EPF8820ARC208-24 - FLEX 8000 FPGA, 8K Gates, 672 Cells, 208-RQFP | Altera
部品番号: EPF8820ARC208-24 ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $42.5 | $42.50 |
| 10 | $38.2 | $382.00 |
| 100 | $33.9 | $3,390.00 |
| 500 | $30.1 | $15,050.00 |
| 1,000 | $27.8 | $27,800.00 |
EPF8820ARC208-24 概要
A Field Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the high integration of a gate array with the field-programmability of a PLD. The FLEX 8000 architecture sits in the hierarchy as follows: logic cell -> Logic Array Block (LAB) -> row/column interconnect -> FLEX 8000 device -> programmable logic -> semiconductor IC. Compared to simple PLDs (SPLDs/CPLDs), FPGAs provide higher logic density, more registers, and richer interconnect, at the cost of higher unit price and the need for an external configuration memory.
Key features of the EPF8820ARC208-24 include in-circuit reconfigurability (ICR) via Altera EPC1, EPC1064, EPC1213, and EPC1441 serial configuration devices, MultiVolt I/O supporting 3.3 V and 5.0 V interface operation, a built-in Joint Test Action Group (JTAG) boundary-scan test interface, and a typical toggle frequency up to 125 MHz. The architecture is register-rich, making it well-suited to pipelined datapaths, state machines, and bus interfaces.
Typical applications include industrial control glue logic, telecommunications interface cards, glue logic for ASIC prototyping, and bus-bridging interfaces (for example, between a microprocessor and a peripheral bus). Designers migrating legacy FLEX 8000 designs to newer process nodes typically pair the EPF8820ARC208-24 with the MAX+PLUS II or Quartus design environment to retain bitstream compatibility.
When designing with this device, pay attention to the 5 V supply rail tolerance and the need for a dedicated configuration PROM or microcontroller at power-up. Because the FLEX 8000 family is in production decline, lifecycle planning and long-term stocking are recommended for new designs.
ドロップイン代替品: EPF8820ARC208-24 — 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: EPF8820ARC208-24 （同一形状・フットプリント） — 相違点: Process Technology, Configuration Method, Package, Speed Grade, Usable Gates.
クイック比較ツール — 並列比較する代替部品を選択:
EPF8820ARC208-2
✅ ドロップイン✓ 在庫あり
$17.95 / 個
データシートを見る →EPF8820ARC208-4
✅ ドロップイン✓ 在庫あり
$25.4 / 個
データシートを見る →EPF8820AQC208-4
✅ ドロップイン✓ 在庫あり
$32.8 / 個
データシートを見る →EPF8820AQC208-3N
✅ ドロップイン✓ 在庫あり
$11.4 / 個
データシートを見る →EPF8820AQC208-2
✅ ドロップイン✓ 在庫あり
$22.8 / 個
データシートを見る →EPF8820AQC208-3
✅ ドロップイン✓ 在庫あり
$18.95 / 個
データシートを見る →EPF8820ARC208-24 最大定格＆電気的特性
| Family | FLEX 8000 |
| Usable Gates | 8,000 |
| Logic Cells | 672 |
| Logic Array Blocks (LABs) | 48 |
| User I/O Pins | 152 |
| Maximum Toggle Frequency | 125 MHz |
| Process Technology | 0.42 µm CMOS SRAM |
| Supply Voltage (VCC) | 4.75 V to 5.25 V (5 V nominal) |
| I/O Standards | 3.3 V / 5.0 V MultiVolt I/O |
| Speed Grade | -24 |
| Configuration Method | Serial configuration device (EPC1/EPC1064/EPC1213/EPC1441), parallel EPROM, or JTAG |
| In-Circuit Reconfigurability | Yes (ICR) |
| パッケージ | 208-pin RQFP (exposed pad) |
EPF8820ARC208-24 208-pin rqfp (exposed pad) ピン配置ガイド
EPF8820ARC208-24 (208-pin rqfp (exposed pad) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: EPF8820ARC208-24.
詳細は データシート をご参照ください。
主な用途
EPF8820ARC208-24 の用途: 6 件s: Industrial Control Glue Logic, Telecommunications Interface Card, ASIC Prototyping and Emulation, Legacy Peripheral Bus Bridge, Flat-Panel Display Controller, Military and Aerospace Avionics Bus Interface.
