R XC4000E and XC4000X Series Field Programmable Gate Arrays XC4000XL Electrical Specifications Definition of Terms In the following tables, some specifications may be designated as Advance or Preliminary. These terms are defined as follows: Advance: Initial estimates based on simulation and/or extrapolation from other speed grades, devices, or devicefamilies. Values are subject to change. Use as estimates, not for production. Preliminary: Based on preliminary characterization. Further changes are not expected. Unmarked: Specifications not identified as either Advance or Preliminary are to be considered Final. Except for pin-to-pin input and output parameters, the a.c. parameter delay specifications included in this document are derived from measuring internal test patterns. All specifications are representative of worst-case supply voltage and junction temperature conditions. All specifications subject to change without notice. XC4000XL D.C. Characteristics Absolute Maximum Ratings Description Units VCC Supply voltage relative to Ground -0.5 to 4.0 V VIN Input voltage relative to Ground (Note 1) -0.5 to 5.5 V VTS Voltage applied to 3-state output (Note 1) -0.5 to 5.5 V VCCt Longest Supply Voltage Rise Time from 1 V to 3V 50 ms TSTG Storage temperature (ambient) -65 to +150 °C TSOL Maximum soldering temperature (10 s @ 1/16 in. = 1.5 mm) +260 °C Ceramic packages +150 °C Plastic packages +125 °C TJ Junction Temperature Note 1: Maximum DC excursion above Vcc or below Ground must be limited to either 0.5 V or 10 mA, whichever is easier to achieve. During transitions, the device pins may undershoot to -2.0 V or overshoot toVCC +2.0 V, provided this over or undershoot lasts less than 10 ns and with the forcing current being limited to 200 mA. Note: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions is not implied. Exposure to Absolute Maximum Ratings conditions for extended periods of time may affect device reliability. Recommended Operating Conditions Symbol VCC Description Supply voltage relative to Gnd, TJ = 0 °C to +85°C Commercial Supply voltage relative to Gnd, TJ = -40°C to +100°C Industrial Min Max Units 3.0 3.6 V 3.0 3.6 V VIH High-level input voltage 50% of VCC 5.5 V VIL Low-level input voltage 0 30% of VCC V TIN Input signal transition time 250 ns Notes: At junction temperatures above those listed above, all delay parameters increase by 0.35% per °C. Input and output measurement threshold is ~50% of VCC. DS005 (v. 1.8 October 18, 1999 - Product Specification 6-73 6 R XC4000E and XC4000X Series Field Programmable Gate Arrays D.C. Characteristics Over Recommended Operating Conditions Symbol VOH VOL Description Min High-level output voltage @ IOH = -4.0 mA, VCC min (LVTTL) High-level output voltage @ IOH = -500 µA, (LVCMOS) V 90% VCC V Low-level output voltage @ IOL = 12.0 mA, VCC min (LVTTL) (Note 1) VDR Data Retention Supply Voltage (below which configuration data may be lost) ICCO Quiescent FPGA supply current (Note 2) V 10% VCC V V 5 mA +10 µA BGA, SBGA, PQ, HQ, MQ packages 10 pF PGA packages 16 pF -10 CIN 0.4 2.5 Input or output leakage current Input capacitance (sample tested) Units 2.4 Low-level output voltage @ IOL = 1500 µA, (LVCMOS) IL Max IRPU Pad pull-up (when selected) @ Vin = 0 V (sample tested) 0.02 0.25 mA IRPD Pad pull-down (when selected) @ Vin = 3.6 V (sample tested) 0.02 0.15 mA IRLL Horizontal Longline pull-up (when selected) @ logic Low 0.3 2.0 mA Note 1: Note 2: With up to 64 pins simultaneously sinking 12 mA. With no output current loads, no active input or Longline pull-up resistors, all I/O pins Tri-stated and floating. Power-0n Power Supply Requirements Xilinx FPGAs require a minimum rated power supply current capacity to insure proper initialization, and the power supply ramp-up time does affect the current required. A fast ramp-up time requires more current than a slow ramp-up time. The slowest ramp-up time is 50 ms. Current capacity is not specified for a ramp-up time faster than 