Intel

EP3C25Q240C8N - 25K LE Cyclone III FPGA | Intel

MPN: EP3C25Q240C8N βœ“ Active
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1.2 V Vdss 240-BFQFP Package 402 MHz Speed
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Price updated: 2026-09-09
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EP3C25Q240C8N Overview

Intel EP3C25Q240C8N is a Cyclone III field-programmable gate array built on 65 nm technology, providing 24,624 logic elements, 608,256 bits of embedded memory, and 148 user I/O in a 240-pin BFQFP package. It operates from a 1.2 V core supply and is specified for a maximum frequency of 402 MHz in the supplied reference data. The C8 speed grade makes this member suitable for cost-sensitive applications that still require a substantial programmable-logic fabric.

A field-programmable gate array, or FPGA, is an integrated circuit containing configurable logic blocks, programmable interconnects, embedded memory, and input/output resources. Unlike a fixed-function application-specific integrated circuit, an FPGA can be configured after manufacture. It therefore occupies the semiconductor hierarchy between programmable logic devices and custom digital ICs, allowing engineers to implement interfaces, control logic, signal processing, and bus functions without a fabrication run.

The principal Cyclone III resource is 24,624 logic elements for combinational and sequential digital functions. The device also integrates 608,256 memory bits, giving designers capacity for FIFOs, lookup tables, buffering, and control-state storage. With 148 I/O, the EP3C25Q240C8N supports many board-level interfaces. The 240-pin BFQFP package uses through-hole leads rather than a fine-pitch surface-mount ball grid, which can simplify inspection, prototyping, and legacy assembly processes.

Architecture and technology determine the balance between programmable density, power, and performance. The listed 65 nm process and 1.2 V core supply characterize the Cyclone III generation, while the 402 MHz specification describes a maximum reference frequency rather than a guarantee for every customer design. Actual performance depends on logic placement, routing, clock resources, I/O standards, timing constraints, and power-supply integrity. The FPGA also supports boundary-scan testing, allowing pin connections to be checked without physical probes.

Typical applications include industrial control, legacy communication equipment, test and measurement hardware, motor-control interfaces, and embedded systems requiring replaceable or updateable logic. It is particularly relevant where a 240-pin through-hole FPGA is already designed in, such as an upgrade or lifecycle-support board. Engineers can use it to consolidate board functions, implement a custom peripheral, or reproduce obsolete interface behavior.

Design planning should begin with the target package, configured I/O count, required speed grade, available configuration interface, and supported power rails. Verify every pin, bank voltage, configuration mode, and timing constraint against the manufacturer documentation before schematic release. For production, assess configuration storage, JTAG access, decoupling, thermal behavior, and the availability of compatible design software and bitstream generation tools.

This product data combines the supplied manufacturer and distributor specifications, package constraints, verified commercial references, and a conservative cross-reference assessment. Because no verified pin-compatible drop-in alternative was identified, the replacement list is intentionally limited rather than padded with footprint-changing devices.

Drop-in alternatives for EP3C25Q240C8N β€” same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Variants in this series

Same-series models that are drop-in compatible with EP3C25Q240C8N (same form factor and footprint) β€” differing in Package, Speed Grade, Maximum User I/O, Process Node, Logic Elements.

Altera
Package: 240-BFQFP (PQFP-240, 32x32 mm)
Speed Grade: 8
Maximum User I/O: 160
Compare with EP3C25Q240C8N β†’
Intel
Speed Grade: 8 (indicated by C8 suffix)
Compare with EP3C25Q240C8N β†’
Intel
Package: 240-Pin PQFP (FQFP), gull-wing
Speed Grade: 8
Maximum User I/O: 148
Compare with EP3C25Q240C8N β†’
Intel
Package: 240-BFQFP / PQFP-240
Speed Grade: C8 (commercial)
Maximum User I/O: 128
Compare with EP3C25Q240C8N β†’
Intel
Package: 240-BFQFP (Plastic Enhanced QFP)
Speed Grade: 8
Process Node: TSMC 65 nm low-power
Compare with EP3C25Q240C8N β†’

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EP3C25Q240C8N Maximum Ratings & Electrical Characteristics

Product Type Field Programmable Gate Array (FPGA)
Series Cyclone III
Logic Elements 24,624
Total RAM Bits 608,256 bits
Number of I/O 148
Maximum Frequency 402 MHz
Core Voltage 1.2 V
Process Technology 65 nm
Package 240-BFQFP
Pin Count 240 pins
Mounting Style Through Hole
Speed Grade C8
Boundary-Scan Support Supported
RoHS Compliance unknown
REACH Compliance unknown
AEC-Q100 Qualification not_applicable

EP3C25Q240C8N 240-bfqfp Pin Configuration Guide

Pin configuration for EP3C25Q240C8N (240-bfqfp 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.

