FPGA & CPLD
Products (6357)
EP2C35F484C6 - Cyclone II FPGA 33K LE 484-FBGA | Intel
The Intel (Altera) EP2C35F484C6 is a Cyclone II family Field-Programmable Gate Array (FPGA) fabricated on a 90 nm low-k process, delivering 33,216 logic elements, 483,840 bits of embedded RAM, and 322 maximum user I/O pins in a 484-ball FineLine BGA package. The device operates from a 1.2 V core supply with I/O banks supporting 1.5 V, 1.8 V, 2.5 V, and 3.3 V LVCMOS/LVTTL interfaces, and is offered in a commercial temperature grade (0 C to +85 C) with -6 speed grade performance. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that allows hardware designers to implement arbitrary digital logic functions via a configuration bitstream loaded into on-chip SRAM. FPGAs sit within the broader hierarchy of integrated circuits: programmable logic device -> FPGA -> programmable logic -> digital IC -> semiconductor. They differ from ASICs in that they are reprogrammable after manufacture, and from CPLDs in that they contain much larger amounts of distributed and block memory plus dedicated multiplier blocks. The Cyclone II architecture integrates embedded 18 x 18 multipliers (35 total), M4K RAM blocks (105 total, 4 Kbit each), and a global clock network with up to 16 PLLs for flexible clock management. Each logic element (LE) contains a 4-input look-up table, a programmable register, and a carry chain, supporting efficient implementation of arithmetic, register, and state-machine logic at speeds up to 250 MHz internal operation. Configuration is supported via active serial (AS), passive serial (PS), and JTAG modes using the dedicated configuration pins. Typical applications for the EP2C35F484C6 include industrial motor control, video processing pipelines, telecommunications line cards, embedded DSP, and prototyping platforms for ASIC emulation. The 322 user I/O count and 35 dedicated multipliers make it well suited for video buffering and parallel DSP kernels; the low unit cost and Quartus II tool support position it as a mainstream low-cost FPGA for cost-sensitive volume production. When designing with this part, ensure that the four configuration pins (MSEL[3:0]) are strapped to select the desired configuration mode and that VCCINT (1.2 V) and VCCA (2.5 V PLL analog supply) are decoupled with 0.1 uF ceramic capacitors placed within 100 mils of each supply pin. The device is in production; the Cyclone II family has been the workhorse of low-cost FPGAs since 2004, but Intel now positions Cyclone IV/V/10 as the active roadmap successors.
EP2C35F484C6N - Cyclone II FPGA 33K LE 484-BGA | Altera / Intel
The Altera (Intel) EP2C35F484C6N is a Cyclone II family field-programmable gate array (FPGA) housed in a 484-ball fine-line BGA package. It delivers 33,216 logic elements, 483,840 total RAM bits, and 322 user I/O pins, with a core supply of 1.2V and I/O supply of 3.3V. The device is built on a low-power 90 nm CMOS process and supports configuration via passive serial, active serial, and JTAG modes. According to the Cyclone II Device Handbook, the EP2C35 is positioned in the upper-mid density tier of the family, between the EP2C20 and the larger EP2C50/EP2C70. It contains 35 embedded 18x18 multipliers, four phase-locked loops, and 105 M4K RAM blocks. The F484 package variant integrates all 322 user I/Os in a 1.0 mm ball-pitch BGA suitable for high-density prototype boards, evaluation kits, and legacy production lines that still depend on the Cyclone II family. Industrial-grade 'C6N' speed grade parts operate across a commercial 0C to 85C ambient range and target low-volume, long-life industrial and educational platforms. An FPGA (Field-Programmable Gate Array) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnect, and embedded memory and DSP resources that the user defines via a hardware description language. FPGAs sit at the top of the programmable-logic hierarchy alongside CPLDs and are widely used for parallel signal processing, custom interfacing, glue logic, and prototyping ASICs before mask production. Cyclone II devices use SRAM configuration cells that must be loaded at power-up from a serial configuration flash. The Cyclone II family uses a 1.2V core, 4-input LUT-based logic, and dedicated 18x18 multipliers for DSP. Embedded M4K RAM blocks (4 kbit each) provide true dual-port memory up to 36-bit wide, and four PLLs support clock multiplication, phase shifting, and frequency synthesis. The 484-FBGA package exposes 322 user I/Os supporting LVDS, LVTTL, LVCMOS, SSTL, and PCI I/O standards, plus dedicated clock inputs and global clock networks. Typical applications for the EP2C35F484C6N include industrial motor control boards, factory automation controllers, university digital-logic teaching labs, communications glue logic, video processing pre-processors, and legacy telecom base-band interfaces. The 33,216 logic-element count comfortably supports soft-core processors such as Nios II, custom state machines, and mid-density DSP pipelines. When designing with this part, ensure the configuration flash (EPCS) is sized for the 33K-LE bitstream and that JTAG pin mapping matches the 484-BGA pinout. Decoupling follows the standard 1.2V core / 3.3V I/O split, and unused user I/Os should be left floating or driven to a defined logic level per Cyclone II guidelines. This page synthesizes distributor pricing, same-brand Cyclone II drop-in variants, and Cyclone II-specific design notes not consolidated in any single manufacturer document.
EP2C35F484C7 - Cyclone II FPGA 33K LE 484-FBGA | Intel
The Intel (Altera) EP2C35F484C7 is a Cyclone II Field-Programmable Gate Array (FPGA) delivering 33,216 logic elements, 483,840 bits of embedded memory, and 35 embedded 18x18 multipliers, housed in a 484-pin FineLine BGA (FBGA-484) package. Built on a 90 nm low-k dielectric CMOS process, the Cyclone II family balances density, performance, and cost for high-volume, logic-rich applications. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit composed of configurable logic blocks (CLBs), programmable interconnects, and dedicated silicon resources such as block RAM (BRAM) and DSP blocks. FPGAs sit within the broader category of programmable logic devices (PLDs), bridging the gap between fixed-function ASICs and software-programmable microcontrollers. The Cyclone II architecture organizes logic into Logic Array Blocks (LABs) of 16 Logic Elements (LEs) each, with embedded memory columns and multiplier blocks distributed across the fabric to minimize routing delay and maximize deterministic performance. Key features of the EP2C35F484C7 include 322 maximum user I/O pins, four phase-locked loops (PLLs) for clock management, support for external memory interfaces such as DDR, DDR2, and QDRII SRAM, and a flexible configuration scheme supporting JTAG, Passive Serial (PS), and Active Serial (AS) modes. The device supports LVDS, LVTTL, LVCMOS, SSTL, and HSTL I/O standards, enabling direct interfacing with modern processors, memories, and high-speed peripherals. Typical applications for the EP2C35F484C7 span cost-sensitive digital signal processing, motor control, industrial automation, video processing, and protocol bridging. The combination of 33K logic elements, 35 hardware multipliers, and 484-ball FBGA packaging makes the device particularly attractive for medium-density DSP pipelines, motor and motion controllers, and telecommunications infrastructure where deterministic hardware-level processing outperforms general-purpose processors. When designing with this Cyclone II device, engineers should leverage the Altera/Intel Quartus II design suite for synthesis, place-and-route, and timing closure. The FBGA-484 package requires careful PCB layout with controlled-impedance traces, matched-length nets for DDR interfaces, and multiple decoupling capacitors placed close to each power pin to maintain signal integrity at the device's high toggle rates. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes not found in a single manufacturer datasheet view. According to the Cyclone II Device Handbook, the EP2C35F484C7 is supported by Quartus II versions 7.2 through 13.0sp1, providing long design-software continuity for legacy and industrial deployments.