2ms. The current capacity varies linealy with ramp-up time, e.g., an XC4036XL with a ramp-up time of 25 ms would require a capacity predicted by the point on the straight line drawn from 1A at 120 µs to 500 mA at 50 ms at the 25 ms time mark. This point is approximately 750 mA . Product Description Ramp-up Time Fast (120 µs) Slow (50 ms) XC4005 - 36XL Minimum required current supply 1A 500 mA XC4044- 62XL Minimum required current supply 2A 500 mA Minimum required current supply A1 500 mA XC4085XL1 2 Notes: 1. The XC4085XL fast ramp-up time is 5 ms. Devices are guaranteed to initialize properly with the minimum current listed above. A larger capacity power supply may result in a larger initialization current. This specification applies to Commercial and Industrial grade products only. Ramp-up Time is measured from 0 VDC to 3.6 VDC. Peak current required lasts less than 3 ms, and occurs near the internal power on reset threshold voltage. After initialization and before configuration, ICCmax is less than 10 mA. 6-74 DS005 (v. 1.8 October 18, 1999 - Product Specification R XC4000E and XC4000X Series Field Programmable Gate Arrays XC4000XL A.C. Characteristics Testing of the 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 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. When fewer vertical clock lines are connected, the clock distribution is faster; when multiple clock lines per column are driven from the same global clock, the delay is longer. For more specific, more precise, and worst-case guaranteed data, reflecting the actual routing structure, use the values provided by the static timing analyzer (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. All timing parameters assume worst-case operating conditions (supply voltage and junction temperature. Values apply to all XC4000XL devices and are expressed in nanoseconds unless otherwise noted. Global Low Skew Buffer to Clock K Speed Grade All -3 -2 -1 -09 -08 Max Description Symbol Device Min Max Max Max Max Delay from pad through GLS buffer to any clock input, K TGLS XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL 0.3 0.4 0.5 0.6 0.7 0.9 1.1 1.2 1.3 1.4 1.6 2.1 2.7 3.2 3.6 4.0 4.4 4.8 5.3 5.7 6.3 7.2 1.8 2.3 2.8 3.1 3.5 3.8 4.2 4.6 5.0 5.4 6.2 1.6 2.0 2.4 2.7 3.0 3.3 3.6 4.0 4.5 4.7 5.7 1.5 1.9 2.3 2.6 2.9 3.2 3.5 3.9 4.4 4.6 5.5 DS005 (v. 1.8 October 18, 1999 - Product Specification 2.3 3.1 4.0 Units ns ns ns ns ns ns ns ns ns ns ns 6-75 6 R XC4000E and XC4000X Series Field Programmable Gate Arrays Global Early BUFGEs 1, 2, 5, and 6 to IOB Clock Speed Grade All -3 -2 -1 -09 -08 Max Description Symbol Device Min Max Max Max Max Delay from pad through GE buffer to any IOB clock input. TGE XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL 0.1 0.3 0.3 0.4 0.4 0.3 0.3 0.2 0.3 0.3 0.4 1.6 1.9 2.2 2.4 2.6 2.8 3.1 3.5 4.0 4.9 5.8 1.4 1.8 1.9 2.1 2.2 2.4 2.7 3.0 3.5 4.3 5.1 1.3 1.7 1.7 1.8 2.1 2.1 2.3 2.6 3.0 3.7 4.7 1.2 1.6 1.7 1.7 2.0 2.0 2.2 2.4 3.0 3.4 4.3 All -3 -2 -1 -09 -08 Max 1.5 1.9 3.0 Units ns ns ns ns ns ns ns ns ns ns ns Global Early BUFGEs 3, 4, 7, and 8 to IOB Clock Speed Grade Description Symbol Device Min Max Max Max Max Delay from pad through GE buffer to any IOB clock input. TGE XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL 0.5 0.7 0.7 0.7 0.8 0.9 0.9 1.0 1.1 1.2 1.3 2.8 3.1 3.5 3.8 4.1 4.4 4.7 5.1 5.5 5.9 6.8 2.5 2.8 3.1 3.3 3.6 3.9 4.2 4.5 4.8 5.2 6.0 2.1 2.7 2.8 2.9 3.4 3.4 3.7 4.0 4.3 4.8 5.5 1.7 2.5 2.7 2.8 3.2 3.3 3.6 3.7 4.3 4.5 5.2 6-76 2.4 3.1 4.0 Units ns ns ns ns ns ns ns ns ns ns ns DS005 (v. 1.8 October 18, 1999 - Product Specification R XC4000E and XC4000X Series Field Programmable Gate Arrays XC4000XL CLB Characteristics 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 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 XC4000XL devices and are expressed in nanoseconds unless otherwise noted. CLB Switching Characteristic Guidelines Description Combinatorial Delays F/G inputs to X/Y outputs F/G inputs