EP1C3T100C7N - Cyclone I FPGA, 2,910 LEs, 100-TQFP | Intel
MPN: EP1C3T100C7N β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $16.42 | $16.42 |
| 10 | $14.78 | $147.80 |
| 100 | $13.11 | $1,311.00 |
| 500 | $11.85 | $5,925.00 |
| 1,000 | $10.6 | $10,600.00 |
Drop-in alternatives for EP1C3T100C7N β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
EP1C3T100C8N
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View Datasheet βEP1C3T100C6
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View Datasheet βEP1C6T100C8N
β Drop-Inπ Reference alternative (not in catalog)
EP1C3T100C7N Maximum Ratings & Electrical Characteristics
| Family | Cyclone I |
| Logic Elements | 2,910 |
| Embedded RAM Bits | 58,896 |
| M4K RAM Blocks | 13 |
| PLLs | 1 |
| Maximum User I/O | 65 |
| Package | 100-pin TQFP (T100) |
| Lead Pitch | 0.5 mm |
| Core Voltage | 1.5 V |
| Process Technology | 0.13 Β΅m SRAM |
| Speed Grade | -7 |
| Operating Temperature | 0 Β°C to +85 Β°C (Commercial) |
| Mounting Type | Surface Mount |
| Configuration Method | Serial (EPCS1/EPCS4) or JTAG |
| I/O Standards Supported | LVTTL, LVCMOS, LVDS, SSTL-2, SSTL-3 |
| RoHS Status | Compliant |
EP1C3T100C7N Pin Configuration
| Pin 1 | I/O β User I/O pin (bank 1) |
| Pin 2 | I/O β User I/O pin (bank 1) |
| Pin 3 | I/O β User I/O pin (bank 1) |
| Pin 4 | I/O β User I/O pin (bank 1) |
| Pin 5 | VCCIO1 β I/O bank 1 supply (3.3 V) |
| Pin 6 | I/O β User I/O pin (bank 1) |
| Pin 7 | I/O β User I/O pin (bank 1) |
| Pin 8 | I/O β User I/O pin (bank 1) |
| Pin 9 | I/O β User I/O pin (bank 1) |
| Pin 10 | I/O β User I/O pin (bank 1) |
| Pin 11 | GND β Ground |
| Pin 12 | I/O β User I/O pin (bank 1) |
| Pin 13 | I/O β User I/O pin (bank 1) |
| Pin 14 | I/O β User I/O pin (bank 1) |
| Pin 15 | I/O β User I/O pin (bank 1) |
| Pin 16 | VCCINT β Core supply (1.5 V) |
| Pin 17 | I/O β User I/O pin (bank 2) |
| Pin 18 | I/O β User I/O pin (bank 2) |
| Pin 19 | GND β Ground |
| Pin 20 | I/O β User I/O pin (bank 2) |
| Pin 21 | I/O β User I/O pin (bank 2) |
| Pin 22 | I/O β User I/O pin (bank 2) |
| Pin 23 | I/O β User I/O pin (bank 2) |
| Pin 24 | VCCIO2 β I/O bank 2 supply (3.3 V) |
| Pin 25 | I/O β User I/O pin (bank 2) |
| Pin 26 | I/O β User I/O pin (bank 2) |
| Pin 27 | I/O β User I/O pin (bank 2) |
| Pin 28 | I/O β User I/O pin (bank 2) |
| Pin 29 | I/O β User I/O pin (bank 2) |
| Pin 30 | GND β Ground |
| Pin 31 | I/O β User I/O pin (bank 2) |
| Pin 32 | I/O β User I/O pin (bank 2) |
| Pin 33 | I/O β User I/O pin (bank 2) |
| Pin 34 | I/O β User I/O pin (bank 2) |
| Pin 35 | I/O β User I/O pin (bank 2) |
| Pin 36 | I/O β User I/O pin (bank 2) |
| Pin 37 | VCCINT β Core supply (1.5 V) |
| Pin 38 | I/O β User I/O pin (bank 3) |
| Pin 39 | I/O β User I/O pin (bank 3) |
