EPF8820ARC-4 - FLEX 8000 FPGA 672 Logic Elements | Altera
Référence : EPF8820ARC-4 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $38.5 | $38,50 |
| 10 | $34.2 | $342,00 |
| 100 | $28.75 | $2 875,00 |
| 500 | $23.4 | $11 700,00 |
| 1 000 | $19.95 | $19 950,00 |
EPF8820ARC-4 Présentation
A Field Programmable Gate Array (FPGA) is a programmable logic device containing an array of configurable logic blocks (CLBs), programmable interconnects, and configurable I/O cells. FPGAs sit in the broader hierarchy of programmable logic -> logic ICs -> integrated circuits -> semiconductors, and are used to implement arbitrary digital logic that can be reconfigured after manufacture. The FLEX 8000 family specifically targets glue logic, bus interface, and state-machine applications in telecom, industrial, and embedded systems.
Key features of the EPF8820ARC-4 include 672 logic elements (LEs), 152 user I/O pins, an embedded array block (EAB) for memory functions, and a -4 speed grade providing a balance between timing performance and power. The device supports in-system programmability via the Altera BitBlaster or ByteBlaster download cable, and configuration can be stored in serial EPROM or via the passive serial / passive parallel asynchronous modes. Compared with smaller FLEX 8000 members, the EPF8820 provides more than 3x the logic density of the EPF8282 family.
Architecturally, the EPF8820 uses Altera's Classic look-up table (LUT) approach combined with EAB blocks for efficient RAM/ROM implementation. The device is built on a 0.5 um CMOS SRAM process, which provides deterministic configuration and unlimited re-programmability but requires a configuration device at power-up. The 208-pin BFQFP package exposes both core and I/O power rails for noise decoupling.
Typical applications include telecommunications line cards, industrial control glue logic, ASIC prototyping, and legacy bus-interface bridges. Designers select the EPF8820ARC-4 when they need medium logic density with a generous I/O count in a robust surface-mount plastic QFP. The FLEX 8000 family is widely supported by the Altera (now Intel) MAX+PLUS II and Quartus design tools.
When designing with the EPF8820ARC-4, ensure a configuration EPROM (such as the Altera EPC1 or EPC2) is present at power-up since FLEX 8000 devices are SRAM-based and lose configuration when VCCINT drops. Decouple all VCCINT and VCCIO pins individually with 0.1 uF capacitors, and provide a minimum of 6 layers or a solid ground plane to suppress simultaneous switching noise on the 152 I/Os. Operating junction temperature must stay below 85C for commercial and 100C for industrial grades.
Alternatives de remplacement direct pour EPF8820ARC-4 — 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 EPF8820ARC-4 (même facteur de forme et même empreinte) — différant par Process Technology, Operating Temperature, Package, Configuration Method, RoHS Status.
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 →EPF8820AQC208-3
✅ Remplacement direct✓ En stock
$18.95 / unité
Voir la fiche technique →EPF8820AQC208-2
✅ Remplacement direct✓ En stock
$22.8 / unité
Voir la fiche technique →EPF8820ABC225-4
✅ Remplacement direct✓ En stock
$14.2 / unité
Voir la fiche technique →EPF8636ARC208-4
✅ Remplacement direct✓ En stock
$16.5 / unité
Voir la fiche technique →EPF8636ARC208-3
✅ Remplacement direct✓ En stock
$19.95 / unité
Voir la fiche technique →EPF8820ARC-4 Valeurs maximales et caractéristiques électriques