Industrial Control Glue Logic
The EPF8820ARC208-24 is well-suited to industrial control glue logic: 8,000 usable gates and 672 logic cells can host multiple state machines, encoder counters, and PWM generators simultaneously, while 152 user I/O provide fan-out to optocouplers, relay drivers, and 24 V signal-conditioning front-ends. Its 5 V MultiVolt I/O directly interfaces to 5 V PLC backplanes without level shifters, and its 125 MHz toggle frequency comfortably handles 50/60 Hz mains-synchronized control loops plus encoder inputs up to several hundred kHz. The 208-pin RQFP package exposes dedicated JTAG pins for in-system reconfiguration during commissioning, and in-circuit reconfigurability allows field firmware updates without powering down the machine.
おすすめ
Telecommunications Interface Card
In telecom interface cards the EPF8820ARC208-24 acts as a protocol-bridging controller: 8K gates are sufficient to implement HDLC framing, E1/T1 time-slot assignment, and ATM SAR segmentation, while 152 I/O support parallel bus interfaces to framers and TDM backplanes. The 125 MHz internal toggle rate comfortably meets E1 (2.048 MHz), T1 (1.544 MHz) and STM-1/OC-3 (155 MHz) line-side rates when combined with external PHYs. JTAG-based configuration enables remote bitstream updates via the card-management microcontroller, and the exposed-pad 208-RQFP provides adequate thermal headroom for 5 V operation in sealed CO enclosures. Industrial-grade -24 speed grade timing is well matched to telecom card slot timing budgets.
おすすめ
ASIC Prototyping and Emulation
The EPF8820ARC208-24 is frequently used to prototype and emulate sub-blocks of larger ASIC designs: 8K usable gates map cleanly onto typical peripheral controllers, DMA engines, and bus arbiters, while JTAG-based in-circuit reconfigurability allows rapid design iterations by reloading the bitstream in seconds. The 208-pin RQFP exposes enough I/O to break out a 32-bit processor bus plus interrupt and DMA handshakes, which is the typical minimum for a representative ASIC block. Designers can chain multiple EPF8820ARC208-24 devices on a single JTAG chain to emulate larger systems, leveraging identical timing across the -24 speed grade family. Quartus MAX+PLUS II design flow is well documented and supported for legacy IP reuse.
おすすめ
Legacy Peripheral Bus Bridge
The EPF8820ARC208-24 is a natural fit for legacy bus-bridging functions between microprocessors, peripherals, and DSPs: 8K gates implement full master/target state machines for ISA, PC/104, or proprietary local buses, while 152 I/O provide ample address and data fan-out plus interrupt and DMA handshake signals. Its 5 V MultiVolt I/O directly drives 5 V peripheral chips without level translation, and the 125 MHz toggle rate supports ISA-style 8-25 MHz bus cycles plus standard asynchronous peripheral handshakes. JTAG in-system configuration allows the bridge personality (master vs target, address mapping) to be swapped in the field, which simplifies inventory for OEMs supporting multiple SKUs.
おすすめ
Flat-Panel Display Controller
Flat-panel display controllers benefit from the EPF8820ARC208-24's high I/O count and register-rich architecture: 152 user I/O can simultaneously drive RGB data buses, control signals, and backlight PWM, while the 672 logic cells implement timing generators, gamma-correction lookup tables, and LVDS/TTL conversion logic. The 125 MHz toggle rate is sufficient for XGA (65 MHz pixel clock) and SXGA (108 MHz) panels when the design uses internal pipelined registers, and the -24 speed grade timing accommodates most commercial-grade LCD timing budgets. The 208-pin RQFP exposed pad provides sufficient thermal dissipation for sealed display enclosures. JTAG configuration allows panel-timing personality changes across product variants without hardware rework.
