EPF8820ARC208-4N - FLEX 8000 FPGA 8K Gates 672 Cells | Altera
Référence : EPF8820ARC208-4N ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $48.5 | $48,50 |
| 10 | $43.65 | $436,50 |
| 100 | $38.8 | $3 880,00 |
| 250 | $35.2 | $8 800,00 |
| 500 | $32 | $16 000,00 |
EPF8820ARC208-4N Présentation
An FPGA (Field Programmable Gate Array) is a programmable logic device that combines the high integration of a gate array with the field-programmability of a PLD. FPGAs occupy the middle of the programmable logic hierarchy between simple Complex PLDs (CPLDs) and large System-on-Cel (SoC) FPGAs; they are typically used for register-rich, high-gate-count glue logic, custom datapaths, and protocol bridges where low-to-moderate complexity is required but a CPLD does not provide enough logic capacity. The FLEX 8000 family specifically targets low-cost, high-volume designs with in-circuit reconfigurability (ICR) and SRAM-based configuration memory.
Key features of the EPF8820ARC208-4N include a 5 V core voltage (4.75 V to 5.25 V supply range), 5.5 ns pin-to-pin propagation delay, 125 MHz internal performance, fast continuous interconnect with predictable delay, and JTAG-compliant boundary-scan test support. The exposed thermal pad on the 208-RQFP package enables direct heatsinking for industrial temperature operation (-40 °C to +85 °C) and improves reliability in thermally constrained enclosures.
Architecturally, the EPF8820ARC208-4N consists of logic array blocks (LABs) containing 8 logic elements each, organized into rows and columns and interconnected by a continuous FastTrack routing network. Each logic element includes a 4-input look-up table (LUT), a programmable register, and a carry chain for arithmetic operations, enabling efficient implementation of counters, adders, and state machines. Embedded memory blocks and phase-locked loops (PLLs) are not present in this family - designers needing those should migrate to the FLEX 10K or Cyclone families.
Typical applications include industrial control glue logic, peripheral bus bridges (PCI, ISA, VME), telecommunications line-card interfaces, custom register and FIFO interfaces, and legacy system upgrades that require a 5 V tolerant programmable device. The wide I/O count (152 pins) makes it a fit for designs that need to replace multiple 74-series TTL packages.
Designers should note that the EPF8820ARC208-4N is a mature, obsolete-generation part. Long-term designs should plan for last-time-buy or migration to the Cyclone or MAX families, both of which offer pin-compatible footprints in selected packages. Decoupling the five 5 V supply pins with 0.1 µF X7R capacitors placed within 5 mm of each supply pin is essential for switching-noise immunity; the exposed thermal pad must be soldered to a copper pour of at least 1 square inch for industrial-temperature operation.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour EPF8820ARC208-4N — 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 EPF8820ARC208-4N (même facteur de forme et même empreinte) — différant par Package, Process Technology, Configuration Method, Speed Grade, RoHS Status.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
EPF8820ARC208-4
✅ Remplacement direct✓ En stock
$25.4 / unité
Voir la fiche technique →EPF8820ARC208-3N
✅ Remplacement direct✓ En stock
$85 / unité
Voir la fiche technique →EPF8820ARC208-2N
✅ Remplacement direct✓ En stock
$20.55 / unité
Voir la fiche technique →EPF8820AQC208-4
✅ Remplacement direct✓ En stock
$32.8 / unité
Voir la fiche technique →EPF8636ARC208-4
✅ Remplacement direct✓ En stock
$16.5 / unité
Voir la fiche technique →EPF8820ARC208-4N Valeurs maximales et caractéristiques électriques
| Family | FLEX 8000 |
| Usable Gates | 8,000 |
| Logic Elements (Cells) | 672 |
| Maximum Operating Frequency | 125 MHz |
| Propagation Delay | 5.5 ns |
| Number of User I/O | 152 |
| Dedicated Inputs | 4 |
| Core Voltage | 5 V (4.75 V to 5.25 V) |
| I/O Voltage | 3.3 V or 5 V (configurable) |
| Process Technology | 0.42 µm CMOS |
| Boîtier | 208-RQFP / BFQFP with exposed pad |
| Configuration Memory | SRAM (volatile) |
| Operating Temperature (Commercial) | 0 °C to +70 °C |
| Operating Temperature (Industrial) | -40 °C to +85 °C |
| In-Circuit Reconfigurability | Yes (via external configuration device or intelligent controller) |
| Boundary-Scan (JTAG) | Yes (IEEE 1149.1 compliant) |
| Type de montage | Surface Mount |
Configuration des broches de EPF8820ARC208-4N
| Broche 1 | I/O — User I/O pin |
| 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 | GND — Ground |
| 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 | VCC — +5 V core supply |
| 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 | VCC — +5 V 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 | I/O — User I/O pin |
| Broche 54 | GND — Ground |
| 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 | I/O — User I/O pin |
| Broche 65 | VCC — +5 V core supply |
| 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 | I/O — User I/O pin |
| Broche 76 | GND — Ground |
| 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 | I/O — User I/O pin |
| Broche 86 | I/O — User I/O pin |
| Broche 87 | VCC — +5 V core supply |
| 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 | I/O — User I/O pin |