| Pin 40 | GND β Ground |
| Pin 41 | I/O β User I/O pin (bank 3) |
| Pin 42 | I/O β User I/O pin (bank 3) |
| Pin 43 | I/O β User I/O pin (bank 3) |
| Pin 44 | I/O β User I/O pin (bank 3) |
| Pin 45 | I/O β User I/O pin (bank 3) |
| Pin 46 | VCCIO3 β I/O bank 3 supply (3.3 V) |
| Pin 47 | I/O β User I/O pin (bank 3) |
| Pin 48 | I/O β User I/O pin (bank 3) |
| Pin 49 | I/O β User I/O pin (bank 3) |
| Pin 50 | I/O β User I/O pin (bank 3) |
| Pin 51 | I/O β User I/O pin (bank 3) |
| Pin 52 | I/O β User I/O pin (bank 3) |
| Pin 53 | GND β Ground |
| Pin 54 | I/O β User I/O pin (bank 3) |
| Pin 55 | I/O β User I/O pin (bank 3) |
| Pin 56 | I/O β User I/O pin (bank 3) |
| Pin 57 | I/O β User I/O pin (bank 3) |
| Pin 58 | I/O β User I/O pin (bank 3) |
| Pin 59 | VCCINT β Core supply (1.5 V) |
| Pin 60 | I/O β User I/O pin (bank 4) |
| Pin 61 | I/O β User I/O pin (bank 4) |
| Pin 62 | GND β Ground |
| Pin 63 | I/O β User I/O pin (bank 4) |
| Pin 64 | I/O β User I/O pin (bank 4) |
| Pin 65 | I/O β User I/O pin (bank 4) |
| Pin 66 | I/O β User I/O pin (bank 4) |
| Pin 67 | I/O β User I/O pin (bank 4) |
| Pin 68 | VCCIO4 β I/O bank 4 supply (3.3 V) |
| Pin 69 | I/O β User I/O pin (bank 4) |
| Pin 70 | I/O β User I/O pin (bank 4) |
| Pin 71 | I/O β User I/O pin (bank 4) |
| Pin 72 | I/O β User I/O pin (bank 4) |
| Pin 73 | I/O β User I/O pin (bank 4) |
| Pin 74 | I/O β User I/O pin (bank 4) |
| Pin 75 | GND β Ground |
| Pin 76 | I/O β User I/O pin (bank 4) |
| Pin 77 | I/O β User I/O pin (bank 4) |
| Pin 78 | I/O β User I/O pin (bank 4) |
| Pin 79 | I/O β User I/O pin (bank 4) |
| Pin 80 | I/O β User I/O pin (bank 4) |
| Pin 81 | I/O β User I/O pin (bank 4) |
| Pin 82 | VCCINT β Core supply (1.5 V) |
| Pin 83 | nCONFIG β Configuration start (active-low) |
| Pin 84 | nSTATUS β Configuration status (active-low) |
| Pin 85 | CONF_DONE β Configuration complete |
| Pin 86 | TCK β JTAG clock |
| Pin 87 | TMS β JTAG mode select |
| Pin 88 | TDI β JTAG data in |
| Pin 89 | TDO β JTAG data out |
| Pin 90 | MSEL0 β Configuration mode select bit 0 |
| Pin 91 | MSEL1 β Configuration mode select bit 1 |
| Pin 92 | MSEL2 β Configuration mode select bit 2 |
| Pin 93 | DCLK β Configuration clock (AS mode) |
| Pin 94 | DATA0 β Configuration data (AS mode) |
| Pin 95 | nCE β Chip enable (active-low) |
| Pin 96 | CLK0 β PLL clock input 0 |
| Pin 97 | CLK1 β PLL clock input 1 |
| Pin 98 | GND β Ground |
| Pin 99 | VCCIO1 β I/O bank 1 supply (3.3 V) |
| Pin 100 | I/O β User I/O pin (bank 1) |
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
EP1C3T100C7N is suitable for 6 applications: Industrial Control Glue Logic, Legacy ASIC Replacement / MRO, Education and FPGA Training Boards, Protocol Conversion Bridges, Low-Volume I/O Expansion, Data Acquisition Front-End.