EP2C35F484C7N - Cyclone II FPGA, 33K LEs, 484-FBGA | Intel (Altera)
The Intel (formerly Altera) EP2C35F484C7N is a Cyclone II Field-Programmable Gate Array (FPGA) integrating 33,216 logic elements (LEs), 483,840 bits of embedded RAM, and 322 user I/O pins in a 484-ball FineLine BGA (FBGA) package. Built on a low-cost 90 nm CMOS process, the device operates from a 1.2 V core supply with separate VCCIO bank rails and supports system frequencies up to approximately 402 MHz through its global clock tree. What is a Cyclone II FPGA? The Cyclone II family is Intel's (originally Altera's) second-generation low-cost SRAM-based FPGA series, positioned below the Stratix high-performance line. As an FPGA, the EP2C35F484C7N belongs to the broader category hierarchy of programmable logic device (PLD) -> FPGA -> SRAM-based FPGA -> low-cost FPGA. It targets cost-sensitive, volume-production designs where ASIC NRE is not justified, providing parallel logic, embedded memory blocks (M4K), and DSP blocks (multipliers) on a single reconfigurable fabric. Key features include up to 35,000 LEs, 35 embedded 18x18 multipliers (DSP blocks) suitable for low-density signal processing, four phase-locked loops (PLLs) for clock synthesis and skew management, and support for external memory interfaces including DDR, DDR2, and QDRII SRAM through dedicated DQS pins. The device consumes approximately 200 mW of static power and supports hot-socketing and configuration via JTAG, AS, PS, or PPA modes. Typical applications include industrial motor control, video processing pipelines, low-density wireless baseband logic, consumer electronics glue logic, and PCI/PCI Express endpoint bridges. The 484-FBGA package provides ample I/O count for memory-bus fan-out and parallel sensor aggregation. Design tip: Use Intel's Quartus II (or the open-source Yosys + nextpnr flow for cost-limited builds) for synthesis, placement, and timing closure. Place decoupling capacitors within 5 mm of every VCC/VCCIO/VCC_PLL power pin and provide a continuous ground plane beneath the BGA to suppress SSO noise. This page synthesizes distributor pricing, drop-in Altera Cyclone II alternatives, and practical Quartus II design notes not collected in a single location on the manufacturer datasheet.
EP2C35F484C8 - Cyclone II FPGA 33K LEs 484-FBGA | Intel / Altera
The Intel / Altera EP2C35F484C8 is a member of the low-cost Cyclone II FPGA family, offering 33,216 logic elements (LEs), 483,840 bits of embedded RAM, and 322 total pins (35 user I/O banks support up to 322 user I/Os) in a 484-ball FineLine BGA (FBGA-484) package. It targets cost-sensitive high-volume applications where ASIC-class integration is required without ASIC NRE, including industrial control, video processing, and communications line cards. Background: A Field Programmable Gate Array (FPGA) is a semiconductor IC built around an array of configurable logic blocks (CLBs / LEs) connected by programmable interconnect. FPGAs sit in the programmable logic hierarchy alongside CPLDs, with FPGAs offering higher logic density and richer DSP/memory resources. The Cyclone II family positioned Intel/Altera in the low-cost FPGA segment, providing ASIC-level integration at FPGA pricing for consumer, industrial, and wireless applications. Key features include 35 embedded 18x18 multipliers for DSP, up to 4 PLLs per device for clock management, support for external memory interfaces including DDR/DDR2/QDRII SDRAM, and 1.2V core operation with hot-socketing support. Configuration is handled via passive serial (PS), fast passive parallel (FPP), active serial (AS), or JTAG modes, supported by industry-standard Quartus II design tools. The device is fabricated on a 90nm low-k CMOS process. Typical applications include video surveillance and image processing pipelines, industrial motor control and factory automation controllers, low-cost wireline/wireless baseband processing, PCI/PCI-X bridge designs, and display controllers. The combination of high logic density, embedded multipliers, and broad memory interface support makes the EP2C35F484C8 particularly well-suited to mid-complexity DSP and control-plane designs. Design consideration: Successful PCB layout requires careful attention to the 484-ball BGA fanout, power distribution (VCCINT 1.2V, VCCIO banked 1.5V/1.8V/2.5V/3.3V), and decoupling. Use a multi-layer PCB with dedicated power and ground planes; place 0.1uF and 10uF decoupling capacitors close to each power pin. The Cyclone II datasheet provides reference board layouts and signal-integrity guidelines that should be followed. This page synthesizes distributor pricing, drop-in same-family variants, and practical FPGA design notes not aggregated in a single manufacturer document.
EP2C35F484C8N - Cyclone II FPGA, 33K LEs, 484-FBGA | Intel
The Intel (formerly Altera) EP2C35F484C8N is a low-cost Cyclone II family FPGA delivering 33,216 logic elements, 483,840 bits of embedded memory (M4K blocks), and 322 user I/Os in a 484-pin FineLine BGA package. Built on a 90 nm process, it operates from a 1.2 V core supply and supports up to four phase-locked loops with performance rated up to 402 MHz internal operation. An FPGA (Field Programmable Gate Array) is a semiconductor integrated circuit whose logic function is defined after manufacturing through user programming. FPGAs occupy a unique tier in the digital design hierarchy: more capable than discrete logic (74-series gates) and CPLDs (Complex Programmable Logic Devices), but lower-cost and lower-power than ASICs (Application-Specific Integrated Circuits). They are widely used for glue logic, digital signal processing front-ends, custom peripheral buses, and pre-ASIC prototyping. Within that taxonomy, the Cyclone II series specifically targets cost-sensitive, high-volume applications where every logic element and I/O pin must be maximized per dollar. Key features include 35,000 LEs (the Cyclone II nomenclature counts logical resources slightly above the LE name, equivalent to roughly 33K fully-routed logic elements), up to 483,840 RAM bits arranged in 4-kbit M4K blocks supporting true dual-port operation, and 35 embedded 18x18 multipliers for DSP applications. The device also includes four PLLs and supports LVDS I/O standards on selected pins. The Cyclone II architecture uses a 2D row/column interconnect backed by SRAM configuration memory. Its 90 nm process allows high logic density at low static power. Configuration is loaded from a passive serial, JTAG, or EPCS configuration device. The 484-FBGA package exposes 322 user I/Os, giving designers generous headroom for memory buses, video interfaces, and parallel connectivity. Typical applications include industrial motor control, video processing and display bridges, telecom line cards, low-cost DSP co-processing, and pre-silicon ASIC prototyping. The combination of abundant DSP blocks and external memory interfaces makes it well suited to image-pipeline front-ends. Per the manufacturer datasheet, the EP2C35F484C8N speed grade 8 corresponds to a -8 commercial temperature rating, balancing timing margin against cost. When designing with this device, plan a multi-rail power tree for 1.2 V VCCINT, 3.3 V VCCIO, and PLL analog supplies, with careful decoupling on every VCCIO bank. The 484-FBGA demands a multi-layer PCB with microvia-in-pad stackup; signal integrity on LVDS pairs requires matched-length routing. Although the part is mature, lead-time and lifecycle pressure have shifted many new designs to Cyclone IV or Cyclone V equivalents. This page synthesizes distributor pricing, drop-in alternatives from the Cyclone II family, and practical design notes not found in the manufacturer datasheet alone.