via H’ to X/Y outputs F/G inputs via transparent latch to Q outputs C inputs via SR/H0 via H to X/Y outputs C inputs via H1 via H to X/Y outputs C inputs via DIN/H2 via H to X/Y outputs C inputs via EC, DIN/H2 to YQ, XQ output (bypass) CLB Fast Carry Logic Operand inputs (F1, F2, G1, G4) to COUT Add/Subtract input (F3) to COUT Initialization inputs (F1, F3) to COUT CIN through function generators to X/Y outputs CIN to COUT, bypass function generators Carry Net Delay, COUT to CIN Sequential Delays Clock K to Flip-Flop outputs Q Clock K to Latch outputs Q Setup Time before Clock K F/G inputs F/G inputs via H C inputs via H0 through H C inputs via H1 through H C inputs via H2 through H C inputs via DIN C inputs via EC C inputs via S/R, going Low (inactive) CIN input via F/G CIN input via F/G and H Hold Time after Clock K F/G inputs F/G inputs via H C inputs via SR/H0 through H C inputs via H1 through H C inputs via DIN/H2 through H C inputs via DIN/H2 C inputs via EC C inputs via SR, going Low (inactive) Clock Clock High time Clock Low time Set/Reset Direct Width (High) Delay from C inputs via S/R, going High to Q Global Set/Reset Minimum GSR Pulse Width Delay from GSR input to any Q Toggle Frequency (MHz) (for export control) Speed Grade Symbol -3 Min -2 Max Min -1 Max Min Max Min -09 Max Min -08 Max TILO TIHO TITO THH0O THH1O THH2O TCBYP 1.6 2.7 2.9 2.5 2.4 2.5 1.5 1.5 2.4 2.6 2.2 2.1 2.2 1.3 1.3 2.2 2.2 2.0 1.9 2.0 1.1 1.2 2.0 2.0 1.8 1.6 1.8 1.0 1.1 1.9 1.8 1.8 1.5 1.8 0.9 TOPCY TASCY TINCY TSUM TBYP TNET 2.7 3.3 2.0 2.8 0.26 0.32 2.3 2.9 1.8 2.6 0.23 0.28 2.0 2.5 1.5 2.4 0.20 0.25 1.6 1.8 1.0 1.7 0.14 0.24 1.6 1.8 0.9 1.5 0.14 0.24 TCKO TCKLO 2.1 2.1 1.9 1.9 1.6 1.6 1.5 1.5 1.4 1.4 TICK TIHCK THH0CK THH1CK THH2CK TDICK TECCK TRCK TCCK TCHCK 1.1 2.2 2.0 1.9 2.0 0.9 1.0 0.6 2.3 3.4 1.0 1.9 1.7 1.6 1.7 0.8 0.9 0.5 2.1 3.0 0.9 1.7 1.6 1.4 1.6 0.7 0.8 0.5 1.9 2.7 0.8 1.6 1.4 1.2 1.4 0.6 0.7 0.4 1.3 2.1 0.8 1.5 1.4 1.1 1.4 0.6 0.7 0.4 1.2 2.0 TCKI TCKIH TCKHH0 TCKHH1 TCKHH2 TCKDI TCKEC TCKR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TCH TCL 3.0 3.0 2.8 2.8 2.5 2.5 2.3 2.3 2.1 2.1 TRPW TRIO 3.0 TMRW TMRQ FTOG (MHz) DS005 (v. 1.8 October 18, 1999 - Product Specification 2.8 2.5 2.3 2.3 3.7 3.2 2.8 2.7 2.6 19.8 17.3 15.0 14.0 14.0 See Table on page 85 for TRRI values per device. 166 179 200 217 238 6-77 6 R XC4000E and XC4000X Series Field Programmable Gate Arrays CLB Single-Port RAM Synchronous (Edge-Triggered) Write Operation 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 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 XC4000XL devices and are expressed in nanoseconds unless otherwise noted. Single Port RAM Speed Grade Size -3 -2 Symbol Min Max Min -1 Max Min -09 -08 Max Min Max Min Max Write Operation Address write cycle time (clock K period) 16x2 TWCS 32x1 TWCTS 9.0 9.0 8.4 8.4 7.7 7.7 7.4 7.4 7.4 7.4 Clock K pulse width (active edge) 16x2 TWPS 32x1 TWPTS 4.5 4.5 4.2 4.2 3.9 3.9 3.7 3.7 3.7 3.7 Address setup time before clock K 16x2 TASS 32x1 TASTS 2.2 2.2 2.0 2.0 1.7 1.7 1.7 1.7 1.6 1.7 Address hold time after clock K 16x2 TAHS 32x1 TAHTS 0 0 0 0 0 0 0 0 0 0 DIN setup time before clock K 16x2 TDSS 32x1 TDSTS 2.0 2.5 1.9 2.3 1.7 2.1 1.7 2.1 1.7 2.1 DIN hold time after clock K 16x2 TDHS 32x1 TDHTS 0 0 0 0 0 0 0 0 0 0 WE setup time before clock K 16x2 TWSS 32x1 TWSTS 2.0 1.8 1.8 1.7 1.6 1.5 1.6 1.5 1.6 1.5 WE hold time after clock K 16x2 TWHS 32x1 TWHTS 0 0 0 0 0 0 0 0 0 0 Data valid after clock K 16x2 TWOS 32x1 TWOTS 6.8 8.1 6.3 7.5 5.8 6.9 5.8 6.7 5.7 6.7 Read Operation Address read cycle time 16x2 TRC 32x1 TRCT Data Valid after address change (no Write Enable) 16x2 TILO 32x1 TIHO Address setup time before clock K 16x2 TICK 32x1 TIHCK 6-78 4.5 6.5 3.1 5.5 1.6 2.7 1.1 2.2 2.6 3.8 1.5 2.4 1.0 1.9 2.6 3.8 1.3 2.2 0.9 1.7 2.6 3.8 1.2 2.0 0.8 1.6 1.1 1.9 0.8 1.5 DS005 (v. 1.8 October 18, 1999 - Product Specification R XC4000E and XC4000X Series Field Programmable Gate Arrays CLB Dual-Port RAM Synchronous (Edge-Triggered) Write Operation 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 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 XC4000XL devices and are expressed in nanoseconds unless otherwise noted. Speed Grade Dual Port RAM Address write cycle time (clock K period) Clock K pulse width (active edge) Address setup time before clock K Address hold time after clock K DIN setup time before clock K DIN hold time after clock K WE setup time before clock K WE hold time after clock K Data valid after clock K -3 -2 --1 -09 -08 Size Symbol Min Max Min Max Min Max Min Max Min Max 16x1 16x1 16x1 16x1 16x1 16x1 16x1 16x1 16x1 TWCDS TWPDS TASDS TAHDS TDSDS TDHDS TWSDS TWHDS TWODS 8.4 4.2 2.0 0 2.3 0 1.7 0 9.0 4.5 2.5 0 2.5 0 1.8 0 7.8 7.7 3.9 1.7 0 2.0 0 1.6 0 7.3 7.4 3.7 1.7 0 2.0 0 1.6 0 7.4 3.7 1.6 0 2.0 0 1.6 0 6.7 6.7 6.6 CLB RAM Synchronous (Edge-Triggered) Write Timing Waveforms 6 TWPS TWPDS WCLK (K) WCLK (K) TWHS TWSS WE TWHDS TDSDS TDHDS TASDS TAHDS WE TDHS TDSS DATA IN DATA IN TASS TAHS ADDRESS ADDRESS TILO DATA OUT TWSDS TWOS OLD TILO TILO TILO TWODS NEW DATA OUT X6461 Single-Port RAM DS005 (v. 1.8 October 18, 1999 - Product Specification OLD NEW X6474 Dual-Port RAM 6-79 R XC4000E and XC4000X Series Field Programmable Gate Arrays XC4000XL 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 analyzer (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. Values are expressed in nanoseconds unless otherwise noted. Output Flip-Flop, Clock to Out Speed Grade Description Global Low Skew Clock to Output using Output Flip Flop For output SLOW option add Symbol TICKOF TSLOW All -3 -2 -1 -09 -08 Device Min Max Max Max Max Max XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL 1.2 1.3 1.4 1.5 1.6 1.8 2.0 2.1 2.2 2.3 2.5 7.1 7.7 8.2 8.6 9.0 9.4 9.8 10.3 10.7 11.3 12.2 6.1 6.6 7.1 7.4 7.8 8.1 8.5 8.9 9.3 9.7 10.5 5.4 5.8 6.2 6.5 6.8 7.1 7.4 7.8 8.3 8.5 9.5 5.1 5.4 5.8 6.1 6.4 6.7 7.0 7.4 7.9 8.1 9.0 All Devices 0.5 3.0 2.5 2.0 1.7 Units ns ns ns ns ns ns ns ns ns ns ns 5.6 6.4 7.3 1.6 ns Notes: Clock-to-out minimum delay is measured with the fastest route and the lightest load, Clock-to-out maximum delay is measured using the farthest distance and a reference load of one clock pin (IK or OK) per IOB as well as driving all accessible CLB flip-flops. For designs with a smaller number of clock loads, the pad-to-IOB clock pin delay as determined by the static timing analyzer (TRCE) can be added to the AC parameter Tokpof and used as a worst-case pin-to-pin clock-to-out delay for clocked outputs for FAST mode configurations. Output timing is measured at ~50% VCC threshold with 50 pF external capacitive load. For different loads, see Figure 1. Capacitive Load Factor Figure 60 is usable over the specified operating conditions of voltage and temperature and is independent of the output slew rate control. 3 Delta Delay (ns) Figure 60 shows the relationship between I/O output delay and load capacitance. It allows a user to adjust the specified output delay if the load capacitance is different than 50 pF. For example, if the actual load capacitance is 120 pF, add 2.5 ns to the specified delay. If the load capacitance is 20 pF, subtract 0.8 ns from the specified output delay. 2 1 0 -1 -2 0 20 40 60 80 100 Capacitance (pF) 120 140 X8257 Figure 60: Delay Factor at Various Capacitive Loads 6-80 DS005 (v. 1.8 October 18, 1999 - Product Specification R XC4000E and XC4000X Series Field Programmable Gate Arrays Output Flip-Flop, Clock to Out, BUFGE #s 1, 2, 5, and 6 Speed Grade Description Symbol Global Early Clock to Output using TICKEOF Output Flip Flop. Values are for BUFGE #s 1, 2, 5, and 6. All -3 -2 -1 -09 -08 Device Min Max Max Max Max Max XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL 1.0 1.2 1.2 1.3 1.3 1.2 1.2 1.1 1.2 1.2 1.3 6.6 6.9 7.2 7.4 7.6 7.8 8.1 8.5 9.0 9.9 10.8 5.7 6.1 6.2 6.4 6.5 6.7 7.0 7.3 7.8 8.6 9.4 5.1 5.5 5.5 5.6 5.9 5.9 6.1 6.4 6.8 7.5 8.5 4.8 5.2 5.3 5.3 5.6 5.6 5.8 6.0 6.6 7.0 7.9 Units ns ns ns ns