LFE2-35E-7F484C - 32K LUT ECP2 FPGA | Lattice Semiconductor
부품 번호: LFE2-35E-7F484C ✓ 활성LFE2-35E-7F484C 개요
An FPGA is a reconfigurable semiconductor in the programmable-logic hierarchy, positioned between fixed-function logic devices and higher-level programmable controllers. The ECP2 family combines LUT-based logic, programmable I/O, dedicated DSP blocks, embedded memory, and configuration resources in a single device. This makes an ECP2 FPGA useful when several control, interface, and signal-processing functions must share a compact, high-density implementation.
The LFE2-35E-7F484C provides 32,000 LUTs and 331 I/Os. Its -7 designation identifies the device speed grade, while the 1.2 V value is the core operating voltage used to characterize the ECP2 logic core. A 484-pin surface-mount FBGA provides a high pin count for parallel interfaces, external memory connections, clock distribution, and general peripheral routing. The device also includes DSP resources for filtering, arithmetic, and other fixed-point signal-processing tasks.
The 90 nm ECP2 process supports integration of programmable logic and DSP functions without relying on a separate processor for every control function. Designers can partition a design among serial or parallel interfaces, general-purpose logic, counters, state machines, and DSP pipelines. Configuration data determines the final interconnect and logic implementation, allowing design revisions and field updates when the selected programming flow supports in-system reconfiguration.
Typical uses include industrial automation, communications infrastructure, instrumentation, embedded control, video and image interfaces, audio processing, and general-purpose DSP modules. The high I/O count is particularly useful when a system must bridge multiple buses, memory interfaces, sensors, converters, or display controllers while retaining parallel programmable logic for control and protocol handling.
PCB design should account for the BGA escape routing, power distribution, decoupling, clock integrity, and configuration access. Use the manufacturer pin table and package drawing when assigning every ball, especially because the 484-pin FBGA offers no simple pin-by-pin visual confirmation on the board. Confirm the selected configuration interface, supported I/O standards, bank voltage constraints, and thermal conditions before releasing the PCB layout.
This product page combines the device specifications, application guidance, same-footprint alternatives, comparison data, and practical implementation notes needed to plan an ECP2 design. It also highlights engineering trade-offs involving logic density, speed grade, I/O capacity, package routing, and the availability of a suitable drop-in replacement.
드롭인 대체품: LFE2-35E-7F484C — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
LFE2-35E-7FN484C
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LFE2-35E-6FN484C
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LFE2-35SE-7F484C
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LFE2-25E-7F484C
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
LFE2-35E-7F484I
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
LFE2-35E-7F484C 최대 정격 & 전기적 특성
| Device Type | ECP2 Field-Programmable Gate Array (FPGA) |
| Logic Lookup Tables | 32,000 LUTs |
| Programmable Logic Cells | 32,000 cells |
| User I/O Count | 331 I/Os |
| Core Supply Voltage | 1.2 V |
| