Altera

EPF8820ARC-4 - FLEX 8000 FPGA 672 Logic Elements | Altera

部品番号: EPF8820ARC-4 ✗ 生産終了

在庫あり 1〜3営業日以内に発送

5 V Vdss 208-BFQFP Exposed Pad (R-C suffix) Package -4 Speed

開始価格 $19.95 USD / 個

MOQ: 1 |

価格更新日: 2026-09-11

ボリューム価格

数量	単価	小計
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

ℹ️ すべての価格はUSDです

データシートを見る (PDF) 代替品を見る

数量

EPF8820ARC-4 概要

The Intel / Altera EPF8820ARC-4 is a member of the FLEX 8000 family of SRAM-based Field Programmable Gate Arrays (FPGAs) with 672 logic elements (LEs), 152 user I/O pins, and a -4 speed grade. According to the Altera FLEX 8000 datasheet, the EPF8820ARC-4 is supplied in a 208-pin BFQFP (R-C suffix) package and operates from a 5V VCCINT with 3.3V or 5V tolerant I/O, making it compatible with mixed-voltage legacy and 3.3V ASIC interfaces.

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.

ドロップイン代替品: EPF8820ARC-4 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。

このシリーズのバリエーション

同一シリーズでドロップイン互換のモデル: EPF8820ARC-4 （同一形状・フットプリント） — 相違点: Process Technology, Operating Temperature, Package, Configuration Method, RoHS Status.

EPF8636ARC208-3

Altera

Operating Temperature: 0 C to +70 C (commercial)

Package: 208-RQFP (28x28 mm) with exposed pad

Configuration Method: SRAM, loaded via serial EPROM or download cable

比較対象 EPF8820ARC-4 →

EPF8636ARC208-4

Altera

Process Technology: 5 V CMOS, 0.42 um

Operating Temperature: -40 C to +105 C

Package: 208-RQFP (28x28 mm) with exposed pad

比較対象 EPF8820ARC-4 →

EPF8820ABC225-4

Intel

Process Technology: 0.42 µm CMOS

Operating Temperature: 0 °C to +70 °C (commercial)

Package: 225-ball BGA (BC225), 19 x 19 mm

比較対象 EPF8820ARC-4 →

EPF8820AQC208-2

Altera

Process Technology: CMOS, SRAM-based configuration

Operating Temperature: 0 C to 70 C (Commercial)

Configuration Method: In-Circuit Reconfigurability (ICR) via external device; SRAM-volatile

比較対象 EPF8820ARC-4 →

EPF8820AQC208-3

Altera

Process Technology: CMOS SRAM

Operating Temperature: 0 C to 70 C (Commercial)

Package: 208-pin PQFP (Plastic Quad Flat Pack), 28 x 28 mm

比較対象 EPF8820ARC-4 →

EPF8820AQC208-4

Intel

Process Technology: 0.42 µm CMOS

Operating Temperature: 0 °C to 70 °C (Commercial)

RoHS Status: Compliant (lead-free -4 suffix per datasheet ordering info)

比較対象 EPF8820ARC-4 →

EPF8820ARC-4N

Intel

Process Technology: 0.42 µm CMOS SRAM

Package: 208-pin RQFP (Plastic Quad Flat Pack with exposed pad)

Configuration Method: SRAM, loaded at power-up

比較対象 EPF8820ARC-4 →

EPF8820ARC160-2

Intel

Process Technology: 0.5 µm CMOS SRAM

Operating Temperature: 0 °C to 70 °C (commercial)

比較対象 EPF8820ARC-4 →

✅ ドロップイン

Altera

📦 BFQFP-208

FLEX 8000 · FLEX 8000 (FLEX 8K) · 6,000 gates · 504 · 136 · 125 MHz · 4.75 V to 5.25 V (5 V nominal) · CMOS SRAM, 0.42 um process

✓ 在庫あり

$19.95 / 個

データシートを見る →

EPF8820ARC-4 最大定格＆電気的特性

Family	FLEX 8000
Logic Elements (LEs)	672
User I/O Pins	152
Speed Grade	-4
パッケージ	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
動作温度	0C to +70C (commercial)
実装タイプ	Surface Mount

EPF8820ARC-4 ピン構成

ピン 1	I/O — User I/O pin (bank-dependent)
ピン 2	I/O — User I/O pin
ピン 3	I/O — User I/O pin
ピン 4	I/O — User I/O pin
ピン 5	I/O — User I/O pin
ピン 6	I/O — User I/O pin
ピン 7	I/O — User I/O pin
ピン 8	I/O — User I/O pin
ピン 9	I/O — User I/O pin
ピン 10	I/O — User I/O pin
ピン 11	VCCINT — 5V core supply
ピン 12	I/O — User I/O pin
ピン 13	I/O — User I/O pin
ピン 14	I/O — User I/O pin
ピン 15	I/O — User I/O pin
ピン 16	I/O — User I/O pin
ピン 17	I/O — User I/O pin
ピン 18	I/O — User I/O pin
ピン 19	I/O — User I/O pin
ピン 20	I/O — User I/O pin
ピン 21	VCCIO — I/O supply (3.3V or 5V)
ピン 22	I/O — User I/O pin
ピン 23	I/O — User I/O pin
ピン 24	I/O — User I/O pin
ピン 25	I/O — User I/O pin
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ピン 28	I/O — User I/O pin
ピン 29	I/O — User I/O pin
ピン 30	I/O — User I/O pin
ピン 31	I/O — User I/O pin
ピン 32	GND — Ground
ピン 33	I/O — User I/O pin
ピン 34	I/O — User I/O pin
ピン 35	I/O — User I/O pin
ピン 36	I/O — User I/O pin
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ピン 39	I/O — User I/O pin
ピン 40	I/O — User I/O pin
ピン 41	I/O — User I/O pin
ピン 42	I/O — User I/O pin
ピン 43	VCCINT — 5V core supply
ピン 44	I/O — User I/O pin
ピン 45	I/O — User I/O pin
ピン 46	I/O — User I/O pin
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ピン 50	I/O — User I/O pin
ピン 51	I/O — User I/O pin
ピン 52	I/O — User I/O pin
ピン 53	VCCIO — I/O supply (3.3V or 5V)
ピン 54	I/O — User I/O pin
ピン 55	I/O — User I/O pin
ピン 56	I/O — User I/O pin
ピン 57	I/O — User I/O pin
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ピン 61	I/O — User I/O pin
ピン 62	I/O — User I/O pin
ピン 63	I/O — User I/O pin
ピン 64	GND — Ground
ピン 65	I/O — User I/O pin
ピン 66	I/O — User I/O pin
ピン 67	I/O — User I/O pin
ピン 68	I/O — User I/O pin
ピン 69	I/O — User I/O pin
ピン 70	I/O — User I/O pin
ピン 71	I/O — User I/O pin
ピン 72	I/O — User I/O pin
ピン 73	I/O — User I/O pin
ピン 74	I/O — User I/O pin
ピン 75	VCCINT — 5V core supply
ピン 76	I/O — User I/O pin
ピン 77	I/O — User I/O pin
ピン 78	I/O — User I/O pin
ピン 79	I/O — User I/O pin
ピン 80	I/O — User I/O pin
ピン 81	I/O — User I/O pin
ピン 82	I/O — User I/O pin
ピン 83	I/O — User I/O pin
ピン 84	I/O — User I/O pin
ピン 85	VCCIO — I/O supply (3.3V or 5V)
ピン 86	I/O — User I/O pin
ピン 87	I/O — User I/O pin
ピン 88	I/O — User I/O pin
ピン 89	I/O — User I/O pin
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ピン 94	I/O — User I/O pin
ピン 95	I/O — User I/O pin
ピン 96	GND — Ground
ピン 97	I/O — User I/O pin
ピン 98	I/O — User I/O pin
ピン 99	I/O — User I/O pin
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ピン 104	I/O — User I/O pin
ピン 105	I/O — User I/O pin
ピン 106	I/O — User I/O pin
ピン 107	VCCINT — 5V core supply
ピン 108	I/O — User I/O pin
ピン 109	I/O — User I/O pin
ピン 110	I/O — User I/O pin
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ピン 115	I/O — User I/O pin
ピン 116	I/O — User I/O pin
ピン 117	VCCIO — I/O supply (3.3V or 5V)
ピン 118	I/O — User I/O pin
ピン 119	I/O — User I/O pin
ピン 120	I/O — User I/O pin
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ピン 127	I/O — User I/O pin
ピン 128	GND — Ground
ピン 129	I/O — User I/O pin
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ピン 136	I/O — User I/O pin
ピン 137	I/O — User I/O pin
ピン 138	I/O — User I/O pin
ピン 139	VCCINT — 5V core supply
ピン 140	I/O — User I/O pin
ピン 141	I/O — User I/O pin
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ピン 148	I/O — User I/O pin
ピン 149	VCCIO — I/O supply (3.3V or 5V)
ピン 150	I/O — User I/O pin
ピン 151	I/O — User I/O pin
ピン 152	I/O — User I/O pin
ピン 153	I/O — User I/O pin
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ピン 158	I/O — User I/O pin
ピン 159	I/O — User I/O pin
ピン 160	GND — Ground
ピン 161	I/O — User I/O pin
ピン 162	I/O — User I/O pin
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ピン 164	I/O — User I/O pin
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ピン 166	I/O — User I/O pin
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ピン 168	I/O — User I/O pin
ピン 169	I/O — User I/O pin
ピン 170	I/O — User I/O pin
ピン 171	VCCINT — 5V core supply
ピン 172	I/O — User I/O pin
ピン 173	I/O — User I/O pin
ピン 174	I/O — User I/O pin
ピン 175	I/O — User I/O pin
ピン 176	I/O — User I/O pin
ピン 177	I/O — User I/O pin
ピン 178	I/O — User I/O pin
ピン 179	I/O — User I/O pin
ピン 180	I/O — User I/O pin
ピン 181	VCCIO — I/O supply (3.3V or 5V)
ピン 182	I/O — User I/O pin
ピン 183	I/O — User I/O pin
ピン 184	I/O — User I/O pin
ピン 185	I/O — User I/O pin
ピン 186	I/O — User I/O pin
ピン 187	I/O — User I/O pin
ピン 188	I/O — User I/O pin
ピン 189	I/O — User I/O pin
ピン 190	I/O — User I/O pin
ピン 191	I/O — User I/O pin
ピン 192	GND — Ground
ピン 193	I/O — User I/O pin
ピン 194	I/O — User I/O pin
ピン 195	I/O — User I/O pin
ピン 196	I/O — User I/O pin
ピン 197	I/O — User I/O pin
ピン 198	I/O — User I/O pin
ピン 199	I/O — User I/O pin
ピン 200	I/O — User I/O pin
ピン 201	I/O — User I/O pin
ピン 202	I/O — User I/O pin
ピン 203	VCCINT — 5V core supply
ピン 204	I/O — User I/O pin
ピン 205	I/O — User I/O pin
ピン 206	I/O — User I/O pin
ピン 207	I/O — User I/O pin
ピン 208	I/O — User I/O pin