EP2C35F484I6N - 33K LE Cyclone II FPGA, 484-FBGA | Intel
The Intel EP2C35F484I6N is a low-cost Cyclone II field-programmable gate array (FPGA) from the Altera Cyclone II device family, delivering 33,216 logic elements, 484 maximum user I/O pins, and 1.1 Mbit of on-chip embedded memory in a 484-ball fine-pitch BGA (FBGA-484) package. Built on a 1.2 V CMOS process, it operates across an industrial temperature range of -40C to +85C and supports a maximum internal clock frequency of approximately 402.5 MHz. The device integrates up to 150 embedded 18x18 multipliers for DSP operations and high-speed external memory interfaces for DDR/DDR2 SDRAM and QDRII SRAM. An FPGA (field-programmable gate array) is a reconfigurable semiconductor device whose logic function is defined by a customer-supplied bitstream rather than hard-wired during fabrication. The Cyclone II family sits within the broader programmable logic taxonomy: FPGA -> programmable logic -> logic IC -> integrated circuit -> semiconductor. Unlike microcontrollers which execute sequential firmware, FPGAs implement parallel hardware logic that can be updated in the field, making them ideal for prototyping, low-volume production, and applications where hardware parallelism outperforms software. The EP2C35 specifically targets the mid-density segment with 33K logic elements, balancing cost per logic element against capability. Key features of the EP2C35F484I6N include 2,100 Logic Array Blocks (LABs) organized in 33,216 logic elements (LEs), 483,840 bits of embedded RAM (M4K blocks), 4 phase-locked loops (PLLs) for clock management, and 315 embedded 18x18 multipliers in the Cyclone II family (the EP2C35 provides 35 embedded multipliers per Cyclone II datasheet). The device supports multiple I/O standards including LVDS, SSTL, HSTL, PCI, and PCI-X through configurable user I/O banks. Its 1.2 V core voltage with 1.2 V/2.5 V/3.3 V I/O supplies enables mixed-voltage system design. The Cyclone II architecture uses a 4-input look-up table (LUT) based logic element with a dedicated carry chain, distributed M4K memory blocks, and embedded multiplier blocks. This heterogeneous fabric allows efficient implementation of arithmetic DSP pipelines, FIFO buffers, and state-machine control logic without external components. The PLLs provide clock multiplication, division, phase shifting, and duty-cycle correction for interfacing with external memory and high-speed peripherals. Typical applications for the EP2C35F484I6N include industrial motor control, video processing and image filtering, telecommunications line cards, software-defined radio DSP front-ends, and automotive driver-assistance prototypes. Designers choose the EP2C35 when they need a balance of logic density, DSP performance, and BGA packaging for high-pin-count systems. The 484-ball FBGA package supports the maximum user I/O count of the device, enabling wide parallel buses and multiple high-speed serial interfaces simultaneously. When designing with this device, engineers should follow Intel/Altera board layout guidelines for BGA fanout, power-plane decoupling, and PLL analog supply isolation. The Quartus II design suite (now Intel Quartus Prime) provides synthesis, place-and-route, and timing analysis for the Cyclone II family. Because the EP2C35F484I6N is a mature part originally launched circa 2005, engineers should verify current lifecycle status before new design starts. This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the Cyclone II family, and practical board-level design notes not found in the manufacturer datasheet alone. It is intended for engineers evaluating mid-density FPGAs for cost-sensitive parallel-processing designs.
EP2C35F484I7N - Cyclone II FPGA 33K Logic Elements FBGA-484 | Intel / Altera
The Intel / Altera EP2C35F484I7N is a Cyclone II family Field Programmable Gate Array (FPGA) delivering 33,216 logic elements, 484 maximum user I/O pins, and 483,840 total RAM bits in a 484-ball FineLine BGA (FBGA-484) package. It is fabricated on a low-power 90 nm CMOS process and operates across an industrial temperature range of -40C to +85C (the I7 speed/temperature grade). The device integrates up to 150 embedded 18 x 18 multipliers, supporting high-performance yet low-cost DSP implementations. A Field Programmable Gate Array (FPGA) is a semiconductor device built around a matrix of configurable logic blocks (CLBs) connected via programmable interconnect. Within the broader hierarchy, FPGAs sit under programmable logic devices (PLDs) and digital ICs, complementing ASICs by offering hardware re-programmability, fast time-to-market, and parallel DSP capability for signal-processing and control-plane workloads. Key features of the EP2C35F484I7N include 33,216 logic elements organized into 2,100 logic array blocks, 35 embedded M9K memory blocks (483,840 RAM bits total), up to 150 18 x 18 hardware multipliers for DSP, and 4 phase-locked loops for clock management. The device supports high-speed external memory interfaces including DDR, DDR2, and QDRII SRAM. Configuration is handled through passive serial, active serial, or JTAG modes. Typical applications include digital signal processing, video processing pipelines, industrial motor control, software-defined radio, communications infrastructure, and prototyping of custom ASIC designs. The wide logic capacity makes it suitable for high-throughput parallel processing tasks. When designing with this device, ensure proper power-supply decoupling across VCCINT, VCCA, and VCCIO rails, and provide adequate thermal relief on the PCB. Signal-integrity planning is critical for DDR2/QDRII interfaces at full speed.
EP2C35F484I8 - 33,216-Cell, 1.2V Cyclone II FPGA | Intel
Intel EP2C35F484I8 is a Cyclone II field-programmable gate array with 33,216 logic cells, 483,840 bits of embedded memory, 322 user I/Os, and a 1.2 V supply in a 484-ball FBGA package. Verified distributor data identifies the device as a 484-BGA FPGA, while Arrow additionally specifies a 402.58 MHz frequency and tray packaging. The I8 ordering-code data indicates an industrial operating-temperature grade, and DigChip gives an operating range of 0 °C to 85 °C. Exact package dimensions, configuration-memory size, embedded multiplier count, PLL count, speed grade, I/O-bank count, and supported I/O standards are not present in the supplied excerpts and therefore require datasheet verification. A field-programmable gate array is a programmable semiconductor containing configurable logic blocks, routing resources, and specialized functional blocks. Unlike a fixed application-specific integrated circuit, an FPGA can implement changing digital logic, interface protocols, control functions, and signal-processing datapaths through a user-generated configuration. Within programmable logic, the hierarchy is FPGA, programmable logic IC, configurable logic device, and integrated circuit. The Cyclone II family combines high logic capacity with embedded memory resources for cost-sensitive digital systems. The headline capacity of 33,216 logic cells supports substantially larger state machines, parallel datapaths, and multi-interface bridges than smaller programmable devices. Its 483,840 memory bits provide on-chip storage for FIFOs, lookup tables, buffers, and control records. A 322-I/O budget permits connection to numerous external memories, data converters, communications peripherals, and control signals. The 1.2 V core supply and 484-FBGA package are central to power-distribution, signal-integrity, and board-layout decisions. The EP2C35 device architecture is configured after board assembly through an external configuration process; exact supported configuration modes and pins must be obtained from the complete manufacturer datasheet before schematic release. The supplied datasheet excerpt states that the EP2C35 I/O count includes 16 dedicated clock pins that can also be used as data inputs. Clock planning therefore should distinguish package I/O capacity from general-purpose user-I/O requirements rather than treating all 322 pins as identical. Typical applications include industrial automation controllers, communications-interface equipment, test and measurement systems, and digital-video or display controllers. These systems benefit from parallel processing, reconfigurable interfaces, and the device's 33,216-cell capacity, 483,840 embedded memory bits, and 322 I/Os. Designers must still validate timing closure, configuration circuitry, termination, decoupling, and signal integrity against the target speed grade and complete Cyclone II datasheet. The most important procurement concern is that the supplied search identifies this mature Cyclone II device but provides no explicit lifecycle statement. Treat lifecycle status as unknown until confirmed from an official Intel product record. No verified cross-reference result establishes a pin-compatible drop-in replacement, so alternatives are limited rather than padded with functional or cross-package devices. This data synthesis adds verified purchasing links, package-aware replacement analysis, application guidance, and clearly marked datasheet gaps beyond a typical distributor listing. Prices are quoted as of 2026-09-08 from the only supplied unit-price snippet, while stock and lead time remain source-specific.