ns ns ns ns ns ns ns 4.8 5.2 6.3 Notes: Clock-to-out minimum delay is measured with the fastest route and the lightest load, Clock-to-out maximum delay is measured using the farthest distance and a reference load of one clock pin (IK or OK) per IOB as well as driving all accessible CLB flip-flops. For designs with a smaller number of clock loads, the pad-to-IOB clock pin delay as determined by the static timing analyzer (TRCE) can be added to the AC parameter Tokpof and used as a worst-case pin-to-pin clock-to-out delay for clocked outputs for FAST mode configurations. Output timing is measured at ~50% VCC threshold with 50 pF external capacitive load. For different loads, see Figure 1. Output Flip-Flop, Clock to Out, BUFGE #s 3, 4, 7, and 8 Speed Grade Description Symbol Global Early Clock to Output using TICKEOF Output Flip Flop. Values are for BUFGE #s 3, 4, 7, and 8. All -3 -2 -1 -09 -08 Device Min Max Max Max Max Max XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL 1.3 1.5 1.6 1.6 1.7 1.7 1.8 1.9 2.0 2.0 2.2 7.8 8.1 8.5 8.8 9.1 9.4 9.7 10.1 10.5 10.9 11.8 6.8 7.1 7.4 7.6 7.9 8.2 8.5 8.8 9.1 9.5 10.3 5.9 6.5 6.6 6.7 7.2 7.2 7.5 7.8 8.1 8.6 9.3 5.3 6.1 6.3 6.4 6.8 6.9 7.2 7.3 7.9 8.1 8.8 5.7 6.4 7.3 Units ns ns ns ns ns ns ns ns ns ns ns Notes: Clock-to-out minimum delay is measured with the fastest route and the lightest load, Clock-to-out maximum delay is measured using the farthest distance and a reference load of one clock pin (IK or OK) per IOB as well as driving all accessible CLB flip-flops. For designs with a smaller number of clock loads, the pad-to-IOB clock pin delay as determined by the static timing analyzer (TRCE) can be added to the AC parameter Tokpof and used as a worst-case pin-to-pin clock-to-out delay for clocked outputs for FAST mode configurations. Output timing is measured at ~50% VCC threshold with 50 pF external capacitive load. For different loads, see Figure 1. DS005 (v. 1.8 October 18, 1999 - Product Specification 6-81 6 R XC4000E and XC4000X Series Field Programmable Gate Arrays XC4000XL Pin-to-Pin Input 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 analyzer (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. Values are expressed in nanoseconds unless otherwise noted Global Low Skew Clock, Set-Up and Hold Description Input Setup and Hold Times No Delay Global Low Skew Clock and IFF Global Low Skew Clock and FCL Partial Delay Global Low Skew Clock and IFF Global Low Skew Clock and FCL Full Delay Global Low Skew Clock and IFF Speed Grade Symbol Device TPSN/TPHN TPSP/TPHP TPSD/TPHD XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL XC4002XL XC4005XL XC4010XL XC4013XL* XC4020XL XC4028XL XC4036XL* XC4044XL XC4052XL XC4062XL* XC4085XL XC4002XL XC4005XL XC4010XL XC4013XL* XC4020XL XC4028XL XC4036XL* XC4044XL XC4052XL XC4062XL* XC4085XL -3 Min -2 Min -1 Min -09 Min 2.5 / 1.5 1.2 / 2.6 1.2 / 3.0 1.2 / 3.2 1.2 / 3.7 1.2 / 4.4 1.2 / 5.5 1.2 / 5.8 1.2 / 7.1 1.2 / 7.0 1.2 / 9.4 8.4 / 0.0 10. 5 / 0.0 11.1 / 0.0 6.1 / 1.0 11.9 / 1.0 12.3 / 1.0 6.4 / 1.0 13.1 / 1.0 11.9 / 1.0 6.7 / 1.2 12.9 / 1.2 6.8 / 0.0 8.8 / 0.0 9.0 / 0.0 6.4 / 0.0 8.8 / 0.0 9.3 / 0.0 6.6 / 0.0 10.6 / 0.0 11.2 / 0.0 6.8 / 0.0 12.7 / 0.0 2.2 / 1.3 1.1 / 2.2 1.1 / 2.6 1.1 / 2.8 1.1 / 3.2 1.1 / 3.8 1.1 / 4.8 1.1 / 5.0 1.1 / 6.2 1.1 / 6.1 1.1 / 8.2 7.3 / 0.0 9.1 / 0.0 9.7 / 0.0 5.3 / 1.0 10.3 / 1.0 10.7 / 1.0 5.6 / 1.0 11.4 / 1.0 10.3 / 1.0 5.8 / 1.2 11.2 / 1.2 6.0 / 0.0 7.6 / 0.0 7.8 / 0.0 6.0 / 0.0 7.6 / 0.0 8.1 / 0.0 6.2 / 0.0 9.2 / 0.0 9.7 / 0.0 6.4 / 0.0 11.0 / 0.0 1.9 / 1.2 0.9 / 2.0 0.9 / 2.3 0.9 / 2.4 0.9 / 2.8 0.9 / 3.3 0.9 / 4.1 0.9 / 4.4 0.9 / 5.4 0.9 / 5.3 0.9 / 7.1 6.3 / 0.0 7.9 / 0.0 8.4 / 0.0 4.6 / 1.0 9.0 / 1.0 9.3 / 1.0 4.8 / 1.0 9.9 / 1.0 9.0 / 1.0 5.1 / 1.2 9.8 / 1.2 5.2 / 0.0 6.6 / 0.0 6.8 / 0.0 5.6 / 0.0 6.6 / 0.0 7.0 / 0.0 5.8 / 0.0 8.0 / 0.0 8.4 / 0.0 6.0 / 0.0 9.6 / 0.0 1.7 / 1.0 0.8 / 1.7 0.8 / 2.0 0.8 / 2.1 0.8 / 2.4 0.8 / 2.9 0.8 / 3.6 0.8 / 3.8 0.8 / 4.7 0.8 / 4.6 0.8 / 6.2 5.5 / 0.0 