2.5
-
-
ns
ns
CH
T
CL
Propagation Delays
T
Clock (OK) to pad
Output (O) to pad
-
-
-
-
-
-
5.0
4.1
4.4
4.1
5.5
5.1
-
-
-
-
-
-
3.8
3.1
3.0
3.3
4.2
3.9
ns
ns
ns
ns
ns
ns
OKPOF
T
OPF
T
High-Z to pad High-Z (slew-rate independent)
High-Z to pad active and valid
TSHZ
T
TSONF
T
Output (O) to pad via fast output MUX
Select (OK) to pad via fast MUX
OFPF
T
OKFPF
Setup and Hold Times
T
Output (O) to clock (OK) setup time
Output (O) to clock (OK) hold time
0.5
0
-
-
-
-
0.3
0
-
-
-
-
ns
ns
ns
ns
OOK
T
OKO
T
T
Clock Enable (EC) to clock (OK) setup time
Clock Enable (EC) to clock (OK) hold time
0
0
ECOK
OKEC
0.3
0.1
Global Set/Reset
T
Minimum GSR pulse width
Delay from GSR input to any pad
XQ4013XL
19.8
-
15.0
-
ns
MRW
(2)
T
RPO
-
-
-
-
20.5
27.1
33.7
-
-
-
-
-
ns
ns
ns
ns
XQ4036XL
-
-
XQ4062XL
XQ4085XL
29.5
Slew Rate Adjustment
For output SLOW option add
T
-
3.0
-
2.0
ns
SLOW
Notes:
1. Output timing is measured at ~50% V threshold, with 50 pF external capacitive loads.
CC
2. Indicates Minimum Amount of Time to Assure Valid Data.
DS029 (v1.3) June 25, 2000
www.xilinx.com
17
Product Specification
1-800-255-7778
XILINX [ XILINX, INC ]
