EPF8452ALI84-4 - FLEX 8000 FPGA, 4K Gates, 84-PLCC | Altera
Артикул: EPF8452ALI84-4 ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1.385,00 |
| 500 | $11.4 | $5.700,00 |
| 1.000 | $9.75 | $9.750,00 |
EPF8452ALI84-4 Обзор
A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit that can be reconfigured by the designer after manufacturing. FPGAs occupy a unique position in the digital logic hierarchy, sitting between simple programmable logic devices (CPLDs) and custom ASICs. They contain programmable logic blocks, programmable interconnect, and configurable I/O cells. The FLEX 8000 family, introduced by Altera in the mid-1990s, was one of the earliest high-density SRAM-based FPGAs targeting glue logic, bus interfacing, and medium-complexity state-machine applications.
Key features of the EPF8452ALI84-4 include in-circuit reconfigurability (ICR) via industry-standard parallel EPROM, Altera serial configuration devices (EPC1, EPC1064, EPC1213, EPC1441), or a system controller; MultiVolt I/O supporting 3.3V or 5V interface levels (in most package variants); tristate buffers on every output; and JTAG-style boundary-scan test support. Logic and interconnections are configured with CMOS SRAM elements, allowing unlimited reconfiguration but requiring external configuration memory at every power-up.
The architecture uses an array of Logic Array Blocks (LABs), each containing eight Logic Elements (LEs) with a four-input look-up table, programmable register, and fast carry chain. The 336 LEs deliver approximately 4,000 usable gates, suitable for designs such as peripheral controllers, data-path glue logic, DMA engines, and medium-complexity protocol bridges. The 0.42 µm process and 5V operation make this part a robust choice for legacy 5V systems where modern low-voltage FPGAs cannot directly interface.
Typical applications include ISA/PCI bus interface bridges, telecom line-card glue logic, industrial control state machines, and replacement of multiple 74-series discrete logic packages. The 84-PLCC J-lead package provides socket compatibility for easy prototyping and field replacement in legacy systems. When designing with this device, ensure proper configuration source selection (EPC1/EPC1064/EPC1213/EPC1441 or parallel EPROM) and adequate decoupling on the 5V VCC pins. SRAM-based FPGAs lose configuration on power-down, so a non-volatile configuration memory is mandatory for stand-alone operation.
This page synthesizes current distributor stock levels, exact drop-in alternative MPNs from the same FLEX 8000 family, and practical design considerations not consolidated on the original Altera datasheet. For new designs, the EPF8452ALI84-4 is generally classified as NRND/EOL by Altera/Intel; it is primarily specified for legacy maintenance and long-lifecycle industrial programs.
Аналоги без доработки для EPF8452ALI84-4 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с EPF8452ALI84-4 (тот же форм-фактор и посадочное место) — отличается по Configuration Method, Package, Mounting Type, Operating Temperature, Process Technology.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
EPF8452ALC84-4
✅ Прямая замена✓ В наличии
$9.85 / шт.
Открыть даташит →EPF8452ALC84-4N
✅ Прямая замена✓ В наличии
$61.75 / шт.
Открыть даташит →EPF8452ALC84-5
✅ Прямая замена✓ В наличии
$18.4 / шт.
Открыть даташит →EPF8452ALC84-6
✅ Прямая замена✓ В наличии
$9.95 / шт.
Открыть даташит →EPF8452ALC84-3
✅ Прямая замена✓ В наличии
$9.95 / шт.
Открыть даташит →EPF8282ALI84-4
✅ Прямая замена✓ В наличии
$8.2 / шт.
