EP1C3T100C8 - Cyclone FPGA 2,910 LEs TQFP-100 | Intel | EOL
MPN: EP1C3T100C8 ✗ 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 EP1C3T100C8 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EP1C3T100C8N
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View Datasheet →EP1C3T100I7N
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View Datasheet →EP1C3T100C7
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View Datasheet →EP1C3T100C7N
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View Datasheet →EP1C3T100I7
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View Datasheet →EP1C3T100C6
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View Datasheet →EP1C3T100C6N
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View Datasheet →EP1C3T100C8 Maximum Ratings & Electrical Characteristics
| Family | Cyclone I |
| Core Process | 0.13 µm SRAM |
| Core Voltage (VCCINT) | 1.5 V |
| Logic Elements | 2,910 LEs |
| Total RAM Bits | 59,904 bits |
| M4K RAM Blocks | 13 (4 Kbit each) |
| Embedded Multipliers | Not present on EP1C3 |
| PLLs | 1 general-purpose PLL |
| Global Clock Networks | 8 |
| User I/O Pins | 65 |
| Package | TQFP-100 (14x14 mm) |
| Speed Grade | -8 (commercial) |
| Operating Temperature | 0C to +85C (commercial) |
| Mounting Type | Surface Mount |
| Configuration Modes | AS, PS, JTAG |
| I/O Standards | LVTTL, LVCMOS, SSTL-2/3, LVDS, RSDS |
| RoHS Status | Compliant |
| Lifecycle | EOL per PDN1810 (since 2019) |
EP1C3T100C8 Pin Configuration
| Pin 1 | I/O — User I/O pin (bank 1) |
| Pin 2 | I/O — User I/O pin (bank 1) |
| Pin 3 | I/O — User I/O pin (bank 1) |
| Pin 4 | I/O — User I/O pin (bank 1) |
| Pin 5 | VCCIO1 — I/O bank 1 supply voltage |
| Pin 6 | I/O — User I/O pin (bank 1) |
| Pin 7 | I/O — User I/O pin (bank 1) |
| Pin 8 | I/O — User I/O pin (bank 1) |
| Pin 9 | I/O — User I/O pin (bank 1) |
| Pin 10 | I/O — User I/O pin (bank 1) |
| Pin 11 | GND — Ground |
| Pin 12 | I/O — User I/O pin (bank 2) |
| Pin 13 | I/O — User I/O pin (bank 2) |
| Pin 14 | I/O — User I/O pin (bank 2) |
| Pin 15 | I/O — User I/O pin (bank 2) |
| Pin 16 | VCCIO2 — I/O bank 2 supply voltage |
| Pin 17 | I/O — User I/O pin (bank 2) |
| Pin 18 | I/O — User I/O pin (bank 2) |
| Pin 19 | I/O — User I/O pin (bank 2) |
| Pin 20 | I/O — User I/O pin (bank 2) |
| Pin 21 | GND — Ground |
| Pin 22 | I/O — User I/O pin (bank 3) |
| Pin 23 | I/O — User I/O pin (bank 3) |
| Pin 24 | I/O — User I/O pin (bank 3) |
| Pin 25 | I/O — User I/O pin (bank 3) |
| Pin 26 | VCCIO3 — I/O bank 3 supply voltage |
| Pin 27 | I/O — User I/O pin (bank 3) |
| Pin 28 | I/O — User I/O pin (bank 3) |
| Pin 29 | I/O — User I/O pin (bank 3) |
| Pin 30 | I/O — User I/O pin (bank 3) |
| Pin 31 | GND — Ground |
| Pin 32 | I/O — User I/O pin (bank 4) |
| Pin 33 | I/O — User I/O pin (bank 4) |
| Pin 34 | I/O — User I/O pin (bank 4) |
| Pin 35 | I/O — User I/O pin (bank 4) |
| Pin 36 | VCCIO4 — I/O bank 4 supply voltage |
| Pin 37 | I/O — User I/O pin (bank 4) |
