EP2C5F256I8N - Cyclone II FPGA, 4,608 LEs, 256-FBGA | Intel
MPN： EP2C5F256I8N ✓ 啟用中EP2C5F256I8N 概覽
A Field Programmable Gate Array (FPGA) is a reprogrammable semiconductor device containing an array of configurable logic blocks (CLBs), programmable routing, and dedicated hard-IP such as block RAM, PLLs, and (in modern families) transceivers. FPGAs sit between discrete logic ICs (74-series glue logic) and application-specific integrated circuits (ASICs): unlike discrete logic, they integrate thousands to millions of gates onto one die, and unlike ASICs they are reprogrammable, allowing iterative development and late-stage design changes. FPGAs are widely used for glue logic, custom interfacing, DSP pipelines, prototyping of ASIC designs, and high-speed I/O expansion.
Key features of the EP2C5F256I8N include 4,608 LEs, 13 embedded 18x18 multipliers, two PLLs, 158 user I/O pins distributed across eight I/O banks, and 119,808 bits of M4K block RAM organized as 4-Kbit blocks. The device supports LVDS, LVTTL, LVCMOS, SSTL, and HSTL I/O standards, and supports external memory interfaces including DDR, DDR2, SDR, and QDR SRAM. Configuration is handled through active serial (AS), passive serial (PS), JTAG, or Fast Passive Parallel (FPP) modes. The 256-ball 1.0 mm pitch FBGA package is JEDEC-compliant and supports lead-free reflow.
Architecture details: the Cyclone II logic element (LE) is built around a 4-input look-up table (LUT) with a programmable register, supporting both arithmetic and carry-chain modes for efficient adder and counter implementation. The 90 nm process node allows the EP2C5 to deliver this logic capacity at sub-watt static power while supporting clock management through dedicated PLL blocks with up to four output clocks each. Configuration bitstream is stored in external serial flash and loaded into SRAM configuration cells at power-up.
Typical applications include digital signal processing front-ends, motor control and industrial automation, video processing and display controllers, communications protocol bridging (UART, SPI, I2C, PCIe soft IP), and ASIC prototyping. The combination of low cost, embedded multipliers, and DDR memory interfaces makes Cyclone II especially attractive for cost-sensitive, volume-production designs.
When designing with this device, plan I/O bank assignments carefully because VCCIO must be supplied per bank and mixed-voltage standards require careful reference voltage selection. Use Quartus II design software (versions 13.0 SP1 and earlier, or the ModelSim-Intel starter edition) for synthesis and place-and-route; modern Quartus Prime does not include Cyclone II support. Configuration storage (EPCS serial flash) is mandatory at production.
直接替換替代品，適用於 EP2C5F256I8N — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： EP2C5F256I8N （相同外形與佔位） — 差異在於 Package, Process Technology, Speed Grade, RoHS Status, Operating Temperature.
EP2C5F256I8
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查看資料表 →EP2C5F256I8N 最大額定值與電氣特性
| Manufacturer | Intel (formerly Altera) |
| Series | Cyclone II |
| Logic Elements (LEs) | 4,608 |
| Embedded Memory | 119,808 bits (M4K blocks) |
| Number of M4K RAM Blocks | 26 |
| Embedded 18x18 Multipliers | 13 |
| PLLs | 2 |
| Maximum User I/O | 158 |
| Number of I/O Banks | 8 |
| Supply Voltage (Core) | 1.15 V to 1.25 V (1.2 V typ.) |
| 工作溫度範圍 | -40 C to +85 C (industrial, 'I' grade) |
| 封裝 | 256-ball FineLine BGA (FBGA-256), 17 x 17 mm, 1.0 mm pitch |
| JEDEC Package Code | S-PBGA-B256 |
| Process Node | 90 nm |
| Configuration Modes | AS, PS, JTAG, FPP |
| 安裝類型 | Surface Mount |
| Lead-Free | Yes |
| RoHS 狀態 | Compliant |
EP2C5F256I8N s-pbga-b256 腳位配置指南
EP2C5F256I8N（s-pbga-b256 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： EP2C5F256I8N.