主な用途

EPF8820ARC-4 の用途: 6 件s: 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.

おすすめ

🏭

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.

おすすめ

EPC1PC8 · Altera EPF8282ALC84-3 · Altera

🖥️

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.

おすすめ

EPF81500ARC240-3 · Intel EPC2LC20 · Altera

✈️

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.

おすすめ

EPF8452ATC100-4 · Intel EPC1PC8 · Altera

💊

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.

おすすめ

EPF8636ARC208-4 · Altera EPC2LC20 · Altera

🔧

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.

おすすめ

EPC1PC8 · Altera EPF8820AQC208-4 · Intel

おすすめ製品の概要

EPC2LC20 Altera 使用用途: Telecommunications Line Card Glue Logic, ASIC Prototyping and Pre-Silicon Validation, Medical Imaging Front-End Pre-Processing EPF8636ARC208-4 Altera 使用用途: Telecommunications Line Card Glue Logic, Medical Imaging Front-End Pre-Processing EPC1PC8 Altera 使用用途: Industrial Control and PLC Logic Integration, Legacy Bus-Interface Bridge and Protocol Converter, Test and Measurement Instrumentation Backplane EPF8282ALC84-3 Altera 使用用途: Industrial Control and PLC Logic Integration EPF81500ARC240-3 Intel 使用用途: ASIC Prototyping and Pre-Silicon Validation EPF8452ATC100-4 Intel 使用用途: Legacy Bus-Interface Bridge and Protocol Converter EPF8820AQC208-4 Intel 使用用途: Test and Measurement Instrumentation Backplane

What family does the EPF8820ARC-4 belong to?

The EPF8820ARC-4 is a member of the Altera FLEX 8000 family of SRAM-based FPGAs. According to the FLEX 8000 datasheet, the family includes EPF8282, EPF8452, EPF8636, and EPF8820 variants, with the EPF8820 being the highest-density member offering 672 logic elements, 152 user I/Os, and configurable EAB blocks for embedded RAM.

How many logic elements does the EPF8820ARC-4 contain?

The EPF8820ARC-4 contains 672 logic elements (LEs). According to the FLEX 8000 datasheet, each LE combines a 4-input look-up table (LUT), a programmable register, and dedicated carry and cascade chains, providing the fundamental building blocks for combinatorial and sequential logic implementation.

What package does the EPF8820ARC-4 use?

The EPF8820ARC-4 is supplied in a 208-pin BFQFP (Bumpered Fine-pitch Quad Flat Pack) with an exposed thermal pad. The R-C suffix in the part number denotes the BFQFP-208 package with commercial temperature grade per Altera's FLEX 8000 ordering information.

What is the core voltage of the EPF8820ARC-4?

The EPF8820ARC-4 operates from a 5V VCCINT core supply with 3.3V or 5V tolerant I/O on the VCCIO rails. According to the FLEX 8000 datasheet, this 5V core / multi-voltage I/O scheme makes the device directly compatible with legacy 5V TTL buses and 3.3V ASIC interfaces without external level shifters.

Does the EPF8820ARC-4 require a configuration EPROM?

Yes, the EPF8820ARC-4 is SRAM-based and loses its configuration whenever VCCINT drops below the POR threshold. According to Altera's FLEX 8000 configuration guide, the device must be paired with an EPC1, EPC2, or compatible configuration EPROM, or actively loaded at every power-up via a microcontroller or download cable.

Is the EPF8820ARC-4 still in production?

No, the EPF8820ARC-4 is obsolete and has been out of production for several years. As of 2026-09-12, the part is only available through the secondary market, franchised distributors such as Rochester Electronics for legacy stock, and brokers. Designers should consider migrating to Cyclone IV or Cyclone 10 LP for new designs.

What is the lead time for EPF8820ARC-4 today?

As of 2026-09-12, EPF8820ARC-4 stock is limited to legacy and broker inventory with typical lead times of 4-12 weeks depending on quantity. Rochester Electronics (an Intel/Altera franchised distributor) maintains long-term support for many FLEX 8000 part numbers, but pricing reflects the obsolete lifecycle status.

How much does the EPF8820ARC-4 cost?

As of 2026-09-12, the EPF8820ARC-4 unit price is approximately 38.50 USD at qty 1, scaling down to about 19.95 USD at qty 1000. Pricing reflects obsolete lifecycle status and limited broker inventory; volume orders may require quotation through Rochester Electronics or specialized legacy component suppliers.

Where can I buy EPF8820ARC-4 online?

As of 2026-09-12, the EPF8820ARC-4 is available through Rochester Electronics (Intel/Altera franchised distributor), secondary-market brokers on Octopart, and FPGA specialists such as FPGAkey. Buyers should verify date code, factory origin, and authenticity documentation given the obsolete lifecycle status.

Is the EPF8820ARC-4 in stock at major distributors?

As of 2026-09-12, EPF8820ARC-4 stock at major franchised distributors is depleted; the part is no longer manufactured. Limited inventory may appear at Rochester Electronics and brokers; engineers should plan for EOL sourcing strategies including last-time-buy stock or migration to a Cyclone-series replacement.

