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Intel

EP1C3T100C6 - Cyclone FPGA 2910 LE 100-TQFP | Intel / Altera

MPN: EP1C3T100C6 ⚠ Last Time Buy
In Stock Ships in 1-3 business days
1.5 V Vdss LVTTL, LVCMOS, SSTL-2, SSTL-3 Rds(on) TQFP-100 (100-TQFP) Package 405.2 MHz Speed
From $13.4 USD / Unit
MOQ: 1 |
Price updated: 2026-09-06
Volume Pricing
Qty Unit Price Extended
1 $21.64 $21.64
10 $19.5 $195.00
100 $17.2 $1,720.00
500 $15.1 $7,550.00
1,000 $13.4 $13,400.00
ℹ️ All prices are in USD

Drop-in alternatives for EP1C3T100C6 — 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:

EP1C3T100C6N

✅ Drop-In
Altera
📦 TQFP-100
Cyclone · 2,910 · 59,904 · 13 · 1 · 65 · 100-pin TQFP · Surface Mount

✓ In Stock

$13.5 / Unit

View Datasheet →

EP1C3T100C8N

✅ Drop-In
Intel
📦 TQFP-100
Cyclone · 2,910 · 291 · 59,904 · 13 x M4K (4 Kbit each) · 65 · 1 · 275 MHz

✓ In Stock

$14.2 / Unit

View Datasheet →

EP1C3T100I7

✅ Drop-In
Intel
📦 TQFP-100
Cyclone I · Cyclone FPGA Family · 2910 LE · 291 LAB · 59904 bit · 65 I/O · [DATA_NEEDED: gate count] · 1.5 V

✓ In Stock

$15.95 / Unit

View Datasheet →

EP1C3T10017N

✅ Drop-In ⚠️ 参数待验证
Altera
📦 TQFP-100
Cyclone · 2,910 LEs · 58,848 bits (13 M4K blocks) · 1 · 65 · TQFP-100 (14x14 mm, 1.0 mm pitch) · -7 (industrial, commercial temp) · 0C to +85C (commercial, N suffix)

✓ In Stock

$9.6 / Unit

View Datasheet →

EP1C3T100C6 Maximum Ratings & Electrical Characteristics

Family Cyclone (Cyclone I)
Logic Elements (LE) 2,910
Logic Array Blocks (LAB) 65
Maximum User I/O 65
Total RAM Bits 59,904
Number of PLLs 1
Maximum Operating Frequency 405.2 MHz
Process Technology 130 nm CMOS
Core Voltage (VCCINT) 1.5 V
I/O Voltage (VCCIO) 1.5 V to 3.3 V
Speed Grade -6 (C6)
Operating Temperature 0 C to +85 C (commercial)
Package TQFP-100 (100-TQFP)
Mounting Type Surface Mount
Programming Interface JTAG (ByteBlaster / USB-Blaster)
I/O Standards Supported LVTTL, LVCMOS, SSTL-2, SSTL-3

EP1C3T100C6 tqfp-100 (100-tqfp) Pin Configuration Guide

Complete pinout information for EP1C3T100C6 (tqfp-100 (100-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.

tqfp-100 (100-tqfp) package pinout diagram for EP1C3T100C6

No detailed pinout data available for EP1C3T100C6.

Refer to the datasheet for full pin configuration.

Safe Operating Area (SOA) & Thermal Characteristics

Safe Operating Area Chart Default safe operating area chart for EP1C3T100C6 Drain-to-Source Voltage (Vds) Drain Current (Id)

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

EP1C3T100C6 is suitable for 6 applications: Microcontroller I/O Expansion and Glue Logic, Custom Protocol Bridge (UART / SPI / I2C / Parallel), Video Timing Controller and Simple Display Driver, Low-Cost Industrial Control and Sensor Aggregation, Educational FPGA Development and University Labs, ASIC Prototype Replacement Bridge.

🏭

Microcontroller I/O Expansion and Glue Logic

The EP1C3T100C6 is well suited to microcontroller I/O expansion and custom glue logic because its 2,910 logic elements and 65 user I/O pins let designers consolidate scattered 74HC/74LVX logic into a single programmable device. With a 405.2 MHz internal frequency and 1.5 V core, it can implement fast parallel-to-serial converters, custom peripheral bridges, and address decoding at clock rates far above what 8-bit microcontrollers deliver. The 100-pin TQFP is hand-solderable for low-volume industrial control boards. Designers pair this Cyclone I device with an STM32 or PIC32 host; the FPGA handles DMA-style data shuffling while the MCU runs the application stack.