Industrial Control Glue Logic
The EP1C3T100C7N's 2,910 logic elements and 65 user I/Os fit industrial glue-logic such as stepper-motor pulse generation, encoder quadrature decoding, and parallel-bus arbitration. The 100-TQFP package supports hand-rework on production panels, while the single PLL generates precise timing references for encoder inputs. The 1.5 V core draws low enough power that no heatsink is required even inside sealed IP65 enclosures; the commercial 0 Β°C to +85 Β°C window covers most factory-floor installations.
Recommended
Legacy ASIC Replacement / MRO
Maintenance-repair-overhaul operations use the EP1C3T100C7N to substitute end-of-life ASICs in legacy equipment where firmware revisions are frozen. The SRAM-based fabric can be reprogrammed in-circuit via JTAG to match the original ASIC's register map without PCB changes. The 100-TQFP package is footprint-compatible with many 1990s-era ASIC pinouts when bridging glue is required, and the 65 user I/Os cover the address/data bus widths of most legacy microcontrollers.
Recommended
Education and FPGA Training Boards
The EP1C3T100C7N's 100-TQFP 0.5 mm-pitch package is friendly to university lab hand-soldering, while the 2,910 logic elements provide enough headroom for full RISC-V, MIPS, and basic image-filter lab projects. Quartus Prime Lite supports the EP1C3 family free of charge, lowering the entry cost for students. The NRND status has not affected lab stocking because the C7N remains widely available in the authorized channel as of 2026-09-06.
Recommended
Protocol Conversion Bridges
The EP1C3T100C7N serves as a UART-to-SPI, I2C-to-parallel, or RS-485-to-CAN bridge in industrial gateways, where 2,910 logic elements are sufficient for protocol state machines plus FIFO buffers using the 13 M4K RAM blocks. The 1.5 V core with LVTTL/LVCMOS I/O interfaces cleanly to 3.3 V MCUs via series resistors, and the 65 user I/Os handle multiple concurrent channels. The Cyclone I single PLL derives any baud-rate clock from a single 50 MHz crystal, eliminating external clock-generator ICs.
Recommended
Low-Volume I/O Expansion
Embedded systems use the EP1C3T100C7N as an I/O-expander companion to microcontrollers that lack enough pins for parallel displays, keypads, or stepper motors. The 65 user I/Os and 13 M4K RAM blocks (58,896 bits) provide FIFO depth for SPI-to-parallel display bridges, and the 100-TQFP 0.5 mm pitch enables compact 4-layer PCBs. The single PLL generates pixel clocks directly from a 25 MHz crystal, supporting small TFT-LCD panels up to 320x240 resolution.
Recommended
Data Acquisition Front-End
The EP1C3T100C7N's 65 user I/Os and 13 M4K RAM blocks handle multi-channel ADC/DAC multiplexing and small FIR-filter preprocessing in data-acquisition front-ends. The single PLL aligns ADC sampling clocks to within 100 ps jitter, sufficient for 12-bit at 1 MSPS systems, and the LVDS-capable I/Os interface directly to modern serial ADCs. The Cyclone I family's documented logic-analyzer IP cores let engineers add protocol decoding without external logic analyzer hardware.