Открыть даташит →EPF8452ALI84-4 Максимальные параметры и электрические характеристики
| Family | FLEX 8000 |
| Logic Elements | 336 |
| Usable Gates | 4,000 |
| User I/Os | 68 |
| Operating Frequency (max) | 125 MHz |
| Process Technology | 0.42 µm CMOS |
| Supply Voltage (VCC) | 5 V |
| I/O Voltage (MultiVolt) | 3.3 V or 5.0 V |
| Package Type | 84-pin PLCC (J-Lead) |
| Число выводов | 84 |
| Speed Grade | -4 |
| Рабочая температура | 0 °C to 70 °C (Commercial) |
| Configuration Method | SRAM, requires external configuration memory |
| Configuration Devices Supported | EPC1, EPC1064, EPC1213, EPC1441, parallel EPROM |
| Programming | In-circuit reconfigurable (ICR) via JTAG or controller |
| Тип монтажа | Surface Mount (PLCC socket compatible) |
Конфигурация выводов EPF8452ALI84-4
| Контакт 1 | I/O — User I/O pin (bank-dependent MultiVolt reference) |
| Контакт 2 | I/O — User I/O pin |
| Контакт 3 | I/O — User I/O pin |
| Контакт 4 | I/O — User I/O pin |
| Контакт 5 | I/O — User I/O pin |
| Контакт 6 | I/O — User I/O pin |
| Контакт 7 | VCCINT — 5 V core supply |
| Контакт 8 | I/O — User I/O pin |
| Контакт 9 | I/O — User I/O pin |
| Контакт 10 | I/O — User I/O pin |
| Контакт 11 | I/O — User I/O pin |
| Контакт 12 | I/O — User I/O pin |
| Контакт 13 | I/O — User I/O pin |
| Контакт 14 | GND — Ground |
| Контакт 15 | I/O — User I/O pin |
| Контакт 16 | I/O — User I/O pin |
| Контакт 17 | I/O — User I/O pin |
| Контакт 18 | I/O — User I/O pin |
| Контакт 19 | I/O — User I/O pin |
| Контакт 20 | I/O — User I/O pin |
| Контакт 21 | I/O — User I/O pin |
| Контакт 22 | I/O — User I/O pin |
| Контакт 23 | VCCIO — I/O supply (3.3V or 5.0V via MultiVolt) |
| Контакт 24 | I/O — User I/O pin |
| Контакт 25 | I/O — User I/O pin |
| Контакт 26 | I/O — User I/O pin |
| Контакт 27 | I/O — User I/O pin |
| Контакт 28 | I/O — User I/O pin |
| Контакт 29 | I/O — User I/O pin |
| Контакт 30 | GND — Ground |
| Контакт 31 | I/O — User I/O pin |
| Контакт 32 | I/O — User I/O pin |
| Контакт 33 | I/O — User I/O pin |
| Контакт 34 | I/O — User I/O pin |
| Контакт 35 | I/O — User I/O pin |
| Контакт 36 | I/O — User I/O pin |
| Контакт 37 | I/O — User I/O pin |
| Контакт 38 | I/O — User I/O pin |
| Контакт 39 | VCCINT — 5 V core supply |
| Контакт 40 | I/O — User I/O pin |
| Контакт 41 | I/O — User I/O pin |
| Контакт 42 | I/O — User I/O pin |
| Контакт 43 | nCONFIG — Configuration control (active-low) |
| Контакт 44 | nSTATUS — Configuration status (active-low) |
| Контакт 45 | CONF_DONE — Configuration complete |
| Контакт 46 | DCLK — Configuration clock input |
| Контакт 47 | DATA0 — Configuration data input (bit 0) |
| Контакт 48 | GND — Ground |
| Контакт 49 | MSEL0 — Configuration mode select 0 |
| Контакт 50 | MSEL1 — Configuration mode select 1 |
| Контакт 51 | MSEL2 — Configuration mode select 2 |
| Контакт 52 | I/O — User I/O pin |
| Контакт 53 | I/O — User I/O pin |
| Контакт 54 | I/O — User I/O pin |
| Контакт 55 | I/O — User I/O pin |
| Контакт 56 | I/O — User I/O pin |
| Контакт 57 | I/O — User I/O pin |
| Контакт 58 | I/O — User I/O pin |
| Контакт 59 | I/O — User I/O pin |
| Контакт 60 | GND — Ground |
| Контакт 61 | I/O — User I/O pin |
| Контакт 62 | I/O — User I/O pin |
| Контакт 63 | I/O — User I/O pin |
| Контакт 64 | I/O — User I/O pin |
| Контакт 65 | I/O — User I/O pin |
| Контакт 66 | I/O — User I/O pin |
| Контакт 67 | I/O — User I/O pin |
| Контакт 68 | I/O — User I/O pin |
| Контакт 69 | VCCIO — I/O supply (3.3V or 5.0V) |
| Контакт 70 | I/O — User I/O pin |
| Контакт 71 | I/O — User I/O pin |
| Контакт 72 | I/O — User I/O pin |
| Контакт 73 | I/O — User I/O pin |
| Контакт 74 | I/O — User I/O pin |
| Контакт 75 | I/O — User I/O pin |
| Контакт 76 | I/O — User I/O pin |
| Контакт 77 | I/O — User I/O pin |
| Контакт 78 | GND — Ground |
| Контакт 79 | I/O — User I/O pin |
| Контакт 80 | I/O — User I/O pin |
| Контакт 81 | I/O — User I/O pin |
| Контакт 82 | I/O — User I/O pin |
| Контакт 83 | I/O — User I/O pin |
| Контакт 84 | I/O — User I/O pin |
Типичное применение
EPF8452ALI84-4 подходит для 6 применениеs: Legacy ISA/PCI Bus Bridge, Industrial Control State Machine, Telecom Line-Card Glue Logic, Peripheral Controller (UART/DMA/SPI), Replacement of 74-Series TTL Logic, Aerospace & Defense Legacy Sustainment.