6.9 / 0.0 7.3 / 0.0 4.0 / 1.0 7.8 / 1.0 8.1 / 1.0 4.2 / 1.0 8.6 / 1.0 7.8 / 1.0 4.4 / 1.2 8.5 / 1.2 4.5 / 0.0 5.6 / 0.0 5.8 / 0.0 4.8 / 0.0 6.2 / 0.0 6.4 / 0.0 5.3 / 0.0 6.8 / 0.0 7.0 / 0.0 5.5 / 0.0 8.4 / 0.0 -08 Min Units 0.8 / 2.1 0.8 / 3.6 0.8 / 4.6 3.7 / 0.5 4.0/ 0.8 4.2/ 1.0 4.8 / 0.0 5.3 / 0.0 5.5 / 0.0 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns IFF = Input Flip-Flop or Latch * The XC4013XL, XC4036XL, and 4062XL have significantly faster partial and full delay setup times than other devices. Notes: Input setup time is measured with the fastest route and the lightest load. Input hold time is measured using the furthest distance and a reference load of one clock pin per IOB as well as driving all accessible CLB flip-flops. For designs with a smaller number of clock loads, the pad-to-IOB clock pin delay as determined by the static timing analyzer (TRCE) can be used as a worst-case pin-to-pin no-delay input hold specification. 6-82 DS005 (v. 1.8 October 18, 1999 - Product Specification R XC4000E and XC4000X Series Field Programmable Gate Arrays Global Early Clock BUFGEs 1, 2, 5, and 6 Set-up and Hold for IFF and FCL Description Symbol Input Setup and Hold Times No Delay Global Early Clock and IFF TPSEN/TPHEN Global Early Clock and TPFSEN/TPFHEN FCL Partial Delay Global Early Clock and IFF TPSEP/TPHEP Global Early Clock and TPFSEP/TPFHEP FCL Full Delay Global Early Clock and IFF TPSED/TPHED Speed Grade Device XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL XC4002XL XC4005XL XC4010XL XC4013XL* XC4020XL XC4028XL XC4036XL* XC4044XL XC4052XL XC4062XL* XC4085XL XC4002XL XC4005XL XC4010XL XC4013XL* XC4020XL XC4028XL XC4036XL* XC4044XL XC4052XL XC4062XL* XC4085XL -3 Min -2 Min -1 Min -09 Min 2.8 / 1.5 1.2 / 4.1 1.2 / 4.4 1.2 / 4.7 1.2 / 4.6 1.2 / 5.3 1.2 / 6.7 1.2 / 6.5 1.2 / 6.7 1.2 / 8.4 1.2 / 8.7 8.1 / 0.9 9.0 / 0.0 11.9 / 0.0 6.4 / 0.0 10.8 / 0.0 14.0 / 0.0 7.0 / 0.0 14.6 / 0.0 16.4 / 0.0 9.0 / 0.8 16.7 / 0.0 6.7 / 0.0 10.8 / 0.0 10.3 / 0.0 10.0 / 0.0 12.0 / 0.0 12.6 / 0.0 12.2 / 0.0 13.8 / 0.0 14.1 / 0.0 13.1 / 0.0 17.9 / 0.0 2.5 / 1.3 1.1 / 3.6 1.1 / 3.8 1.1 / 4.1 1.1 / 4.0 1.1 / 4.6 1.1 / 5.8 1.1 / 5.7 1.1 / 5.8 1.1 / 7.3 1.1 / 7.5 7.0 / 0.8 8.5 / 0.0 10.4 / 0.0 5.9 / 0.0 10.3 / 0.0 12.2 / 0.0 6.6 / 0.0 12.7 / 0.0 14.3 / 0.0 8.6 / 0.8 14.5 / 0.0 5.8 / 0.0 9.4 / 0.0 9.0 / 0.0 8.7 / 0.0 10.4 / 0.0 11.0 / 0.0 10.6 / 0.0 12.0 / 0.0 12.3 / 0.0 11.4 / 0.0 15.6 / 0.0 2.2 / 1.2 0.9 / 3.1 0.9 / 3.3 0.9 / 3.6 0.9 / 3.5 0.9 / 4.0 0.9 / 5.1 0.9 / 4.9 0.9 / 5.1 0.9 / 6.3 0.9 / 6.6 6.1 / 0.7 8.0 / 0.0 9.0 / 0.0 5.4 / 0.0 9.8 / 0.0 10.6 / 0.0 6.2 / 0.0 11.0 / 0.0 12.4 / 0.0 8.2 / 0.8 12.6 / 0.0 5.1 / 0.0 8.2 / 0.0 7.8 / 0.0 7.6 / 0.0 9.1 / 0.0 9.5 / 0.0 9.2 / 0.0 10.5 / 0.0 10.7 / 0.0 9.9 / 0.0 13.6 / 0.0 1.9 / 1.0 0.8 / 2.7 0.8 / 2.9 0.8 / 3.1 0.8 / 3.0 0.8 / 3.5 0.8 / 4.4 0.8 / 4.3 0.8 / 4.4 0.8 / 5.5 0.8 / 5.7 5.3 / 0.6 7.5 / 0.0 8.0 / 0.0 4.9 / 0.0 9.0 / 0.0 9.8 / 0.0 5.2 / 0.0 10.8 / 0.0 11.4 / 0.0 7.0 / 0.8 11.6 / 0.0 4.4 / 0.0 7.1 / 0.0 6.8 / 0.0 6.6 / 0.0 7.9 / 0.0 8.3 / 0.0 8.0 / 0.0 9.1 / 0.0 9.3 / 0.0 8.6 / 0.0 11.8 / 0.0 -08 Min Units 0.5 / 2.7 0.5 / 3.7 0.5 / 4.7 4.4 / 0.0 4.7 / 0.0 6.3 / 0.5 6.0 / 0.0 7.2 / 0.0 7.8 / 0.0 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns IFF = Input Flip-Flop or Latch, FCL = Fast Capture Latch * The XC4013XL, XC4036XL, and 4062XL have significantly faster partial and full delay setup times than other devices. Notes: Input setup time is measured with the fastest route and the lightest load. Input hold time is measured using the furthest distance and a reference load of one clock pin per IOB as well as driving all accessible CLB flip-flops. For designs with a smaller number of clock loads, the pad-to-IOB clock pin delay as determined by the static timing analyzer (TRCE) can be used as a worst-case pin-to-pin no-delay input hold specification. DS005 (v. 1.8 October 18, 1999 - Product Specification 6-83 6 R XC4000E and XC4000X Series Field Programmable Gate Arrays