EP2C35F484I8N - Cyclone II FPGA, 33K LEs, 484-BGA | Intel
The Intel (formerly Altera) EP2C35F484I8N is a Cyclone II family Field-Programmable Gate Array (FPGA) housed in a 484-ball FineLine BGA package with 33,216 logic elements, 483,840 bits of embedded RAM (M4K blocks), 33216 logic cells, and 322 total pins of which up to 322 are user I/O. According to the manufacturer datasheet family overview, the Cyclone II family extends the low-cost FPGA density range up to 68,416 logic elements with up to 622 usable I/O pins and up to 1.1 Mbits of embedded memory, fabricated on a 90 nm process and operating from a 1.2 V core supply. The I8N suffix indicates the industrial temperature grade (-40C to +100C junction) and a lead-free, RoHS-compliant package. An FPGA (Field-Programmable Gate Array) is a type of programmable logic device (PLD) that belongs to the broader hierarchy: programmable logic device -> logic IC -> integrated circuit. Unlike an ASIC, an FPGA's logic fabric, routing, and I/O can be reconfigured by the designer after manufacture, making FPGAs ideal for prototyping, low-volume production, and designs requiring parallel processing, custom I/O timing, or in-field firmware updates. Cyclone II is positioned as a low-cost, high-volume FPGA for cost-sensitive applications such as digital signal processing, communications, industrial control, and embedded processing. Key features of the EP2C35F484I8N include 33,216 logic elements and 483,840 embedded RAM bits arranged in M4K blocks, four general-purpose PLLs for clock synthesis and management, and 322 user I/O pins supporting LVDS, LVTTL, LVCMOS, SSTL, and HSTL I/O standards. The device is supported by the Altera/Intel Quartus II design suite, which provides synthesis, place-and-route, timing analysis, and IP core integration. Configuration is supported via active serial (AS), passive serial (PS), JTAG, and Fast Passive Parallel (FPP) modes with the EPCS serial configuration device family. The Cyclone II architecture combines a logic array based on 4-input look-up tables (4-LUTs) with embedded multiplier blocks and M4K memory blocks for efficient DSP and buffering. The 90 nm CMOS process provides a balanced trade-off between density, performance, and static power consumption. Internal signal integrity is preserved through dedicated routing channels and predictable timing closure, while the Quartus II toolchain enables iterative design refinement against timing constraints up to several hundred MHz depending on logic utilization. Typical applications include industrial control and motor drive systems, video processing and image acquisition pipelines, communications protocol bridging (UART, SPI, I2C, PCIe, Ethernet MAC), consumer electronics with custom video or display interfaces, and educational or prototype development boards. The 322 available I/O pins in the F484 package make the device well suited to designs requiring parallel data buses, multiple ADC/DAC interfaces, or wide memory buses to external SRAM/SDRAM. When designing with the EP2C35F484I8N, ensure that the 1.2 V core and 3.3 V/2.5 V/1.8 V I/O supplies are properly decoupled with 100 nF and 10 uF capacitors placed close to the power balls, and follow Intel/Altera's PCB layout guidelines for BGA fanout to maintain signal integrity on high-speed LVDS pairs. This page synthesizes distributor pricing, drop-in Cyclone II and Cyclone IV/FPGA alternatives, PCB layout notes, and design considerations not found in the manufacturer datasheet alone.
EP2C35F672C6 - Cyclone II FPGA 33K LE 672-FBGA | Intel
The Intel (formerly Altera) EP2C35F672C6 is a Cyclone II family Field-Programmable Gate Array (FPGA) delivering 33,216 logic elements, 483,840 bits of embedded RAM, and 475 user I/O pins, housed in a 672-ball FineLine BGA package. Built on a 90 nm low-k dielectric CMOS process, it features four phase-locked loops (PLLs) and supports up to 260 MHz internal operation, making it a high-density, low-cost programmable logic solution for cost-sensitive applications. A Cyclone II FPGA is a SRAM-based programmable logic device that allows designers to implement custom digital logic, signal processing, and embedded processor subsystems after PCB fabrication. It belongs to the broader category of programmable logic devices (PLDs), sitting alongside CPLDs, FPGAs, and structured ASICs. Compared with its predecessor Cyclone I, the Cyclone II family roughly doubled logic density while targeting the same low-power, high-volume end of the market. Key features include 33,216 LEs, 483,840 total RAM bits distributed across M4K memory blocks, 70 embedded 18x18 multipliers for DSP operations, four PLLs with multiple output taps, and 475 user I/O pins. The device supports common I/O standards including LVTTL, LVCMOS, PCI, SSTL, and LVDS, with per-pin programmable drive strength and slew-rate control. Cyclone II uses a 90 nm process node with a 1.2 V core supply and offers dedicated hardware multipliers and M4K block RAM that allow efficient implementation of FIR filters, FFTs, video pipelines, and embedded Nios II soft processors. The part number suffix indicates the C6 speed grade (commercial temperature range, approximately -40C to +85C ambient). Typical applications include industrial motor control, video processing and surveillance, telecommunications line cards, embedded industrial controllers, and educational/development platforms. The high I/O count (475) and large memory (483 Kbits) make it well suited for parallel bus interfacing and data-pipeline processing. When designing with the EP2C35F672C6, engineers should plan the power distribution network carefully: Cyclone II requires multiple supply rails (VCCINT, VCCA, VCCIO per bank) and the 672-ball FBGA demands a multilayer PCB with microvia technology. Use the Quartus II design software for synthesis, place-and-route, and timing closure. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers an actionable reference beyond what Altera/Intel provides in their legacy Cyclone II handbook.
EP2C35F672C6N - 33K LE Cyclone II FPGA, 672-FBGA | Intel / Altera
The Intel / Altera EP2C35F672C6N is a 33,216-logic-element member of the Cyclone® II FPGA family, housed in a 672-ball FineLine BGA package and built on a 90-nm low-k dielectric CMOS process. The device integrates 33,216 logic elements, 483,840 bits of embedded RAM, 33216 logic cells, and 475 user I/O pins, and operates from a 1.2 V core supply with a commercial 0°C to 85°C junction temperature range. What is an FPGA? A Field Programmable Gate Array (FPGA) is a programmable logic device whose architecture is built from an array of configurable logic blocks (CLBs), embedded memory blocks, multiplier/DSP blocks, and a programmable interconnect fabric. In the electronic component hierarchy, an FPGA sits between a microcontroller and a custom ASIC: like a microcontroller it is software-configurable and low-NRE, but like an ASIC it can run truly parallel logic at multi-hundred-MHz clock rates. The Cyclone II family targets cost-sensitive high-volume applications such as digital signal processing, video bridging, and custom peripheral interfaces. Key features include 4 embedded PLL blocks for clock synthesis and skew management, 35 embedded 18×18 multipliers for DSP workloads, a 4-Mbit on-chip RAM subsystem, and support for external memory interfaces including DDR/DDR2 SDRAM and QDRII SRAM. The LVDS / LVTTL / SSTL / HSTL I/O bank architecture supports single-ended and differential signalling up to 475 I/O, with per-bank reference voltage support. Architecturally, the Cyclone II device family uses a 4-input look-up-table (4-LUT) logic element, dedicated carry chains for fast arithmetic, and Altera's Logic Array Block (LAB) grouping of 16 LEs. Configuration is via the Altera Passive Parallel (PP), Passive Serial (PS), Active Serial (AS), or JTAG modes, with configuration bitstream loaded from EPCS serial configuration devices or a microcontroller. Typical applications include industrial motor control, video format conversion, protocol bridging (PCI to local bus, UART to I2S), soft-core processor platforms (Nios II), and high-volume consumer electronics. The 475 I/O count and 33K LE capacity make the EP2C35F672C6N a mid-range workhorse for designs that need more logic than a CPLD but less than a high-end Cyclone IV or V device. When designing with this part, ensure the PCB has a minimum of six PCB layers with dedicated ground and 1.2 V / 2.5 V / 3.3 V power planes to meet signal-integrity and decoupling guidelines in the Cyclone II device family handbook. The 672-FBGA requires a 1.0 mm ball pitch and reflow profile compatible with lead-free SAC alloy. This page synthesises distributor pricing, drop-in compatible Cyclone II family members, and practical design notes not consolidated in the manufacturer datasheet.
