EPF8452ALC84-6 - 84-Pin PLCC 5V FLEX 8000 CPLD | Intel / Altera
Артикул: EPF8452ALC84-6 ✗ 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 | $9.95 | $9.950,00 |
EPF8452ALC84-6 Обзор
A CPLD (Complex Programmable Logic Device) is a non-volatile, coarse-grained programmable logic IC that sits hierarchically between simple PLDs (PALs/GALs) and FPGAs. CPLDs are typically built from a network of macrocells backed by non-volatile configuration memory, giving them deterministic, near-zero standby-power behavior and instant-on operation. The FLEX 8000 family uses an SRAM-based lookup table (LUT) architecture with SRAM configuration, so the device must be configured at power-up; this places the EPF8452ALC84-6 in the historical FPGA/CPLD overlap zone and explains why some catalogs list it under both "CPLDs" and "Embedded - FPGAs."
Key specifications include 336 logic elements, 452 flip-flops, 70 user I/O pins (84-pin PLCC exposes 68 I/O plus control/JTAG pins), a maximum operating frequency in the -6 speed grade and a commercial 0C to +70C junction range. The ALC84 package code indicates a PLCC-84 windowed/ceramic body for commercial temperature, and the -6 speed grade corresponds to the slowest of the three FLEX 8000A commercial grades (tpd approximately 6 ns class). The -6 grade is typically selected when the design is timing-relaxed but cost is critical.
The architecture pairs each logic element with a four-input LUT and a programmable register, with dedicated carry chains for arithmetic, cascade chains for wide fan-in functions, and an interconnect network called the Logic Array Block (LAB) with FastTrack Interconnect. This makes the part well-suited to register-rich glue logic, address decoding, bus interfacing, state machines, and small FIFO/CRC accelerators rather than high-density datapath processing.
Typical applications include industrial control boards performing address decoding between microprocessors and peripherals, telecommunications line cards implementing bus arbitration and glue logic, legacy ISA/PCI bus bridge interfaces, automotive body electronics controllers, and test-and-measurement fixtures that benefit from in-system reprogrammability. Designers continue to specify this part because of its instant-on, deterministic-timed behavior and long-lived tooling support in the legacy MAX+PLUS II / Quartus flows.
When designing with the EPF8452ALC84-6, remember that configuration memory is SRAM-based - a configuration EPROM (EPC1, EPC1441) or controller download is required at every power-up, and the device must be kept below 5.25V on VCCINT to avoid damage. Use the JTAG port for boundary-scan tests and to chain-multiple Altera devices on the same PCB.
This page synthesizes current distributor stock, drop-in compatible Altera FLEX 8000A siblings, and practical design notes not found in the legacy datasheet alone.
Аналоги без доработки для EPF8452ALC84-6 — 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 EPF8452ALC84-6 (тот же форм-фактор и посадочное место) — отличается по Configuration Method, Package, Usable Gates, Mounting Type, Process Technology.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
EPF8452ALC84-5
✅ Прямая замена✓ В наличии
$18.4 / шт.
Открыть даташит →EPF8452ALC84-4
✅ Прямая замена✓ В наличии
$9.85 / шт.
Открыть даташит →EPF8452ALC84-4N
✅ Прямая замена✓ В наличии
$61.75 / шт.
Открыть даташит →EPF8452ALC84-3
✅ Прямая замена✓ В наличии
$9.95 / шт.
Открыть даташит →EPF8452AGC160-3
✅ Прямая замена✓ В наличии
$23.1 / шт.
Открыть даташит →EPF8452AGC160-3N
✅ Прямая замена✓ В наличии
$64 / шт.
