EP1C3T100I8N - Cyclone FPGA 2910 LEs, 100-TQFP | Intel (Altera)
MPN： EP1C3T100I8N ✗ 停產EP1C3T100I8N 概覽
A Field-Programmable Gate Array (FPGA) is a programmable logic device that lets engineers implement arbitrary digital logic via a hardware description language, then reconfigure the silicon after PCB assembly. FPGAs sit in the broader hierarchy of programmable logic -> logic IC -> integrated circuit -> semiconductor. The Cyclone family was Altera's first low-cost FPGA line and is part of the long-running Cyclone (Cyclone -> Cyclone II -> Cyclone III -> Cyclone IV -> Cyclone V) lineage that continues to serve high-volume applications.
Key features of the EP1C3T100I8N include 2,910 logic elements, 58,904 bits of embedded RAM, 1 PLL, and a maximum user I/O count of 65. The device operates from a 1.5 V core supply with PLL support for clock multiplication, and supports LVTTL, LVCMOS, SSTL-2, and SSTL-3 I/O standards, making it suitable for SDRAM and generic parallel interfaces. Industrial temperature grade (-40C to +100C) and the lead-free TQFP-100 package support both commercial and industrial end products.
The Cyclone architecture uses SRAM-based configuration cells and 4-input look-up tables (LUTs). Each logic element contains one 4-input LUT, a programmable register, and a carry chain for fast arithmetic. Embedded M4K memory blocks (4 Kbits each, plus 512 parity bits) deliver true dual-port operation at up to 200 MHz, enabling on-chip buffering for FIFOs, packet headers, and DSP coefficient storage.
Typical applications for the EP1C3T100I8N include video/image processing front-ends, communication protocol bridging, and industrial motor-control signal conditioning. The PLL combined with abundant I/O makes it attractive for glue logic that replaces multiple 74-series TTL parts and CPLDs on legacy boards.
When designing with this device, ensure configuration data is loaded from a compatible EPC serial configuration device, and respect the 1.5 V VCCINT requirement. The 100-pin TQFP package is lead-free and supports standard SMT reflow; use JTAG (10-pin header) for in-system programming and boundary-scan test.
This page synthesizes Intel/Altera Cyclone FPGA datasheet excerpts, current distributor pricing as of 2026-09-06, drop-in same-package Cyclone family alternatives, and practical design notes not collated on a single manufacturer page.
直接替換替代品，適用於 EP1C3T100I8N — 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： EP1C3T100I8N （相同外形與佔位） — 差異在於 Package, Family, Operating Temperature, Process Technology, Total RAM Bits.
EP1C3T100C8N
✅ 直接替換聯絡詢價
查看資料表 →EP1C3T100C7N
✅ 直接替換聯絡詢價
查看資料表 →EP1C3T100C6N
✅ 直接替換聯絡詢價
查看資料表 →EP1C3T100I7N
✅ 直接替換聯絡詢價
查看資料表 →EP1C3T100I7
✅ 直接替換聯絡詢價
查看資料表 →EP1C3T100I8N 最大額定值與電氣特性
| Series | Cyclone |
| Family | Cyclone FPGA |
| Logic Elements | 2,910 |
| Embedded Memory (bits) | 58,904 |
| Total RAM Bits | 58,904 |
| 記憶體類型 | M4K blocks (4 Kbit each) |
| Number of PLLs | 1 |
| Maximum User I/O | 65 |
| Core Voltage (VCCINT) | 1.5 V |
| Process Technology | 130 nm |
| 工作溫度 | -40C to +100C (Industrial) |
| Maximum Frequency | 275.03 MHz |
| 封裝 | TQFP-100 (100-pin TQFP) |
| 安裝類型 | Surface Mount |
| Lead-Free | Yes |
| Configuration Method | SRAM-based, serial configuration device or JTAG |
| I/O Standards | LVTTL, LVCMOS, SSTL-2, SSTL-3 |
EP1C3T100I8N tqfp-100 (100-pin tqfp) 腳位配置指南
EP1C3T100I8N（tqfp-100 (100-pin tqfp) 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： EP1C3T100I8N.
請參閱 資料表 以查看完整腳位配置。
典型應用
EP1C3T100I8N 適用於 6 應用s: Industrial Glue Logic Replacement, Video Format Conversion Front-End, Industrial Motor Control Signal Conditioning, Communication Protocol Bridging, Test and Measurement Instrumentation, Legacy Board Repair and Long-Term Sustainment.
