Core specifications
EP3C16U256C8N is manufactured based on TSMC's 65nm low-power process and is the main model in the Cyclone III series for cost-sensitive medium and low-density applications.Cyclone III devices are the first mainstream FPGA series in the industry to integrate 5K to 200K logic units and up to 8Mbits embedded memory into a single chip under a 1.2V core voltage. The static power consumption is less than 0.25W, and its energy efficiency performance is quite outstanding among products of the same level.
In terms of logic resources, the chip contains15,408 logic cells, divided into 963 logic array blocks, each LE consists of a 4-input lookup table and a programmable register, which can flexibly implement various combinational logic and sequential logic functions.
In terms of embedded storage, the device integrates516,096 bits (approximately 504Kbits) of block RAM, equipped with56 18×18 embedded hardware multipliers, while built-in4 PLL phase locked loop units, can achieve precise management of multiple clock domains and support digital signal processing and high-speed data caching requirements.
In terms of I/O resources, this model provides168 user-programmable I/O pins, supporting multiple interface standards such as HSTL, LVCMOS, LVDS, LVPECL, LVTTL, PCI, PCI-X and SSTL, etc., to facilitate flexible docking with various sensors, actuators and communication buses.The highest operating frequency can reach402.5MHz, combined with 4 built-in PLLs, can achieve precise management of multiple clock domains and meet medium-high-speed data processing needs.
In terms of power supply configuration, the chip adopts a core 1.2V independent power supply scheme, supports flexible I/O voltage adaptive configuration, and can be matched with different I/O standards such as 1.8V, 2.5V or 3.3V to adapt peripheral circuits, but it cannot be directly connected to a 3.3V unipolar power supply.Multiple power management strategies help to accurately control the overall power consumption level of the entire system.
The package adopts256-UBGA（14mm×14mm）, the solder ball spacing is reasonable, high-density wiring can be achieved on a compact PCB, and soldering and signal integrity debugging are also relatively friendly.Operating temperature coverage0℃ to 85℃, suitable for most commercial and industrial indoor application environments.This model is lead-free and environmentally friendly, and uses pallet packaging to meet the needs of automated SMT patch production lines.
Model naming analysis
The model naming logic of EP3C16U256C8N is clear:EP3CRepresents Cyclone III series;16Represents approximately 16K logic units;U256Represents 256-pin UBGA package (14×14mm);C8Represents commercial grade operating temperature (0℃ to 85℃) and speed grade 8;NMarked as lead-free environmentally friendly version.
Core advantages
The core value of EP3C16U256C8N in product design is concentrated in the combination of 65nm low-power technology + 15.4K logic units + rich hardware resources.Power consumption control is the core differentiating feature of the Cyclone III series.This series is based on TSMC's low-power process technology and combines silicon optimization and software features to control static power consumption below 0.25W. This allows the EP3C16U256C8N to have extremely excellent energy efficiency among FPGAs of the same logic size, and is especially suitable for compact embedded devices with limited heat dissipation conditions.
The logic resources and signal processing capabilities are equally excellent.The 15,408 logic units provide ample hardware acceleration space in medium-scale logic designs. The 56 hardware multipliers can complete digital signal processing tasks without occupying additional logic resources. Common DSP algorithms such as FFT operations, filters, and convolutions can be efficiently implemented.Four PLL phase-locked loops can flexibly generate multiple clock signals with different phases and frequencies, providing accurate timing benchmarks for high-speed data acquisition and multi-protocol communication interfaces.EP3C16U256C8N is widely used in various types of equipment that require real-time processing, conversion and transmission of data from sensors, industrial buses and network interfaces. With its rich I/O resources and flexible hardware reconfiguration capabilities, it can simultaneously connect multiple peripherals with different levels of standards and speeds to complete interface bridging and data routing tasks in complex systems.
In terms of development tools, Intel Quartus II provides a complete design process from RTL synthesis, timing analysis to placement and routing, and supports the SignalTap II on-chip logic analyzer.Coupled with the mature ecosystem of the Cyclone III series and a large amount of design resources, it has a stable and reliable low threshold for novices and experienced debugging.The Nios II embedded soft-core processor and rich IP library also facilitate system-level integration, effectively shortening the project cycle from prototype verification to mass production.
Typical application scenarios
EP3C16U256C8N has a wide range of market applications, and is especially suitable for small and medium-sized logic designs and commercial-grade environment requirements.
Industrial Automation and ControlIt is the traditional main battlefield of this model.In factory automation production lines, intelligent manufacturing equipment and energy management systems, industrial control systems based on EP3C16U256C8N can realize real-time data collection and processing, equipment status monitoring and fault detection, PID control algorithm implementation, and multi-protocol communication interface support (Modbus, CAN, etc.).Engineers can use the parallel processing capabilities of FPGA to achieve high-speed pulse counting, PWM signal generation and multi-channel sensor data collection, while flexibly connecting various PLCs, sensors and actuators through 168 I/Os.
medical equipmentAlso highly dependent on EP3C16U256C8N.Typical applications include the control core of critical medical equipment such as ventilators, monitors, and oximeters.With its high-performance data processing capabilities and rich logic resources, the device can realize functions such as medical imaging, high-speed data acquisition, and real-time diagnosis.Medical equipment has extremely high requirements for the reliability of data processing and the stability of long-term continuous operation, and the mature verification of Cyclone III series devices in industrial-level applications makes them a common choice in the field of medical electronics.
communication infrastructureIt is another important battlefield for EP3C16U256C8N.In Ethernet switches, protocol conversion gateways and access network equipment, the chip can perform high-speed parsing of data packets, protocol bridging and clock data recovery, and cooperates with the PLL module to achieve precise management of multiple clock domains. It is suitable for hardware acceleration applications of medium and low complexity communication protocols.Its physical advantage of achieving high reliability in batches is particularly prominent in telecommunications systems and industrial control networks. With 168 channels of standard IO, it can easily cope with the timing convergence constraints of 100M-level network interfaces.