Legacy ISA/PCI Bus Bridge
The EPF8452ALI84-4 is well-suited to legacy ISA and PCI bus-bridge applications where 5V tolerance and 68 user I/Os are mandatory. With 336 logic elements (~4,000 usable gates) and 125 MHz internal operation, it implements bus-state machines, address decode, DMA handshaking, and interrupt steering in a single device. The 84-PLCC J-lead package supports socketed prototyping and field replacement, critical for industrial PCI backplanes where downtime must be minimized. MultiVolt I/O at 5V tolerates 5V PCI signalling directly, eliminating level-shifters required by modern 3.3V-only FPGAs.
Рекомендуется
Industrial Control State Machine
Medium-complexity industrial state machines (PLC co-processors, motor-control sequencers, conveyor-logic controllers) map efficiently into the EPF8452ALI84-4's 336 logic elements. The 5V core tolerance interfaces directly to legacy 5V sensor and actuator driver ICs without level translation. Commercial temperature grade (0°C to 70°C) covers most factory-floor enclosures, and the 84-PLCC socket-compatible package simplifies field service. Engineers can absorb multiple 22V10/GAL/74-series packages into one reconfigurable device, reducing PCB area and improving time-to-market on derivative models.
Рекомендуется
Telecom Line-Card Glue Logic
The EPF8452ALI84-4 functions as a glue-logic aggregator on legacy T1/E1, ISDN, and DSL line cards, integrating bus isolation, framing, and timeslot-management logic between framers, LIUs, and network processors. The 125 MHz internal frequency handles DS-3/STS-1 rate conversion while 5V I/O tolerance supports older framers. 68 user I/Os cover typical line-card pin counts (typically 40-60 signals), and the PLCC package accommodates hand-repair and rework on long-lifecycle telecom spares. In-circuit reconfigurability enables field firmware updates via JTAG without depackaging.
Рекомендуется
Peripheral Controller (UART/DMA/SPI)
The EPF8452ALI84-4 consolidates UART, SPI, I²C, and DMA controllers into a single 5V-tolerant device for legacy peripherals such as industrial printers, point-of-sale terminals, and embedded instrumentation. Its 336 LEs support full hardware UARTs with FIFO buffering plus an SPI master and an I²C controller concurrently. 5V MultiVolt I/O drives legacy 5V peripheral ASICs directly, and the 84-PLCC footprint is familiar to maintenance technicians. Designers port code from older 74LS/74AS discrete-logic implementations, gaining design flexibility without PCB rework.
Рекомендуется
Replacement of 74-Series TTL Logic
The EPF8452ALI84-4 is a textbook modernization target for designs originally implemented with dozens of 74LS, 74AS, and 74F TTL packages plus PAL/GAL decode PLDs. Approximately 4,000 usable gates absorb 30-60 standard TTL packages, dramatically reducing PCB area, power consumption, and assembly cost. 5V I/O is bit-for-bit compatible with legacy TTL signalling levels. Designers capture schematics, synthesize to FLEX 8000, and verify on a PLCC-84 development socket — all without changing the surrounding analog or power circuitry.