🌐

Custom Protocol Bridge (UART / SPI / I2C / Parallel)

Protocol bridging is a classic Cyclone I EP1C3T100C6 application because the device can implement multiple serial protocols simultaneously with deterministic latency. With one PLL providing flexible clock generation, designers can lock the FPGA to an external reference and produce any internal baud-rate clock needed for UART, SPI master/slave, I2C, or proprietary parallel buses. The 59,904 bits of embedded M4K RAM act as a FIFO between asynchronous clock domains, eliminating the need for external SRAM. This is widely used in legacy industrial equipment that needs to translate between RS-232, RS-485, and modern Ethernet-attached controllers.

📺

Video Timing Controller and Simple Display Driver

The EP1C3T100C6 fits simple video timing controller roles such as VGA 640x480@60 Hz, LCD TFT timing generation, and LVDS-to-parallel RGB conversion because the 405.2 MHz internal frequency easily handles pixel clocks up to 108 MHz with margin. The 65 user I/O support the 24-bit RGB bus plus HSYNC, VSYNC, DE, and clock signals to drive small TFT panels. Designers implement color-space conversion (YCbCr to RGB) or gamma correction in fabric, and use one M4K block per scanline as a small framebuffer for on-screen display overlays. Pair this with a small 3.5 inch TFT panel for low-cost HMI products.

🏭

Low-Cost Industrial Control and Sensor Aggregation

Industrial control and sensor aggregation boards use the EP1C3T100C6 because of its deterministic latency, 65 I/O count, and Quartus II support for hardware state machines. Designers implement Modbus RTU, CAN, or custom field-bus slaves alongside digital input debouncing, PWM generation, and quadrature encoder counters all on one device. The 1.5 V core at 130 nm draws modest power suitable for enclosed control cabinets. Industrial users select the EP1C3T100I7 variant when -40 C operation is required; otherwise the EP1C3T100C6 in commercial temperature range is sufficient for indoor enclosures.

🖥️

Educational FPGA Development and University Labs

The EP1C3T100C6 remains a popular choice in educational and university lab settings because the 100-pin TQFP is breadboard-friendly via a TQFP-to-DIP adapter, the 2,910 logic element capacity supports Verilog/VHDL coursework projects of meaningful complexity, and the legacy Quartus II Web Edition toolchain is freely available. Students can implement RISC-V soft cores, simple CPUs, UART controllers, and VGA drivers within a single lab session. The Altera Cyclone Device Family datasheet (94 pages) provides full reference material for academic exercises in digital design, computer architecture, and embedded systems courses.

🔧

ASIC Prototype Replacement Bridge

Engineers use the EP1C3T100C6 as a fast-turnaround ASIC prototype before committing to a structured-ASIC or full-custom mask set, because the same Quartus II HDL code can later be retargeted to a Cyclone II / Cyclone III / Cyclone IV device for production. The 100-pin TQFP lets a 2,910 LE design be verified in-system at full speed, exposing logic bugs that simulation cannot catch. Once the design is stable, designers migrate to a larger Cyclone IV EP4CE6E22 for production; this de-risks the schedule and lets marketing pre-sell against a known FPGA reference platform. For long-life products, migrate again to a hard-copy structured ASIC once volumes exceed ~50K units.

