EPF8452ALC84-6 - 84-Pin PLCC 5V FLEX 8000 CPLD | Intel / Altera
N.º da peça: EPF8452ALC84-6 ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para EPF8452ALC84-6 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com EPF8452ALC84-6 (mesmo formato e footprint) — diferindo em Configuration Method, Package, Usable Gates, Mounting Type, Process Technology.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPF8452ALC84-5
✅ Drop-In✓ Em estoque
$18.4 / unidade
Ver ficha técnica →EPF8452ALC84-4
✅ Drop-In✓ Em estoque
$9.85 / unidade
Ver ficha técnica →EPF8452ALC84-4N
✅ Drop-In✓ Em estoque
$61.75 / unidade
Ver ficha técnica →EPF8452ALC84-3
✅ Drop-In✓ Em estoque
$9.95 / unidade
Ver ficha técnica →EPF8452AGC160-3
✅ Drop-In✓ Em estoque
$23.1 / unidade
Ver ficha técnica →EPF8452AGC160-3N
✅ Drop-In✓ Em estoque
$64 / unidade
Ver ficha técnica →EPF8452ALC84-6 Classificações máximas e características elétricas
| Family | FLEX 8000A |
| Logic Elements | 336 |
| Flip-Flops | 452 |
| Maximum User I/O | 70 |
| Encapsulamento | PLCC-84 (ALC84) |
| Tensão de alimentação | 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) |
| Temperatura de operação | 0 C to +70 C (commercial) |
| Configuration Memory | SRAM (volatile, requires configuration device) |
| JTAG Boundary Scan | Yes (IEEE 1149.1) |
| Process Technology | CMOS |
| Tipo de montagem | Surface Mount (PLCC socket compatible) |
| Status RoHS | Non-RoHS (legacy Altera product) |
| Lead-Free | no |
Configuração de pinos do EPF8452ALC84-6
| Pino 1 | I/O — User I/O pin (bank-dependent 3.3V/5V) |
| Pino 2 | I/O — User I/O pin |
| Pino 3 | I/O — User I/O pin |
| Pino 4 | I/O — User I/O pin |
| Pino 5 | I/O — User I/O pin |
| Pino 6 | I/O — User I/O pin |
| Pino 7 | I/O — User I/O pin |
| Pino 8 | I/O — User I/O pin |
| Pino 9 | I/O — User I/O pin |
| Pino 10 | I/O — User I/O pin |
| Pino 11 | I/O — User I/O pin |
| Pino 12 | I/O — User I/O pin |
| Pino 13 | I/O — User I/O pin |
| Pino 14 | I/O — User I/O pin |
| Pino 15 | VCCINT — 5V core supply |
| Pino 16 | I/O — User I/O pin |
| Pino 17 | I/O — User I/O pin |
| Pino 18 | I/O — User I/O pin |
| Pino 19 | I/O — User I/O pin |
| Pino 20 | I/O — User I/O pin |
| Pino 21 | I/O — User I/O pin |
| Pino 22 | I/O — User I/O pin |
| Pino 23 | I/O — User I/O pin |
| Pino 24 | I/O — User I/O pin |
| Pino 25 | I/O — User I/O pin |
| Pino 26 | I/O — User I/O pin |
| Pino 27 | GND — Ground |
| Pino 28 | I/O — User I/O pin |
| Pino 29 | I/O — User I/O pin |
| Pino 30 | I/O — User I/O pin |
| Pino 31 | I/O — User I/O pin |
| Pino 32 | I/O — User I/O pin |
| Pino 33 | I/O — User I/O pin |
| Pino 34 | I/O — User I/O pin |
| Pino 35 | I/O — User I/O pin |
| Pino 36 | I/O — User I/O pin |
| Pino 37 | I/O — User I/O pin |
| Pino 38 | I/O — User I/O pin |
| Pino 39 | I/O — User I/O pin |
| Pino 40 | VCCIO — I/O supply (3.3V or 5V) |
| Pino 41 | I/O — User I/O pin |
| Pino 42 | I/O — User I/O pin |
| Pino 43 | I/O — User I/O pin |
| Pino 44 | I/O — User I/O pin |
| Pino 45 | I/O — User I/O pin |
| Pino 46 | I/O — User I/O pin |
| Pino 47 | I/O — User I/O pin |
| Pino 48 | I/O — User I/O pin |
| Pino 49 | I/O — User I/O pin |
| Pino 50 | I/O — User I/O pin |
| Pino 51 | I/O — User I/O pin |
| Pino 52 | I/O — User I/O pin |
| Pino 53 | GND — Ground |
| Pino 54 | I/O — User I/O pin |
| Pino 55 | I/O — User I/O pin |
| Pino 56 | I/O — User I/O pin |
| Pino 57 | I/O — User I/O pin |
| Pino 58 | I/O — User I/O pin |
| Pino 59 | I/O — User I/O pin |
| Pino 60 | I/O — User I/O pin |
| Pino 61 | I/O — User I/O pin |
| Pino 62 | I/O — User I/O pin |
| Pino 63 | I/O — User I/O pin |
| Pino 64 | I/O — User I/O pin |
| Pino 65 | I/O — User I/O pin |
| Pino 66 | I/O — User I/O pin |
| Pino 67 | I/O — User I/O pin |
| Pino 68 | I/O — User I/O pin |
| Pino 69 | I/O — User I/O pin |
| Pino 70 | I/O — User I/O pin |
| Pino 71 | I/O — User I/O pin |
| Pino 72 | I/O — User I/O pin |
| Pino 73 | I/O — User I/O pin |
| Pino 74 | I/O — User I/O pin |
| Pino 75 | VCCINT — 5V core supply |
| Pino 76 | CLK1 — Dedicated clock input 1 |
| Pino 77 | CLK2 — Dedicated clock input 2 |
| Pino 78 | CLK3 — Dedicated clock input 3 |
| Pino 79 | nCONFIG — Configuration control (active low) |
| Pino 80 | nSTATUS — Configuration status (active low) |
| Pino 81 | CONF_DONE — Configuration done indicator |
| Pino 82 | TCK — JTAG test clock |
| Pino 83 | TMS — JTAG test mode select |
| Pino 84 | TDI — JTAG test data in |
Aplicações típicas
EPF8452ALC84-6 é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPF8452ALC84-6 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Most economical commercial speed grade (vs EPF8452ALC84-5)
- Commercial temperature range (vs EPF8452ALC84-3)
- PLCC-84 socket-friendly through-hole-style footprint (vs EPF8452AGC160-3)
Notas de projeto
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.
Informações de conformidade
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.