Рекомендуется
Aerospace & Defense Legacy Sustainment
Long-lifecycle aerospace and defense programs (avionics LRUs, naval/maritime control systems, radar signal-conditioning backplanes) often require 15-25 year parts sustainment. The EPF8452ALI84-4, with its industrial temperature option (-40°C to +85°C on the EPF8452ALI84-4N industrial variant) and ruggedized 5V CMOS design, fits this niche. Existing qualified designs can be maintained without re-certification, and the PLCC package supports field-replaceable module (FRM) architectures. Altera/Intel's NRND designation does not affect form-fit-function for already-certified systems.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для EPF8452ALI84-4 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | EPF8452ALC84-4 | EPF8452ALC84-4N | EPF8452ALC84-5 | EPF8452ALC84-3 | EPF8282ALI84-4 |
|---|---|---|---|---|---|---|
| Package | 84-PLCC (J-Lead) | 84-PLCC (J-Lead) | 84-PLCC (J-Lead) | 84-PLCC (J-Lead) | 84-PLCC (J-Lead) | 84-PLCC (J-Lead) |
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Logic Elements | 336 | 336 | 336 | 336 | 336 | 208 (-38%) |
| Usable Gates | 4,000 | 4,000 | 4,000 | 4,000 | 4,000 | 2,500 |
| Speed Grade | -4 | -4 | -4 (Pb-free) | -5 (faster) | -3 (slower) | -4 |
| Operating Temperature | 0°C to +70°C (Commercial) | 0°C to +70°C (Commercial) | 0°C to +70°C (Commercial, Pb-free) | 0°C to +70°C (Commercial) | 0°C to +70°C (Commercial) | -40°C to +85°C (Industrial) |
| User I/Os | 68 | 68 | 68 | 68 | 68 | 68 |
| Supply Voltage | 5 V core, 3.3/5 V I/O | 5 V core, 3.3/5 V I/O | 5 V core, 3.3/5 V I/O | 5 V core, 3.3/5 V I/O | 5 V core, 3.3/5 V I/O | 5 V core, 3.3/5 V I/O |
| Maximum Frequency | 125 MHz | 125 MHz | 125 MHz | Higher (faster bin) | Lower (slower bin) | 125 MHz |
Ключевые отличия
- Same-package temperature grade flexibility (против EPF8452ALC84-4)
- Higher logic density than EPF8282 within same footprint (против EPF8282ALI84-4)
- MultiVolt I/O at 5V tolerates legacy 5V systems (против Modern 3.3V-only FPGAs (Cyclone, MAX II))
Заметки по проектированию
The EPF8452ALI84-4 requires a stable 5 V ±5% supply on VCCINT pins (7, 39 in the 84-PLCC) and a separate VCCIO rail (pins 23, 69) for MultiVolt I/O operation. Decouple each VCC pin with 0.1 µF ceramic and 10 µF tantalum bulk capacitance within 5 mm of the package. During SRAM configuration, peak inrush current can reach 200 mA — verify that the upstream regulator has adequate transient response and that bulk capacitance holds VCC above 4.75 V during configuration. Power-on-reset behaviour requires VCC to ramp monotonically from 0 to 5 V in less than 100 ms.
The 84-PLCC J-lead package supports both socketed (through-hole PLCC-84 socket) and direct surface-mount assembly. For prototype builds, use a quality machined-pin socket (e.g., 3M Textool or equivalent) to allow quick bitstream swaps. For production, the J-leads are solderable using standard reflow profiles up to 240°C peak for 60 seconds maximum. Maintain at least 6 mil trace/space on outer layers and route the high-current VCCINT/VCCIO pins with 20 mil or wider copper pours to limit DC drop across the lead frame.
Three pitfalls are common in FLEX 8000 designs: (1) omitting a non-volatile configuration memory — SRAM FPGAs lose their bitstream at every power-down, so an EPC1, EPC1064, EPC1213, or EPC1441 (or parallel EPROM) is mandatory; (2) leaving MSEL[2:0] floating — these mode-select pins must be tied to a defined logic level matching the configuration source; (3) using the EPF8452 for designs requiring more than 336 LEs without verifying Quartus fit — early FLEX 8000 synthesis libraries did not always report exact LE utilization. Always confirm placement and routing closure in Quartus before committing to layout.
Информация о соответствии
Compliance status not explicitly stated in verified web data. The '-4N' suffix variants are commonly lead-free finished; the bare '-4' suffix historically indicates SnPb finish. Confirm with manufacturer or distributor documentation before procurement for RoHS-restricted programs.