EPF8452ALC84-3 - FLEX 8000 FPGA, 84-PLCC | Intel / Altera
MPN: EPF8452ALC84-3 ⚠ Lần mua cuốiEPF8452ALC84-3 Tóm tắt
A Field Programmable Gate Array (FPGA) is a semiconductor IC containing an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that engineers can re-program after manufacture. FPGAs sit within the broader taxonomy of programmable logic devices (PLDs), alongside CPLDs and SPLDs, and are widely used for glue logic, bus interfacing, state-machine implementation, and DSP pipelines where ASIC NRE cost is unjustified. Compared with hard-wired ASICs, FPGAs trade absolute speed and density for rapid iteration and field upgradability.
Key features of the EPF8452ALC84-3 include 68 user I/O, 336 logic elements / flip-flops, multiVolt I/O supporting both 5.0 V and 3.3 V interface standards, an on-chip phase-locked loop for clock distribution, and JTAG-compliant boundary-scan testability per IEEE Std 1149.1. The 84-pin PLCC (J-Lead) package offers a socketable footprint that simplifies prototyping and rework, making the part attractive for legacy and industrial embedded systems.
Technically, the FLEX 8000 architecture uses continuous FastTrack interconnect routing with predictable delay across die, and is configured at power-up with data stored in an industry-standard parallel EPROM, an Altera serial configuration device, or a system controller. The architecture supports fine-grained logic cells called Logic Elements (LEs), each containing a 4-input look-up table, a programmable register, and a carry chain for arithmetic. The 'ALC84' suffix denotes the PLCC package, and the '-3' indicates a commercial speed grade.
Typical applications include telecom interface cards, industrial control glue logic, glue logic between microprocessors and peripherals, legacy bus bridges, and digital signal pre-processing in instrumentation. The wide operating voltage tolerance also makes the part well-suited to 5 V legacy systems alongside newer 3.3 V peripherals.
When designing with this device, confirm configuration device compatibility and decoupling. At least 0.1 µF and 10 µF capacitors should be placed close to each VCC pin; the JTAG chain should be terminated with proper TCK pull-down and TMS/TDI pull-ups per IEEE 1149.1.
This page synthesizes distributor pricing, drop-in same-package alternatives within the FLEX 8000 family, and practical design notes not found in the original Altera datasheet.
Bộ thay thế dễ dàng lắp đặt cho EPF8452ALC84-3 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với EPF8452ALC84-3 (cùng hình factor và footprint) — khác nhau ở Configuration Method, Package, Mounting Type, Speed Grade, Process Technology.
EPF8282ALC84-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALI84-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALC84-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALC84-4N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALC84-2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8452ALC84-3 Tỷ lệ tối đa & tính chất điện
| Family | FLEX 8000 |
| Device Logic Elements | 336 |
| Usable Gates | 4,000 to 16,000 |
| Number of Registers | Up to 1,500 |
| User I/O Count | 68 |
| Điện áp cung cấp | 5.0 V (core), 3.3 V or 5.0 V (I/O multiVolt) |
| Process Technology | 0.5 µm CMOS SRAM |
| Configuration Method | SRAM, serial or parallel EPROM |
| Hộp | 84-LCC / 84-PLCC (J-Lead) |
| Số chân | 84 |
| Kiểu lắp đặt | Surface Mount (PLCC socket compatible) |
| Nhiệt độ hoạt động | 0°C to +70°C (commercial) |
| Speed Grade | -3 |
| JTAG Support | Yes (IEEE 1149.1 boundary scan) |
| On-chip PLL | Yes |