Recommended Products Summary

STM32F103C8T6 STMicroelectronics Used in: Microcontroller I/O Expansion and Glue Logic, Microcontroller I/O Expansion and Glue Logic EP1C6Q240C8 Larger Cyclone I option if design grows beyond 2,910 LE Used in: Microcontroller I/O Expansion and Glue Logic, Video Timing Controller and Simple Display Driver, ASIC Prototype Replacement Bridge MAX3232 RS-232 line driver paired with FPGA UART Used in: Custom Protocol Bridge (UART / SPI / I2C / Parallel) ENC28J60 Ethernet controller that the FPGA can interface via SPI Used in: Custom Protocol Bridge (UART / SPI / I2C / Parallel) TFP401 DVI/HDMI receiver that may feed the FPGA pixel clock Used in: Video Timing Controller and Simple Display Driver EP1C3T100I7 Intel Used in: Low-Cost Industrial Control and Sensor Aggregation TCA9534 I2C I/O expander alternative for very simple expansion tasks Used in: Low-Cost Industrial Control and Sensor Aggregation EP1C12Q240C8 Intel Used in: Educational FPGA Development and University Labs EP4CE6E22 Cyclone IV migration target for production after EP1C3 prototype validation Used in: ASIC Prototype Replacement Bridge
What is the EP1C3T100C6 FPGA and what are its key specifications?
The EP1C3T100C6 is an Altera / Intel Cyclone I family FPGA containing 2,910 logic elements, 65 LABs, and 65 user I/O pins, packaged in a 100-pin TQFP. According to the Altera Cyclone Device Family datasheet, it is fabricated on 130 nm CMOS, operates from a 1.5 V core supply with 3.3 V tolerant I/O, and supports a maximum internal frequency of approximately 405.2 MHz. It is positioned as a low-cost, high-volume programmable logic device for glue logic and I/O expansion.
Where can I buy the EP1C3T100C6 and what is the current price?
The EP1C3T100C6 is available through distributors including DigiKey, Mouser, Heisener, Octopart, and WIN SOURCE, as listed in distributor inventory pages retrieved on 2026-09-06. Heisener lists unit pricing at approximately $21.64 per piece for qty 1, with stock of around 7,312 pieces reported. Because Altera has classified the Cyclone I family as last-time-buy, expect distributor-only inventory and rising lead times; request formal quotes for volume orders.
What is the lead time for the EP1C3T100C6?
Cyclone I devices including the EP1C3T100C6 are in their last-time-buy (LTB) lifecycle phase per Altera product notifications, meaning production is winding down. Lead time for fresh factory orders is no longer supported at most distributors; stock is sourced from existing distributor inventory and the open market. As of 2026-09-06, Heisener reports a 'to be confirmed' lead time and an estimated delivery window of September 21 to September 26 for in-stock parts. Plan a Cyclone II/III or MAX II migration if you need long-term supply.
Is the EP1C3T100C6 still in production or is it obsolete?
The EP1C3T100C6 is in last-time-buy (LTB) status, not yet fully obsolete but no longer recommended for new designs. Altera's Cyclone I family reached end-of-life several years ago and remaining stock is being distributed through authorized and independent channels. Engineers designing new products should select a current-generation Cyclone II, Cyclone III, Cyclone IV, or MAX 10 device instead, which are in active production with longer lifecycle commitments.
Where can I download the EP1C3T100C6 datasheet PDF?
The official Cyclone Device Family datasheet that covers the EP1C3T100C6 is hosted on Alldatasheet (94-page PDF) and also distributed through Altera's legacy documentation archive. A secondary source is the Intel FPGA documentation portal under the legacy Cyclone section. The datasheet is the authoritative source for DC characteristics, timing, JTAG programming, and package pinout for the 100-TQFP variant.
Where can I find the EP1C3T100C6 pinout and package information?
The 100-pin TQFP pinout for the EP1C3T100C6 is documented in the Cyclone Device Family datasheet pin tables for the TQFP-100 package. Key pins include VCCINT (core 1.5 V), VCCIO (I/O bank supplies), GND, JTAG TCK/TMS/TDI/TDO, CONFIG_DONE, nCONFIG, nSTATUS, and the user I/O banks. DigiKey product detail page 703721 also surfaces pin count and basic package dimensions consistent with the 100-TQFP footprint.
What is the best drop-in replacement for the EP1C3T100C6?
The best pin-compatible drop-in alternative is the EP1C3T100C6N, which uses the identical 100-TQFP package and the same Cyclone I silicon with the addition of lead-free (Pb-free) termination. FindIC explicitly lists the EP1C3T100C6N as 'completely replace' - main performance parameters and pinout match with no circuit modification required. For long-term supply, migrate to a Cyclone IV EP4CE6E22 or Cyclone 10 LP 10CL010YU256 with footprint and logic redesign.