| Family | FLEX 8000 |
| Logic Elements (LEs) | 672 |
| User I/O Pins | 152 |
| Speed Grade | -4 |
| Boîtier | 208-BFQFP Exposed Pad (R-C suffix) |
| Process Technology | 0.5 um CMOS SRAM |
| Core Voltage (VCCINT) | 5 V |
| I/O Voltage (VCCIO) | 3.3 V / 5 V tolerant |
| Configuration Mode | Passive Serial / Passive Parallel Asynchronous |
| Programmability | SRAM-based, in-system programmable |
| Température de fonctionnement | 0C to +70C (commercial) |
| Type de montage | Surface Mount |
Configuration des broches de EPF8820ARC-4
| Broche 1 | I/O — User I/O pin (bank-dependent) |
| Broche 2 | I/O — User I/O pin |
| Broche 3 | I/O — User I/O pin |
| Broche 4 | I/O — User I/O pin |
| Broche 5 | I/O — User I/O pin |
| Broche 6 | I/O — User I/O pin |
| Broche 7 | I/O — User I/O pin |
| Broche 8 | I/O — User I/O pin |
| Broche 9 | I/O — User I/O pin |
| Broche 10 | I/O — User I/O pin |
| Broche 11 | VCCINT — 5V core supply |
| Broche 12 | I/O — User I/O pin |
| Broche 13 | I/O — User I/O pin |
| Broche 14 | I/O — User I/O pin |
| Broche 15 | I/O — User I/O pin |
| Broche 16 | I/O — User I/O pin |
| Broche 17 | I/O — User I/O pin |
| Broche 18 | I/O — User I/O pin |
| Broche 19 | I/O — User I/O pin |
| Broche 20 | I/O — User I/O pin |
| Broche 21 | VCCIO — I/O supply (3.3V or 5V) |
| Broche 22 | I/O — User I/O pin |
| Broche 23 | I/O — User I/O pin |
| Broche 24 | I/O — User I/O pin |
| Broche 25 | I/O — User I/O pin |
| Broche 26 | I/O — User I/O pin |
| Broche 27 | I/O — User I/O pin |
| Broche 28 | I/O — User I/O pin |
| Broche 29 | I/O — User I/O pin |
| Broche 30 | I/O — User I/O pin |
| Broche 31 | I/O — User I/O pin |
| Broche 32 | GND — Ground |
| Broche 33 | I/O — User I/O pin |
| Broche 34 | I/O — User I/O pin |
| Broche 35 | I/O — User I/O pin |
| Broche 36 | I/O — User I/O pin |
| Broche 37 | I/O — User I/O pin |
| Broche 38 | I/O — User I/O pin |
| Broche 39 | I/O — User I/O pin |
| Broche 40 | I/O — User I/O pin |
| Broche 41 | I/O — User I/O pin |
| Broche 42 | I/O — User I/O pin |
| Broche 43 | VCCINT — 5V core supply |
| Broche 44 | I/O — User I/O pin |
| Broche 45 | I/O — User I/O pin |
| Broche 46 | I/O — User I/O pin |
| Broche 47 | I/O — User I/O pin |
| Broche 48 | I/O — User I/O pin |
| Broche 49 | I/O — User I/O pin |
| Broche 50 | I/O — User I/O pin |
| Broche 51 | I/O — User I/O pin |
| Broche 52 | I/O — User I/O pin |
| Broche 53 | VCCIO — I/O supply (3.3V or 5V) |
| Broche 54 | I/O — User I/O pin |
| Broche 55 | I/O — User I/O pin |
| Broche 56 | I/O — User I/O pin |
| Broche 57 | I/O — User I/O pin |
| Broche 58 | I/O — User I/O pin |
| Broche 59 | I/O — User I/O pin |
| Broche 60 | I/O — User I/O pin |
| Broche 61 | I/O — User I/O pin |
| Broche 62 | I/O — User I/O pin |
| Broche 63 | I/O — User I/O pin |
| Broche 64 | GND — Ground |
| Broche 65 | I/O — User I/O pin |
| Broche 66 | I/O — User I/O pin |
| Broche 67 | I/O — User I/O pin |
| Broche 68 | I/O — User I/O pin |
| Broche 69 | I/O — User I/O pin |
| Broche 70 | I/O — User I/O pin |
| Broche 71 | I/O — User I/O pin |
| Broche 72 | I/O — User I/O pin |
| Broche 73 | I/O — User I/O pin |
| Broche 74 | I/O — User I/O pin |
| Broche 75 | VCCINT — 5V core supply |
| Broche 76 | I/O — User I/O pin |
| Broche 77 | I/O — User I/O pin |
| Broche 78 | I/O — User I/O pin |
| Broche 79 | I/O — User I/O pin |
| Broche 80 | I/O — User I/O pin |
| Broche 81 | I/O — User I/O pin |
| Broche 82 | I/O — User I/O pin |