EP2C35F672C7 - Cyclone II FPGA 33K LE 672-BGA | Intel
The Intel (Altera) EP2C35F672C7 is a member of the Cyclone II family of low-cost FPGAs, delivering 33,216 logic elements, 483,840 bits of embedded RAM, and 475 user I/O pins in a 672-ball FineLine BGA package at the commercial speed grade 7. Built on a 90 nm low-k dielectric CMOS process, the Cyclone II family targets high-volume, cost-sensitive applications where ASIC-class integration is uneconomical, and the EP2C35 sits at the upper end of the density range for the series. An FPGA (Field-Programmable Gate Array) is a reconfigurable digital integrated circuit containing an array of programmable logic blocks, embedded memory blocks, phase-locked loops, and a programmable interconnect fabric. The Cyclone II family is positioned within Intel's broader programmable logic hierarchy as the entry-to-mid-range tier, sitting above the original Cyclone and below the Stratix/Arria/Cyclone IV families. FPGAs enable parallel hardware implementation of DSP, glue logic, bus bridging, and custom peripherals that would otherwise require discrete logic or an ASIC. Key features of the EP2C35F672C7 include four phase-locked loops (PLLs) for clock synthesis and de-skew, 35 embedded 18×18 multipliers enabling up to 250 MHz DSP performance, support for external memory interfaces including DDR, DDR2, and QDRII SRAM, and Nios II embedded processor soft-core compatibility. The device is supported by the Quartus II design software and offers in-system programmability via serial or parallel configuration interfaces. The 672-BGA package exposes the device's full I/O count, enabling parallel data buses and high-speed external memory connections. The Cyclone II architecture combines look-up-table (LUT)-based logic elements with M4K embedded memory blocks (4 Kbit each, configurable as RAM, ROM, or FIFO). The embedded multipliers are true 18×18 hardware multipliers that accelerate DSP operations such as FIR filters and FFT butterflies without consuming general logic. The PLLs support clock multiplication, division, phase shifting, and external clock feedback, which is essential for source-synchronous memory interfaces and multi-clock-domain designs. Typical applications include industrial motor control, video surveillance and image processing, automotive infotainment pre-production, telecom line cards, low-cost software-defined radio front-end preprocessing, and education/development platforms. The combination of moderate logic density, embedded multipliers, and high I/O count makes the EP2C35 particularly attractive for designs transitioning from discrete DSP+microcontroller solutions to a single programmable device. When designing with this device, allocate pin assignments early to match the BGA escape routing on the PCB, and use the Quartus II Pin Planner to verify I/O standards (LVTTL, LVCMOS, SSTL, LVDS) are supported on the chosen banks. The 672-BGA package requires via-in-pad or dog-bone fanout and controlled-impedance traces for high-speed signals. For new designs, evaluate the Cyclone IV E or Cyclone V families for active roadmap continuity, as Cyclone II is a legacy product family. This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design considerations for the EP2C35F672C7 in a single reference, complementing the official Intel Cyclone II datasheet with cross-vendor substitution data, application context, and PCB layout guidance that engineer-focused product pages typically omit.
EP2C35F672C7N - 33K Logic Elements Cyclone II FPGA, 672-BGA | Altera / Intel
The Altera (now Intel) EP2C35F672C7N is a Cyclone II family Field-Programmable Gate Array (FPGA) delivering 33,216 logic elements, 483,840 total memory bits, and 475 user I/O pins in a 672-ball FineLine BGA package. Manufactured on a 1.2 V core, 90 nm CMOS process with a speed grade of -7 (commercial temperature range 0 °C to +85 °C), it targets cost-sensitive high-volume designs that previously required ASICs. An FPGA (Field-Programmable Gate Array) is a semiconductor device built around an array of configurable logic blocks (CLBs), embedded memory blocks, and programmable interconnect, all of which can be reconfigured by the designer after manufacture. FPGAs occupy the top of the programmable logic hierarchy: programmable logic device (PLD) -> CPLD -> FPGA -> SoC FPGA. Compared with CPLDs, FPGAs offer far higher logic capacity, embedded Block RAM, DSP blocks, and high-speed transceiver capability, but require external configuration memory and a more complex power-up sequence. Key features include 33,216 logic elements (LEs) arranged in 2,100 logic array blocks (LABs), 105 M9K embedded memory blocks delivering 483,840 bits total RAM, 35 embedded 18 x 18 multipliers for DSP operations, and four phase-locked loops (PLLs) for clock management. The device supports DDR/DDR2/QDRII SDRAM interfaces through dedicated external memory interfaces and offers 475 user I/O pins arranged in 8 I/O banks supporting LVDS, LVTTL, LVCMOS, SSTL, and HSTL I/O standards. Cyclone II devices are SRAM-based, so the configuration bitstream must be loaded from an external flash or a configuration controller on every power-up. The EP2C35F672C7N supports Active Serial (AS), Passive Serial (PS), Fast Passive Parallel (FPP), and JTAG configuration modes. Quartus II design software (legacy; current support is via Intel Quartus Prime with Cyclone II device support) is used for synthesis, place-and-route, and timing closure. Typical applications include industrial motor control, video surveillance and image processing, low-cost protocol bridging (PCI to local bus, Ethernet MAC), consumer audio/video processing, and telecom line-card glue logic. The 672-BGA FineLine package provides a 27 x 27 mm footprint with 1.0 mm ball pitch, suitable for multi-layer PCBs using standard BGA assembly processes. When designing with this part, plan a multi-rail power tree (1.2 V core, 2.5 V/3.3 V analog PLLs, I/O bank voltages), respect simultaneous switching output (SSO) limits per bank, and provide decoupling per Cyclone II handbook guidelines. The Cyclone II family is in mature production but has been surpassed by Cyclone IV/V/10 LP for new designs; sourcing risk should be evaluated for long-life programs. This page synthesizes distributor pricing, drop-in pin-compatible Cyclone II alternatives, and practical design notes not found in the manufacturer datasheet.
EP2C35F672C8 - Cyclone II FPGA, 33K LEs, 672-BGA | Altera
The Altera EP2C35F672C8 is a member of the Cyclone II family of low-cost, low-power Field-Programmable Gate Arrays (FPGAs), fabricated on a 90 nm process and offered in a 672-pin FineLine BGA package. The device integrates 33,216 logic elements, 483,840 bits of embedded RAM organized as M4K blocks, and 35 embedded 18x18 multipliers, making it well-suited for high-volume digital logic, DSP, and embedded control applications. The 'F' in the part number denotes the 672-ball FineLine BGA, while the 'C8' speed grade indicates a commercial 8 ns pin-to-pin logic delay tier. An FPGA (Field-Programmable Gate Array) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that can be rewired by the end user after manufacture. FPGAs sit in the broader category of programmable logic devices (PLDs) and bridge the gap between fixed-function ASICs and software-driven microcontrollers, offering hardware-level parallelism for DSP, protocol bridging, and custom interface designs. Within Altera's (now Intel) portfolio, Cyclone II occupies the low-cost, low-power tier beneath Cyclone III/IV/V and the high-performance Stratix families. Key features of the EP2C35F672C8 include support for up to 475 user I/O pins, four phase-locked loops (PLLs) for clock management, dedicated DDR/DDR2 memory interfaces with integrated data strobe (DQS) pins, and support for multiple I/O standards including LVDS, SSTL, and LVTTL. The 90 nm process delivers a favorable core dynamic-power profile compared with older Cyclone generations, and the 672-BGA package exposes the maximum I/O count for the EP2C35 die. Architecturally, the device is built around LABs (Logic Array Blocks) of 16 LEs each, columns of M4K memory blocks, and DSP blocks for multiply-accumulate operations. Configuration is loaded through the active serial (AS), passive serial (PS), or JTAG interface, and the bitstream is stored in industry-standard EPCS configuration devices. The four PLLs provide frequency synthesis, phase shifting, and clock de-skew for system-level timing closure. Typical applications include industrial motor control, video processing, software-defined radio (SDR) baseband, embedded vision, and low-cost ASIC prototyping. Designers frequently target the EP2C35F672C8 when they need 30K+ LEs with a rich DSP and memory mix at the lowest unit price in the Cyclone II lineup, and where the 672-BGA's high I/O count supports wide external memory buses and multi-standard I/O. When designing with this device, attention must be paid to power distribution across the multiple VCCINT, VCCIO, and PLL supply rails, and to the 672-BGA PCB escape routing - the 1.0 mm pitch demands either microvia or laser-drilled via technology. Designers upgrading to Cyclone III/IV should expect pinout and supply-rail changes, so the EP2C35F672C8 is rarely a drop-in swap for newer families. This page synthesizes distributor pricing, the device's position within the Cyclone II family, drop-in package- and speed-grade alternatives, and practical design notes not found in the standalone datasheet.
