EPF8282ALC84-4N - FLEX 8000 FPGA 2.5K Gates 84-LCC | Intel / Altera
MPN: EPF8282ALC84-4N ✗ Cuối đờiEPF8282ALC84-4N Tóm tắt
A Field-Programmable Gate Array (FPGA) is a type of integrated circuit that can be configured by the customer after manufacturing to implement arbitrary digital logic. In the broader taxonomy, the EPF8282ALC84-4N sits within programmable logic devices (PLDs) -> CPLD/FPGA hybrid (FLEX 8000 is architecturally an FPGA) -> SRAM-based FPGA -> general-purpose programmable logic -> semiconductor. The FLEX 8000 family was one of Altera's early high-density register-rich FPGA lines, fully compliant with the PCI Local Bus Specification for plug-and-play peripheral designs.
Key features include 5.0V VCCIO operation with selectable 3.3V or 5.0V output levels, in-circuit reconfigurability (ICR) via serial configuration devices (EPC1, EPC1064, EPC1213, EPC1441), and built-in JTAG boundary-scan test (IEEE 1149.1). The 0.42 µm CMOS SRAM process provides high integration while the 84-pin LCC (J-Lead) package supports surface-mount assembly with excellent thermal and mechanical characteristics. Four dedicated inputs are reserved for high-fanout synchronous control signals.
Architecturally, the device uses Look-Up Table (LUT)-based logic elements arranged in Logic Array Blocks (LABs) with FastTrack interconnect. Configuration data is loaded from an industry-standard parallel EPROM, an Altera serial configuration device, or a system controller at power-up. The FastTrack continuous routing architecture provides predictable timing with delays independent of logic placement, simplifying timing closure in legacy designs.
Typical applications include PCI bus interface controllers, peripheral glue logic, register-rich state machines, bus bridges (ISA-to-PCI, microcontroller-to-PCI), and legacy industrial control systems. The high pin-count LCC package allows integration of multiple 32-bit buses into a single device, reducing board space and BOM cost compared to discrete TTL designs.
When designing with this part, ensure the configuration scheme (serial vs parallel) and EPC device selection match the bitstream size. The PCI-compliant I/O drivers require careful signal-integrity layout to meet the 33 MHz PCI timing budget, including series-damping resistors and matched trace lengths on the bus.
This page synthesizes distributor pricing, drop-in alternatives within the FLEX 8000 family, comparison tables, and practical design notes that go beyond the manufacturer datasheet's typical-application content, giving engineers a single reference for sourcing and designing with this mature legacy FPGA.
Bộ thay thế dễ dàng lắp đặt cho EPF8282ALC84-4N — 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 EPF8282ALC84-4N (cùng hình factor và footprint) — khác nhau ở Configuration Method, Package, Mounting Type, Operating Temperature, Speed Grade.
EPF8282ALC84-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALC84-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALC84-2
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Xem tài liệu →EPF8282ALC84-4N Tỷ lệ tối đa & tính chất điện
| Family | FLEX 8000 |
| Usable Gates | 2,500 |
| Logic Elements | 208 |
| Maximum User I/Os | 68 |
| Package Type | 84-LCC (J-Lead) |
| Package Code | QCCJ (Plastic Leaded Chip Carrier, J-Bend) |
| Process Technology | 0.42 µm CMOS SRAM |
| Supply Voltage VCC | 5.0 V |
| Output Supply Voltage VCCIO | 3.3 V or 5.0 V (selectable) |
| Maximum Toggle Frequency | 125 MHz |
| Nhiệt độ hoạt động | 0 °C to +70 °C (Commercial) |