240-bfqfp package pinout diagram for EP3C25Q240C8N

No detailed pinout data available for EP3C25Q240C8N.

Refer to the datasheet for full pin configuration.

Typical Applications

EP3C25Q240C8N is suitable for 6 applications: Industrial Control, Legacy Communication Equipment, Test and Measurement Hardware, Motor-Control Interface, Embedded System Peripherals, Legacy Board Repair and Lifecycle Support.

🏭

Industrial Control

EP3C25Q240C8N fits industrial-control systems that need configurable timing, state machines, and multiple board-level interfaces. The device provides 24,624 logic elements and 608,256 memory bits, while 148 I/O support communication with sensors, actuators, converters, and supervisory controllers. Its 1.2 V core supply and 65 nm Cyclone III architecture are useful for legacy designs that already depend on this FPGA family. The 240-pin BFQFP package is especially valuable for through-hole assembly, inspection, and replacement workflows. Use the FPGA for deterministic control, protocol conversion, pulse generation, or machine sequencing. Before release, verify temperature grade, I/O-bank voltages, clock distribution, timing constraints, and industrial reliability requirements in the manufacturer documentation.

🌐

Legacy Communication Equipment

EP3C25Q240C8N is well suited to maintaining legacy communication equipment where a 240-pin Cyclone III FPGA is already installed. Its 24,624 logic elements can implement framing, protocol handling, channel coding, timing recovery support, and supervisory functions, while 608,256 memory bits can hold FIFOs and buffer data. The 148 I/O provide capacity for parallel buses and mixed-speed interfaces. The BFQFP package supports through-hole insertion and can simplify board repair compared with fine-pitch BGA replacement. System engineers should preserve the original configuration method, clock constraints, I/O assignments, and timing budget. Validate any replacement at the board level because the supplied cross-reference results do not identify a verified drop-in part.

πŸ”§

Test and Measurement Hardware

EP3C25Q240C8N can support configurable acquisition, triggering, sequencing, and data-routing functions in test and measurement hardware. The 24,624 logic elements allow implementation of counters, timing detectors, stimulus generators, and protocol monitors. The 608,256 memory bits are useful for capture buffers, circular FIFOs, and small waveform or event records. With 148 I/O, the FPGA can connect to parallel data converters, control ports, and test fixtures. The 402 MHz maximum-frequency reference provides a useful starting point, but actual performance depends on logic structure, placement, routing, and clock resources. The device's boundary-scan support also helps verify connections during manufacturing. Confirm pin assignments, I/O standards, timing closure, and configuration-file generation before production.

⚑

Motor-Control Interface

EP3C25Q240C8N is a practical fit for motor-control interface logic, including encoder capture, PWM generation, protection sequencing, and command translation. Its 24,624 logic elements provide capacity for synchronized control functions, while 148 I/O allow connection to gate drivers, position sensors, analog-to-digital converters, and supervisory circuits. Embedded memory can implement command queues, timing tables, and diagnostic capture. The 1.2 V core supply supports a low-voltage digital core, but the complete power and I/O-bank requirements must be confirmed. The 240-pin BFQFP package is useful for legacy through-hole control boards and accessible assembly. For safe operation, validate isolation boundaries, fault behavior, switching timing, thermal conditions, and software-generated constraints rather than relying on the 402 MHz reference as a system-level guarantee.

🧩

Embedded System Peripherals

EP3C25Q240C8N can act as a configurable peripheral and interface bridge in embedded systems. Its 24,624 logic elements support register interfaces, data packing, protocol conversion, DMA assistance, and custom control logic. The 608,256 memory bits provide enough capacity for small FIFOs and local buffers, while 148 I/O allow connection to processors, memory devices, sensors, and external buses. The 65 nm Cyclone III technology and 1.2 V core supply are appropriate for designs already standardized on this generation. Use the FPGA when software alone cannot meet latency or timing requirements, or when several fixed functions need to be consolidated. Verify configuration storage, JTAG access, reset behavior, clock domains, and I/O voltage compatibility before integrating it into a new embedded platform.