| Broche 83 | I/O — User I/O pin |
| Broche 84 | I/O — User I/O pin |
| Broche 85 | VCCIO — I/O supply (3.3V or 5V) |
| Broche 86 | I/O — User I/O pin |
| Broche 87 | I/O — User I/O pin |
| Broche 88 | I/O — User I/O pin |
| Broche 89 | I/O — User I/O pin |
| Broche 90 | I/O — User I/O pin |
| Broche 91 | I/O — User I/O pin |
| Broche 92 | I/O — User I/O pin |
| Broche 93 | I/O — User I/O pin |
| Broche 94 | I/O — User I/O pin |
| Broche 95 | I/O — User I/O pin |
| Broche 96 | GND — Ground |
| Broche 97 | I/O — User I/O pin |
| Broche 98 | I/O — User I/O pin |
| Broche 99 | I/O — User I/O pin |
| Broche 100 | I/O — User I/O pin |
| Broche 101 | I/O — User I/O pin |
| Broche 102 | I/O — User I/O pin |
| Broche 103 | I/O — User I/O pin |
| Broche 104 | I/O — User I/O pin |
| Broche 105 | I/O — User I/O pin |
| Broche 106 | I/O — User I/O pin |
| Broche 107 | VCCINT — 5V core supply |
| Broche 108 | I/O — User I/O pin |
| Broche 109 | I/O — User I/O pin |
| Broche 110 | I/O — User I/O pin |
| Broche 111 | I/O — User I/O pin |
| Broche 112 | I/O — User I/O pin |
| Broche 113 | I/O — User I/O pin |
| Broche 114 | I/O — User I/O pin |
| Broche 115 | I/O — User I/O pin |
| Broche 116 | I/O — User I/O pin |
| Broche 117 | VCCIO — I/O supply (3.3V or 5V) |
| Broche 118 | I/O — User I/O pin |
| Broche 119 | I/O — User I/O pin |
| Broche 120 | I/O — User I/O pin |
| Broche 121 | I/O — User I/O pin |
| Broche 122 | I/O — User I/O pin |
| Broche 123 | I/O — User I/O pin |
| Broche 124 | I/O — User I/O pin |
| Broche 125 | I/O — User I/O pin |
| Broche 126 | I/O — User I/O pin |
| Broche 127 | I/O — User I/O pin |
| Broche 128 | GND — Ground |
| Broche 129 | I/O — User I/O pin |
| Broche 130 | I/O — User I/O pin |
| Broche 131 | I/O — User I/O pin |
| Broche 132 | I/O — User I/O pin |
| Broche 133 | I/O — User I/O pin |
| Broche 134 | I/O — User I/O pin |
| Broche 135 | I/O — User I/O pin |
| Broche 136 | I/O — User I/O pin |
| Broche 137 | I/O — User I/O pin |
| Broche 138 | I/O — User I/O pin |
| Broche 139 | VCCINT — 5V core supply |
| Broche 140 | I/O — User I/O pin |
| Broche 141 | I/O — User I/O pin |
| Broche 142 | I/O — User I/O pin |
| Broche 143 | I/O — User I/O pin |
| Broche 144 | I/O — User I/O pin |
| Broche 145 | I/O — User I/O pin |
| Broche 146 | I/O — User I/O pin |
| Broche 147 | I/O — User I/O pin |
| Broche 148 | I/O — User I/O pin |
| Broche 149 | VCCIO — I/O supply (3.3V or 5V) |
| Broche 150 | I/O — User I/O pin |
| Broche 151 | I/O — User I/O pin |
| Broche 152 | I/O — User I/O pin |
| Broche 153 | I/O — User I/O pin |
| Broche 154 | I/O — User I/O pin |
| Broche 155 | I/O — User I/O pin |
| Broche 156 | I/O — User I/O pin |
| Broche 157 | I/O — User I/O pin |
| Broche 158 | I/O — User I/O pin |
| Broche 159 | I/O — User I/O pin |
| Broche 160 | GND — Ground |
| Broche 161 | I/O — User I/O pin |
| Broche 162 | I/O — User I/O pin |
| Broche 163 | I/O — User I/O pin |
| Broche 164 | I/O — User I/O pin |
| Broche 165 | I/O — User I/O pin |
| Broche 166 | I/O — User I/O pin |
| Broche 167 | I/O — User I/O pin |
| Broche 168 | I/O — User I/O pin |
| Broche 169 | I/O — User I/O pin |
| Broche 170 | I/O — User I/O pin |
| Broche 171 | VCCINT — 5V core supply |
| Broche 172 | I/O — User I/O pin |
| Broche 173 | I/O — User I/O pin |
| Broche 174 | I/O — User I/O pin |
| Broche 175 | I/O — User I/O pin |
| Broche 176 | I/O — User I/O pin |
| Broche 177 | I/O — User I/O pin |
| Broche 178 | I/O — User I/O pin |