Video and image processingDirection, Cyclone III FPGA supports operations such as high-speed video stream acquisition and processing, image filtering and scaling.With its parallel processing architecture and DSP resources, EP3C16U256C8N can be used for real-time video splicing, multi-channel image synchronization acquisition and simple visual inspection tasks. It is widely used in industrial cameras, security monitoring systems and medical imaging equipment.
Consumer electronics and embedded system prototype verificationIt is also its traditional position.A large number of innovative experimental platforms based on EP3C16 series designs are widely used in college engineering education. Typical designs use Cyclone III series FPGA as the core and are equipped with a variety of peripheral interfaces to provide students with a unified platform from basic logic experiments to complex digital system design.Its reconfigurable features enable designers to flexibly adjust functions according to application needs and maintain a high design reuse rate from laboratory upgrades to production line deployment.EP3C16U256C8N also has wide application value in many fields such as automotive electronics, aerospace, and signal processing test and measurement.
Related models and alternative references
EP3C16U256C8N is positioned at the upper-middle level of logic scale in the Cyclone III series. The same series provides a wealth of gradient and packaging options for project selection.
Speed and temperature grade selection: Optional for projects with higher performance requirementsEP3C16U256C7, using the same 256-UBGA package and 168 I/Os, with a higher maximum operating frequency and suitable for designs with stricter timing closure requirements.Those who require industrial-grade wide-temperature applications can chooseEP3C16U256I7, the operating temperature extends to -40°C to 100°C, and is suitable for environments with large temperature differences such as outdoor equipment and vehicle-mounted terminals.If you are pursuing extreme performance, you can chooseEP3C16U256C6, the fastest speed level, suitable for scenarios with extremely high timing margin requirements.
Alternative selection of different package branches: If you need to simplify the PCB welding process and reduce manufacturing costs, you can chooseEP3C16Q240C8N, adopts 240-QFP package (32mm × 32mm, pin pitch 0.5mm), provides approximately 160 I/Os, and significantly reduces PCB wiring difficulty and patch processing threshold while keeping core logic resources and performance basically unchanged.For more stringent volume restrictions, M164 package can be usedEP3C16M164C8N, extremely compact and suitable for portable devices and space-constrained applications.
Domestic alternative reference：AGM (Aerogel core) AG16K seriesAG16KSDF256Important alternatives are provided.The SoC provides an equivalent size of approximately 16K logic units, built-in 4 PLL digital clock managers and 64Mbits on-chip SDRAM, and supports multiple high-speed I/O standards such as LVDS, SSTL, and HSTL.This model uses a 256-pin FBGA package, which corresponds to the pin functions of the EP3C16 one-to-one. The Pin-to-Pin compatible design allows customers to complete smooth migration by recompiling the configuration file without changing the PCB.AGM officially lists it as a functional replacement model for Altera EP3C16 and EP4CE15, providing a direct replacement solution for Altera Cyclone III series FPGAs.The supporting tool chain covers the AGM Studio integrated development environment, fully supporting Verilog/VHDL synthesis, RTL simulation and timing analysis. The software ecosystem has been verified by a large number of domestic alternative projects and has outstanding supply value in scenarios where supply chain risks are interrupted.
In addition, EP3C16 is compatible withEP4CE15It is highly matched in terms of logic scale. In some new projects, the corresponding density models of the Cyclone IV series can also be considered as an option for performance upgrades or supply chain backup, but the packaging type and pin compatibility need to be re-evaluated.
write at the end
EP3C16U256C8N as Intel (formerly Altera) CycloneA medium-density classic device with approximately 15.4K logic units in the III series, with 15,408 logic units, 168 user I/Os, 56 18×18 hardware multipliers, 516Kbits block RAM and 4 PLLs, as well as excellent static power consumption indicators, it has demonstrated strong engineering adaptability in the fields of industrial control, medical equipment, communication infrastructure and consumer electronics.This chip has not only been tested in a large number of mature product lines, but it is still the benchmark reference model that many medium and low-density logic design engineers weigh repeatedly in new projects.
As a chip agent distributor that has been deeply involved in the electronic components industry since 2011, Shenzhen Hongmai Electronics Co., Ltd. has long-term stock of Intel (formerly Altera) CycloneIII series EP3C16U256C8N is original in stock, and also supplies different package versions such as EP3C16Q240C8N, EP3C16F484C8N, as well as EP3C16C6, EP3C16C7, EP3C16I7 and other speed and temperature grade branch models also provide domestic AG16KSDF256 compatible alternatives and FPGA configuration chips, power management and other peripheral components, supporting factory batch direct shipment, small batch samples and technical selection assistance.If you need to inquire about prices or need to know the selection suggestions of different packages and speed levels of the same series, please feel free to contact us at any time (tel: 0755-23815611, QQ 2355878270).Shenzhen Hongmai Electronics Co., Ltd.
