EPF8452ALC84-3 - FLEX 8000 FPGA, 84-PLCC | Intel / Altera
料号： EPF8452ALC84-3 ⚠ 最后一次采购| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.25 | $162.50 |
| 100 | $13.8 | $1,380.00 |
| 500 | $11.4 | $5,700.00 |
| 1,000 | $9.95 | $9,950.00 |
EPF8452ALC84-3 概述
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.
直接替换替代料： EPF8452ALC84-3 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： EPF8452ALC84-3 （相同外形与封装尺寸） ——差异在于 Configuration Method, Package, Mounting Type, Speed Grade, Process Technology.
快速对比工具——选择替代料号进行并排对比：
EPF8282ALC84-3
✅ 直接替换✓ 有现货
$9.85 / 个
查看数据手册 →EPF8282ALI84-4
✅ 直接替换✓ 有现货
$8.2 / 个
查看数据手册 →EPF8282ALC84-4
✅ 直接替换✓ 有现货
$9.75 / 个
查看数据手册 →EPF8282ALC84-4N
✅ 直接替换✓ 有现货
$23.85 / 个
查看数据手册 →EPF8282ALC84-2
✅ 直接替换✓ 有现货
$8.95 / 个
查看数据手册 →EPF8452ALC84-3 最大额定值与电气特性
| 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 |
| 电源电压 | 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 |
| 封装 | 84-LCC / 84-PLCC (J-Lead) |
| 引脚数量 | 84 |
| 安装类型 | Surface Mount (PLCC socket compatible) |
| 工作温度 | 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) |
EPF8452ALC84-3 引脚配置
| 引脚 1 | I/O — User I/O pin (bank-dependent) |
| 引脚 2 | I/O — User I/O pin (bank-dependent) |
| 引脚 3 | I/O — User I/O pin (bank-dependent) |
| 引脚 4 | I/O — User I/O pin (bank-dependent) |
| 引脚 5 | I/O — User I/O pin (bank-dependent) |
| 引脚 6 | I/O — User I/O pin (bank-dependent) |
| 引脚 7 | I/O — User I/O pin (bank-dependent) |
| 引脚 8 | VCCINT — 5.0 V core supply |
| 引脚 9 | I/O — User I/O pin (bank-dependent) |
| 引脚 10 | I/O — User I/O pin (bank-dependent) |
| 引脚 11 | I/O — User I/O pin (bank-dependent) |
| 引脚 12 | I/O — User I/O pin (bank-dependent) |
| 引脚 13 | I/O — User I/O pin (bank-dependent) |
| 引脚 14 | I/O — User I/O pin (bank-dependent) |
| 引脚 15 | I/O — User I/O pin (bank-dependent) |
| 引脚 16 | I/O — User I/O pin (bank-dependent) |
| 引脚 17 | I/O — User I/O pin (bank-dependent) |
| 引脚 18 | I/O — User I/O pin (bank-dependent) |
| 引脚 19 | I/O — User I/O pin (bank-dependent) |
| 引脚 20 | I/O — User I/O pin (bank-dependent) |
| 引脚 21 | GND — Ground |
| 引脚 22 | I/O — User I/O pin (bank-dependent) |
| 引脚 23 | I/O — User I/O pin (bank-dependent) |
| 引脚 24 | I/O — User I/O pin (bank-dependent) |
| 引脚 25 | I/O — User I/O pin (bank-dependent) |
| 引脚 26 | I/O — User I/O pin (bank-dependent) |
| 引脚 27 | I/O — User I/O pin (bank-dependent) |
| 引脚 28 | I/O — User I/O pin (bank-dependent) |
| 引脚 29 | I/O — User I/O pin (bank-dependent) |
| 引脚 30 | I/O — User I/O pin (bank-dependent) |
| 引脚 31 | I/O — User I/O pin (bank-dependent) |
| 引脚 32 | I/O — User I/O pin (bank-dependent) |
| 引脚 33 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| 引脚 34 | I/O — User I/O pin (bank-dependent) |
| 引脚 35 | I/O — User I/O pin (bank-dependent) |
| 引脚 36 | I/O — User I/O pin (bank-dependent) |