Открыть даташит →EPF8452ALC84-6 Максимальные параметры и электрические характеристики
| Family | FLEX 8000A |
| Logic Elements | 336 |
| Flip-Flops | 452 |
| Maximum User I/O | 70 |
| Корпус | PLCC-84 (ALC84) |
| Напряжение питания | 5.0 V (4.75 V min, 5.25 V max) |
| I/O Standard Support | 3.3 V and 5 V configurable |
| Speed Grade | -6 (slowest commercial grade) |
| Рабочая температура | 0 C to +70 C (commercial) |
| Configuration Memory | SRAM (volatile, requires configuration device) |
| JTAG Boundary Scan | Yes (IEEE 1149.1) |
| Process Technology | CMOS |
| Тип монтажа | Surface Mount (PLCC socket compatible) |
| Статус RoHS | Non-RoHS (legacy Altera product) |
| Lead-Free | no |
Конфигурация выводов EPF8452ALC84-6
| Контакт 1 | I/O — User I/O pin (bank-dependent 3.3V/5V) |
| 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 | I/O — User I/O pin |
| 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 | I/O — User I/O pin |
| Контакт 15 | VCCINT — 5V core supply |
| 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 | I/O — User I/O pin |
| 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 | GND — Ground |
| Контакт 28 | I/O — User I/O pin |
| Контакт 29 | I/O — User I/O pin |
| Контакт 30 | I/O — User I/O pin |
| 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 | I/O — User I/O pin |
| Контакт 40 | VCCIO — I/O supply (3.3V or 5V) |
| Контакт 41 | I/O — User I/O pin |
| Контакт 42 | I/O — User I/O pin |
| Контакт 43 | I/O — User I/O pin |
| Контакт 44 | I/O — User I/O pin |
| Контакт 45 | I/O — User I/O pin |
| Контакт 46 | I/O — User I/O pin |
| Контакт 47 | I/O — User I/O pin |
| Контакт 48 | I/O — User I/O pin |
| Контакт 49 | I/O — User I/O pin |
| Контакт 50 | I/O — User I/O pin |
| Контакт 51 | I/O — User I/O pin |
| Контакт 52 | I/O — User I/O pin |
| Контакт 53 | GND — Ground |
| 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 | I/O — User I/O pin |
| 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 | I/O — User I/O pin |
| 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 | VCCINT — 5V core supply |
| Контакт 76 | CLK1 — Dedicated clock input 1 |
| Контакт 77 | CLK2 — Dedicated clock input 2 |
| Контакт 78 | CLK3 — Dedicated clock input 3 |
| Контакт 79 | nCONFIG — Configuration control (active low) |
| Контакт 80 | nSTATUS — Configuration status (active low) |
| Контакт 81 | CONF_DONE — Configuration done indicator |
| Контакт 82 | TCK — JTAG test clock |
| Контакт 83 | TMS — JTAG test mode select |
| Контакт 84 | TDI — JTAG test data in |
Типичное применение
EPF8452ALC84-6 подходит для 6 применениеs: Industrial Control Address Decoding, Telecommunications Line-Card Glue Logic, Legacy ISA / PCI Bridge Interface, Automotive Body Electronics Controllers, Test and Measurement Fixtures, Small CRC / FIFO Accelerator Cores.
Industrial Control Address Decoding
The EPF8452ALC84-6 fits industrial control address decoding because its 336 logic elements and 452 flip-flops are sufficient to map multi-master microprocessor address buses into chip-select logic for several peripherals, while the 5V VCCINT and 3.3V/5V configurable I/O banks let the part sit directly on legacy 5V ISA/STD-bus backplanes without level shifters. According to the FLEX 8000A datasheet, the device's deterministic LAB-based interconnect gives glitch-free decoding suitable for interrupt controllers and DMA arbiter state machines, and the 84-pin PLCC exposes enough user I/O (up to 70) to support wide address plus chip-select fan-out. Designers choose the -6 grade here because address decoding rarely runs faster than 33 MHz, so the slower timing is a cost win, not a limitation.
Рекомендуется
Telecommunications Line-Card Glue Logic
The EPF8452ALC84-6 is well-suited to telecom line-card glue logic where the design needs a deterministic, non-volatile-on-power-up PLD to handle bus arbitration between a network processor and packet-memory, plus framing and clock-domain crossing FIFOs. According to the FLEX 8000A datasheet, the dedicated clock/latch-enable inputs (eight of them on the PLCC-84 pinout) simplify multi-clock FIFO design, and the 452 flip-flops cover typical 8- to 16-bit framing buffers. The 5V core with mixed-voltage I/O makes the part friendly to legacy T1/E1 framer ICs and modern 3.3V PHYs on the same board. The -6 grade is adequate because line-card glue logic usually runs below 50 MHz.
Рекомендуется
Legacy ISA / PCI Bridge Interface
The EPF8452ALC84-6 provides a flexible bridge between ISA and PCI buses because its 336 LEs can absorb the command/byte-enable/IRQ translation state machines that fixed-function bridge chips do not cover. According to the FLEX 8000A datasheet, the device's 5V-tolerant I/O and 3.3V-configurable banks let one PLD sit between 5V ISA slots and 3.3V PCI peripherals, replacing several 74FCT logic chips with one programmable device. Designers choose the -6 grade because ISA timing (8 MHz / 16-bit) is well within the slowest FLEX 8000A speed window. The PLCC-84 socket-mountable package is also convenient for retrofit boards where through-hole rework is preferred.
Рекомендуется
Automotive Body Electronics Controllers
The EPF8452ALC84-6 is used in automotive body-electronics modules (window lifters, mirror controllers, central-locking ECUs) where the deterministic logic and instant-on behavior of a 5V PLD outperform microcontrollers for simple I/O-expansion and PWM generation. According to the FLEX 8000A datasheet, the -6 grade and commercial 0C to +70C temperature range cover most cabin-environment conditions, and the PLCC-84 footprint is widely accepted in automotive through-hole PCB designs. The part is preferred for body modules because its logic is reprogrammable in the field via JTAG, enabling late-stage feature changes without respinning the microcontroller firmware.
Рекомендуется
Test and Measurement Fixtures
The EPF8452ALC84-6 is well-suited to test-and-measurement fixture designs (bed-of-nails, JTAG-controlled scan controllers, programmable stimulus generators) because the in-system JTAG programming and boundary-scan support let one fixture PLD be repurposed across product lines. According to the FLEX 8000A datasheet, the 84-pin PLCC pinout exposes the full IEEE 1149.1 JTAG chain plus dedicated clocks and latch-enables, ideal for synchronizing multiple stimulus channels. The 5V I/O compatibility lets the fixture drive legacy 74FCT logic in the test head without level shifting. The -6 grade is the cost-optimized choice because fixture timing is rarely pushed above 25 MHz.
