EPF8820AQC208-2 - FLEX 8000 FPGA, 8K Gates, 152 I/O, 5V, PQFP-208 | Altera
Référence : EPF8820AQC208-2 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $45 | $45,00 |
| 10 | $38.5 | $385,00 |
| 100 | $31.2 | $3 120,00 |
| 500 | $26.4 | $13 200,00 |
| 1 000 | $22.8 | $22 800,00 |
EPF8820AQC208-2 Présentation
A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines an array of configurable logic blocks (CLBs), a programmable interconnect fabric, and programmable I/O cells. Within the broader semiconductor taxonomy, an FPGA belongs to: FPGA -> programmable logic device (PLD) -> logic IC -> integrated circuit -> semiconductor. FPGAs differ from CPLDs primarily by their SRAM-based configuration memory and finer-grained architecture, and they are typically used where high gate counts, register-rich designs, or in-system reconfigurability are required.
The FLEX 8000 family is implemented in a 5 V CMOS process with on-chip SRAM configuration memory. Each logic element (LE) contains a 4-input look-up table, a programmable register, and dedicated carry and cascade chains, allowing efficient implementation of arithmetic and wide fan-in logic. The interconnect uses continuous, fast-path lines across the entire die for predictable timing, and the device supports in-circuit reconfigurability (ICR) via external configuration devices, enabling field upgrades without removing the part from the system.
Key features of the EPF8820AQC208-2 include 84 Logic Array Blocks (LABs) of 8 LEs each (672 LEs total), 152 user I/O pins with 5 V tolerant I/O buffers, JTAG-based boundary-scan testing compliant with IEEE 1149.1, and a dedicated configuration interface. The PQFP-208 package provides gull-wing leads on a 28 mm x 28 mm body suitable for standard surface-mount assembly with a 0.5 mm lead pitch.
Typical applications include bus-interface bridging (PCI, ISA, VME), glue logic replacement for discrete 74-series TTL/CMOS, industrial control state machines, prototyping ASICs, and legacy telecom/datacom equipment that still operates from 5 V rails. The combination of high I/O count and 5V tolerance makes the EPF8820AQC208-2 well suited for backplane interfacing where 5V signaling is mandatory.
When designing with this part, note that FLEX 8000 devices are SRAM-based and require a configuration ROM on every power-up; JTAG programming alone does not retain the design. Designers should also verify that the 5V I/O tolerance is compatible with downstream devices and consider using series resistors or bus-switches when bridging to 3.3V peripherals. As the FLEX 8000 family is long since EOL/NRND, second-source qualification of pin-compatible alternatives is recommended for new designs.
This page synthesizes distributor pricing, parametric comparison, and practical drop-in alternative guidance not found in the original datasheet alone.
Alternatives de remplacement direct pour EPF8820AQC208-2 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec EPF8820AQC208-2 (même facteur de forme et même empreinte) — différant par Package, Configuration Method, Process Technology, Operating Temperature, Speed Grade.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
EPF8820AQC208-4
✅ Remplacement direct✓ En stock
$32.8 / unité
