EPF8820ARI208-4N - FLEX 8000 FPGA 8K Gates 672 Cells 5V RQFP-208 | Altera
MPN: EPF8820ARI208-4N ✗ پایان تولیدEPF8820ARI208-4N نمای کلی
An FPGA (Field-Programmable Gate Array) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnect, and programmable I/O cells. It sits in the broader hierarchy of programmable logic devices (PLD) -> CPLD/FPGA -> programmable logic -> digital IC -> semiconductor. FPGAs allow designers to implement custom digital logic, glue functions, state machines, and modest datapath blocks after PCB fabrication, eliminating mask and NRE costs. The FLEX 8000 family specifically targets high-volume, cost-sensitive glue-logic and bus-interface applications where small-to-medium gate counts and 5 V tolerance are required.
Key features of the EPF8820ARI208-4N include 8K typical gates (672 logic elements), 820 flip-flops, embedded array blocks (EABs) for memory, configurable I/O supporting 3.3 V and 5 V levels, in-system programmability through a JTAG/IEEE 1149.1 interface, and a maximum operating frequency of 125 MHz. The RQFP-208 package provides 152 user I/O pins and a Gull-wing lead form suitable for surface-mount assembly.
Technically, the device uses a continuous FastTrack interconnect routing architecture with segmented horizontal and vertical paths, providing predictable timing delays regardless of place-and-route. Each logic element combines a 4-input look-up table (LUT), a programmable register, and a carry/chain structure. Embedded Array Blocks (EABs) can be configured as 256×8, 512×4, 1024×2, or 2048×1 memory blocks, enabling on-chip RAM/ROM for FIFO and lookup-table functions.
Typical applications include industrial glue-logic replacement, bus-interface bridging (ISA, PCI, VME), legacy telecommunications backplane controllers, military/aerospace retrofits, and educational development platforms. The 5 V tolerant I/Os make it a natural fit for legacy 5 V systems that cannot tolerate modern 1.8 V/2.5 V/3.3 V FPGAs.
When designing with this part, note that it is a legacy device on Altera/Intel PSG's product lifecycle. New designs should evaluate Cyclone IV or Cyclone 10 LP for 3.3 V I/O compatibility, but those are not pin-compatible drop-in upgrades. Existing designs using this part should plan for EOL/EOS risk and verify long-term supply with distributors.
This page synthesizes distributor pricing, drop-in same-package alternatives drawn from the Altera FLEX 8000 family, and practical design notes not found in the manufacturer datasheet.
جایگزین‌های drop-in برای EPF8820ARI208-4N — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای EPF8820ARI208-4N (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Process Technology, Device Type, Operating Temperature Grade, Mounting Type.
EPF8820ARC208-4N
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARC208-3N
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARI208-3N
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARI208-4
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARI208-4H
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARI208-4N حداکثر مقادیر مجاز و مشخصات الکتریکی
| Family | FLEX 8000 |
| Logic Elements / Cells | 672 |
| Typical Gates | 8K |
| Flip-Flops | 820 |
| Maximum Operating Frequency | 125 MHz |
| Process Technology | 0.42 µm CMOS |
| Supply Voltage (Nominal) | 5 V |
| Supply Voltage Range | 4.5 V to 5.5 V |
| I/O Voltage Standards | 3.3 V / 5 V configurable |
| بسته‌بندی | 208-pin RQFP (Power Quad Flat Pack) |
| نوع نصب | Surface Mount (Gull-wing) |
| User I/O Count | 152 |
| Embedded Array Blocks (EABs) | 12 (256×8 to 2048×1 RAM modes) |
| Operating Temperature Grade | Industrial |
| Programming Interface | JTAG / IEEE 1149.1 |
راهنمای پیکربندی پین EPF8820ARI208-4N 208-pin rqfp (power quad flat pack)
پیکربندی پین برای EPF8820ARI208-4N (پکیج 208-pin rqfp (power quad flat pack)). این IC دیجیتال شامل GPIO، رابط‌های ارتباطی (UART، SPI، I2C) و پین‌های تغذیه است. برای عملکردهای جایگزین پین و گزینه‌های پیکربندی به دیتاشیت سازنده مراجعه کنید. ضروری برای طراحی سیستم‌های نهفته و چیدمان PCB.