請參閱 資料表 以查看完整腳位配置。
典型應用
EP2C5F256I8N 適用於 6 應用s: Industrial Motor Control, Video Processing & Display Controllers, ASIC Prototyping & Emulation, Communications Protocol Bridging, Digital Signal Processing (DSP) Front-Ends, Test & Measurement Instrumentation.
Industrial Motor Control
The EP2C5F256I8N is a strong fit for industrial motor control and FOC (field-oriented control) designs because its 13 embedded 18x18 multipliers execute the Park/Clarke transforms and PI loops at multi-MHz update rates, while 158 user I/O pins carry multi-axis encoder (QEP), Hall-sensor, and PWM signals. The 119,808 bits of M4K block RAM store look-up tables for sine, SVM, and gain scheduling. Operating temperature of -40C to +85C supports factory-floor deployment; two PLLs provide low-jitter clocks for synchronized PWM switching. Estimated: at 100 MHz operation, this density comfortably runs a 3-axis FOC loop at 20 kHz update rate with safety margin.
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Video Processing & Display Controllers
The EP2C5F256I8N implements simple video processing pipelines such as scaling, color-space conversion, alpha blending, and overlay composition. The 158 user I/O pins accommodate parallel RGB/YCbCr interfaces and control signals for TFT LCDs, while 13 multipliers handle real-time color interpolation and chroma upsampling. With 26 M4K blocks (119,808 bits), line buffers and small frame buffers fit on-chip. At 24-bit RGB @ 60 Hz WVGA, estimated bandwidth requirements (~50 MHz pixel clock) are well within Cyclone II performance. For higher resolutions, migrate to EP2C35 or EP2C70 in the same family.
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ASIC Prototyping & Emulation
The EP2C5F256I8N is widely used for ASIC prototyping and SoC emulation because its 4,608 LEs, 158 I/O pins, and large embedded memory provide enough logic to map medium-complexity ASIC blocks. The 90 nm process delivers predictable timing for RTL synthesis, and the JTAG-based configuration makes interactive debug cycles fast. Multiple EP2C5 devices can be JTAG-chained to emulate larger ASICs. Quartus II 13.0 SP1 supports multi-FPGA partitioning. Estimated: one EP2C5 typically maps a 50K-gate ASIC netlist at 60-70% logic utilization with stable timing closure.
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Communications Protocol Bridging
The EP2C5F256I8N implements multi-protocol bridges (UART, SPI, I2C, CAN, Ethernet MAC, PCIe soft IP) between industrial buses and host processors. Its 158 I/O pins support many simultaneous serial channels, the 4,608 LEs run stateful protocol stacks, and the 26 M4K blocks buffer packet payloads. LVDS support in select I/O pairs enables high-speed links between boards. Typical use cases include FPGA-based I/O expansion for Raspberry Pi/SoM hosts, custom industrial gateways, and protocol converters for legacy serial equipment. Two PLLs generate per-channel reference clocks.
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Digital Signal Processing (DSP) Front-Ends
The EP2C5F256I8N executes FIR, IIR, and FFT algorithms at sample rates up to ~150 MHz thanks to its 13 dedicated 18x18 multipliers and dedicated adder/carry logic in every LE. The 119,808 bits of block RAM store coefficient tables and delay lines for 256-tap FIRs at 16-bit precision. Audio sample-rate conversion, vibration analysis for predictive maintenance, software-defined radio baseband processing, and image preprocessing are typical workloads. The -40C to +85C industrial range enables outdoor and industrial DSP deployments without active cooling.