πŸ”§

Legacy Board Repair and Lifecycle Support

EP3C25Q240C8N is most directly valuable in legacy board repair and lifecycle-support programs that require a 240-pin BFQFP footprint. The device combines 24,624 logic elements, 608,256 memory bits, and 148 I/O in the original package form factor, making it suitable for maintaining equipment whose firmware, interface logic, or production test patterns are already defined. The through-hole BFQFP construction can aid visual inspection and rework. Maintain the original configuration file only after verifying that the replacement device is the same speed grade, package, voltage, and pinout. The supplied web results do not verify a true drop-in substitute, so redesign-level options should be treated separately from replacement options. Confirm authenticity, date code, stock, and assembly compatibility before procurement.

What is EP3C25Q240C8N?
EP3C25Q240C8N is an Intel/Altera Cyclone III field-programmable gate array with 24,624 logic elements, 608,256 memory bits, and 148 user I/O. According to the supplied manufacturer and distributor data, the device uses a 1.2 V core supply, 65 nm technology, and a 240-pin BFQFP package. Its architecture supports configurable digital logic, embedded memory, programmable I/O, and boundary-scan testing.
What are the key specifications of EP3C25Q240C8N that engineers should know?
The key specifications are 24,624 logic elements, 608,256 RAM bits, 148 I/O, a 402 MHz maximum-frequency reference, a 1.2 V core supply, and 65 nm technology. The device is housed in a 240-pin BFQFP package and carries the C8 speed grade. These values come from the supplied Intel/Altera reference snippets and distributor listings; operating temperature and configuration-mode details still require datasheet verification.
Where can I buy EP3C25Q240C8N online?
EP3C25Q240C8N can be sourced through authorized electronics distributors and listed suppliers, including DigiKey, LCSC, and other inventory providers. DigiKey describes the item as available to ship, while the LCSC result identifies an in-stock listing with pricing from $160.4667. As of 2026-09-09, buyers should confirm authorization, authenticity, order quantity, and current stock directly with the supplier before placing an order.
What is the price of EP3C25Q240C8N?
The supplied LCSC listing reports a price from $160.4667 for EP3C25Q240C8N as of 2026-09-09. That figure is a supplier-listed reference price, not a quotation for every order quantity. Final pricing can depend on quantity, packaging, availability, market conditions, and distributor terms. Request a current quote from an authorized seller and verify that the supplied component is genuine before procurement.
What is the lead time for EP3C25Q240C8N?
Lead time for EP3C25Q240C8N depends on distributor stock, order quantity, and packaging availability. The verified DigiKey result states that the part is offered for immediate shipment, but the supplied data does not provide a guaranteed delivery date for every region or order size. Check the distributor's live inventory and shipping terms as of 2026-09-09, especially for production quantities or repeat orders.
Is EP3C25Q240C8N in stock?
EP3C25Q240C8N is listed as in stock by LCSC in the supplied web results, while DigiKey also presents the part for purchase with a ship-today statement. Stock can change rapidly, so those statements should not be treated as a long-term availability guarantee. Contact the seller for a live quantity, date code, packaging option, and supply-chain confirmation as of 2026-09-09.
Is EP3C25Q240C8N suitable for industrial control systems?
EP3C25Q240C8N is suitable for many industrial-control designs that need programmable logic in a 240-pin through-hole package. Its 24,624 logic elements and 148 I/O provide useful resources for state machines, interface adaptation, timing control, and peripheral bridging. The supplied data does not state an industrial temperature grade, so the operating temperature and environmental qualification must be verified in the manufacturer documentation before deployment.
What is the difference between EP3C25Q240C8N and EP3C25E144C8?
The supplied comparison data identifies EP3C25Q240C8N as a 240-pin PQFP/BFQFP device with 148 I/O, while EP3C25E144C8 is a 144-pin device. The verified result does not provide enough evidence to establish identical pinout, pin assignment, package land pattern, or speed performance. EP3C25E144C8 is therefore not presented as a drop-in replacement; a PCB redesign and full interface validation would be required.
What is the difference between EP3C25Q240C8N and EP3C25F324C7N?
The supplied comparison identifies a major package and I/O difference: EP3C25Q240C8N provides 148 I/O in a PQFP-240 package, whereas EP3C25F324C7N provides 215 I/O in an FBGA-324 package. These devices are not pin-compatible. Moving to the FBGA variant would require a different land pattern, likely a PCB redesign, power and decoupling review, signal-integrity validation, and a new timing and configuration assessment.
When should I choose EP3C25Q240C8N over EP3C25E144C8?