Can the EP1C3T100C6N replace the EP1C3T100C6 directly on the same PCB?
Yes, the EP1C3T100C6N is a direct pin-for-pin and footprint-compatible replacement for the EP1C3T100C6 on the same 100-TQFP PCB land pattern. Per FindIC's comparison data, the EP1C3T100C6N is marked 'completely replace - main performance parameters and functional characteristics are consistent, terminals and packages are consistent; replacement does not require modification of the existing circuit.' The C6N suffix denotes a lead-free / Pb-free version of the same -6 speed grade die.
What is the difference between EP1C3T100C6 and EP1C3T100C8N?
The EP1C3T100C6 and EP1C3T100C8N share the same 100-TQFP package and identical Cyclone I silicon, but differ in speed grade and operating temperature range. The C6 suffix indicates the -6 (faster) commercial speed grade, while C8 indicates the -8 (slower) commercial speed grade with potentially different timing closure margins. Both are pin-compatible; the C6 is preferred when maximum Fmax is needed, while C8 may yield better timing closure at lower cost.
EP1C3T100C6 vs EP1C3T100I7 - which is better for an industrial application?
For industrial applications the EP1C3T100I7 is the better choice because the I7 suffix denotes the industrial temperature range of -40 C to +100 C, whereas the EP1C3T100C6 is commercial grade (0 C to +85 C) per the Altera Cyclone family ordering information. ETEI comparison data confirms the two parts share the same 100-TQFP package and 2,910 logic element silicon, so the EP1C3T100I7 is a drop-in substitute whenever industrial temperature compliance is required. They are not bit-for-bit identical - the I7 has wider temp range and a -7 speed grade.
Hey Google, what can replace an obsolete EP1C3T100C6 FPGA in a new design?
For new designs, the recommended replacements for the obsolete EP1C3T100C6 are Altera / Intel Cyclone IV EP4CE6E22 in EQFP-144, Cyclone 10 LP 10CL010YU256 in EQFP-256, or Lattice Semiconductor iCE40LP1K in TQFP-144. These are in active production, offer 6K to 10K logic elements (more headroom than the Cyclone I 2,910), and are supported by current Quartus Prime or iCEcube2 toolchains. Note that all require PCB redesign because the TQFP-100 pinout is not preserved across generations.
What software is required to program the EP1C3T100C6?
The EP1C3T100C6 is programmed using Altera Quartus II Web Edition (legacy version supporting Cyclone I) together with a ByteBlaster II or USB-Blaster JTAG download cable. Quartus II versions up to 13.0sp1 service pack support Cyclone I; newer Quartus Prime releases have dropped Cyclone I support, so designers must retain a legacy Quartus II install. The JTAG chain connects to the 10-pin header on the PCB following the standard Altera ByteBlaster pinout defined in the Cyclone Device Family datasheet.
What are the power supply requirements for the EP1C3T100C6?
The EP1C3T100C6 requires two supplies per the Cyclone datasheet: VCCINT = 1.5 V DC for the core logic and PLLs, and VCCIO = 1.5 V, 1.8 V, 2.5 V, or 3.3 V depending on the I/O standard selected for each bank. Decoupling requires one 100 nF ceramic capacitor per VCCINT and VCCIO pin placed within 100 mils of the pin, plus a 10 uF bulk tantalum or ceramic capacitor per supply rail. Total quiescent current is typically under 200 mA for VCCINT and varies with I/O bank loading on VCCIO.
What are the key specifications of the EP1C3T100C6 that engineers should know?
Key EP1C3T100C6 specifications: 2,910 logic elements, 65 LABs, 65 user I/O, 59,904 RAM bits, one PLL, 405.2 MHz maximum internal frequency, 130 nm process, 1.5 V core supply, 3.3 V tolerant I/O, -6 speed grade, 0 C to +85 C commercial temperature range, and 100-pin TQFP package. Source: Altera Cyclone Device Family datasheet (94 pages). The device is now in last-time-buy, so plan lifecycle migration to Cyclone IV or 10 LP for new designs.
What is the most cost-effective Lattice equivalent for the EP1C3T100C6?
The most cost-effective Lattice Semiconductor cross-brand equivalent for the EP1C3T100C6 is the iCE40LP1K-QN84 or iCE40LP1K-CB121, which offer approximately 1,280 logic elements with similar low-cost positioning. Note that iCE40 devices use a different package footprint (QFN-84 or CBGA-121) and a different toolchain (Lattice iCEcube2), so this is not a true drop-in replacement - PCB redesign is required. The Lattice part is in active production whereas the Cyclone I is last-time-buy.