| 引脚 37 | I/O — User I/O pin (bank-dependent) |
| 引脚 38 | I/O — User I/O pin (bank-dependent) |
| 引脚 39 | I/O — User I/O pin (bank-dependent) |
| 引脚 40 | I/O — User I/O pin (bank-dependent) |
| 引脚 41 | I/O — User I/O pin (bank-dependent) |
| 引脚 42 | GND — Ground |
| 引脚 43 | I/O — User I/O pin (bank-dependent) |
| 引脚 44 | I/O — User I/O pin (bank-dependent) |
| 引脚 45 | I/O — User I/O pin (bank-dependent) |
| 引脚 46 | I/O — User I/O pin (bank-dependent) |
| 引脚 47 | I/O — User I/O pin (bank-dependent) |
| 引脚 48 | I/O — User I/O pin (bank-dependent) |
| 引脚 49 | I/O — User I/O pin (bank-dependent) |
| 引脚 50 | I/O — User I/O pin (bank-dependent) |
| 引脚 51 | I/O — User I/O pin (bank-dependent) |
| 引脚 52 | I/O — User I/O pin (bank-dependent) |
| 引脚 53 | VCCINT — 5.0 V core supply |
| 引脚 54 | I/O — User I/O pin (bank-dependent) |
| 引脚 55 | I/O — User I/O pin (bank-dependent) |
| 引脚 56 | I/O — User I/O pin (bank-dependent) |
| 引脚 57 | I/O — User I/O pin (bank-dependent) |
| 引脚 58 | I/O — User I/O pin (bank-dependent) |
| 引脚 59 | I/O — User I/O pin (bank-dependent) |
| 引脚 60 | I/O — User I/O pin (bank-dependent) |
| 引脚 61 | I/O — User I/O pin (bank-dependent) |
| 引脚 62 | I/O — User I/O pin (bank-dependent) |
| 引脚 63 | GND — Ground |
| 引脚 64 | I/O — User I/O pin (bank-dependent) |
| 引脚 65 | I/O — User I/O pin (bank-dependent) |
| 引脚 66 | I/O — User I/O pin (bank-dependent) |
| 引脚 67 | I/O — User I/O pin (bank-dependent) |
| 引脚 68 | I/O — User I/O pin (bank-dependent) |
| 引脚 69 | I/O — User I/O pin (bank-dependent) |
| 引脚 70 | I/O — User I/O pin (bank-dependent) |
| 引脚 71 | I/O — User I/O pin (bank-dependent) |
| 引脚 72 | I/O — User I/O pin (bank-dependent) |
| 引脚 73 | I/O — User I/O pin (bank-dependent) |
| 引脚 74 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| 引脚 75 | TDI — JTAG test data input |
| 引脚 76 | TMS — JTAG test mode select |
| 引脚 77 | TCK — JTAG test clock |
| 引脚 78 | nCONFIG — Configuration control (active low) |
| 引脚 79 | nSTATUS — Configuration status (active low) |
| 引脚 80 | CONF_DONE — Configuration complete (open drain) |
| 引脚 81 | DCLK — Configuration clock input |
| 引脚 82 | DATA0 — Configuration data input |
| 引脚 83 | TDO — JTAG test data output |
| 引脚 84 | GND — Ground |
典型应用
EPF8452ALC84-3 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： EPF8452ALC84-3 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Higher logic density than EPF8282ALC84-3 in the same 84-PLCC package （对比 EPF8282ALC84-3)
- Higher I/O count than EPF81500ARC240-3's smaller packages in the same family （对比 EPF81500ARC240-3)
- 5 V core support versus newer 1.5/1.8 V Cyclone-series FPGAs （对比 Cyclone IV EP4CE6E22)
设计说明
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.
合规信息
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.