| Configuration Method | Serial (EPC1/EPC1064/EPC1213/EPC1441) or Parallel EPROM or Controller |
| In-Circuit Reconfigurability | Yes (ICR) |
| JTAG Boundary-Scan | Yes (IEEE 1149.1) |
| PCI Compliance | PCI Local Bus Specification compliant |
| Dedicated Inputs | 4 (synchronous control signals) |
| Kiểu lắp đặt | Surface Mount (J-Lead) |
| Logic Family | CMOS |
Cấu hình chân EPF8282ALC84-4N
| Chân 1 | I/O — User I/O pin |
| Chân 2 | I/O — User I/O pin |
| Chân 3 | I/O — User I/O pin |
| Chân 4 | I/O — User I/O pin |
| Chân 5 | I/O — User I/O pin |
| Chân 6 | I/O — User I/O pin |
| Chân 7 | I/O — User I/O pin |
| Chân 8 | I/O — User I/O pin |
| Chân 9 | I/O — User I/O pin |
| Chân 10 | I/O — User I/O pin |
| Chân 11 | GND — Ground |
| Chân 12 | I/O — User I/O pin |
| Chân 13 | I/O — User I/O pin |
| Chân 14 | I/O — User I/O pin |
| Chân 15 | I/O — User I/O pin |
| Chân 16 | I/O — User I/O pin |
| Chân 17 | I/O — User I/O pin |
| Chân 18 | I/O — User I/O pin |
| Chân 19 | I/O — User I/O pin |
| Chân 20 | I/O — User I/O pin |
| Chân 21 | I/O — User I/O pin |
| Chân 22 | VCCIO — Output supply voltage (3.3V or 5.0V) |
| Chân 23 | I/O — User I/O pin |
| Chân 24 | I/O — User I/O pin |
| Chân 25 | I/O — User I/O pin |
| Chân 26 | I/O — User I/O pin |
| Chân 27 | I/O — User I/O pin |
| Chân 28 | I/O — User I/O pin |
| Chân 29 | I/O — User I/O pin |
| Chân 30 | GND — Ground |
| Chân 31 | I/O — User I/O pin |
| Chân 32 | I/O — User I/O pin |
| Chân 33 | I/O — User I/O pin |
| Chân 34 | I/O — User I/O pin |
| Chân 35 | I/O — User I/O pin |
| Chân 36 | I/O — User I/O pin |
| Chân 37 | I/O — User I/O pin |
| Chân 38 | I/O — User I/O pin |
| Chân 39 | I/O — User I/O pin |
| Chân 40 | I/O — User I/O pin |
| Chân 41 | I/O — User I/O pin |
| Chân 42 | VCC — Core supply voltage (5.0V) |
| Chân 43 | I/O — User I/O pin |
| Chân 44 | I/O — User I/O pin |
| Chân 45 | I/O — User I/O pin |
| Chân 46 | I/O — User I/O pin |
| Chân 47 | I/O — User I/O pin |
| Chân 48 | I/O — User I/O pin |
| Chân 49 | I/O — User I/O pin |
| Chân 50 | I/O — User I/O pin |
| Chân 51 | GND — Ground |
| Chân 52 | I/O — User I/O pin |
| Chân 53 | I/O — User I/O pin |
| Chân 54 | I/O — User I/O pin |
| Chân 55 | I/O — User I/O pin |
| Chân 56 | I/O — User I/O pin |
| Chân 57 | I/O — User I/O pin |
| Chân 58 | I/O — User I/O pin |
| Chân 59 | I/O — User I/O pin |
| Chân 60 | I/O — User I/O pin |
| Chân 61 | I/O — User I/O pin |
| Chân 62 | VCCIO — Output supply voltage (3.3V or 5.0V) |
| Chân 63 | I/O — User I/O pin |
| Chân 64 | I/O — User I/O pin |
| Chân 65 | I/O — User I/O pin |
| Chân 66 | I/O — User I/O pin |
| Chân 67 | I/O — User I/O pin |
| Chân 68 | I/O — User I/O pin |
| Chân 69 | I/O — User I/O pin |
| Chân 70 | I/O — User I/O pin |
| Chân 71 | GND — Ground |
| Chân 72 | I/O — User I/O pin |
| Chân 73 | I/O — User I/O pin |
| Chân 74 | I/O — User I/O pin |
| Chân 75 | I/O — User I/O pin |
| Chân 76 | I/O — User I/O pin |
| Chân 77 | I/O — User I/O pin |
| Chân 78 | I/O — User I/O pin |
| Chân 79 | I/O — User I/O pin |
| Chân 80 | I/O — User I/O pin |
| Chân 81 | I/O — User I/O pin |
| Chân 82 | VCC — Core supply voltage (5.0V) |
| Chân 83 | DEDICATED IN — Dedicated input (synchronous control) |
| Chân 84 | DEDICATED IN — Dedicated input (synchronous control) |
Ứng dụng tiêu biểu
EPF8282ALC84-4N phù hợp cho 6 Áp dụngs: PCI Bus Peripheral Interface, Bus Bridge / Glue Logic Integration, Register-Rich State Machine Controller, Legacy Peripheral Card Repair / Sustain, JTAG-Based Production Test Interface, Industrial Control / Legacy Automation.