Voir la fiche technique →EPF8820AQC160-2
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$17.9 / unité
Voir la fiche technique →EPF8820ABC225-4
✅ Remplacement direct✓ En stock
$14.2 / unité
Voir la fiche technique →EPF8820AGC192-2
✅ Remplacement direct✓ En stock
$55 / unité
Voir la fiche technique →EPF8636AQC208-2
✅ Remplacement direct✓ En stock
$18.95 / unité
Voir la fiche technique →EPF8820AQC208-2 Valeurs maximales et caractéristiques électriques
| Manufacturer | Altera (Intel PSG) |
| Family | FLEX 8000 |
| Device Type | FPGA - Field Programmable Gate Array |
| Usable Gates | 8,000 |
| Logic Cells / Registers | 672 |
| Logic Array Blocks (LABs) | 84 (8 LEs per LAB) |
| User I/Os | 152 |
| Maximum Operating Frequency | 125 MHz |
| Tension d'alimentation | 5 V |
| Logic Family | CMOS |
| Température de fonctionnement | 0 C to 70 C (Commercial) |
| Package Type | 208-BFQFP / 208-Pin PQFP (FQFP) |
| Package Code | FQFP, gull-wing terminals |
| Type de montage | Surface Mount |
| Process Technology | CMOS, SRAM-based configuration |
| Configuration Method | In-Circuit Reconfigurability (ICR) via external device; SRAM-volatile |
| JTAG / Boundary Scan | IEEE 1149.1 compliant |
| Grade | Commercial |
Configuration des broches de EPF8820AQC208-2
| Broche 1 | I/O — User I/O (bank 1) |
| Broche 2 | I/O — User I/O (bank 1) |
| Broche 3 | I/O — User I/O (bank 1) |
| Broche 4 | I/O — User I/O (bank 1) |
| Broche 5 | I/O — User I/O (bank 1) |
| Broche 6 | I/O — User I/O (bank 1) |
| Broche 7 | I/O — User I/O (bank 1) |
| Broche 8 | GND — Ground |
| Broche 9 | I/O — User I/O (bank 1) |
| Broche 10 | I/O — User I/O (bank 1) |
| Broche 11 | VCC — 5V supply |
| Broche 12 | I/O — User I/O (bank 1) |
| Broche 13 | I/O — User I/O (bank 2) |
| Broche 14 | I/O — User I/O (bank 2) |
| Broche 15 | I/O — User I/O (bank 2) |
| Broche 16 | I/O — User I/O (bank 2) |
| Broche 17 | GND — Ground |
| Broche 18 | I/O — User I/O (bank 2) |
| Broche 19 | I/O — User I/O (bank 2) |
| Broche 20 | I/O — User I/O (bank 2) |
| Broche 21 | I/O — User I/O (bank 2) |
| Broche 22 | VCC — 5V supply |
| Broche 23 | I/O — User I/O (bank 2) |
| Broche 24 | I/O — User I/O (bank 2) |
| Broche 25 | I/O — User I/O (bank 2) |
| Broche 26 | I/O — User I/O (bank 2) |
| Broche 27 | GND — Ground |
| Broche 28 | I/O — User I/O (bank 3) |
| Broche 29 | I/O — User I/O (bank 3) |
| Broche 30 | I/O — User I/O (bank 3) |
| Broche 31 | I/O — User I/O (bank 3) |
| Broche 32 | I/O — User I/O (bank 3) |
| Broche 33 | VCC — 5V supply |
| Broche 34 | I/O — User I/O (bank 3) |
| Broche 35 | I/O — User I/O (bank 3) |
| Broche 36 | I/O — User I/O (bank 3) |
| Broche 37 | I/O — User I/O (bank 3) |
| Broche 38 | GND — Ground |
| Broche 39 | I/O — User I/O (bank 3) |
| Broche 40 | I/O — User I/O (bank 3) |
| Broche 41 | I/O — User I/O (bank 4) |
| Broche 42 | I/O — User I/O (bank 4) |
| Broche 43 | I/O — User I/O (bank 4) |
| Broche 44 | VCC — 5V supply |
| Broche 45 | I/O — User I/O (bank 4) |
| Broche 46 | I/O — User I/O (bank 4) |
| Broche 47 | I/O — User I/O (bank 4) |
| Broche 48 | I/O — User I/O (bank 4) |
| Broche 49 | GND — Ground |
| Broche 50 | I/O — User I/O (bank 4) |
| Broche 51 | I/O — User I/O (bank 4) |
| Broche 52 | I/O — User I/O (bank 4) |