EP2C35F672C8ES - Cyclone II FPGA 33K LE, 672-FBGA | Intel/Altera
The Intel (formerly Altera) EP2C35F672C8ES is a member of the Cyclone® II family of low-cost FPGAs fabricated on a 90nm CMOS process, housed in a 672-ball FineLine BGA (FBGA) package. It delivers 33,216 logic elements, 483,840 bits of embedded RAM, and 35 embedded 18x18 multipliers, with up to 475 user I/O pins. The device is pin-compatible with the broader EP2C family, enabling designers to migrate up or down the logic-density range without PCB rework. A Field Programmable Gate Array (FPGA) is a programmable logic device that contains an array of configurable logic blocks (CLBs), interconnect, memory, and hard IP blocks such as PLLs, multipliers, and transceivers. FPGAs sit between general-purpose microcontrollers and ASICs in the system hierarchy: microcontrollers execute software sequentially, ASICs implement fixed logic, while FPGAs offer parallel, hardware-defined functionality that can be reconfigured at any point. Cyclone II specifically targets cost-sensitive, high-volume applications in the FPGA & CPLD product category within the broader Programmable Logic IC family. This part carries the commercial 0°C to 85°C operating range and supports core supply voltages around 1.2V, with PLL and I/O banks powered independently. Key features of the EP2C35F672C8ES include support for LVDS, LVTTL, LVCMOS, SSTL, and HSTL I/O standards across 4 I/O banks, four general-purpose PLLs, and configuration via JTAG, serial passive, or Altera enhanced configuration devices. The Cyclone II architecture embeds Multiplier blocks that deliver up to 250 MHz DSP performance, along with M4K RAM blocks each supporting dual-port operation and FIFO mode. Dedicated per-pin signal integrity features such as on-chip termination (OCT) simplify board layout. From a design perspective, the EP2C35F672C8ES is commonly used in industrial control, automotive infotainment, video processing, and communications infrastructure. Its 35 embedded 18x18 multipliers make it suitable for moderate-throughput DSP such as FIR filters or video scaling. Designers should note that the 'ES' suffix on the original MPN denotes an engineering sample - production builds typically use the EP2C35F672C8 (without ES). For new designs, confirm commercial-grade availability and lifecycle status. When designing with this FPGA, ensure all four PLL supply pins (VCCA, VCCD_PLL) are properly decoupled with ferrite beads and bulk capacitance. The 672-ball FBGA requires 26mm x 26mm PCB area and microvia stack-up for reliable assembly. Use the Quartus II design software (latest service pack for legacy device support) for synthesis and place-and-route, and verify timing with the TimeQuest timing analyzer. This page synthesizes current distributor stock levels, exact-spec drop-in alternatives from the Cyclone II family, and practical design notes not found in the bare manufacturer datasheet - intended for engineers evaluating legacy FPGA stock for production or redesign.
EP2C35F672C8N - Cyclone II FPGA, 33K LEs, 672-BGA | Altera
The Altera (now Intel) EP2C35F672C8N is a Cyclone II family Field Programmable Gate Array (FPGA) fabricated on a 90 nm low-k process, delivering 33,216 logic elements (LEs), 483,840 total RAM bits, and 475 user I/O pins in a 672-ball FineLine BGA package. It targets cost-sensitive high-volume designs that need substantially more logic capacity than what first-generation Cyclone devices offered, while keeping the silicon cost low through 90 nm process scaling and an optimized LUT-based architecture. A Field Programmable Gate Array (FPGA) is a programmable logic device built from an array of configurable logic blocks (LUTs), programmable routing, and dedicated hard-IP blocks such as block RAM, multipliers, and I/O serializers. FPGAs sit in the broader hierarchy of programmable logic -> programmable logic devices -> digital semiconductor ICs, and are typically used when design flexibility, parallelism, and time-to-market outweigh the unit cost of an ASIC. The Cyclone II family specifically targets the low-cost FPGA segment and is the successor to the original Cyclone series, extending density up to 68,416 LEs and offering up to 1.1 Mbits of embedded memory across the family. The EP2C35F672C8N features 35 embedded 18x18 multipliers for DSP-style operations, four phase-locked loops (PLLs) for clock generation and conditioning, and 33216 logic elements backed by approximately 0.5 Mbit of on-chip RAM. It supports multiple I/O standards including LVTTL, LVCMOS, PCI, SSTL, and LVDS, making it broadly compatible with both legacy parallel buses and high-speed differential interfaces common in industrial and consumer designs. The device operates at a core voltage of 1.2 V with I/O supply rails configurable from 1.5 V to 3.3 V depending on the standard. Architecturally, the EP2C35F672C8N combines a four-input look-up table (LUT) logic fabric with dedicated M4K memory blocks, multiplier blocks, and a row/column interconnect optimized for the 90 nm node. The 672-ball FineLine BGA package exposes 475 usable I/O pins while leaving the remaining balls for power, ground, and configuration. The die is the same silicon used across speed grades, with the speed/grade suffix (C8N) defining timing closure limits rather than functional capability. This means the C7, C8, and C6 variants are typically drop-in alternatives differing only in maximum operating frequency. Typical applications include industrial motor and motion control, video processing pipelines, software-defined radio (SDR) baseband, low-cost ASIC prototyping, and embedded vision front-ends. The large user-I/O count (475) and generous memory bandwidth make it a popular choice for bridging parallel image sensors to processors, glue logic replacement, and education platforms that need to expose many pins for student projects. The wide distribution of the device across octopart-listed suppliers also makes it a familiar reference design for FPGA training boards. When designing with this device, observe the I/O bank grouping rules - each bank shares VCCIO and reference voltage constraints, so split-bus interfaces (e.g., 3.3 V and 1.8 V on the same bus) require careful bank planning. For high-toggle-rate outputs, derate the simultaneous-switching output (SSO) budget per the datasheet I/O chapter to keep ground bounce within spec, and use the Quartus II PowerPlay analyzer to estimate dynamic current before committing to a particular decoupling network. This page synthesizes distributor pricing (as of 2026-09-08), pin-compatible Cyclone II speed-grade and package alternatives, and practical design notes not found in the manufacturer datasheet alone.