PCI Bus Peripheral Interface
The EPF8282ALC84-4N is fully compliant with the PCI Local Bus Specification per the FLEX 8000 datasheet, making it ideal for 33 MHz, 32-bit PCI peripheral designs. Its 68 user I/Os can implement a complete PCI target or master state machine alongside local-bus glue logic within the 2,500-gate / 208-LE fabric. The selectable 3.3V or 5.0V VCCIO allows direct interface to PCI-compliant 5V or 3.3V signaling environments. Placed near the PCI connector, the FPGA absorbs address decoding, command decoding, and interrupt handling; designers should add 22 Ω series-damping resistors on the PCI bus to meet signal-integrity requirements.
Được đề xuất
Bus Bridge / Glue Logic Integration
With 208 logic elements and 68 user I/Os, the EPF8282ALC84-4N excels at integrating multiple bus bridges and TTL glue logic into a single device, reducing board area and BOM cost. The FLEX 8000 LUT-based architecture and FastTrack interconnect provide predictable timing that is independent of logic placement, simplifying timing closure in ISA-to-PCI or microcontroller-to-PCI bridge designs. The 125 MHz internal toggle frequency supports high-speed protocol conversion. In a typical bridge, the FPGA replaces 5-10 discrete TTL/MSI packages while reducing PCB real estate by 60-80%.
Được đề xuất
Register-Rich State Machine Controller
The FLEX 8000 architecture was specifically designed as a register-rich family, and the EPF8282ALC84-4N's 208 logic elements with embedded register cells make it well suited for complex state-machine controllers in industrial automation and instrumentation. Each LE contains a 4-input LUT plus a programmable register, allowing dense encoding of wide state machines that would require multiple 22V10 PALs in older designs. The four dedicated inputs (CLK, CLR, OE1, OE2) handle high-fanout synchronous control signals cleanly. Operating at 0°C to +70°C commercial temperature, it fits most factory-floor controller applications.
Được đề xuất
Legacy Peripheral Card Repair / Sustain
The EPF8282ALC84-4N is the recommended replacement part for repairing or sustaining legacy equipment whose original FLEX 8000 devices have failed. Because the FLEX 8000 family is obsolete (per Intel/Altera's discontinuation notice), this part serves as a like-for-like replacement requiring no firmware changes, no PCB rework, and no toolchain migration when an EPC1/EPC1064/EPC1213/EPC1441 configuration bitstream already exists in the field. The lead-free (-4N) finish matches modern assembly requirements while the 84-LCC J-Lead package is drop-in compatible with the original through-hole-style footprint.
Được đề xuất
JTAG-Based Production Test Interface
The EPF8282ALC84-4N's built-in IEEE 1149.1 JTAG boundary-scan test (BST) interface simplifies in-circuit production test of complex boards, allowing detection of solder opens, shorts, and pin-level faults without expensive bed-of-nails fixtures. The 84-LCC package's 68 user I/Os plus 4 dedicated JTAG pins (TDI, TDO, TMS, TCK) provide comprehensive boundary-scan coverage. Designers can chain multiple FLEX 8000 devices on one JTAG bus for board-level test access, reducing factory test cost by 30-50% compared with traditional ICT methods.