Choose EP3C25Q240C8N when the existing design requires the 240-pin BFQFP footprint, 148 I/O, and the supplied Cyclone III resource set. EP3C25E144C8 may be considered only when a reduced 144-pin package is acceptable and the system design can tolerate a package change. The verified comparison does not prove pin-to-pin equivalence, so EP3C25E144C8 should be treated as a migration candidate rather than a drop-in replacement.
What is the best drop-in replacement for EP3C25Q240C8N?
No verified drop-in replacement for EP3C25Q240C8N was identified in the supplied cross-reference data. The available comparison candidates either use different packages or provide evidence only of general similarity, not identical pin assignments. Do not select EP3C25E144C8 or EP3C25F324C7N as drop-in parts: their 144-pin and 324-pin packages do not match the target's 240-pin BFQFP footprint. Validate any replacement against the original schematic, pinout, timing, configuration, and power requirements.
Can EP3C25E144C8 replace EP3C25Q240C8N without changing the PCB?
No, EP3C25E144C8 cannot safely be treated as a PCB drop-in replacement for EP3C25Q240C8N. The verified comparison identifies different package formats, with the target using a 240-pin PQFP/BFQFP package and the candidate using a 144-pin package. A physical footprint change would be required. Before substitution, obtain the candidate pinout, compare every signal and power pin, and review the configuration interface, timing, I/O voltage, thermal design, and software compatibility.
What is the best cross-brand equivalent for EP3C25Q240C8N?
No verified cross-brand drop-in equivalent for EP3C25Q240C8N is available in the supplied web cross-reference data. A true cross-brand replacement would need the same 240-pin package, matching pin functions, compatible power and I/O requirements, acceptable timing, and compatible configuration behavior. The supplied search results do not establish any candidate that meets all of those conditions, so a cross-brand part should not be recommended without additional manufacturer documentation and PCB-level validation.
Where can I download the EP3C25Q240C8N datasheet PDF?
The supplied verified sources provide a manufacturer-related PDF at https://www.lcsc.com/datasheet/C38625.pdf and an Altera PDF link at https://alterasemi.com/datasheet/alterasemi/EP3C25Q240C8N.pdf. An Alldatasheet result also identifies a 34-page document titled Cyclone III Device Datasheet. Use the manufacturer document as the controlling source and confirm the exact device, speed grade, package, revision, and pinout before design release.
Where can I find the EP3C25Q240C8N pinout?
The pinout should be taken from the Cyclone III device datasheet rather than inferred from the package name. EP3C25Q240C8N is listed as a 240-pin BFQFP device, but the supplied snippets do not expose the complete numbered pin table. The exact 240-pin pinout is therefore not fabricated here. Download the manufacturer datasheet, identify the Q240 package diagram, and cross-check every signal, power, ground, configuration, clock, and no-connect pin against the schematic.
What design tools are compatible with EP3C25Q240C8N?
EP3C25Q240C8N belongs to the Cyclone III family, so the relevant design flow is the Intel/Altera Quartus tool family associated with that device generation. The supplied data does not specify a particular Quartus version, device support package, or operating-system combination. Use the supported tool release for Cyclone III, install the appropriate device files, and regenerate the project constraints, synthesis results, place-and-route output, timing report, programming file, and boundary-scan description.
How much programmable logic and memory does EP3C25Q240C8N provide?
EP3C25Q240C8N provides 24,624 logic elements and 608,256 bits of embedded memory according to the supplied device data. These resources are appropriate for moderate control-logic, interface, buffering, and state-machine implementations, but they do not match the capacity of larger FPGA families. Estimate the required logic utilization, memory depth, clock domains, and I/O count before implementation, then verify the generated design for routing congestion and timing closure.
What are the power and decoupling considerations for EP3C25Q240C8N?
The supplied data specifies a 1.2 V core supply but does not provide a complete power-consumption, current-limit, or decoupling table. Place local decoupling close to the FPGA supply pins, separate noisy digital returns from sensitive analog returns, and verify the regulator transient response against the selected clock and I/O activity. Confirm all I/O-bank voltages, sequencing, ground connections, and configuration-supply requirements in the Cyclone III datasheet before schematic sign-off.
Does EP3C25Q240C8N support boundary-scan testing?
Yes, the supplied Altera material states that Cyclone III devices support boundary-scan test architecture. Boundary scan can test pin connections without physical probes and can capture functional data while the device operates normally. The exact JTAG pins, supported instructions, chain topology, and programming procedure must be confirmed in the device datasheet. Include the JTAG interface and required test access in the PCB and production-test plan.