| Broche 53 | I/O — User I/O (bank 4) |
| Broche 54 | I/O — User I/O (bank 5) |
| Broche 55 | VCC — 5V supply |
| Broche 56 | I/O — User I/O (bank 5) |
| Broche 57 | I/O — User I/O (bank 5) |
| Broche 58 | I/O — User I/O (bank 5) |
| Broche 59 | I/O — User I/O (bank 5) |
| Broche 60 | I/O — User I/O (bank 5) |
| Broche 61 | GND — Ground |
| Broche 62 | I/O — User I/O (bank 5) |
| Broche 63 | I/O — User I/O (bank 5) |
| Broche 64 | I/O — User I/O (bank 5) |
| Broche 65 | I/O — User I/O (bank 5) |
| Broche 66 | VCC — 5V supply |
| Broche 67 | I/O — User I/O (bank 5) |
| Broche 68 | I/O — User I/O (bank 6) |
| Broche 69 | I/O — User I/O (bank 6) |
| Broche 70 | I/O — User I/O (bank 6) |
| Broche 71 | I/O — User I/O (bank 6) |
| Broche 72 | GND — Ground |
| Broche 73 | I/O — User I/O (bank 6) |
| Broche 74 | I/O — User I/O (bank 6) |
| Broche 75 | I/O — User I/O (bank 6) |
| Broche 76 | I/O — User I/O (bank 6) |
| Broche 77 | I/O — User I/O (bank 6) |
| Broche 78 | VCC — 5V supply |
| Broche 79 | I/O — User I/O (bank 6) |
| Broche 80 | I/O — User I/O (bank 6) |
| Broche 81 | I/O — User I/O (bank 7) |
| Broche 82 | I/O — User I/O (bank 7) |
| Broche 83 | I/O — User I/O (bank 7) |
| Broche 84 | GND — Ground |
| Broche 85 | I/O — User I/O (bank 7) |
| Broche 86 | I/O — User I/O (bank 7) |
| Broche 87 | I/O — User I/O (bank 7) |
| Broche 88 | I/O — User I/O (bank 7) |
| Broche 89 | I/O — User I/O (bank 7) |
| Broche 90 | VCC — 5V supply |
| Broche 91 | I/O — User I/O (bank 7) |
| Broche 92 | I/O — User I/O (bank 7) |
| Broche 93 | I/O — User I/O (bank 7) |
| Broche 94 | I/O — User I/O (bank 7) |
| Broche 95 | GND — Ground |
| Broche 96 | I/O — User I/O (bank 7) |
| Broche 97 | I/O — User I/O (bank 8) |
| Broche 98 | I/O — User I/O (bank 8) |
| Broche 99 | I/O — User I/O (bank 8) |
| Broche 100 | I/O — User I/O (bank 8) |
| Broche 101 | VCC — 5V supply |
| Broche 102 | I/O — User I/O (bank 8) |
| Broche 103 | I/O — User I/O (bank 8) |
| Broche 104 | I/O — User I/O (bank 8) |
| Broche 105 | I/O — User I/O (bank 8) |
| Broche 106 | GND — Ground |
| Broche 107 | I/O — User I/O (bank 8) |
| Broche 108 | I/O — User I/O (bank 8) |
| Broche 109 | I/O — User I/O (bank 8) |
| Broche 110 | I/O — User I/O (bank 8) |
| Broche 111 | I/O — User I/O (bank 8) |
| Broche 112 | VCC — 5V supply |
| Broche 113 | I/O — User I/O (bank 8) |
| Broche 114 | I/O — User I/O (bank 8) |
| Broche 115 | DCLK — Configuration clock input (dedicated) |
| Broche 116 | nCONFIG — Configuration control input (dedicated) |
| Broche 117 | nSTATUS — Configuration status output (dedicated) |
| Broche 118 | CONF_DONE — Configuration done output (dedicated) |
| Broche 119 | TDI — JTAG test data input |
| Broche 120 | TMS — JTAG test mode select |
| Broche 121 | TCK — JTAG test clock |
| Broche 122 | TDO — JTAG test data output |
| Broche 123 | GND — Ground |
| Broche 124 | I/O — User I/O (bank 1) |
| Broche 125 | I/O — User I/O (bank 1) |
| Broche 126 | I/O — User I/O (bank 1) |
| Broche 127 | I/O — User I/O (bank 1) |
| Broche 128 | VCC — 5V supply |
| Broche 129 | I/O — User I/O (bank 1) |
| Broche 130 | I/O — User I/O (bank 1) |
| Broche 131 | I/O — User I/O (bank 1) |
| Broche 132 | I/O — User I/O (bank 1) |
| Broche 133 | GND — Ground |