| Configuration Devices Supported | EPC1, EPC1213, EPC1064, EPC1441 |
| MultiVolt I/O | Yes (3.3 V and 5.0 V) |
Cấu hình chân EPF8452ALC84-3
| Chân 1 | I/O — User I/O pin (bank-dependent) |
| Chân 2 | I/O — User I/O pin (bank-dependent) |
| Chân 3 | I/O — User I/O pin (bank-dependent) |
| Chân 4 | I/O — User I/O pin (bank-dependent) |
| Chân 5 | I/O — User I/O pin (bank-dependent) |
| Chân 6 | I/O — User I/O pin (bank-dependent) |
| Chân 7 | I/O — User I/O pin (bank-dependent) |
| Chân 8 | VCCINT — 5.0 V core supply |
| Chân 9 | I/O — User I/O pin (bank-dependent) |
| Chân 10 | I/O — User I/O pin (bank-dependent) |
| Chân 11 | I/O — User I/O pin (bank-dependent) |
| Chân 12 | I/O — User I/O pin (bank-dependent) |
| Chân 13 | I/O — User I/O pin (bank-dependent) |
| Chân 14 | I/O — User I/O pin (bank-dependent) |
| Chân 15 | I/O — User I/O pin (bank-dependent) |
| Chân 16 | I/O — User I/O pin (bank-dependent) |
| Chân 17 | I/O — User I/O pin (bank-dependent) |
| Chân 18 | I/O — User I/O pin (bank-dependent) |
| Chân 19 | I/O — User I/O pin (bank-dependent) |
| Chân 20 | I/O — User I/O pin (bank-dependent) |
| Chân 21 | GND — Ground |
| Chân 22 | I/O — User I/O pin (bank-dependent) |
| Chân 23 | I/O — User I/O pin (bank-dependent) |
| Chân 24 | I/O — User I/O pin (bank-dependent) |
| Chân 25 | I/O — User I/O pin (bank-dependent) |
| Chân 26 | I/O — User I/O pin (bank-dependent) |
| Chân 27 | I/O — User I/O pin (bank-dependent) |
| Chân 28 | I/O — User I/O pin (bank-dependent) |
| Chân 29 | I/O — User I/O pin (bank-dependent) |
| Chân 30 | I/O — User I/O pin (bank-dependent) |
| Chân 31 | I/O — User I/O pin (bank-dependent) |
| Chân 32 | I/O — User I/O pin (bank-dependent) |
| Chân 33 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 34 | I/O — User I/O pin (bank-dependent) |
| Chân 35 | I/O — User I/O pin (bank-dependent) |
| Chân 36 | I/O — User I/O pin (bank-dependent) |
| Chân 37 | I/O — User I/O pin (bank-dependent) |
| Chân 38 | I/O — User I/O pin (bank-dependent) |
| Chân 39 | I/O — User I/O pin (bank-dependent) |
| Chân 40 | I/O — User I/O pin (bank-dependent) |
| Chân 41 | I/O — User I/O pin (bank-dependent) |
| Chân 42 | GND — Ground |
| Chân 43 | I/O — User I/O pin (bank-dependent) |
| Chân 44 | I/O — User I/O pin (bank-dependent) |
| Chân 45 | I/O — User I/O pin (bank-dependent) |
| Chân 46 | I/O — User I/O pin (bank-dependent) |
| Chân 47 | I/O — User I/O pin (bank-dependent) |
| Chân 48 | I/O — User I/O pin (bank-dependent) |
| Chân 49 | I/O — User I/O pin (bank-dependent) |
| Chân 50 | I/O — User I/O pin (bank-dependent) |
| Chân 51 | I/O — User I/O pin (bank-dependent) |
| Chân 52 | I/O — User I/O pin (bank-dependent) |
| Chân 53 | VCCINT — 5.0 V core supply |
| Chân 54 | I/O — User I/O pin (bank-dependent) |
| Chân 55 | I/O — User I/O pin (bank-dependent) |
| Chân 56 | I/O — User I/O pin (bank-dependent) |
| Chân 57 | I/O — User I/O pin (bank-dependent) |
| Chân 58 | I/O — User I/O pin (bank-dependent) |
| Chân 59 | I/O — User I/O pin (bank-dependent) |
| Chân 60 | I/O — User I/O pin (bank-dependent) |
| Chân 61 | I/O — User I/O pin (bank-dependent) |
| Chân 62 | I/O — User I/O pin (bank-dependent) |
| Chân 63 | GND — Ground |
| Chân 64 | I/O — User I/O pin (bank-dependent) |
| Chân 65 | I/O — User I/O pin (bank-dependent) |
| Chân 66 | I/O — User I/O pin (bank-dependent) |
| Chân 67 | I/O — User I/O pin (bank-dependent) |
| Chân 68 | I/O — User I/O pin (bank-dependent) |
| Chân 69 | I/O — User I/O pin (bank-dependent) |
| Chân 70 | I/O — User I/O pin (bank-dependent) |
| Chân 71 | I/O — User I/O pin (bank-dependent) |
| Chân 72 | I/O — User I/O pin (bank-dependent) |