| Pin 38 | I/O — User I/O pin (bank 4) |
| Pin 39 | I/O — User I/O pin (bank 4) |
| Pin 40 | I/O — User I/O pin (bank 4) |
| Pin 41 | GND — Ground |
| Pin 42 | CLK0 — Clock input 0 (LVTTL/LVCMOS) |
| Pin 43 | CLK1 — Clock input 1 (LVTTL/LVCMOS) |
| Pin 44 | I/O — User I/O pin (bank 4) |
| Pin 45 | I/O — User I/O pin (bank 4) |
| Pin 46 | VCCINT — Core supply voltage (1.5 V) |
| Pin 47 | I/O — User I/O pin (bank 4) |
| Pin 48 | I/O — User I/O pin (bank 4) |
| Pin 49 | I/O — User I/O pin (bank 4) |
| Pin 50 | I/O — User I/O pin (bank 4) |
| Pin 51 | GND — Ground |
| Pin 52 | I/O — User I/O pin (bank 4) |
| Pin 53 | I/O — User I/O pin (bank 4) |
| Pin 54 | I/O — User I/O pin (bank 4) |
| Pin 55 | I/O — User I/O pin (bank 4) |
| Pin 56 | VCCIO4 — I/O bank 4 supply voltage |
| Pin 57 | I/O — User I/O pin (bank 4) |
| Pin 58 | I/O — User I/O pin (bank 4) |
| Pin 59 | I/O — User I/O pin (bank 4) |
| Pin 60 | I/O — User I/O pin (bank 4) |
| Pin 61 | GND — Ground |
| Pin 62 | I/O — User I/O pin (bank 4) |
| Pin 63 | I/O — User I/O pin (bank 4) |
| Pin 64 | I/O — User I/O pin (bank 4) |
| Pin 65 | I/O — User I/O pin (bank 4) |
| Pin 66 | VCCA_PLL — PLL analog supply (1.5 V) |
| Pin 67 | I/O — User I/O pin (bank 4) |
| Pin 68 | I/O — User I/O pin (bank 4) |
| Pin 69 | I/O — User I/O pin (bank 4) |
| Pin 70 | I/O — User I/O pin (bank 4) |
| Pin 71 | GND — Ground |
| Pin 72 | I/O — User I/O pin (bank 4) |
| Pin 73 | I/O — User I/O pin (bank 4) |
| Pin 74 | I/O — User I/O pin (bank 4) |
| Pin 75 | I/O — User I/O pin (bank 4) |
| Pin 76 | VCCD_PLL — PLL digital supply (1.5 V) |
| Pin 77 | nCONFIG — Configuration start (active-low) |
| Pin 78 | nSTATUS — Configuration status (active-low) |
| Pin 79 | CONF_DONE — Configuration done indicator |
| Pin 80 | DCLK — Configuration clock input |
| Pin 81 | TDI — JTAG test data input |
| Pin 82 | TMS — JTAG test mode select |
| Pin 83 | TCK — JTAG test clock |
| Pin 84 | TDO — JTAG test data output |
| Pin 85 | MSEL0 — Configuration mode select 0 |
| Pin 86 | MSEL1 — Configuration mode select 1 |
| Pin 87 | DATA0 — Configuration data input (AS/PS) |
| Pin 88 | I/O — User I/O pin (bank 4) |
| Pin 89 | I/O — User I/O pin (bank 4) |
| Pin 90 | I/O — User I/O pin (bank 4) |
| Pin 91 | I/O — User I/O pin (bank 4) |
| Pin 92 | VCCIO4 — I/O bank 4 supply voltage |
| Pin 93 | I/O — User I/O pin (bank 4) |
| Pin 94 | I/O — User I/O pin (bank 4) |
| Pin 95 | I/O — User I/O pin (bank 4) |
| Pin 96 | I/O — User I/O pin (bank 4) |
| Pin 97 | GND — Ground |
| Pin 98 | I/O — User I/O pin (bank 1) |
| Pin 99 | I/O — User I/O pin (bank 1) |
| Pin 100 | I/O — 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
EP1C3T100C8 is suitable for 6 applications: Industrial Glue Logic Replacement, Custom Peripheral Bridge (UART/SPI/I2C to Parallel), Legacy Peripheral Replacement and Form-Fit-Function Drop-In, Educational and Prototyping Boards, Motor-Control Co-Processor, Production Test Fixture Controller.