おすすめ
Military and Aerospace Avionics Bus Interface
In avionics bus-interface applications the EPF8820ARC208-24 is used for MIL-STD-1553, ARINC 429, and discrete I/O conditioning: 8K gates implement protocol encoders/decoders and error-checking logic, while 152 I/O support parallel avionics databuses plus isolated discrete I/O channels. The -24 speed grade is well matched to ARINC 429's 100 kHz data rate and MIL-STD-1553's 1 MHz word rate, and the 208-pin RQFP package is available in extended-temperature grades suitable for avionics thermal profiles. JTAG-based reconfiguration supports BIT (Built-In Test) personality swaps, and the FLEX 8000 family's long heritage in military and aerospace programs provides the documentation and process pedigree required for DO-254 and MIL-HDBK-454 compliance reviews.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: EPF8820ARC208-24 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | EPF8820ARC208-2 | EPF8820ARC208-4 | EPF8820AQC208-4 | EPF8820AQC208-3N |
|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera |
| Package | 208-pin RQFP (exposed pad) | 208-pin RQFP (exposed pad) - same | 208-pin RQFP (exposed pad) - same | 208-pin RQFP (exposed pad) - same | 208-pin RQFP (exposed pad) - same |
| Usable Gates | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 |
| Logic Cells | 672 | 672 | 672 | 672 | 672 |
| User I/O | 152 | 152 | 152 | 152 | 152 |
| Speed Grade | -24 | -2 (faster) | -4 (slower) | -4 | -3 |
| Supply Voltage | 4.75-5.25 V | 4.75-5.25 V | 4.75-5.25 V | 4.75-5.25 V | 4.75-5.25 V |
| Process / Grade | 0.42 µm standard | 0.42 µm standard | 0.42 µm standard | 0.42 µm Q-grade (lower power) | 0.42 µm Q-grade (lower power) |
| Configuration PROM Compatibility | EPC1/EPC1064/EPC1213/EPC1441 | EPC1/EPC1064/EPC1213/EPC1441 | EPC1/EPC1064/EPC1213/EPC1441 | EPC1/EPC1064/EPC1213/EPC1441 | EPC1/EPC1064/EPC1213/EPC1441 |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
主な差別化要因
- Slowest available speed grade in the EPF8820A 208-RQFP family （vs EPF8820ARC208-2)
- Lower-power Q-process alternatives available in same package （vs EPF8820AQC208-4)
- Maximum available I/O count for the EPF8820 family （vs EPF8820ARC160-2 (160-pin RQFP))
設計ノート
The EPF8820ARC208-24 requires a tightly regulated 5 V supply (4.75 V to 5.25 V). Decouple VCCINT (core) and VCCIO (I/O bank) pins with 0.1 µF ceramic capacitors placed within 5 mm of each supply pin, plus a single 47 µF tantalum bulk capacitor per supply plane. Add a ferrite bead between the analog 5 V rail and the FPGA supply to suppress switching noise from neighbouring digital ICs. During configuration, Icc rises sharply (typically 200-300 mA peak for the -24 speed grade), so the regulator must source at least 500 mA without sagging below 4.75 V. Estimated: based on FLEX 8000 family ICC figures and standard decoupling practice; consult the datasheet for verified ICC values.
Solder the exposed thermal pad of the 208-pin RQFP package to a copper pour on the top layer, stitching it with at least 8 thermal vias (0.3 mm drill, 1.0 mm pitch) to an inner ground plane. Without this thermal pad connection, junction temperature can exceed 100 °C at full toggle frequency and ambient > 50 °C. Route all configuration signals (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0) as short traces (< 50 mm) and keep them away from switching power lines. Provide a 4.7 kΩ pull-up on nCONFIG to VCCIO and a 4.7 kΩ pull-up on nSTATUS to VCCIO if not driven by the configuration PROM.
Do not leave MSEL[2:0] floating: these pins select the configuration mode (EPC1 vs parallel EPROM vs JTAG) and a floating MSEL can latch into an unsupported mode and prevent configuration. Connect them to VCC or GND via 1 kΩ resistors. Do not tie CONF_DONE low before power-up: this prevents configuration and is a common debugging pitfall. Always sequence the configuration PROM VCC and the FPGA VCCINT within 100 ms to avoid PROM corruption. Estimated: timing values are conservative defaults; verify against the FLEX 8000 datasheet configuration timing diagrams.
コンプライアンス情報
Compliance status not confirmed in the provided FLEX 8000 datasheet excerpts. Original Altera FLEX 8000 family parts predate RoHS and may use tin-lead (SnPb) finish. For RoHS-compliant assembly, choose EPF8820AQC208-3N or EPF8820AQC208-2N variants (suffix 'N' typically denotes lead-free).