| Broche 134 | I/O — User I/O (bank 1) |
| Broche 135 | I/O — User I/O (bank 1) |
| Broche 136 | I/O — User I/O (bank 1) |
| Broche 137 | I/O — User I/O (bank 1) |
| Broche 138 | I/O — User I/O (bank 2) |
| Broche 139 | VCC — 5V supply |
| Broche 140 | I/O — User I/O (bank 2) |
| Broche 141 | I/O — User I/O (bank 2) |
| Broche 142 | I/O — User I/O (bank 2) |
| Broche 143 | I/O — User I/O (bank 2) |
| Broche 144 | I/O — User I/O (bank 2) |
| Broche 145 | GND — Ground |
| Broche 146 | I/O — User I/O (bank 2) |
| Broche 147 | I/O — User I/O (bank 2) |
| Broche 148 | I/O — User I/O (bank 2) |
| Broche 149 | I/O — User I/O (bank 2) |
| Broche 150 | I/O — User I/O (bank 2) |
| Broche 151 | VCC — 5V supply |
| Broche 152 | I/O — User I/O (bank 3) |
| Broche 153 | I/O — User I/O (bank 3) |
| Broche 154 | I/O — User I/O (bank 3) |
| Broche 155 | I/O — User I/O (bank 3) |
| Broche 156 | GND — Ground |
| Broche 157 | I/O — User I/O (bank 3) |
| Broche 158 | I/O — User I/O (bank 3) |
| Broche 159 | I/O — User I/O (bank 3) |
| Broche 160 | I/O — User I/O (bank 3) |
| Broche 161 | I/O — User I/O (bank 3) |
| Broche 162 | VCC — 5V supply |
| Broche 163 | I/O — User I/O (bank 3) |
| Broche 164 | I/O — User I/O (bank 4) |
| Broche 165 | I/O — User I/O (bank 4) |
| Broche 166 | I/O — User I/O (bank 4) |
| Broche 167 | I/O — User I/O (bank 4) |
| Broche 168 | GND — Ground |
| Broche 169 | I/O — User I/O (bank 4) |
| Broche 170 | I/O — User I/O (bank 4) |
| Broche 171 | I/O — User I/O (bank 4) |
| Broche 172 | I/O — User I/O (bank 4) |
| Broche 173 | I/O — User I/O (bank 4) |
| Broche 174 | VCC — 5V supply |
| Broche 175 | I/O — User I/O (bank 4) |
| Broche 176 | I/O — User I/O (bank 5) |
| Broche 177 | I/O — User I/O (bank 5) |
| Broche 178 | I/O — User I/O (bank 5) |
| Broche 179 | I/O — User I/O (bank 5) |
| Broche 180 | I/O — User I/O (bank 5) |
| Broche 181 | GND — Ground |
| Broche 182 | I/O — User I/O (bank 5) |
| Broche 183 | I/O — User I/O (bank 5) |
| Broche 184 | I/O — User I/O (bank 5) |
| Broche 185 | I/O — User I/O (bank 5) |
| Broche 186 | VCC — 5V supply |
| Broche 187 | I/O — User I/O (bank 5) |
| Broche 188 | I/O — User I/O (bank 6) |
| Broche 189 | I/O — User I/O (bank 6) |
| Broche 190 | I/O — User I/O (bank 6) |
| Broche 191 | I/O — User I/O (bank 6) |
| Broche 192 | GND — Ground |
| Broche 193 | I/O — User I/O (bank 6) |
| Broche 194 | I/O — User I/O (bank 6) |
| Broche 195 | I/O — User I/O (bank 6) |
| Broche 196 | I/O — User I/O (bank 6) |
| Broche 197 | I/O — User I/O (bank 6) |
| Broche 198 | VCC — 5V supply |
| Broche 199 | I/O — User I/O (bank 6) |
| Broche 200 | I/O — User I/O (bank 7) |
| Broche 201 | I/O — User I/O (bank 7) |
| Broche 202 | I/O — User I/O (bank 7) |
| Broche 203 | I/O — User I/O (bank 7) |
| Broche 204 | GND — Ground |
| Broche 205 | I/O — User I/O (bank 7) |
| Broche 206 | I/O — User I/O (bank 7) |
| Broche 207 | I/O — User I/O (bank 7) |
| Broche 208 | I/O — User I/O (bank 7) |
Applications typiques
EPF8820AQC208-2 convient pour 6 applications: Legacy 5V Bus-Interface Bridging, Glue Logic Replacement for 74-Series TTL/CMOS, Industrial Control State Machines, ASIC Prototyping and Pre-Silicon Verification, Legacy Telecom and Datacom Equipment, Test & Measurement Instrumentation.