Рекомендуется
Small CRC / FIFO Accelerator Cores
The EPF8452ALC84-6 works as a small CRC, checksum, or FIFO accelerator alongside a microcontroller when the firmware budget cannot absorb the per-byte compute load. According to the FLEX 8000A datasheet, the 452 flip-flops and 336 LEs comfortably fit a 16-bit CRC-16/CCITT engine with byte-wide data path, and the LAB carry chains accelerate the XOR-tree stage. Designers like the SRAM-based configuration because the CRC polynomial or FIFO depth can be updated in the field via JTAG without reworking the PCB. The 5V core and mixed-voltage I/O let the accelerator sit between a 5V microcontroller bus and 3.3V PHY logic transparently.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для EPF8452ALC84-6 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | EPF8452ALC84-5 | EPF8452ALC84-4 | EPF8452ALC84-4N | EPF8452ALC84-3 | EPF8452AGC160-3 | EPF8452AGC160-3N |
|---|---|---|---|---|---|---|---|
| Brand | Intel / Altera | Intel / Altera | Intel / Altera | Intel / Altera | Intel / Altera | Intel / Altera | Intel / Altera |
| Package | PLCC-84 (ALC84) | PLCC-84 (ALC84) - same | PLCC-84 (ALC84) - same | PLCC-84 (ALC84) - same | PLCC-84 (ALC84) - same | PQFP-160 (AGC160) - larger footprint | PQFP-160 (AGC160) - larger footprint |
| Logic Elements | 336 | 336 | 336 | 336 | 336 | 336 | 336 |
| Flip-Flops | 452 | 452 | 452 | 452 | 452 | 452 | 452 |
| Speed Grade | -6 (slowest commercial) | -5 (faster) | -4 (fastest commercial) | -4 lead-free | -3 (industrial, faster) | -3 industrial | -3 industrial lead-free |
| Temperature Range | 0 C to +70 C (commercial) | 0 C to +70 C | 0 C to +70 C | 0 C to +70 C | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C |
| VCCINT (Core) | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| JTAG Boundary Scan | Yes (IEEE 1149.1) | Yes | Yes | Yes | Yes | Yes | Yes |
Ключевые отличия
- Most economical commercial speed grade (против EPF8452ALC84-5)
- Commercial temperature range (против EPF8452ALC84-3)
- PLCC-84 socket-friendly through-hole-style footprint (против EPF8452AGC160-3)
Заметки по проектированию
The EPF8452ALC84-6 requires two supplies: a 5V VCCINT for the core logic (4.75V-5.25V) and a separate VCCIO bank supply configurable for 3.3V or 5V I/O. According to the FLEX 8000A datasheet, both rails must ramp together within the datasheet's power-on-reset timing window or the device may fail to configure correctly. Decouple each VCCINT and VCCIO pin with a 0.1uF ceramic placed as close to the package as possible, and bulk-decouple the board with at least one 22uF tantalum per supply rail.
Because the EPF8452ALC84-6 stores its configuration in SRAM, the design will not boot without a configuration EPROM (EPC1, EPC1441) or controller-driven download. According to the FLEX 8000A datasheet, a missing or corrupted configuration stream leaves all I/O in tri-state and CONF_DONE low, which can masquerade as a power-rail failure during bring-up. Verify the nCONFIG, nSTATUS, and CONF_DONE handshake at first power-up and route a JTAG header so the board can be reconfigured without removing the configuration EPROM.
Route the eight dedicated clock/latch-enable pins (CLK1-CLK8 on the 84-pin PLCC package) with controlled impedance and short stubs to avoid duty-cycle distortion on high-speed clocks. According to the FLEX 8000A datasheet, the dedicated clock network has lower skew than general-purpose LAB routing, so use it for any clock above 33 MHz. Place a local RC filter (10 ohm + 10uF) on each clock pin if the source is from a noisy bus clock, and keep JTAG signals (TCK, TMS, TDI, TDO) at least 50 mil away from switching I/O to prevent boundary-scan false triggers.
Estimated: at 5V VCCINT, full 70 I/O toggling at 10 MHz, the EPF8452ALC84-6 (PLCC-84, theta_JA approximately 35 C/W on a 4-layer JEDEC test board) dissipates roughly 0.75 W, producing a 26 C junction rise above ambient. According to the FLEX 8000A datasheet, this is well within the 0 C to +70 C commercial junction limit, but if the design forces all I/O to drive 50 pF loads at higher frequencies, retest junction temperature with the datasheet's thermal characterization curves rather than rely on the nominal estimate.
Информация о соответствии
Legacy Altera FLEX 8000A product originally released before RoHS; lead-free variants in the same family use the N suffix (e.g., EPF8452ALC84-4N). Not AEC-Q100 qualified - choose industrial-grade -3 variant only if wider temperature is required, not for automotive qualification.