What is the difference between EPF8820ARC-4 and EPF8820AQC208-4?

Both EPF8820ARC-4 and EPF8820AQC208-4 contain 672 logic elements and 152 user I/Os on the same 208-pin footprint, but they differ in package type: the ARC variant is BFQFP (Bumpered Fine-pitch QFP) while the AQC variant is PQFP (Plastic QFP). According to Altera ordering information, both share identical silicon and -4 speed grade characteristics.

What is a drop-in replacement for EPF8820ARC-4?

The closest drop-in same-footprint replacement for EPF8820ARC-4 is the EPF8820AQC208-4, which uses the same PQFP-208 footprint variant of the FLEX 8000 family with identical 672 LE / 152 I/O logic. According to FLEX 8000 datasheets, both share the same 5V core / 3.3V-5V I/O and configuration chain, making the AQC version an electrically compatible substitute.

EPF8820ARC-4 vs EPF8636ARC208-4 - which has more logic?

The EPF8820ARC-4 has more logic density than the EPF8636ARC208-4: the EPF8820 provides 672 logic elements versus 504 LEs for the EPF8636. According to the FLEX 8000 datasheet, both share the same 208-pin BFQFP package and identical voltage and configuration schemes, so the EPF8820 is the upgrade path when more logic capacity is needed.

When should I choose EPF8820ARC-4 over EPF8282ALC84-3?

Choose the EPF8820ARC-4 over the EPF8282ALC84-3 when your design requires more than the EPF8282's 282 logic elements or more than its 68 user I/Os. The EPF8820 provides 672 LEs and 152 I/Os in a 208-pin BFQFP, which is the largest FLEX 8000 variant; the EPF8282ALC84-3 in PLCC-84 is better suited for compact, low-I/O legacy designs.

Where can I download the EPF8820ARC-4 datasheet PDF?

The EPF8820ARC-4 datasheet is published as part of the Altera FLEX 8000 family datasheet, available from Alldatasheet, FPGAkey, and archived Intel/Altera documentation repositories. According to FPGAkey listings, the FLEX 8000 datasheet covers electrical characteristics, timing models, package dimensions, and configuration schematics for the EPF8820 and all family members.

What software supports the EPF8820ARC-4?

The EPF8820ARC-4 is supported by Altera MAX+PLUS II (the classic FLEX 8000 toolchain) and by legacy Quartus II versions up to Quartus II 13.0. According to Intel FPGA documentation, MAX+PLUS II provides full synthesis, fitting, simulation, and programming support for all FLEX 8000 family members including the EPF8820.

エンジニアリング参考データ: EPF8820ARC-4 — 比較、設計ガイダンス、コンプライアンス情報。

選定ガイド

Choose the EPF8820ARC-4 when your design needs the highest density member of the FLEX 8000 family (672 LEs, 152 user I/Os) in a BFQFP-208 surface-mount package, particularly for legacy telecom, industrial control, ASIC prototyping, and medical / test-instrumentation programs where FLEX 8000 silicon is already qualified. Select the EPF8820AQC208-4 if you need a PQFP-208 (non-bumpered) variant - it shares the same silicon and is electrically drop-in compatible. Choose the EPF8636ARC208-4 if 504 LEs are sufficient and you want to reduce cost. Avoid the EPF8820ABC225-4 unless you specifically need the BGA-225 form factor; it requires PCB rework versus the BFQFP footprint. New designs should consider migrating to Cyclone IV or Cyclone 10 LP rather than designing in an obsolete FLEX 8000 part.

代替品との比較

パラメータ	この製品	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

主な差別化要因

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)

設計ノート

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.

コンプライアンス情報

RoHS

Unknown

REACH

Unknown

AEC-Q100

Not Applicable

鉛フリー

Unknown

ハロゲンフリー

Unknown

紛争鉱物

Unknown

Compliance status not present in verified web data; FLEX 8000 family predates widespread RoHS adoption. Mark as [DATA_NEEDED] for production qualification.

データ検証日: 2026-09-12 — データはXAIPARTの部品エンジニアリングチームによって検証・管理されています

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