Industrial Glue Logic Replacement
The EP1C3T100C8's 2,910 LEs and 100-pin TQFP footprint make it a one-chip replacement for entire boards of 74-series glue logic in industrial controllers. Its 65 user I/Os handle address decoding, bus arbitration, and interrupt steering at deterministic sub-25 ns propagation delays, while the 1.5 V core keeps power dissipation under 200 mW for fanless DIN-rail enclosures. Designers can migrate legacy discrete logic schematics into a single Quartus II project, cutting PCB area by 60-80% and BOM lines by dozens. The commercial 0C to +85C temperature range covers most indoor factory environments when paired with industrial-grade peripheral ICs.
Recommended
Custom Peripheral Bridge (UART/SPI/I2C to Parallel)
With 59,904 bits of M4K block RAM and 8 global clock networks, the EP1C3T100C8 is well suited as a multi-protocol peripheral bridge that converts UART, SPI, and I2C traffic into a parallel bus for legacy microcontrollers. The 13 M4K blocks implement 16-byte-deep FIFOs per channel, while the 1 PLL derives domain-crossing clocks for each interface. JTAG-based in-system programming simplifies field firmware updates over the same JTAG header used for boundary-scan. Cyclone I's 0.13 µm process gives deterministic timing that ASIC replacement designs require when emulating discrete UARTs (16550) or SPI peripherals in industrial PCs.
Recommended
Legacy Peripheral Replacement and Form-Fit-Function Drop-In
The EP1C3T100C8 is widely used as a firmware-driven replacement for obsolete peripheral ICs whose original silicon is no longer available. Its 100-pin TQFP and 65 user I/Os match many 1990s-era peripheral footprints, allowing drop-in board replacements where only the FPGA bitstream is rewritten. Designers can replicate custom ASIC functions, video sync separators, or proprietary bus controllers while keeping the original PCB. The 1.5 V core plus selectable VCCIO banks (1.5/1.8/2.5/3.3 V) ensures compatibility with both legacy 5 V-tolerant buses via external resistors and modern 1.8 V LVCMOS peripherals on the same board.
Recommended
Educational and Prototyping Boards
University digital-logic labs and FPGA training courses have long standardized on the EP1C3T100C8 because the 100-pin TQFP is hand-solderable for student assembly and the 2,910 LE capacity is large enough for full RISC-V or MIPS soft-core implementations, yet small enough to fit in low-cost Altera/Intel DE-series and Terasic training boards. The free Quartus II Web Edition supports the entire Cyclone I family, removing licensing barriers for coursework. With 13 M4K RAM blocks and 1 PLL, students can implement UARTs, VGA controllers, and simple CPUs in a single device while learning HDL design flows.
Recommended
Motor-Control Co-Processor
The EP1C3T100C8 serves as a deterministic co-processor next to a microcontroller in BLDC and stepper motor drives, offloading PWM generation, encoder quadrature decoding, and field-oriented control loops at sub-microsecond jitter. Its 1 PLL multiplies the encoder reference clock to the PWM switching frequency (typically 20-100 kHz), while 13 M4K blocks store sine tables and current-loop history. The 65 user I/Os accommodate 3-phase gate drivers, Hall sensors, and RS-485 feedback without an I/O expander. Industrial-temperature grade (-40C to +100C) variants like the EP1C3T100I7N are preferred for under-hood and outdoor motor installations.
Recommended
Production Test Fixture Controller
In-circuit test (ICT) and functional test fixtures use the EP1C3T100C8 as a flexible pattern generator and boundary-scan controller. The 65 user I/Os drive test pins directly, while JTAG mode enables live reconfiguration of test patterns per SKU without changing fixture hardware. The 1.5 V core and 8 global clocks provide deterministic timing critical for sub-microsecond test windows, and the LVDS-capable I/Os support high-speed differential probing. Engineers can store hundreds of test patterns in external EPCS flash and load them on-the-fly via the JTAG or AS configuration port.