| Broche 97 | I/O — User I/O pin |
| Broche 98 | GND — Ground |
| 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 | I/O — User I/O pin |
| Broche 108 | I/O — User I/O pin |
| Broche 109 | VCC — +5 V core supply |
| 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 | I/O — User I/O pin |
| Broche 118 | I/O — User I/O pin |
| Broche 119 | I/O — User I/O pin |
| Broche 120 | GND — Ground |
| 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 | I/O — User I/O pin |
| Broche 129 | I/O — User I/O pin |
| Broche 130 | I/O — User I/O pin |
| Broche 131 | VCCINT — Internal core voltage (after on-chip regulator) |
| 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 | I/O — User I/O pin |
| Broche 140 | I/O — User I/O pin |
| Broche 141 | I/O — User I/O pin |
| Broche 142 | GND — Ground |
| 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 | I/O — User I/O pin |
| 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 | VCC — +5 V I/O supply |
| 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 | I/O — User I/O pin |
| 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 | GND — Ground |
| 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 | I/O — User I/O pin |
| 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 | VCC — +5 V I/O supply |
| 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 | I/O — User I/O pin |
| 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 | GND — Ground |
| 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 | I/O — User I/O pin |
| 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 | VCC — +5 V I/O supply |
| 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 | I/O — User I/O pin |
| 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 | EXPOSED PAD — Thermal pad (must be soldered to copper pour) |
Applications typiques
EPF8820ARC208-4N convient pour 6 applications: Industrial Control Glue Logic, Peripheral Bus Bridge (PCI / ISA / VME), Telecommunications Line-Card Interface, Custom Register and FIFO Interface, Legacy System Upgrade (TTL Replacement), Test and Measurement Instrument Front-End.
Industrial Control Glue Logic
The EPF8820ARC208-4N fits industrial control glue logic because its 8,000 usable gates and 152 user I/O consolidate dozens of 74-series TTL packages into a single reconfigurable device. The 5 V tolerant I/O (3.3 V or 5 V configurable) directly interfaces with legacy 5 V peripherals, optocouplers, and 24 V industrial sensor interfaces through external level shifters. With a 5.5 ns propagation delay and 125 MHz internal performance, the device can implement deterministic state machines for motor-control sequencing, conveyor logic, and PLC I/O expansion. The exposed thermal pad and industrial temperature grade (-40 °C to +85 °C) ensure reliable operation in factory-floor enclosures. Recommended companion parts: EPF8452ATC100-4N for distributed I/O nodes; the EPF8820ARC208-2N for higher-speed variants.
Recommandé
Peripheral Bus Bridge (PCI / ISA / VME)
The EPF8820ARC208-4N is well suited for legacy peripheral bus bridging between PCI, ISA, and VME buses because its 152 user I/O and 5.5 ns propagation delay meet the 33 MHz PCI timing budget for state machines and address decoding. The device's high register count enables parallel FIFO implementations for DMA handshaking, while the 8,000-gate capacity is sufficient for full bus-master controllers. The 5 V I/O compatibility allows direct interface to legacy ISA and VME buses without external transceivers. The exposed thermal pad supports continuous operation in densely populated backplane designs. Recommended companions: EPF81188ARC240-4 for higher-density VME controllers; EPF81500ARC304-4 for multi-bus gateway designs.
Recommandé
Telecommunications Line-Card Interface
The EPF8820ARC208-4N serves telecom line-card interface designs because its 152 user I/O supports HDLC controllers, T1/E1 framers, and serial backplane interfaces in a single device. The 5.5 ns propagation delay and 125 MHz internal frequency enable 8.192 MHz E1 and 1.544 MHz T1 data stream processing with comfortable timing margins. JTAG boundary-scan (IEEE 1149.1) compliance provides board-level test access for telecom manufacturing tests. In-circuit reconfigurability via external configuration devices supports field upgrades and fault recovery without powering down the line card. Recommended companions: EPF8820ARC208-3N for cost-optimized variants; EPF8636ARC208-4 for simpler line interfaces.
Recommandé
Custom Register and FIFO Interface
The EPF8820ARC208-4N is ideal for custom register and FIFO interface designs because its register-rich architecture (672 cells, predominantly flip-flop based) supports large register banks and parallel FIFOs with minimal logic overhead. The continuous FastTrack interconnect provides predictable routing delays essential for synchronous FIFO flag generation and credit-based flow control. With 8,000 usable gates, designers can implement 32-bit x 1k FIFO plus DMA handshake logic in a single device. The 5 V I/O allows direct connection to legacy bus transceivers without external level translation. Recommended companions: EPF8820ARC208-2N for higher-speed FIFO flag generation; EPF8452AQC160-4 for distributed register sub-nodes.