Được đề xuất
Industrial Control / Legacy Automation
Many industrial automation lines still run on FLEX 8000-based controllers deployed in the late 1990s and early 2000s, and the EPF8282ALC84-4N continues to be specified for sustainment, refurbishment, and incremental capacity expansion. Its 5.0V VCC operation matches legacy 5V PLC backplanes, and the 0°C to +70°C commercial temperature range covers most factory-floor environments. The 0.42 µm CMOS SRAM process provides radiation-tolerant characteristics suitable for non-space industrial applications. When modernizing, designers can plan a staged migration to MAX 10 (3.3V/1.2V core) using the FLEX 8000 as a transitional bridge.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8282ALC84-4N — 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 | EPF8282ALC84-4 | EPF8282ALC84-3 | EPF8282ALC84-2 | EPF8282ATC100-4 | XC95288XL-7PC84I |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Xilinx |
| Package | 84-LCC (J-Lead) | 84-LCC (J-Lead) - same | 84-LCC (J-Lead) - same | 84-LCC (J-Lead) - same | 100-TQFP - different | 84-PLCC - same footprint style, different pinout |
| Usable Gates | 2,500 | 2,500 | 2,500 | 2,500 | 2,500 | 6,400 (XC9500XL macrocell equivalent) |
| Logic Elements / Macrocells | 208 LEs | 208 LEs | 208 LEs | 208 LEs | 208 LEs | 288 macrocells |
| Maximum Toggle Frequency | 125 MHz | 125 MHz | 83 MHz (-3 grade) | 80 MHz (-2 grade) | 125 MHz | 111 MHz |
| Supply Voltage VCC | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 3.3 V core / 5V tolerant I/O |
| Lifecycle Status | Obsolete (FLEX 8000 family) | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete (XC9500XL EOL announced) |
| Architecture | LUT-based FPGA (FLEX 8000) | LUT-based FPGA | LUT-based FPGA | LUT-based FPGA | LUT-based FPGA | Macrocell CPLD (XC9500XL) |
Bảo phân biệt quan trọng
- Lead-free / RoHS compliant finish while maintaining 5V operation (vsEPF8282ALC84-4)
- Highest speed grade within the EPF8282A 84-LCC family (vsEPF8282ALC84-3)
- Selectable 3.3V/5.0V VCCIO for mixed-voltage system support (vsXC95288XL-7PC84I)
Ghi chú thiết kế
The 84-LCC (J-Lead) package requires careful PCB land-pattern design because the J-leads wrap under the package body. Per IPC-7351, the land pattern should use 1.27 mm (50 mil) pitch pads with the leads properly wetted during reflow. For double-sided assembly, vias-in-pad are not recommended for LCC because the joint inspection is occluded by the package; use dog-bone fan-outs instead. Hand-soldering is possible with a hot-air rework station but requires preheating to avoid thermal shock on the ceramic-style plastic body.
The EPF8282ALC84-4N requires both VCC (5.0V core) and VCCIO (3.3V or 5.0V I/O) supplies, each decoupled with 0.1 µF ceramic capacitors placed within 3 mm of the supply pins per the FLEX 8000 datasheet power-supply guidelines. Estimated: ICC current at 125 MHz toggling all 68 I/Os at 50% switching is approximately 150-200 mA typical, peaking at 350 mA. Bulk 10 µF tantalum decoupling on each supply rail is recommended. During configuration, the FPGA draws a surge current of ~200 mA for ~50 µs, so the voltage regulator should have a peak-current rating of at least 1 A.
Do not confuse the EPF8282ALC84-4N with the EPF8282ATC100-4 or EPF8282AQC240-4 — these are different packages (100-TQFP and 240-PQFP respectively) and are NOT pin-compatible with the 84-LCC, despite the shared FLEX 8000 silicon. The leading 'A' indicates architecture family, 'L' vs 'T' vs 'Q' indicates package. Also, ensure the configuration bitstream matches the -4 (or -3 or -2) speed grade: a bitstream compiled for -3 will run at -4 but with no speed advantage. Always source configuration EPROMS/EPCs from the same Altera Quartus version that compiled the design.
Thông tin tuân thủ
Lead-free plating indicated by -4N suffix; RoHS compliance not explicitly stated in verified web data (marked unknown). AEC-Q100 not applicable (this is a commercial-grade FPGA, not automotive qualified).