داده پین‌آوت تفصیلی موجود نیست برای EPF8820ARI208-4N.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
EPF8820ARI208-4N مناسب است برای 6 کاربردs: Legacy Industrial Glue Logic Replacement, Bus Interface Bridging (ISA/PCI/VME), Telecommunications Backplane Controllers, Military & Aerospace Retrofits, Test & Measurement Front-End Logic, Educational FPGA Development Platforms.
Legacy Industrial Glue Logic Replacement
The EPF8820ARI208-4N is a natural drop-in for legacy 5 V TTL glue-logic designs that need to be consolidated into a single programmable device. Its 8K gates / 672 logic elements are sufficient to absorb multiple 74LS/74F/74AS glue packages, freeing board area and reducing BOM. Industrial temperature grade (-40 to +85 C) supports factory-floor environments, and 5 V-tolerant I/Os interface directly with 5 V logic without level shifters. The JTAG/IEEE 1149.1 interface allows in-system reprogramming, ideal for late-stage design fixes. Designers should budget I/O count carefully because the 208-pin RQFP only exposes 152 user I/Os.
پیشنهادی
Bus Interface Bridging (ISA/PCI/VME)
The EPF8820ARI208-4N is widely used as a bus-interface bridge in legacy 5 V systems, converting between ISA, PCI, VME, and proprietary backplane protocols. Its 820 flip-flops and 12 EABs (each configurable up to 2Kbit RAM) provide the register file and FIFO depth typical of bus-bridge state machines, while 125 MHz operation supports PCI 33 MHz timing closure. The 152 user I/Os are enough to bridge multi-byte data buses plus full address/control signal sets. Compared to a CPLD, the 672-LE capacity allows full datapath plus protocol-state-machine in one device.
پیشنهادی
Telecommunications Backplane Controllers
The EPF8820ARI208-4N is suitable for telecom backplane controllers where 5 V tolerance and long-term availability are mandated. Its 8K gates provide the state-machine capacity for HDLC framing, TDM bus arbitration, and alarm monitoring, while the 12 EABs implement small lookup tables for routing tables and configuration registers. 125 MHz internal frequency supports TDM bit-clock multiplexing for E1/T1/J1 streams. Designers in telecom should note the FLEX 8000 family is NRND; long-life-cycle SPX/distributor support is essential for the 10-15 year deployment windows common in this segment.
پیشنهادی
Military & Aerospace Retrofits
The EPF8820ARI208-4N is appropriate for military and aerospace retrofits and legacy-system sustainment programs. Its industrial temperature grade, mature 0.42 µm CMOS process, and long-life Altera/Intel PSG support make it suitable for systems designed in the late 1990s/early 2000s that are still in service. The 208-pin RQFP package is widely accepted in aerospace PCBs with established reliability data. Engineers should verify MIL-STD-883 or specific aerospace screening requirements with their distributor, and note that dedicated military-grade (M) speed/temperature variants may be available under different ordering codes.
پیشنهادی
Test & Measurement Front-End Logic
The EPF8820ARI208-4N is well-suited to test-and-measurement front-end logic where custom timing patterns and channel multiplexing are needed. Its 672 logic elements, 820 flip-flops, and 12 EABs provide enough capacity to implement multi-channel pattern generators, multiplexers, and trigger sequencers. The 125 MHz Fmax supports fast pattern generation up to 125 Megasamples/sec in pipelined architectures. 5 V I/O compatibility allows direct connection to legacy instrumentation front-ends without level translators, while JTAG programming enables rapid pattern iteration during test development.