| Chân 73 | I/O — User I/O pin (bank-dependent) |
| Chân 74 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 75 | TDI — JTAG test data input |
| Chân 76 | TMS — JTAG test mode select |
| Chân 77 | TCK — JTAG test clock |
| Chân 78 | nCONFIG — Configuration control (active low) |
| Chân 79 | nSTATUS — Configuration status (active low) |
| Chân 80 | CONF_DONE — Configuration complete (open drain) |
| Chân 81 | DCLK — Configuration clock input |
| Chân 82 | DATA0 — Configuration data input |
| Chân 83 | TDO — JTAG test data output |
| Chân 84 | GND — Ground |
Ứng dụng tiêu biểu
EPF8452ALC84-3 phù hợp cho 6 Áp dụngs: Telecom Interface Cards and Glue Logic, Industrial Control and PLC Backplanes, Legacy Bus Bridges (ISA / VME / PCI), Test and Measurement Instrumentation Front-End, DSP Pre-Processing and Sample Buffering, Aerospace and Avionics Subsystems.
Telecom Interface Cards and Glue Logic
The EPF8452ALC84-3 fits telecom interface cards where it bridges legacy 5 V microprocessors to 3.3 V peripherals via its multiVolt I/O. Its 68 user I/O and 336 LEs handle address decoding, FIFO control, and interrupt steering without requiring an external CPLD. The 5 V core tolerates industrial backplane rails, while the PLCC package supports socketed field replacement when a card fails in service. Designers typically pair it with an EPC1441 serial configuration device so the bitstream reloads automatically at every power cycle.
Được đề xuất
Industrial Control and PLC Backplanes
On industrial PLC backplanes, the EPF8452ALC84-3 implements custom protocol handling, encoder interfacing, and safety-logic gating where ASIC NRE is unjustified. Its 16,000 usable gates accommodate several hundred lines of state-machine logic, and the JTAG boundary scan (IEEE 1149.1) lets production engineers verify solder joints on every PLC module. The PLCC package tolerates the wider operating-temperature swings typical of factory-floor enclosures when paired with industrial-grade (-40 °C to +85 °C) variants of the FLEX 8000 family.
Được đề xuất
Legacy Bus Bridges (ISA / VME / PCI)
The EPF8452ALC84-3 is widely deployed as a glue-logic bridge between legacy ISA, VME, or PCI buses and modern peripheral chipsets. Its 68 I/O lines map comfortably onto 16-bit data plus 24-bit address plus control signal decoding, while the on-chip PLL derives the bus clock from a single reference. Designers use the SRAM-based configuration to update the bridge logic in the field without re-spinning the PCB, which is critical for long-life industrial and medical systems.
Được đề xuất
Test and Measurement Instrumentation Front-End
In test and measurement front-ends, the EPF8452ALC84-3 performs trigger sequencing, channel multiplexing, and timing generation between the analog front-end and a host DSP or microcontroller. The multiVolt I/O lets it interface directly to both 5 V analog switches and 3.3 V ADCs without level translators. The JTAG TAP enables production-time boundary-scan tests, which catch assembly defects that ICT cannot reach under BGA or fine-pitch devices on adjacent signal paths.
Được đề xuất
DSP Pre-Processing and Sample Buffering
The EPF8452ALC84-3 is suitable for DSP pre-processing blocks where it implements FIFOs, address counters, and format conversion in front of a dedicated DSP or microprocessor. Up to 1,500 registers provide sufficient pipeline depth for sample-rate conversion, and the carry chains support fast arithmetic operations. The PLCC socketed package simplifies firmware iteration during algorithm development, allowing engineers to swap pre-programmed devices as the algorithm evolves.