Recommandé
Legacy System Upgrade (TTL Replacement)
The EPF8820ARC208-4N is a strong fit for legacy system upgrades replacing dozens of 74F/74AS/74LS TTL packages because its 152 user I/O and 5 V I/O tolerance allow direct replacement of wide datapath logic without PCB changes. Designers can implement address latches, bus transceivers, parity generators, interrupt controllers, and custom state machines in a single FPGA, dramatically reducing board area and power consumption. The exposed thermal pad and industrial temperature grade support operation in legacy telecom and industrial chassis. SRAM-based configuration memory requires a serial configuration PROM (EPC1 or EPC2) on the board. Recommended companions: EPC1PC8 configuration PROM; EPF8820ARC208-4 for non-RoHS designs.
Recommandé
Test and Measurement Instrument Front-End
The EPF8820ARC208-4N fits test and measurement instrument front-ends because its 152 user I/O and 5.5 ns propagation delay enable custom timing generators, pattern sequencers, and channel-multiplexer control logic. The device can coordinate analog multiplexer switching, ADC/DAC trigger signals, and front-panel display scanning with deterministic timing. JTAG boundary-scan integration simplifies board-level test fixtures and manufacturing tests. The exposed thermal pad supports continuous operation in instrument chassis with limited airflow. The 5 V I/O is compatible with legacy analog front-end ICs from Analog Devices and Texas Instruments. Recommended companions: EPF81188ARC240-4 for higher-channel-count instruments; EPF8636ARC208-3 for portable instruments.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EPF8820ARC208-4N — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | EPF8820ARC208-4 | EPF8820ARC208-3N | EPF8820ARC208-2N | EPF8820AQC208-4 | EPF8636ARC208-4 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | 208-RQFP (28x28) with exposed pad | 208-RQFP (28x28) with exposed pad | 208-RQFP (28x28) with exposed pad | 208-RQFP (28x28) with exposed pad | 208-PQFP (28x28) | 208-RQFP (28x28) with exposed pad |
| Usable Gates | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 | 6,000 |
| Logic Elements | 672 | 672 | 672 | 672 | 672 | 504 |
| Speed Grade | -4 (5.5 ns) | -4 (5.5 ns) | -3 (~6 ns) | -2 (faster) | -4 (5.5 ns) | -4 (5.5 ns) |
| RoHS Compliance | Yes (Pb-free, -N suffix) | No (leaded) | Yes (Pb-free) | Yes (Pb-free) | No (leaded) | No (leaded) |
| Core Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Lead-free / RoHS-compliant variant in same footprint (vs EPF8820ARC208-4)
- Highest speed grade in the EPF8820ARC208 family (vs EPF8820ARC208-3N)
- Maximum logic capacity in the 208-pin FLEX 8000 family (vs EPF8636ARC208-4)
Notes de conception
The EPF8820ARC208-4N requires five VCC pins (4.75 V to 5.25 V) plus an internal core voltage pin. Per the FLEX 8000 datasheet, decouple each VCC pin with a 0.1 µF X7R ceramic capacitor placed within 5 mm of the pin, plus a single 10 µF tantalum bulk capacitor near the package. Configuration PROMs (EPC1, EPC2) must share this decoupling network to avoid in-rush current glitches that can corrupt configuration.
The exposed thermal pad on the 208-RQFP package MUST be soldered to a copper pour of at least 1 square inch (645 mm²) for industrial-temperature (-40 °C to +85 °C) operation. Estimated: with the -4 speed grade at 125 MHz and full I/O toggling, dynamic current consumption reaches approximately 200 mA, dissipating 1 W. Without proper thermal pad soldering, junction temperature can exceed 100 °C and trigger thermal-induced timing failure. Reference the FLEX 8000 packaging thermal characteristics section for theta-JA values.
Place the EPC1 or EPC2 configuration PROM within 50 mm of the FPGA to keep configuration traces short and avoid reflection-induced configuration failures. Use 4-layer PCB with dedicated ground and power planes; route configuration signals (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0) as 50 Ω microstrip on the top layer over a continuous ground plane. The 208-RQFP pin pitch is 0.5 mm, so use 0.2 mm/8 mil trace/space design rules.
Do not assume the SRAM configuration memory retains bitstream after power-off - it does not. The EPF8820ARC208-4N requires reconfiguration on every power-up via an external EPC1/EPC2 PROM or intelligent controller. For designs requiring non-volatile bitstream retention, consider migrating to a MAX series CPLD or a flash-based FPGA. Also note that the 5 V I/O banks are NOT 5 V tolerant when VCCIO is set to 3.3 V; exceeding VCCIO + 0.5 V damages the I/O cells.
The FLEX 8000 FastTrack interconnect uses continuous routing rows and columns; place high-fanout signals (clock, global enable) on dedicated global routing lines (CLK1, CLK2, OE, CLR) to avoid contention with general routing. Keep high-speed I/O (e.g., 50 MHz clock outputs) on the dedicated clock output pins to leverage the FastTrack low-skew network. Reference the FLEX 8000 handbook chapter on FastTrack routing for detailed placement guidelines.
Informations de conformité
Pb-free / RoHS-compliant per the -N suffix part-number convention. Not AEC-Q100 qualified (commercial/industrial temperature grades only). Halogen-free and conflict-minerals status not stated in the available data.