Global Early Clock BUFGEs 3, 4, 7, and 8 Set-up and Hold for IFF and FCL Description Symbol Input Setup & Hold Times No Delay Global Early Clock and TPSEN/TPHEN IFF TPFSEN/TPFHEN Global Early Clock and FCL Partial Delay Global Early Clock and IFF Global Early Clock and FCL Full Delay Global Early Clock and IFF TPSEP/TPHEP TPFSEP/TPFHEP TPSED/TPHED Speed Grade Device XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL XC4002XL XC4005XL XC4010XL XC4013XL* XC4020XL XC4028XL XC4036XL* XC4044XL XC4052XL XC4062XL* XC4085XL XC4002XL XC4005XL XC4010XL XC4013XL* XC4020XL XC4028XL XC4036XL* XC4044XL XC4052XL XC4062XL* XC4085XL -3 Min -2 Min -1 Min -09 Min 3.0 / 2.0 1.2 / 4.1 1.2 / 4.4 1.2 / 4.7 1.2 / 4.6 1.2 / 5.3 1.2 / 6.7 1.2 / 6.5 1.2 / 6.7 1.2 / 8.4 1.2 / 8.7 7.3 / 1.5 8.4 / 0.0 10.3 / 0.0 5.4 / 0.0 9.8 / 0.0 12.7 / 0.0 6.4 / 0.8 13.8 / 0.0 14.5 / 0.0 8.4 / 1.5 14.5 / 0.0 5.9 / 0.0 10.8 / 0.0 10.3 / 0.0 10.0 / 0.0 12.0 / 0.0 12.6 / 0.0 12.2 / 0.0 13.8 / 0.0 14.1 / 0.0 13.1 / 0.0 17.9 / 0.0 2.6 / 1.7 1.1 / 3.6 1.1 / 3.8 1.1 / 4.1 1.1 / 4.0 1.1 / 4.6 1.1 / 5.8 1.1 / 5.7 1.1 / 5.8 1.1 / 7.3 1.1 / 7.5 6.4 / 1.3 7.9 / 0.0 9.0 / 0.0 4.9 / 0.0 9.3 / 0.0 11.0 / 0.0 5.9 / 0.8 12.0 / 0.0 12.7 / 0.0 7.9 / 1.5 12.7 / 0.0 5.2 / 0.0 9.4 / 0.0 9.0 / 0.0 8.7 / 0.0 10.4 / 0.0 11.0 / 0.0 10.6 / 0.0 12.0 / 0.0 12.3 / 0.0 11.4 / 0.0 15.6 / 0.0 2.3 / 1.5 0.9 / 3.1 0.9 / 3.3 0.9 / 3.6 0.9 / 3.5 0.9 / 4.0 0.9 / 5.1 0.9 / 4.9 0.9 / 5.1 0.9 / 6.3 0.9 / 6.6 5.5 / 1.2 7.4 / 0.0 7.8 / 0.0 4.4 / 0.0 8.8 / 0.0 9.6 / 0.0 5.4 / 0.8 10.4 / 0.0 11.0 / 0.0 7.4 / 1.5 11.0 / 0.0 4.5 / 0.0 8.2 / 0.0 7.8 / 0.0 7.6 / 0.0 9.1 / 0.0 9.5 / 0.0 9.2 / 0.0 10.5 / 0.0 10.7 / 0.0 9.9 / 0.0 13.6 / 0.0 2.0 / 1.3 0.8 / 2.7 0.8 / 2.9 0.8 / 3.1 0.8 / 3.0 0.8 / 3.5 0.8 / 4.4 0.8 / 4.3 0.8 / 4.4 0.8 / 5.5 0.8 / 5.7 4.8 / 1.0 7.2 / 0.0 7.4 / 0.0 4.3 / 0.0 8.5 / 0.0 9.3 / 0.0 5.0 / 0.8 10.2 / 0.0 10.7 / 0.0 6.8 / 1.5 10.8 / 0.0 3.9 / 0.0 7.1 / 0.0 6.8 / 0.0 6.6 / 0.0 7.9 / 0.0 8.3 / 0.0 8.0 / 0.0 9.1 / 0.0 9.3 / 0.0 8.6 / 0.0 11.8 / 0.0 -08 Min Units 0.5 / 2.7 0.5 / 3.7 0.5 / 4.7 4.0 / 0.0 4.6 / 0.2 6.2 / 0.0 6.0 / 0.0 7.2 / 0.0 7.8 / 0.0 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns * The XC4013XL, XC4036XL, and 4062XL have significantly faster partial and full delay setup times than other devices. IFF = Input Flip Flop or Latch. FCL = Fast Capture Latch Notes: Input setup time is measured with the fastest route and the lightest load. Input hold time is measured using the furthest distance and a reference load of one clock pin per IOB as well as driving all accessible CLB flip-flops. For designs with a smaller number of clock loads, the pad-to-IOB clock pin delay as determined by the static timing analyzer (TRCE) can be used as a worst-case pin-to-pin no-delay input hold specification. 6-84 DS005 (v. 1.8 October 18, 1999 - Product Specification R XC4000E and XC4000X Series Field Programmable Gate Arrays XC4000XL IOB Input 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 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. All timing parameters assume worst-case operating conditions (supply voltage and junction temperature). Description Clocks Clock Enable (EC) to Clock (IK) Delay from FCL enable (OK) active edge to IFF clock (IK) active edge Setup Times Pad to Clock (IK), no delay -3 Min -2 Min -1 Min -09 Min -08 Min All devices XC4002XL XC4013, 36, 62XL Balance of Family 0.1 3.0 2.2 2.2 0.1 2.7 1.9 1.9 0.1 2.3 1.6 1.6 0.1 2.3 1.6 1.6 0.1 XC4002XL XC4013, 36, 62XL Balance of Family XC4002XL XC4013, 36, 62XL Balance of Family XC4013, 36, 62XL Balance of Family 2.6 1.7 1.7 3.2 2.3 2.3 1.2 1.2 2.3 1.5 1.5 2.9 2.0 2.0 1.0 1.0 2.0 1.3 1.3 2.5 1.8 1.8 0.9 0.9 2.0 1.3 1.3 2.4 1.7 1.7 0.9 0.9 All Devices 0 0 0 0 0 TMRW All devices XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL 17.3 Max 8.5 9.8 12.1 13.8 16.1 17.9 19.6 21.9 23.6 25.3 29.9 15.0 Max 7.4 8.5 10.5 12.0 14.0 15.5 17.0 19.0 20.5 22.0 26.0 14.0 Max 7.0 8.1 10.0 11.4 13.3 14.3 16.2 18.1 19.5 20.9 24.7 