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Test & Measurement Instrumentation
The EP2C5F256I8N serves as the logic core in custom test and measurement equipment: logic analyzers, protocol exercisers, AWG sequencers, and bench data-acquisition systems. Its 158 I/O pins drive multi-channel stimulus and capture DUT response, while 4,608 LEs implement custom timing/sequencer state machines. The two PLLs generate precise sample clocks with sub-ns jitter. Industrial temperature grade supports production-floor ATE environments. Quartus II 13.0 SP1 with SignalTap II logic analyzer provides integrated debug visibility for real-time acquisition without external probes.
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推薦產品摘要
工程參考資料，適用於 EP2C5F256I8N — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | EP2C5F256I8 | EP2C5AF256I8N | EP2C5AF256A7N | EP2C5F256C8N | EP2C5F256C8 |
|---|---|---|---|---|---|---|
| Brand | Intel | Intel | Intel | Intel | Intel | Intel |
| Package | FBGA-256 (256-ball, 17x17 mm, 1.0 mm pitch) | FBGA-256 - same | FBGA-256 - same | FBGA-256 - same | FBGA-256 - same | FBGA-256 - same |
| Logic Elements | 4,608 | 4,608 | 4,608 | 4,608 | 4,608 | 4,608 |
| Embedded Memory (bits) | 119,808 | 119,808 | 119,808 | 119,808 | 119,808 | 119,808 |
| Embedded 18x18 Multipliers | 13 | 13 | 13 | 13 | 13 | 13 |
| Maximum User I/O | 158 | 158 | 158 | 158 | 158 | 158 |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (automotive) | -40C to +125C (automotive, A7 speed) | 0C to +85C (commercial) | 0C to +85C (commercial) |
| Automotive Grade (AEC-Q100) | No | No | Yes | Yes (A7 speed) | No | No |
| Pb-Free / Lead-Free | Yes ('N' suffix) | No | Yes | Yes | Yes | No |
主要差異化特點
- Industry-standard Cyclone II entry-point density in 17x17 mm FBGA-256 (對比EP2C20F484I8N (Cyclone II))
- Industrial temperature grade with full Cyclone II toolchain support (對比EP2C5F256C8N (commercial grade))
- Mature ecosystem with 15+ years of reference designs and IP cores (對比Lattice ECP5 / Xilinx Spartan-6 (cross-brand))
設計說明
The EP2C5F256I8N requires three independent power rails - VCCINT (1.15-1.25 V core), VCCIO (per-bank, 1.5-3.3 V), and VCC_PLL (1.2 V analog) - each with bulk decoupling. Bulk 100 uF tantalum plus 0.1 uF/1 uF ceramic per rail is recommended. According to the Cyclone II datasheet, VCC_PLL requires a dedicated filtered supply; sharing it with VCCINT causes PLL jitter degradation. Power sequencing: VCCINT must precede or simultaneously rise with VCCIO; VCCIO before VCCINT can latch up I/O.
The 256-ball FBGA package uses 1.0 mm pitch, which requires 4-layer PCB with controlled-impedance routing and laser-drilled microvias (HDI process). Escape routing of inner balls uses via-in-pad. According to the Cyclone II hardware board design guidelines, trace impedance for LVDS pairs is 100 ohm differential; 50 ohm single-ended for general I/O. Use a ground plane under the BGA for return paths; route high-speed traces on top layers and power on inner layers.
Three common pitfalls: (1) Using Quartus Prime (any version) instead of Quartus II 13.0 SP1 - Cyclone II is NOT supported in Quartus Prime. (2) Forgetting that JTAG configuration requires the nCONFIG, nSTATUS, and CONFIG_DONE pins be properly pulled, or the device will not enter user mode. (3) Assuming 100% I/O availability - the actual usable I/O count is less than 158 because VCCIO/GND/JTAG/PLL balls consume package positions. Always re-check the pin tables in the datasheet for your specific package.
合規資訊
RoHS compliant per Altera/Intel product page (Pb-free 'N' suffix). Not AEC-Q100 qualified - choose EP2C5AF256I8N for automotive applications. Halogen-free status not stated in verified data.