Recommended
Recommended Products Summary
Engineering reference data for EP1C3T100C8 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EP1C3T100C8N | EP1C3T100I7N | EP1C3T100C7N | EP1C3T100C6N |
|---|---|---|---|---|---|
| Brand | Intel | Intel | Intel | Intel | Intel |
| Package | TQFP-100 | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same |
| Logic Elements | 2,910 LEs | 2,910 LEs | 2,910 LEs | 2,910 LEs | 2,910 LEs |
| Speed Grade | -8 (slowest) | -8 | -7 (faster) | -7 (faster) | -6 (fastest) |
| Temperature Grade | Commercial (0C to +85C) | Commercial | Industrial (-40C to +100C) | Commercial | Commercial |
| Lead-Free (RoHS) | No (SnPb) | Yes (RoHS) | Yes (RoHS) | Yes (RoHS) | Yes (RoHS) |
| User I/O Pins | 65 | 65 | 65 | 65 | 65 |
| Core Voltage | 1.5 V | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
| Lifecycle | EOL (PDN1810, since 2019) | EOL (PDN1810) | EOL (PDN1810) | EOL (PDN1810) | EOL (PDN1810) |
| Approx. Unit Price (qty 1000) | $9.75 | $10.50 | $14.20 | $11.80 | $13.50 |
Key Differentiators
- Commercial temperature, lead-free RoHS finish in same TQFP-100 footprint (vs EP1C3T100C8)
- Faster -7 speed grade for timing-critical designs in same TQFP-100 package (vs EP1C3T100C7N)
- Industrial temperature range for harsh environments in same TQFP-100 package (vs EP1C3T100I7N)
Design Notes
The EP1C3T100C8 requires a clean 1.5 V VCCINT supply with a tolerance of +/-5% and a 3.3 V, 2.5 V, 1.8 V, or 1.5 V VCCIO per bank. Use a low-dropout regulator (e.g., TI TPS7A4515 or equivalent) for VCCINT, and place 0.1 µF + 10 µF decoupling capacitors within 5 mm of each VCCINT pin per the Cyclone I datasheet decoupling recommendations. Estimated: with all 65 user I/Os toggling at 100 MHz, dynamic current peaks can reach 300-400 mA on VCCINT; budget the LDO for at least 500 mA. For PLL supplies (VCCA_PLL, VCCD_PLL), use a pi-filter (ferrite bead + 10 µF + 0.1 µF) to isolate PLL noise from the core supply.
Route configuration pins (nCONFIG, nSTATUS, CONF_DONE, DCLK, MSEL0, MSEL1, DATA0) away from switching I/O signals to prevent corruption during configuration. Place the EPCS configuration memory within 25 mm of the FPGA DATA0/DCLK traces for AS mode and keep those traces impedance-controlled to 50 Ω. The 100-pin TQFP has a 0.5 mm pitch; use 0.15 mm trace/space rules and a 4-layer PCB with a dedicated ground plane for return paths. JTAG chain integrity should be verified with the Quartus II programmer before any production programming step.
Do not mix 5 V signals directly with the EP1C3T100C8 I/O banks - the absolute maximum VCCIO is 4.6 V and any over-voltage will permanently damage the device. Use a level translator (e.g., SN74AVC8T245) for 5 V-to-3.3 V interfacing, or a resistive divider with 10 kΩ / 20 kΩ for low-speed inputs. Avoid driving JTAG TCK faster than 25 MHz; higher rates can cause boundary-scan failures on long JTAG chains. When migrating from EP1C3T100C8 to EP1C3T100I7N, verify the temperature range in the design specification - industrial parts may require a different thermal pad layout and copper-pour sizing.
For 100-pin TQFP (14x14 mm, 0.5 mm pitch), use a 4-layer stack-up with signal-top, GND-plane, power-plane, signal-bottom to provide continuous return paths for high-speed LVDS and clock traces. Place VCCIO and VCCINT decoupling as a 0.1 µF X7R capacitor directly under each power pin and a 10 µF bulk capacitor within 10 mm. Route clock inputs (CLK0-CLK1) as microstrip with 50 Ω impedance and length-matched to within 200 mils if used as a differential pair. Keep PLL analog supplies (VCCA_PLL, VCCD_PLL) on a quiet island of the power plane, separated from digital VCCINT by at least 3 mm.
Compliance Information
EP1C3T100C8 is SnPb (non-lead-free); choose EP1C3T100C8N suffix variant for RoHS compliance. Part is EOL per PDN1810 since 2019. AEC-Q100 not applicable to commercial-grade FPGAs; use industrial-temperature variant for harsh environments.