پیشنهادی
Educational FPGA Development Platforms
The EPF8820ARI208-4N remains a popular choice for university FPGA courses and textbook examples (e.g., legacy Altera FLEX 8000 lab manuals). Its 8K gates are large enough for meaningful design projects (UARTs, FIFO controllers, simple CPUs) yet small enough that students can complete place-and-route in seconds using MAX+PLUS II. The 208-pin RQFP package allows through-hole-style breakout boards using PQFP-to-DIP adapters, simplifying laboratory wiring. 5 V tolerance protects against student wiring mistakes, while JTAG programming means no external programmer beyond a ByteBlaster cable is required.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای EPF8820ARI208-4N — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | EPF8820ARC208-4N | EPF8820ARC208-3N | EPF8820ARI208-3N | EPF8820ARI208-4 | EPF8820ARI208-4H |
|---|---|---|---|---|---|---|
| Brand | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) |
| Package | 208-pin RQFP | 208-pin RQFP - same | 208-pin RQFP - same | 208-pin RQFP - same | 208-pin RQFP - same | 208-pin RQFP - same |
| Family | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 |
| Logic Elements | 672 | 672 | 672 | 672 | 672 | 672 |
| Typical Gates | 8K | 8K | 8K | 8K | 8K | 8K |
| Flip-Flops | 820 | 820 | 820 | 820 | 820 | 820 |
| Speed Grade | -4 | -4 | -3 (faster) | -3 (faster) | -4 | -4 |
| Temperature Grade | Industrial (-40 to +85 C) | Commercial (0 to +70 C) | Commercial (0 to +70 C) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) |
تفاوت‌های کلیدی
- Same package and pinout as EPF8820ARC208-4N (در مقابلEPF8820ARC208-4N)
- Lower speed grade than EPF8820ARI208-3N (در مقابلEPF8820ARI208-3N)
- 5 V I/O tolerance preserved across all 8820 variants (در مقابلEPF8820ARI208-4H)
یادداشت‌های طراحی
Estimated: at 5 V supply and typical 50 mA core current, the EPF8820ARI208-4N dissipates approximately 250 mW quiescent. Add 5-20 mW per toggling I/O at 25 MHz. Decouple each VCC pin with a 0.1 µF ceramic capacitor placed within 5 mm of the pin, and place a 10 µF tantalum bulk capacitor near the package. The 0.42 µm CMOS process is not as power-efficient as modern FPGAs, so thermal management is rarely an issue but supply decoupling is critical to meet 125 MHz timing closure.
The 208-pin RQFP has 0.5 mm lead pitch and gull-wing leads. Route all signals on inner PCB layers and use the outer layers primarily for power/ground. Provide at least 4 power planes: 5 V core, 5 V VCCIO, 3.3 V VCCIO (if used), and ground. JTAG signals (TCK, TMS, TDI, TDO) should be guarded with ground traces and pulled up/down per Altera's application note. Maintain 50 Ω characteristic impedance on clock traces and place clock generation components within 25 mm of the clock input pin.
Do not assume the EPF8820ARI208-4N can be programmed with Quartus Prime without re-checking the device support list; some Quartus versions dropped FLEX 8000 support and MAX+PLUS II is required. Do not mix 3.3 V and 5 V I/O banks arbitrarily; consult the FLEX 8000 datasheet for VCCIO pin assignments. Do not connect VCCIO pins to 5 V when configured for 3.3 V I/O. The configuration memory is volatile SRAM - the design must be loaded from a configuration EPROM (EPC2 or compatible) on every power-up.
اطلاعات انطباق
EPF8820ARI208-4N is a legacy NRND part from the 0.42 µm CMOS generation. The -H suffix variant (EPF8820ARI208-4H) typically denotes lead-free/RoHS-compatible lead finish, but compliance status of the standard -4N variant is not specified in the verified web data and should be confirmed with the distributor at order entry. AEC-Q100 is not applicable because this is an FPGA, not an automotive-grade IC.