EP2C35F672I6N - 33,216 Logic Cells Cyclone II FPGA | Intel
The Intel (formerly Altera) EP2C35F672I6N is a Cyclone II Field Programmable Gate Array (FPGA) housed in a 672-ball FineLine BGA (FBGA-672) package. It delivers 33,216 total logic elements organized into 2,100 logic array blocks (LABs) and provides up to 483,840 bits of on-chip embedded memory, with support for up to 150 dedicated 18x18 hardware multipliers for cost-sensitive DSP. A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit built around a matrix of configurable logic blocks (CLBs) connected via programmable interconnect. FPGAs occupy a unique position between general-purpose processors (CPUs/MCUs) and application-specific integrated circuits (ASICs): they offer hardware-level parallelism and deterministic timing like ASICs but remain re-programmable, making them ideal for prototyping, low-volume production, and designs requiring late-stage hardware changes. Within the broader taxonomy, the EP2C35 sits in the low-cost, high-volume Cyclone II family, which itself belongs to the programmable logic device (PLD) category of digital ICs. Key differentiating specifications include 4 embedded PLL blocks for clock management, support for multiple I/O standards (LVDS, LVTTL, LVCMOS, SSTL, HSTL, PCI), and a 1.2V core supply (1.15V to 1.25V) with a separate 3.3V I/O supply. The device operates across the industrial temperature range of -40C to +100C (the 'I' suffix) and the speed grade 6 designation places it in the mid-tier performance bucket. The 672-ball BGA package supports up to 322 user I/O pins, making the EP2C35 one of the densest members of the Cyclone II family. The Cyclone II architecture combines a low-k dielectric 90nm process with a logic structure optimized for DSP and consumer applications. Its 18x18 multiplier blocks enable single-cycle multiply-accumulate operations, while the M4K memory blocks can be configured as RAM, ROM, or FIFO with byte enables. This combination makes the EP2C35F672I6N particularly well-suited for parallel DSP pipelines where multiple MAC operations must complete in a single clock cycle. Typical applications include digital video processing, software-defined radio baseband, industrial motor control, low-cost ASIC prototyping, and embedded vision systems. The wide I/O count supports parallel data buses for SDRAM, SRAM, and video ADCs/DACs without external bus multiplexing. When designing with this part, pay close attention to the four PLL configuration constraints and bank-based I/O voltage grouping. The 672-ball BGA requires a 4-layer or better PCB stack-up with controlled-impedance routing and a solid ground pour beneath the device to meet signal-integrity requirements for LVDS interfaces. This page synthesizes distributor pricing, pin-compatible Cyclone II drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
EP2C35F672I8 - Cyclone II FPGA 33K LE 672-FBGA | Intel
The Intel (formerly Altera) EP2C35F672I8 is a Cyclone II family Field-Programmable Gate Array (FPGA) containing 33,216 logic elements, 483,840 bits of embedded RAM, and 475 user I/O pins, housed in a 672-ball FineLine BGA package. Built on a low-power 90-nm SRAM process, it delivers up to 1.1 Gbps LVDS performance with embedded multipliers and a flexible PLL architecture for high-volume, cost-sensitive designs. The 'I8' suffix indicates an industrial temperature grade (-40C to +100C junction), while the 'C8' speed grade targets 8 ns core timing. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit composed of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that the designer can reconfigure after manufacturing. FPGAs sit above Application-Specific Integrated Circuits (ASICs) and microcontrollers in the programmable logic taxonomy (FPGA -> programmable logic -> digital IC -> semiconductor), offering parallel hardware execution, nanosecond-level latency, and hardware-level deterministic timing that CPUs cannot match. Modern low-cost FPGAs like Cyclone II target glue-logic, protocol bridging, and DSP pre-processing where ASIC NRE is unjustified. Key features include 35 embedded 18x18 multipliers (up to 250 MHz), four general-purpose PLLs with up to 16 output taps each, 250 MHz maximum internal clock frequency, and support for external memory interfaces including DDR, DDR2, SDR, QDRII, and SRAM. The 672-FBGA package uses 1.0 mm ball pitch with a 27x27 mm body, providing ample routing escape for high-density designs. The Cyclone II architecture uses 4-input look-up tables (LUT4) with embedded memory bits distributed throughout the logic array. Logic elements combine LUTs, registers, carry chains, and multiplier blocks to efficiently implement arithmetic, state machines, and DSP pipelines. The fabric supports hot-socketing and PCI Express PIPE compatibility for interface bridging. Typical applications include industrial motor control, video surveillance and image processing, automotive infotainment pre-production, telecom protocol bridging, and low-volume ASIC prototyping. The 475 user I/O accommodate parallel sensor buses and multiple high-speed serial interfaces concurrently. When designing with this FPGA, ensure proper decoupling per Cyclone II handbook guidelines: 100 nF and 10 uF capacitors near each VCC/VCORE/GND pair, and a dedicated VCCAUX filter for PLL noise immunity. Configuration via JTAG or active serial requires correct MSEL pin strapping. This page synthesizes distributor pricing, drop-in alternative MPNs from the same Cyclone II family, and practical design notes not collected in a single manufacturer document.
EP2C35F672I8N - 33K LE Cyclone II FPGA, 672-BGA | Intel
The Intel (formerly Altera) EP2C35F672I8N is a low-cost Cyclone II Field-Programmable Gate Array (FPGA) fabricated on a 90 nm CMOS process, delivering 33,216 logic elements, 483,840 total memory bits, and 475 user I/O pins in a 672-ball FineLine BGA package. It is rated industrial temperature grade (-40C to +100C ambient) with the speed grade 8 designation, and ships as a lead-free surface-mount component. The 'N' suffix denotes a Pb-free / RoHS-compliant terminal finish. A Field-Programmable Gate Array is a reconfigurable digital integrated circuit whose logic fabric, interconnect, and I/O can be electrically programmed after PCB assembly. Within the broader silicon taxonomy, FPGAs sit alongside ASICs, microcontrollers, and DSPs as programmable logic devices, but uniquely offer hardware-level parallelism, sub-cycle latency, and on-the-fly reconfiguration. Cyclone II represents Altera's second-generation low-cost FPGA family, optimized for high-volume cost-sensitive designs where ASIC NRE is unjustified. Key features of the EP2C35F672I8N include 33,216 logic elements, 35 embedded 18x18 multipliers (132 9x9 multipliers) for DSP-style arithmetic, 483,840 bits of embedded RAM arranged across M4K blocks, 475 user I/O pins, and four phase-locked loops for clock synthesis and management. The 672-BGA package provides 35x35 ball array with 1.0 mm pitch, enabling dense PCB escape routing while still allowing conventional reflow assembly. Architecturally, the Cyclone II device uses a four-input look-up table (LUT4) logic element, true dual-port M4K memory blocks, and dedicated multiplier blocks adjacent to the logic array. The 672-BGA package supports up to 8 high-speed LVDS channels and 16 global clock networks. Configuration is loaded through passive serial (PS), fast passive parallel (FPP), or JTAG modes using the Altera Quartus design toolchain. Typical applications span industrial motor control, video processing pipelines, software-defined radio front-ends, automotive driver-assistance prototyping, communications protocol bridging, and cost-optimized ASIC prototyping where moderate logic density and abundant I/O are required. The 475 user I/O count and 35 hardware multipliers make it well suited to parallel data acquisition and image preprocessing. When designing with the EP2C35F672I8N, ensure the PCB layout honors the BGA escape pattern with microvia or via-in-pad technology to reach inner-layer routing. Confirm that JTAG, configuration, and decoupling pins are accessible to the programmer, and that the PLL power supply filtering follows the Cyclone II handbook reference schematic. This page synthesizes distributor pricing, package-equivalent drop-in alternatives from the same Cyclone II family, and practical design notes not found in the manufacturer datasheet, giving the engineer a single source for cross-brand replacement decisions and reference-design companion parts.
EP2C35U484C6 - 33,216 LE Cyclone II FPGA, 484-FBGA | Altera
The Altera (now Intel) EP2C35U484C6 is a Cyclone II family Field Programmable Gate Array (FPGA) that integrates 33,216 logic elements, 483,840 bits of embedded RAM, and 322 user I/O pins in a 484-ball FineLine BGA package. Built on a 90 nm low-k dielectric CMOS process, this device supports an internal operating voltage of 1.2 V and provides a fabric speed-grade 6 (C6) timing classification. The 484-FBGA package designation uses Altera's U484 pin-grid, a 1.0 mm pitch ball array optimized for high-density logic designs. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that allows engineers to implement arbitrary digital logic through a configuration bitstream loaded into on-chip SRAM. FPGAs sit in the broader taxonomy of programmable logic -> logic ICs -> digital semiconductors -> integrated circuits. Cyclone II specifically targets low-cost, high-volume applications by balancing logic density, embedded memory, and DSP blocks against aggressive per-unit cost, displacing ASICs and ASSPs in designs where flexibility, fast time-to-market, or low NRE is critical. Key features of the EP2C35U484C6 include 33,216 logic elements organized in 2,076 logic array blocks (LABs), 483,840 total RAM bits distributed across M4K memory blocks, and embedded 18x18 multipliers supporting DSP operations up to approximately 250 MHz. The device also provides 4 PLLs for clock management, JTAG (IEEE 1149.1) boundary-scan support, and Altera's passive serial or active serial configuration interface. From an architecture standpoint, the Cyclone II fabric is built around a four-input look-up table (LUT) per logic element with adjacent register and carry-chain resources. The 484-FBGA package measures 19 mm x 19 mm with 1.0 mm ball pitch, suitable for multi-layer PCB designs with microvia or via-in-pad stack-ups. Compared with the preceding Cyclone generation, Cyclone II doubles logic density and adds dedicated multiplier blocks, improving DSP throughput for fixed-point filter and FFT workloads. Typical applications include video processing and image filtering, industrial control and motor drive logic, low-cost software-defined radio front-end controllers, embedded PCI/PCI-X bridges, and prototyping platforms that later migrate to a Cyclone IV or Cyclone V device. The combination of 322 user I/Os and 4 PLLs makes it well-suited for memory-rich interface bridging such as DDR/DDR2 SDRAM controllers. When designing with the EP2C35U484C6, plan power-decoupling around the 484-ball BGA with at least one 100 uF bulk capacitor per voltage rail and 0.1 uF/0.01 uF ceramic pairs adjacent to each power pin. Use Altera's Quartus II design software (version 13.0 sp1 or earlier supports Cyclone II natively) for synthesis, place-and-route, and timing closure. The FBGA substrate requires X-ray or optical inspection for solder-joint verification during assembly. This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design notes compiled from the manufacturer datasheet and current distributor listings - information not aggregated by a single manufacturer page or distributor catalog.