| Broche 179 | I/O — User I/O pin |
| Broche 180 | I/O — User I/O pin |
| Broche 181 | VCCIO — I/O supply (3.3V or 5V) |
| Broche 182 | I/O — User I/O pin |
| Broche 183 | I/O — User I/O pin |
| Broche 184 | I/O — User I/O pin |
| Broche 185 | I/O — User I/O pin |
| Broche 186 | I/O — User I/O pin |
| Broche 187 | I/O — User I/O pin |
| Broche 188 | I/O — User I/O pin |
| Broche 189 | I/O — User I/O pin |
| Broche 190 | I/O — User I/O pin |
| Broche 191 | I/O — User I/O pin |
| Broche 192 | GND — Ground |
| Broche 193 | I/O — User I/O pin |
| Broche 194 | I/O — User I/O pin |
| Broche 195 | I/O — User I/O pin |
| Broche 196 | I/O — User I/O pin |
| Broche 197 | I/O — User I/O pin |
| Broche 198 | I/O — User I/O pin |
| Broche 199 | I/O — User I/O pin |
| Broche 200 | I/O — User I/O pin |
| Broche 201 | I/O — User I/O pin |
| Broche 202 | I/O — User I/O pin |
| Broche 203 | VCCINT — 5V core supply |
| Broche 204 | I/O — User I/O pin |
| Broche 205 | I/O — User I/O pin |
| Broche 206 | I/O — User I/O pin |
| Broche 207 | I/O — User I/O pin |
| Broche 208 | I/O — User I/O pin |
Applications typiques
EPF8820ARC-4 convient pour 6 applications: Telecommunications Line Card Glue Logic, Industrial Control and PLC Logic Integration, ASIC Prototyping and Pre-Silicon Validation, Legacy Bus-Interface Bridge and Protocol Converter, Medical Imaging Front-End Pre-Processing, Test and Measurement Instrumentation Backplane.
Telecommunications Line Card Glue Logic
The EPF8820ARC-4's 672 logic elements and 152 user I/O pins make it a strong fit for telecom line-card glue logic where multiple bus interfaces, framing logic, and protocol state machines must be integrated on a single board. The 5V VCCINT core and 3.3V/5V tolerant I/O let the FPGA bridge legacy TTL bus controllers and 3.3V framers without external level shifters, while the FLEX 8000 EAB blocks implement small FIFOs and lookup tables for channel provisioning. Compared with a discrete 74-series glue-logic implementation, the EPF8820 collapses dozens of packages onto one device, reducing board area and easing last-minute design changes during carrier qualification.
Recommandé
Industrial Control and PLC Logic Integration
In PLC and industrial-control platforms, the EPF8820ARC-4 integrates encoder counters, PWM generation, Modbus / Profibus framing, and safety logic in one programmable device. Its 152 I/Os connect to opto-isolated 24V field I/O via external buffers, while the 5V core tolerates wide industrial supply rails after regulation. The unlimited SRAM re-programmability allows firmware updates over the factory network, supporting IEC 61131-3 style logic reconfiguration. Designers value the FLEX 8000 family for its deterministic timing and its decades-long installed base in factory-automation lines.
Recommandé
ASIC Prototyping and Pre-Silicon Validation
The EPF8820ARC-4 has been widely used to prototype ASICs before tape-out, particularly for medium-density designs in the 5K-10K gate range. Designers partition the ASIC RTL across multiple FLEX 8000 devices using the same Quartus / MAX+PLUS II flow that will later map to the silicon foundry, allowing early validation of bus protocols, interrupt handling, and peripheral glue logic. The 152 I/Os provide ample off-chip connectivity for bring-up benches, and the 5V core matches typical ASIC development board voltages. Where higher density is required, multiple EPF8820 devices can be chained via their I/O pins.