Industrial Glue Logic Replacement
The EP1C3T100I8N replaces clusters of 74-series TTL and CMOS glue logic on legacy industrial PCBs, consolidating dozens of small logic gates into a single programmable device. With 2,910 logic elements and 65 user I/O pins, it has the density to absorb address decoding, bus arbitration, interrupt steering, and status-register multiplexing that would otherwise require 10-20 discrete packages. The 130 nm Cyclone silicon runs internal logic comfortably above 100 MHz, while the industrial -40C to +100C temperature grade supports factory-floor deployment. Designers port existing schematics to Verilog or VHDL using Quartus II Web Edition, then iterate logic changes without respinning the PCB - an advantage over hard-wired TTL.
推薦
Video Format Conversion Front-End
In video broadcast and surveillance equipment, the EP1C3T100I8N performs real-time format conversion between BT.656, BT.1120, and VGA timings. Its 58,904 bits of embedded M4K RAM act as line buffers and frame-sync FIFOs, while the single PLL generates the pixel clock from the input video reference. The TQFP-100 package fits legacy video capture boards where board area is constrained. The SRAM-based configuration means designers can field-update the conversion algorithm via JTAG, supporting multi-standard products without hardware variants. For 4K pipelines, Cyclone IV or Cyclone 10 successors are recommended.
推薦
Industrial Motor Control Signal Conditioning
Variable-frequency drives and servo amplifiers use the EP1C3T100I8N to handle quadrature encoder decoding, Hall-sensor combining, and PWM signal generation for three-phase inverter control. The single PLL multiplies a 50 MHz crystal to the PWM carrier frequency (typically 8-16 kHz), while the abundant I/O count accommodates multi-axis systems. Industrial temperature grade and the lead-free TQFP-100 package withstand the vibration and thermal cycling of motor enclosures. Designers implement field-oriented control (FOC) algorithms in hardware to achieve sub-microsecond deterministic loop times impossible in software-only motor controllers.
推薦
Communication Protocol Bridging
The EP1C3T100I8N bridges between legacy and modern serial protocols (UART, SPI, I2C, CAN, RS-485, parallel buses) in industrial gateways, test equipment, and embedded computers. With 2,910 logic elements, designers implement multiple protocol stacks simultaneously without an external microcontroller. The single PLL derives UART baud-rate clocks from a reference oscillator, and the 65 user I/O pins handle multi-drop RS-485 transceivers. The industrial temperature grade supports outdoor cabinet deployment. For high-speed serial (PCIe, Gigabit Ethernet), the Cyclone family is insufficient and a Cyclone IV GX or V SoC is recommended.
推薦
Test and Measurement Instrumentation
Bench-top instruments (logic analyzers, protocol exercisers, custom ATE) use the EP1C3T100I8N as the timing-and-control engine. Its abundant logic elements implement custom trigger sequencers, pattern generators, and timing-aware state machines, while the embedded M4K RAM buffers captured waveforms. The industrial temperature grade ensures repeatable operation in laboratory and production-floor environments. Engineers connect the FPGA directly to ADC/DAC front-ends via LVCMOS or LVTTL I/O. For high-channel-count oscilloscopes, Cyclone IV or newer families provide higher logic density and DSP blocks.
推薦
Legacy Board Repair and Long-Term Sustainment
The EP1C3T100I8N is frequently specified for long-lifecycle programs in avionics, military, and medical equipment where the original Cyclone design cannot be re-qualified on a newer FPGA family without costly recertification. Procurement teams source the obsolete part from authorized brokers and last-time-buy stock, while sustaining engineering continues to support deployed field units. The TQFP-100 package is hand-solderable, easing field repairs. For new designs targeting the same long lifecycle, the Cyclone IV E family offers comparable footprint options with a multi-decade Intel supply commitment.