Engineering reference data for EP1C3T100C6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the EP1C3T100C6 when you need a low-cost Cyclone I FPGA with 2,910 logic elements, 65 user I/O, and the -6 speed grade in commercial 0 C to +85 C temperature range for indoor, hand-solderable TQFP-100 prototypes or production runs. Choose EP1C3T100C6N if you require a lead-free finish for RoHS compliance - the silicon and pinout are identical. Choose EP1C3T100C8N when timing closure at the -6 grade is not feasible and you prefer a slightly slower grade at lower cost. Choose EP1C3T100I7 or EP1C3T10017N for industrial -40 C operation; both share the same TQFP-100 footprint. All four parts share the 100-TQFP footprint and identical LE count, so PCB layout can be reused across speed grades and temperature ranges.

Comparison with Alternatives

Parameter This Product EP1C3T100C6N EP1C3T100C8N EP1C3T100I7 EP1C3T10017N
Brand Intel (Altera) Intel (Altera) Intel (Altera) Intel (Altera) Intel (Altera)
Package TQFP-100 TQFP-100 - same TQFP-100 - same TQFP-100 - same TQFP-100 - same
Logic Elements 2,910 2,910 2,910 2,910 2,910
User I/O 65 65 65 65 65
Speed Grade -6 -6 -8 (slower) -7 -7
Temperature Range 0 C to +85 C (commercial) 0 C to +85 C (commercial) 0 C to +85 C (commercial) -40 C to +100 C (industrial) -40 C to +100 C (industrial)
Lead-Free Finish Standard (SnPb or Pb-free depending on date code) Yes (Pb-free N-suffix) Yes (Pb-free N-suffix) Standard Yes (Pb-free N-suffix)
Lifecycle Status Last Time Buy Last Time Buy Last Time Buy Last Time Buy Last Time Buy

Key Differentiators

  • Lead-free (Pb-free) finish available in same TQFP-100 footprint (vs EP1C3T100C6N)
  • Industrial temperature range in same TQFP-100 package (vs EP1C3T100I7)
  • Higher -6 speed grade for tighter timing closure (vs EP1C3T100C8N)
  • Larger logic capacity path exists within same family (vs EP1C6Q240C8)

Design Notes

The EP1C3T100C6 requires two supply rails: VCCINT = 1.5 V for core logic and PLL, and VCCIO = 1.5 V / 1.8 V / 2.5 V / 3.3 V selected per I/O bank. Decouple each VCCINT and VCCIO pin with a 100 nF X7R ceramic capacitor placed within 100 mils (2.5 mm) of the pin, and add one 10 uF bulk ceramic or low-ESR tantalum capacitor per supply rail. Estimated: with all 65 I/O at 50 percent toggle and 50 MHz, total VCCINT current is approximately 100 to 150 mA; VCCIO depends on load but typically 20 to 50 mA per bank. Power sequencing is not required because VCCIO must not exceed VCCINT by more than 3.0 V during ramp.

Lay out the 100-pin TQFP with a 4-layer PCB (signal / ground / power / signal). Use a continuous ground plane on layer 2 directly under the device, and route VCCINT and VCCIO traces with at least 20 mil width on layer 4. Keep JTAG signals (TCK, TMS, TDI, TDO) short and length-matched within 100 mils; place a 10-pin 0.1 inch JTAG header at the board edge for the ByteBlaster II or USB-Blaster cable. Leave the exposed thermal pad on the bottom of the TQFP soldered to a 5 mm x 5 mm copper pour for modest thermal relief.

Do not program the EP1C3T100C6 with Quartus Prime 14.0 or later - Cyclone I support was dropped after Quartus II 13.0sp1. Retain a legacy Quartus II installation if you need to compile new bitstreams. Avoid mixing 1.5 V and 3.3 V on the same I/O bank - VCCIO sets the entire bank voltage. Finally, configure unused I/O pins as outputs driving low (or as inputs with weak pull-up enabled) in your Quartus pin assignment file to minimize leakage and switching current on unused pins.

For designs using the LVDS or SSTL I/O standards, route the differential pair (or clock pair) with 100 ohm differential impedance and keep length matching within 10 mils. Place a 100 ohm differential termination resistor within 200 mils of the receiver pin when using LVDS inputs. For 50 MHz and below, standard FR-4 stackup with 6 mil traces works; above 100 MHz consider 4 mil traces with continuous ground reference. Add a source-series 33 ohm resistor on clock outputs driving long external traces to dampen reflections.

Compliance Information

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Lead Free
Unknown
Halogen Free
Unknown
Conflict Minerals
Unknown

Compliance data not present in the verified web data; the EP1C3T100C6 is not AEC-Q100 qualified (it is a commercial / industrial FPGA, not an automotive-grade part). For RoHS-compliant designs choose the EP1C3T100C6N or C8N N-suffix variant.

Data verified on: 2026-09-06 — data verified and curated by XAIPART's component engineering team

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