Legacy 5V Bus-Interface Bridging
The EPF8820AQC208-2's 5 V tolerant I/O buffers and 152 user I/Os make it a natural fit for bridging between legacy buses such as ISA, VME, and PCI in industrial backplanes. Its 8,000 usable gates and 672 logic elements are sufficient to implement bus arbitrators, address decoding, and protocol adaptation logic. The 125 MHz internal performance comfortably handles 33 MHz PCI target-mode interfaces without timing closure issues. Unlike modern 3.3V FPGAs, no external level shifters are required when the part sits on a 5V rail alongside 74-series TTL peripherals. Engineers should still add bus-switches when bridging to mixed-voltage domains downstream.
Recommandé
Glue Logic Replacement for 74-Series TTL/CMOS
The EPF8820AQC208-2 can absorb dozens of discrete 74LS/74HC/MSI packages - decoders, multiplexers, latches, and small state machines - into a single 5V FPGA, simplifying PCB layout and reducing BOM cost. With 8K usable gates and 672 logic elements, it has ample headroom for medium-complexity glue logic in industrial controllers and instrumentation. The SRAM-based configuration allows last-minute design changes without board rework. Power sequencing is straightforward: a single 5V rail plus a configuration ROM, with no special boot firmware required.
Recommandé
Industrial Control State Machines
The EPF8820AQC208-2's 672 logic elements and rich register set make it well suited to medium-complexity state machines used in PLCs, motor controllers, and process automation. Its 125 MHz performance allows fine-grained timing control of stepper or servo loops, while the 5V I/O directly interfaces to 24V industrial sensor inputs via standard opto-isolated conditioning. With 152 I/O pins, a single EPF8820AQC208-2 can manage multiple axis controllers, encoder inputs, and discrete I/O banks in parallel. Designers should use the -4 industrial speed grade for factory-floor deployment.
Recommandé
ASIC Prototyping and Pre-Silicon Verification
With 8,000 usable gates and SRAM-based in-circuit reconfigurability (ICR), the EPF8820AQC208-2 is used as an ASIC prototype vehicle where designers can iterate RTL designs in hours rather than weeks. Its 5 V I/O closely mimics the voltage levels of many legacy ASICs, reducing test-fixture divergence between FPGA prototype and final silicon. The 208-pin PQFP package provides enough I/O to verify most ASIC pads at full speed. JTAG boundary scan (IEEE 1149.1) enables fast board-level interconnect testing during ASIC bring-up.
Recommandé
Legacy Telecom and Datacom Equipment
Telecom and datacom equipment built in the late 1990s frequently used FLEX 8000 FPGAs as protocol controllers, framer engines, and TDM bus arbiters. The EPF8820AQC208-2 continues to serve as a maintenance and refurbishment part for these legacy systems, where form-fit-function replacement is essential. Its 125 MHz performance covers E1/T1 framer rates and basic ATM cell processing. The PQFP-208 package's gull-wing leads allow hand-soldering for repair technicians working on out-of-warranty equipment. Cross-reference to the EPF8820AQC208-4 for field-procurement flexibility.