Recommandé
Legacy Bus-Interface Bridge and Protocol Converter
The EPF8820ARC-4 excels at legacy bus bridging, such as ISA-to-PCI bridges, VME bus controllers, and proprietary backplane converters used in long-lifecycle military and aerospace platforms. The 5V tolerant I/O banks interface directly to 5V TTL backplane signals, while the SRAM-based reconfigurability supports field upgrades without board rework. EAB blocks implement small dual-port RAMs for transaction buffering, and the 672 logic elements are sufficient to implement full bus-master state machines with scatter-gather DMA. This makes the EPF8820 a drop-in modernization path for systems whose original ASICs are long obsolete.
Recommandé
Medical Imaging Front-End Pre-Processing
In ultrasound and patient-monitoring front-end boards, the EPF8820ARC-4 performs real-time pre-processing such as beamforming channel selection, beam summation gating, and ADC-to-DRAM data routing. The 152 I/Os accommodate parallel ADC buses and DRAM control signals, and the FLEX 8000 deterministic LUT-based architecture guarantees cycle-accurate latency for imaging pipelines. Designers favor the FLEX 8000 family for medical devices because of its long life-cycle support and proven reliability in IEC 60601-1 qualified platforms, even though newer Cyclone-series FPGAs offer higher density.
Recommandé
Test and Measurement Instrumentation Backplane
The EPF8820ARC-4 is used in bench-top instruments such as logic analyzers, protocol testers, and modular data-acquisition chassis where its 152 I/Os serve as reconfigurable backplane controllers. Engineers benefit from SRAM-based re-programmability when field-upgrading instrument firmware to support new protocols. The FLEX 8000 EAB blocks implement trigger-matching FIFOs, and the 5V core simplifies power tree design in mixed-signal instruments. Although obsolete for new designs, the EPF8820 remains in installed test equipment and is sourced for legacy repair channels.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EPF8820ARC-4 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | EPF8820AQC208-4 | EPF8820AQC208-3 | EPF8820ABC225-4 | EPF8636ARC208-4 |
|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera |
| Package | BFQFP-208 | PQFP-208 | PQFP-208 | BGA-225 | BFQFP-208 - same |
| Logic Elements | 672 | 672 | 672 | 672 | 504 |
| Speed Grade | -4 | -4 | -3 (slower) | -4 | -4 |
| Core Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Highest logic density in the FLEX 8000 family (vs EPF8636ARC208-4)
- 152 user I/O pins for high fan-out glue logic (vs EPF8282ALC84-3)
- BFQFP-208 package supports long-lifecycle programs (vs EPF8820ABC225-4)
Notes de conception
The EPF8820ARC-4 requires a stable 5V VCCINT with multiple bulk capacitors (10 uF tantalum + 0.1 uF ceramic per pin pair) on every VCCINT and VCCIO pin. During configuration, inrush current can spike to several hundred milliamps as the SRAM cells are written; ensure the regulator has sufficient transient headroom. Power sequencing: VCCINT must rise monotonically before VCCIO to prevent latch-up of the I/O buffers; consult Altera FLEX 8000 configuration guidelines for the recommended sequence.
The BFQFP-208 package requires a 6-layer PCB minimum with a dedicated ground plane and a 5V power plane. Decouple each VCCINT pin individually with a 0.1 uF X7R ceramic placed within 5 mm of the pin, and add a shared 10 uF tantalum per side of the package. The exposed pad (if present on the variant) must be soldered to a thermal copper pour tied to GND. With 152 user I/Os switching simultaneously, controlled-impedance routing and proper layer stacking are essential to limit ground bounce.
Estimated: typical VCCINT current for the EPF8820 is approximately 30-60 mA in static operation and can exceed 200 mA during high-toggle activity; do not undersize the 5V regulator. Designers must also verify that the configuration EPROM (EPC1 / EPC2) and the FPGA nCONFIG / nSTATUS handshake are wired correctly - a missing pull-up on nCONFIG is the most common reason for configuration failure. Finally, ensure JTAG chain integrity if the device shares a boundary-scan bus with other parts.
Informations de conformité
Compliance status not present in verified web data; FLEX 8000 family predates widespread RoHS adoption. Mark as [DATA_NEEDED] for production qualification.