14.0 Max TRRI* 19.8 Max 9.8 11.3 13.9 15.9 18.6 20.5 22.5 25.1 27.2 29.1 34.4 All devices XC4002XL XC4013, 36, 62XL Balance of Family X4002XL XC4013, 36, 62XL Balance of Family All devices All devices XC4002XL XC4013, 36, 62XL Balance of Family 1.6 4.7 3.1 3.1 5.4 3.7 3.7 1.7 1.8 5.2 3.6 3.6 1.4 4.2 2.7 2.7 4.7 3.3 3.3 1.5 1.6 4.6 3.1 3.1 1.2 3.6 2.4 2.4 4.1 2.8 2.8 1.3 1.4 4.0 2.7 2.7 1.1 3.5 2.2 2.2 3.9 2.7 2.7 1.2 1.3 3.8 2.6 2.6 TECIK TOKIK TPICK Pad to Clock (IK), via transparent Fast Capture Latch, no delay TPICKF Pad to Fast Capture Latch Enable (OK), no delay Hold Times All Hold Times Global Set/Reset Minimum GSR Pulse Width Global Set/Reset Delay from GSR input to any Q TPOCK Propagation Delays Pad to I1, I2 Pad to I1, I2 via transparent input latch, no delay Speed Grade Device Symbol TPID TPLI Pad to I1, I2 via transparent FCL and input latch, no delay TPFLI Clock (IK) to I1, I2 (flip-flop) Clock (IK) to I1, I2 (latch enable, active Low) FCL Enable (OK) active edge to I1, I2 (via transparent standard input latch) TIKRI TIKLI TOKLI 1.6 1.2 1.6 0.9 10.9 16.2 20.4 1.0 2.1 2.5 1.2 1.3 2.5 Units ns ns ns ns ns ns ns ns ns ns ns ns 6 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns IFF = Input Flip-Flop or Latch, FCL = Fast Capture Latch * Indicates Minimum Amount of Time to Assure Valid Data. DS005 (v. 1.8 October 18, 1999 - Product Specification 6-85 R XC4000E and XC4000X Series Field Programmable Gate Arrays XC4000XL 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 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. All timing parameters assume worst-case operating conditions (supply voltage and junction temperature). For Propagation Delays, slew-rate = fast unless otherwise noted. Values are expressed in nanoseconds unless otherwise noted. -3 Description Symbol Min TCH TCL 3.0 3.0 -2 Max Min -1 Max Min -09 Max Min -08 Max Min Max Clocks Clock High Clock Low 2.8 2.8 2.5 2.5 2.3 2.3 2.1 2.1 Propagation Delays Clock (OK) to Pad Output (O) to Pad 3-state to Pad hi-Z (slew-rate independent) 3-state to Pad active and valid Output (O) to Pad via Fast Output MUX Select (OK) to Pad via Fast MUX TOKPOF TOPF TTSHZ TTSONF TOFPF TOKFPF 5.0 4.1 4.0 4.4 5.5 5.1 4.3 3.6 3.5 3.8 4.8 4.5 3.8 3.1 3.0 3.3 4.2 3.9 3.5 3.0 2.9 3.3 4.0 3.7 3.3 2.8 2.9 3.3 3.7 3.4 Setup and Hold Times Output (O) to clock (OK) setup time Output (O) to clock (OK) hold time Clock Enable (EC) to clock (OK) setup time Clock Enable (EC) to clock (OK) hold time TOOK TOKO TECOK TOKEC 0.5 0.0 0.0 0.3 0.4 0.0 0.0 0.2 0.3 0.0 0.0 0.1 0.3 0.0 0.0 0.0 0.3 0.0 0.0 0.0 TMRW TRPO* 19.8 17.3 15.0 14.0 14.0 Global Set/Reset Minimum GSR pulse width Delay from GSR input to any Pad XC4002XL XC4005XL XC4010XL XC4013XL XC4020XL XC4028XL XC4036XL XC4044XL XC4052XL XC4062XL XC4085XL 14.3 15.9 18.5 20.5 23.2 25.1 27.1 29.7 31.7 33.7 39.0 12.5 13.8 16.1 17.8 20.1 21.9 23.6 25.9 27.6 29.3 33.9 10.9 12.0 14.0 15.5 17.5 19.0 20.5 22.5 24.0 25.5 29.5 10.3 11.4 13.3 14.7 16.6 17.6 19.4 21.4 22.8 24.2 28.0 3.0 2.5 2.0 1.7 14.0 19.3 23.5 Slew Rate Adjustment For output SLOW option add TSLOW 1.6 Note: Output timing is measured at ~50% VCC threshold, with 50 pF external capacitive loads. * Indicates Minimum Amount of Time to Assure Valid Data. 6-86 DS005 (v. 1.8 October 18, 1999 - Product Specification R XC4000E and XC4000X Series Field Programmable Gate Arrays Revision Control Version Nature of Changes 2/1/99 (1.5) Release included in the 1999 data book, section 6 5/14/99 (1.6) Replaced Electrical Specification and pinout pages for E, EX, and XL families with separate updates and added URL link on placeholder page for electrical specifications/pinouts for WebLINX users 9/30/99 (1.7) Added Power-on specification. 10/18/99 (1.8) Corrected posted file to include missing page (IOB Output Parameters). 6 DS005 (v. 1.8 October 18, 1999 - Product Specification 6-87 R XC4000E and XC4000X Series Field Programmable Gate Arrays 6-88 DS005 (v. 1.8 October 18, 1999 - Product Specification