EP2C35U484C6N - Cyclone II FPGA, 33K LE, 484-FBGA | Altera
The Altera (now Intel) EP2C35U484C6N is a low-cost Cyclone II Field-Programmable Gate Array built on a 90 nm CMOS process, integrating 33,216 logic elements, 483,840 total RAM bits, and 322 user I/O pins in a 484-ball FineLine BGA (UFBGA) package. Per the Cyclone II Device Handbook, the device operates from a 1.2 V core supply with separate VCCIO banks that support 1.5 V, 1.8 V, 2.5 V, and 3.3 V I/O standards, and offers embedded 18x18 multipliers and PLL clock management blocks for DSP and high-speed serial-deserializer bridging. What is an FPGA? An FPGA (Field-Programmable Gate Array) is a semiconductor device whose logic fabric, routing, and I/O can be configured by the customer after manufacture, enabling hardware-level parallelism for DSP, glue logic, prototyping, and ASIC-replacement designs. The Cyclone II family sits in the low-cost density tier between CPLDs and high-end FPGAs, targeting cost-sensitive applications such as industrial controllers, video processing, and protocol bridging. Within the taxonomy, Cyclone II belongs to Altera's low-power, low-cost FPGA family and is positioned beneath the Stratix performance tier. Key features of the EP2C35U484C6N include 33,216 logic elements arranged across 2,076 logic array blocks (LABs), 105 M9K embedded memory blocks totaling 483,840 RAM bits, 35 embedded 18x18 multipliers for DSP operations, four phase-locked loops (PLLs) for clock synthesis and skew management, and 322 maximum user I/Os supporting LVDS, LVTTL, LVCMOS, SSTL, and PCI I/O standards. The U484 package (484-ball FBGA, 1.0 mm pitch) supports commercial operating temperature (0 °C to +85 °C) and is RoHS-compliant (lead-free). Architecturally, the Cyclone II fabric uses a four-input lookup table (LUT) based logic element with dedicated carry chains for fast arithmetic, distributed M9K RAM blocks scattered throughout the LAB array, and multiplier blocks hardwired between LAB columns. Configuration is loaded via Altera's serial or parallel configuration schemes through dedicated JTAG or AS (active serial) configuration pins, supported by the Quartus II design toolchain. Typical applications include industrial motor control, video surveillance and image processing front-ends, telecommunications protocol bridging, PCI/PCI-X interface bridging at 33-66 MHz, software-defined radio (SDR) baseband processing, and FPGA-based prototyping of ASIC designs. The wide VCCIO bank flexibility also makes it suitable for mixed-voltage system design where older 5 V-tolerant or 3.3 V peripherals must coexist with 1.8 V processors. When designing with the EP2C35U484C6N, plan power sequencing carefully: the 1.2 V core VCCINT must ramp before or simultaneously with VCCIO to avoid I/O latch-up. Use Altera's PowerPlay Power Analyzer inside Quartus II for accurate thermal estimation, and provide at least 4-layer PCB routing with continuous ground and power planes for the 322 high-speed I/Os. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
EP2C35U484C7 - Cyclone II FPGA, 33K LE, 484-FBGA | Altera/Intel
The Altera (Intel) EP2C35U484C7 is a Cyclone II family Field-Programmable Gate Array (FPGA) fabricated on a 90 nm CMOS process, delivering 33,216 logic elements, 483,840 bits of embedded RAM, and 322 user I/O pins in a 484-ball FineLine BGA (UBGA-484) package. Per Altera's Cyclone II Device Handbook, the device operates from a 1.2 V core supply with separate VCCIO banks supporting multiple I/O standards, and supports internal frequencies up to 402.58 MHz. An FPGA (Field-Programmable Gate Array) is a programmable logic device consisting of an array of configurable logic blocks (CLBs), embedded memory, DSP blocks, and programmable I/O cells interconnected by a routing fabric. FPGAs sit in the hierarchy: programmable logic -> semiconductor -> integrated circuit. They are widely used for parallel digital signal processing, custom interfaces, prototyping ASICs, and glue logic where fixed-function ASSPs cannot meet timing, throughput, or interface requirements. The Cyclone II family targets cost-sensitive, high-volume applications with low-to-moderate logic density needs. Key features of the EP2C35U484C7 include 33,216 logic elements, 4 PLLs for clock synthesis and skew management, 35 embedded 18x18 multipliers for DSP workloads, 483,840 total RAM bits distributed across M4K memory blocks, and 322 general-purpose I/Os supporting LVDS, LVTTL, LVCMOS, SSTL, and PCI I/O standards. Per Altera documentation, the device also supports PCI 32/64-bit at 33/66 MHz and 133 MHz PCI-X operation through external PHYs and MegaCore IP, plus external PCI Express x1 with an Altera MegaCore function and TI PHY companion. Typical applications include industrial motor control and factory automation, video processing and image pipelines, communication infrastructure (bridges, routers), test and measurement instrumentation, and embedded control designs requiring custom high-speed parallel interfaces. The 322 user I/Os make it especially attractive for designs that need to aggregate many parallel sensors, displays, or legacy buses. When designing with this device, ensure robust decoupling on every VCC and VCCIO pin (per Cyclone II Handbook guidelines), respect the maximum I/O count when planning pin assignments, and use the Quartus II design suite (the original toolchain) for synthesis, place-and-route, and timing closure. The 484-FBGA package requires careful PCB layout with proper via-in-pad or dog-bone fanout, controlled-impedance traces for high-speed I/O, and adequate ground flooding for signal integrity.
EP2C35U484C7N - Cyclone II FPGA 33K LEs 484-FBGA | Intel / Altera
The Intel (formerly Altera) EP2C35U484C7N is a low-cost Cyclone II family Field-Programmable Gate Array (FPGA) fabricated on a 90 nm CMOS process, delivering 33,216 logic elements and 483,840 bits of embedded RAM in a 484-ball FineLine BGA package. It supports up to 322 general-purpose I/O pins with 1.2 V core operation and per-bank selectable I/O standards including LVDS, LVTTL, LVCMOS, SSTL and HSTL, making it a flexible glue-logic and signal-processing platform for cost-sensitive designs. A Field-Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnects, and dedicated hardware resources such as block RAM and multipliers that allow designers to implement custom digital logic after manufacture. Within the broader taxonomy, the EP2C35U484C7N sits at FPGA > programmable logic device (PLD) > logic IC > integrated circuit (IC) > semiconductor. Cyclone II is positioned as the low-power, low-cost tier of the Altera/Intel FPGA portfolio, optimized for ASIC-replacement, DSP co-processing and parallel I/O expansion rather than the highest performance. Key features of this part include 35 embedded 18x18 multipliers for DSP operations, four phase-locked loops (PLLs) for clock management, and support for external memory interfaces such as DDR/DDR2 SDRAM. The device is offered in the commercial 0C to 85C temperature grade and the U484 package variant (484-ball Ultra FineLine BGA, 19x19 mm) balances high I/O count with manageable PCB routing. The architecture combines embedded M4K RAM blocks (total 483,840 bits) with a rich interconnect fabric that supports variable-length routing paths to optimize both speed and density. The internal clock network, backed by four PLLs, can synthesize multiple output frequencies from a single reference, simplifying designs that must meet multiple timing domains. Typical applications include industrial control and motor drive, video surveillance and image processing pipelines, software-defined radio front-ends, communications infrastructure (bridges, routers, baseband preprocessing), and ASIC prototyping or replacement. It is also widely used in educational and development platforms such as the Altera DE2 board. When designing with the EP2C35U484C7N, plan a 6- to 8-layer PCB with controlled-impedance routing and a 1.2 V core supply capable of delivering the in-rush current demanded during configuration. This page synthesizes distributor pricing, drop-in package-equivalent variants, and practical design notes not found in the manufacturer datasheet alone.