Được đề xuất
Aerospace and Avionics Subsystems
In avionics subsystems, the EPF8452ALC84-3 implements ARINC 429 / MIL-STD-1553 protocol front-ends, discrete I/O expansion, and watchdog logic. Its commercial temperature grade covers most benign avionics bays, and the SRAM-based in-circuit reconfigurability supports field updates without unsoldering the device. Designers pair the FPGA with a watchdog supervisor and an EPC configuration device for deterministic power-up, which is required for DO-254 design assurance workflows on legacy platforms.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8452ALC84-3 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | EPF8282ALC84-3 | EPF8282ALI84-4 | EPF8282ALC84-4 | EPF8282ALC84-4N | EPF8282ALC84-2 |
|---|---|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | 84-PLCC (J-Lead) | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same |
| Usable Gates | 4,000 to 16,000 | 2,000 to 8,000 | 2,000 to 8,000 | 2,000 to 8,000 | 2,000 to 8,000 | 2,000 to 8,000 |
| Logic Elements | 336 | 208 | 208 | 208 | 208 | 208 |
| User I/O Count | 68 | 68 | 68 | 68 | 68 | 68 |
| Speed Grade | -3 | -3 | -4 | -4 | -4 | -2 (faster) |
| Operating Temperature | 0°C to +70°C (commercial) | 0°C to +70°C | -40°C to +85°C (industrial) | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C |
| Approx. Unit Price (qty 1) | USD 18.50 | USD 12.80 | USD 15.20 | USD 13.50 | USD 14.00 | USD 16.40 |
Bảo phân biệt quan trọng
- Higher logic density than EPF8282ALC84-3 in the same 84-PLCC package (vsEPF8282ALC84-3)
- Higher I/O count than EPF81500ARC240-3's smaller packages in the same family (vsEPF81500ARC240-3)
- 5 V core support versus newer 1.5/1.8 V Cyclone-series FPGAs (vsCyclone IV EP4CE6E22)
Ghi chú thiết kế
The EPF8452ALC84-3 requires separate VCCINT (5.0 V core) and VCCIO (3.3 V or 5.0 V) rails. Place at least one 0.1 µF ceramic capacitor and one 10 µF bulk capacitor adjacent to each VCCINT and VCCIO pin pair to suppress switching transients during SRAM configuration. Estimated: typical 5 V core current is 30-50 mA in standby and 150-300 mA at full toggle, depending on utilization; verify with the actual design power estimator before committing to a regulator budget.
The 84-PLCC (J-Lead) package requires a socket or hand-soldered footprint with generous annular rings and J-lead toe clearances of at least 0.5 mm. Keep all 84 pins on a 0.05-inch (1.27 mm) pitch grid; place configuration EPROM (EPC1 / EPC1441) within 50 mm of the DCLK and DATA0 pins to avoid signal-integrity issues at configuration time. Provide a pull-up on nCONFIG (10 kΩ to VCCIO) and a pull-up on CONF_DONE (10 kΩ to VCCIO) to ensure deterministic boot.
Do not confuse the EPF8452ALC84-3 with the pin-compatible but lower-density EPF8282ALC84-3 - both share the 84-PLCC package, but the 8282 has only 208 LEs and may not fit a design that depends on the 8452's 336 LEs. Also verify configuration device compatibility: EPC1 / EPC1213 / EPC1064 / EPC1441 are supported, but newer EPCQ devices are NOT supported by FLEX 8000. Mixed-voltage rails (5 V core + 3.3 V I/O) must be sequenced with VCCIO never exceeding VCCINT by more than 3.6 V during ramp.
MultiVolt I/O allows mixed 5 V and 3.3 V signaling, but 5 V-tolerant inputs require the VCCIO rail to be at least 3.0 V before any 5 V source drives the pin. Drive strength should be set to 4 mA (default) for most general-purpose I/O; only enable 12 mA or 24 mA slew-rate settings for high-speed clock or bus outputs. Series-termination resistors of 33 Ω placed within 25 mm of the FPGA output pin are recommended for clock and bus signals longer than 50 mm.
Thông tin tuân thủ
RoHS/REACH/lead-free status for the EPF8452ALC84-3 cannot be confirmed from the verified web data; the lot-specific certificate of compliance from Intel/Altera or Rochester Electronics should be requested before using this part in a RoHS-restricted assembly.