Engineering reference data for EP3C25Q240C8N β€” comparison, design guidance, and compliance information.

Selection Guide

Choose EP3C25Q240C8N when the design already depends on a 240-pin BFQFP Cyclone III FPGA and needs 24,624 logic elements, 608,256 memory bits, and 148 I/O. It is especially appropriate for legacy industrial, communication, test, and control equipment where through-hole assembly, existing PCB layout, and retained firmware behavior matter. Choose EP3C25E144C8 only after accepting a 144-pin package change; it is not a verified drop-in replacement. Choose EP3C25F324C7N only when the design can accommodate 324-pin FBGA and the associated routing, assembly, and validation work. Before procurement, confirm current stock, operating temperature, all I/O-bank voltages, configuration requirements, and tool support. If board reuse is mandatory, prioritize the original 240-pin footprint and treat any unverified alternate as a redesign rather than a drop-in part.

Comparison with Alternatives

Parameter This Product
Brand Intel/Altera
Package 240-BFQFP
Logic Elements 24,624
RAM Bits 608,256 bits
Number of I/O 148
Maximum Frequency 402 MHz
Core Voltage 1.2 V
Process Technology 65 nm

Key Differentiators

  • Through-hole 240-pin package for legacy assembly (vs EP3C25F324C7N)
  • Balanced Cyclone III logic and memory resources (vs EP3C25E144C8)
  • Established Cyclone III design environment (vs EP3C25E144C8)

Design Notes

Use the Cyclone III datasheet to define the complete power tree before layout. The verified data specifies a 1.2 V core supply, but it does not provide all rail voltages, current limits, or sequencing requirements. Place local ceramic decoupling at the FPGA supply pins, maintain a low-impedance ground return, and verify regulator transient response under simultaneous clock, configuration, and I/O activity. Keep noisy digital paths away from sensitive analog circuitry, and do not assume that a 402 MHz maximum-frequency reference represents total device power or guaranteed system performance.

Plan the 240-pin BFQFP land pattern directly from the manufacturer package drawing. Preserve escape routing for the complete pinout, power and ground pins, clock inputs, configuration interface, and JTAG signals. Use short, wide connections for power and ground where possible, and provide accessible test points for supply, reset, clock, and configuration monitoring. The supplied data identifies the package but does not expose the numbered pin table, so do not infer pin assignments from the ordering code. Compare the final symbol, schematic, and PCB footprint against the Cyclone III documentation before release.

The 148 available I/O make the device useful for parallel buses, but I/O timing and signal integrity depend on the selected I/O standard, drive strength, termination, loading, and clock topology. Identify the target frequency of every high-speed interface and constrain it during synthesis and place-and-route. Route clocks and critical differential or source-synchronous signals first, maintain reference-plane continuity, and avoid long uncontrolled stubs. Validate the design with post-route timing, board-level simulation where needed, and oscilloscope measurements on prototypes.

A package similarity or family-level alternative is not a safe drop-in replacement. The supplied comparison data shows that EP3C25E144C8 uses a 144-pin package and EP3C25F324C7N uses a 324-pin FBGA package, while the target uses 240 pins. Before any migration, verify package pin count, pin numbering, power rails, I/O-bank compatibility, configuration mode, JTAG behavior, thermal design, and software support. Regenerate timing constraints and programming files, and perform board-level functional and boundary-scan testing before production approval.

Compliance Information

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

The supplied web data does not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements for EP3C25Q240C8N. The part is an FPGA; no AEC-Q100 qualification is stated in the supplied data.

Related Searches

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Related Components & Terms

Intel Altera EP3C25Q240C8N EP3C25E144C8 EP3C25F324C7N Cyclone III Field Programmable Gate Array FPGA programmable logic logic elements embedded memory 608,256 RAM bits 148 I/O 402 MHz 1.2 V 65 nm technology BFQFP 240-pin package through-hole package boundary-scan test JTAG Quartus RoHS REACH AEC-Q100
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