推薦
推薦產品摘要
工程參考資料，適用於 EP1C3T100I8N — 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 | EP1C3T100C8N | EP1C3T100C7N | EP1C3T100C6N | EP1C3T100I7N | EP1C3T100I7 |
|---|---|---|---|---|---|---|
| Brand | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) |
| Package | TQFP-100 | TQFP-100 (same) | TQFP-100 (same) | TQFP-100 (same) | TQFP-100 (same) | TQFP-100 (same) |
| Logic Elements | 2,910 | 2,910 (same) | 2,910 (same) | 2,910 (same) | 2,910 (same) | 2,910 (same) |
| Embedded RAM (bits) | 58,904 | 58,904 (same) | 58,904 (same) | 58,904 (same) | 58,904 (same) | 58,904 (same) |
| Maximum User I/O | 65 | 65 (same) | 65 (same) | 65 (same) | 65 (same) | 65 (same) |
| Number of PLLs | 1 | 1 (same) | 1 (same) | 1 (same) | 1 (same) | 1 (same) |
| Operating Temperature | -40C to +100C (Industrial) | 0C to +85C (Commercial) | 0C to +85C (Commercial) | 0C to +85C (Commercial) | -40C to +100C (Industrial) | -40C to +100C (Industrial) |
| Speed Grade | I8 | C8 (slower) | C7 (faster than C8) | C6 (fastest C-grade) | I7 (faster than I8) | I7 (faster than I8) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Core Voltage | 1.5 V | 1.5 V (same) | 1.5 V (same) | 1.5 V (same) | 1.5 V (same) | 1.5 V (same) |
主要差異化特點
- Industrial temperature grade (-40C to +100C) versus commercial-only equivalents (對比EP1C3T100C8N)
- Same die as speed-grade I7 variant - faster Fmax available without PCB change (對比EP1C3T100I7N)
- Mature ecosystem with decades of reference designs and IP cores (對比Newer Lattice MachXO2 (LCMXO2-256HC-4TQ100))
設計說明
Estimated: at 2,910 LEs utilized with toggle activity near 25%, the EP1C3T100I8N draws approximately 200-400 mA from VCCINT (1.5 V) depending on clock frequency and I/O switching rate. Provide a low-noise LDO such as the LT1764A-1.5 or TPS7A4515 with bulk and decoupling (100 uF + 10 uF + 100 nF) near the package. All VCCINT pins must be connected; all VCCIO pins must be connected to 3.3 V, 2.5 V, or 1.8 V depending on the I/O standard. Decoupling requirement per Cyclone Family Data Handbook: 0.1 uF per VCC pin plus 1-10 uF bulk per rail.
Place all decoupling capacitors on the same PCB layer as the FPGA within 100 mils of their respective power pins. Use a continuous ground plane beneath the device to minimize supply inductance. The TQFP-100 package exposes a center thermal pad area; on inner layers, stitch the ground plane with vias on a 100 mil grid. JTAG signals (TCK, TMS, TDI, TDO) should be routed as short as possible and guarded by ground; route TMS and TDI with pull-up resistors to VCCIO per the Cyclone configuration guidelines.
Configuration must be loaded from an EPCS serial configuration device (EPCS1SI8N for small bitstreams, EPCS4SI8N for larger) or via JTAG. Do not leave MSEL pins floating - they select the configuration mode and must be tied to VCCINT or GND per the datasheet. The PLL analog supply pin (VCCA_PLL) requires its own filtered 1.5 V rail; sharing it directly with VCCINT without an inductor/ferrite bead introduces jitter. Avoid using pull-ups on nCONFIG and nSTATUS - these are open-drain with internal pull-ups already. The 'N' suffix denotes lead-free; order from distributors that guarantee RoHS-compliant date codes when shipping to EU markets.
For SDRAM interfaces (SSTL-2), the EP1C3T100I8N supports DDR rates up to 133 MHz. Match trace lengths within a byte-lane group to within +/-50 mils and use a 50 ohm controlled-impedance stack-up. The I/O banks must run at the corresponding VCCIO voltage (SSTL-2 requires 2.5 V VCCIO). For clock outputs, place the series termination resistor as close as possible to the FPGA pin and avoid splitting the trace. The single PLL is sufficient for one or two related clock domains; multi-domain designs should target Cyclone IV E or Cyclone 10 LP for additional PLLs.
合規資訊
Lead-free per 'N' suffix in MPN. RoHS compliance requires date-code verification from broker sources. AEC-Q100 not applicable (FPGA is not an automotive-qualified discrete IC). Conflict-mineral and halogen-free status not explicitly stated in available distributor data - confirm with manufacturer documentation for new automotive or medical programs.