Recommended
Recommended Products Summary
Engineering reference data for EP1C3T100C7N β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EP1C3T100C8N | EP1C3T100C6N | EP1C3T100I7N | EP1C3T100C7 | EP1C3T100C6 | EP1C6T100C8N |
|---|---|---|---|---|---|---|---|
| Package | 100-TQFP (T100) | 100-TQFP (T100) - same | 100-TQFP (T100) - same | 100-TQFP (T100) - same | 100-TQFP (T100) - same | 100-TQFP (T100) - same | 100-TQFP (T100) - same |
| Brand | Intel | Intel - same | Intel - same | Intel - same | Intel - same | Intel - same | Intel - same |
| Family | Cyclone I | Cyclone I - same | Cyclone I - same | Cyclone I - same | Cyclone I - same | Cyclone I - same | Cyclone I - same |
| Logic Elements | 2,910 | 2,910 | 2,910 | 2,910 | 2,910 | 2,910 | 5,980 |
| Speed Grade | -7 | -8 (faster) | -6 (slower) | -7 (same speed, industrial temp) | -7 (same) | -6 (slower) | -8 (faster) |
| Operating Temperature | 0 Β°C to +85 Β°C (Commercial) | 0 Β°C to +85 Β°C (Commercial) | 0 Β°C to +85 Β°C (Commercial) | -40 Β°C to +100 Β°C (Industrial) | 0 Β°C to +85 Β°C (Commercial) | 0 Β°C to +85 Β°C (Commercial) | 0 Β°C to +85 Β°C (Commercial) |
| Maximum User I/O | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| Embedded RAM Bits | 58,896 | 58,896 | 58,896 | 58,896 | 58,896 | 58,896 | 92,160 |
| PLLs | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND | NRND |
Key Differentiators
- Speed grade -7 is the optimal balance for cost-sensitive designs (vs EP1C3T100C6N)
- Commercial temperature grade is the lowest-cost option in the family (vs EP1C3T100I7N)
- Logic density scales within the same TQFP footprint to EP1C6 (vs EP1C6T100C8N)
Design Notes
The EP1C3T100C7N requires three supply rails: VCCINT at 1.5 V (Β±5%) for the core logic, VCCIO1-VCCIO4 at 3.3 V for the four I/O banks, and a clean ground reference on every GND pin (pins 11, 19, 30, 40, 53, 62, 75, 98). Decouple each VCCINT pin with a 0.1 Β΅F X7R ceramic plus a 10 Β΅F tantalum bulk capacitor placed within 5 mm of the pin; place 0.1 Β΅F ceramics on each VCCIO pin. Insufficient decoupling is the leading cause of JTAG-chain instability and silent configuration failures during power-up. The Cyclone I device handbook recommends a 4-layer PCB with a dedicated ground plane for clean PLL operation.
The 100-pin TQFP uses a 0.5 mm lead pitch and is best routed on a 4-layer PCB with the inner layers dedicated to ground and VCCINT power planes. Each TQFP lead should connect to its pad with a short dog-bone fan-out to an inner via, keeping lead-to-via length under 2 mm to minimize stub reflections. Reserve a continuous 5 mm Γ 5 mm copper pour under the device for thermal dissipation; while the C7N's typical core power is below 0.5 W, the pour doubles as a low-impedance VCCINT path and improves JTAG signal integrity.
The single PLL in the EP1C3T100C7N drives up to two output clocks; the dedicated CLK0 (pin 96) and CLK1 (pin 97) inputs feed the PLL and must be sourced from a low-jitter crystal or oscillator with a series-termination resistor at the FPGA pin. LVDS inputs require an external 100 Ξ© differential termination resistor across the LVDS pair pins placed within 5 mm of the FPGA; missing termination causes bit-error-rate degradation on LVDS links. SSTL-2 and SSTL-3 memory interfaces require a 1.25 V / 1.5 V VREF rail on the bank and 25 Ξ© series-termination on clocks and strobes per the Cyclone I device handbook.
Configuration failure is the most common EP1C3T100C7N debug issue. Three pitfalls dominate: (1) MSEL[2:0] (pins 90-92) must match the configuration mode - AS mode = 000, JTAG-only = 101 - a wrong value silently leaves the device in reset; (2) nCONFIG (pin 83) must be driven high after VCCINT and VCCIO are stable, otherwise the configuration controller never starts; (3) the EPCS1/EPCS4 serial flash must be programmed with the correct .pof or .jic file generated by Quartus - using a .sof file in production boards will not boot autonomously. Adding a 10 kΞ© pull-up on nCONFIG and a 10 kΞ© pull-down on nSTATUS follows the reference design.
Compliance Information
RoHS and lead-free compliance confirmed via Cyclone I device handbook and IC-1101.com product page. Halogen-free status not specified in retrieved data. AEC-Q100 not applicable - this is an FPGA, not an automotive-grade IC; the C7N commercial variant is not qualified for automotive safety applications.