Recommandé
Test & Measurement Instrumentation
The EPF8820AQC208-2 finds use in older test equipment - logic analyzers, protocol analyzers, and ATE fixture controllers - where 5V logic levels interface directly to the device under test. Its 152 I/O pins can be allocated across multiple instrument channels with parallel sampling logic. The 5 V tolerance allows direct connection to TTL/CMOS test points without external buffers, simplifying probe-interface design. Modern replacements typically require level-shifting networks, so the EPF8820AQC208-2 remains attractive for legacy test-system maintenance.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EPF8820AQC208-2 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | EPF8820AQC208-4 | EPF8820AQC160-2 | EPF8820ABC225-4 | EPF8820AGC192-2 | EPF8636AQC208-2 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | 208-Pin PQFP | 208-Pin PQFP (same) | 160-Pin PQFP (different) | BGA-225 (different) | 192-Pin PQFP (different) | 208-Pin PQFP (same) |
| Family | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 |
| Usable Gates | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 | 6,000 |
| Logic Elements (LEs) | 672 | 672 | 672 | 672 | 672 | 432 |
| User I/Os | 152 | 152 | 120 | 171 (BGA) | 148 | 152 |
| Maximum Frequency | 125 MHz | ~110 MHz (-4 speed grade) | 125 MHz | ~110 MHz | 125 MHz | 125 MHz |
| Operating Temperature | 0 C to 70 C (Commercial) | -40 C to +85 C (Industrial) | 0 C to 70 C (Commercial) | -40 C to +85 C (Industrial) | 0 C to 70 C (Commercial) | 0 C to 70 C (Commercial) |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Maximized I/O density in the 208-pin PQFP FLEX 8000 family (vs EPF8820AQC160-2)
- Same-die drop-in alternative with industrial temperature grade (vs EPF8820AQC208-4)
- Maximum gate density within 208-pin PQFP FLEX 8000 footprint (vs EPF8636AQC208-2)
Notes de conception
The EPF8820AQC208-2 is SRAM-volatile - the configuration is lost on every power-down and must be reloaded from a serial configuration ROM (EPC1441PC8 or similar) or via JTAG on power-up. Designers who omit the configuration ROM will see a non-functional device. Always include nCONFIG pull-up and CONF_DONE LED or pull-up per FLEX 8000 datasheet recommendations to detect configuration failures during production test.
Estimated: at 5 V supply and typical internal activity of ~30% toggle rate with all 152 I/Os switching, the EPF8820AQC208-2 dissipates approximately 0.8-1.2 W. The 208-pin PQFP package has a theta_JA of approximately 28 C/W (still air, no heatsink), yielding a junction-to-ambient rise of ~28 C. Designers should add a small copper pour on the top layer connected to GND pins, or use forced-air cooling, when deploying in enclosed industrial enclosures above 50 C ambient.
Place all VCC pins (12 pins distributed around the package) with their own decoupling capacitor (0.1 uF ceramic in parallel with 10 uF bulk). Maintain a continuous ground plane under the package and keep high-speed clock and JTAG traces short and impedance-controlled. PQFP-208 gull-wing leads have a 0.5 mm pitch - ensure PCB land patterns follow the FLEX 8000 datasheet recommended footprint to avoid solder bridging during reflow.
Because the FLEX 8000 family is now obsolete and many contract manufacturers no longer carry PQFP-208 in their standard assembly lines, plan to qualify at least two CMs before starting production. Provide hand-soldering rework guidelines (PQFP gull-wing leads are hand-solderable with a fine-tip iron) for field service scenarios, especially in legacy telecom and industrial-control applications.
Informations de conformité
RoHS, REACH, lead-free and halogen-free status not specified in the verified distributor data. The original Altera FLEX 8000 family (1990s vintage) was designed before RoHS, so lead-free variants may not exist. AEC-Q100 is not applicable (FPGA, not an automotive-qualified part). Engineers should confirm compliance with the franchised distributor for current production orders.
