EP1C3T100I8N - Cyclone FPGA 2910 LEs, 100-TQFP | Intel (Altera)
MPN: EP1C3T100I8N ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.85 | $1,385.00 |
| 500 | $11.4 | $5,700.00 |
| 1,000 | $9.75 | $9,750.00 |
Drop-in alternatives for EP1C3T100I8N — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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View Datasheet →EP1C3T100I8N Maximum Ratings & Electrical Characteristics
| Series | Cyclone |
| Family | Cyclone FPGA |
| Logic Elements | 2,910 |
| Embedded Memory (bits) | 58,904 |
| Total RAM Bits | 58,904 |
| Memory Type | M4K blocks (4 Kbit each) |
| Number of PLLs | 1 |
| Maximum User I/O | 65 |
| Core Voltage (VCCINT) | 1.5 V |
| Process Technology | 130 nm |
| Operating Temperature | -40C to +100C (Industrial) |
| Maximum Frequency | 275.03 MHz |
| Package | TQFP-100 (100-pin TQFP) |
| Mounting Type | 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) Pin Configuration Guide
Complete pinout information for EP1C3T100I8N (tqfp-100 (100-pin tqfp) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for EP1C3T100I8N.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
EP1C3T100I8N is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for EP1C3T100I8N — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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) |
Key Differentiators
- Industrial temperature grade (-40C to +100C) versus commercial-only equivalents (vs EP1C3T100C8N)
- Same die as speed-grade I7 variant - faster Fmax available without PCB change (vs EP1C3T100I7N)
- Mature ecosystem with decades of reference designs and IP cores (vs Newer Lattice MachXO2 (LCMXO2-256HC-4TQ100))
Design Notes
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.
Compliance Information
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.
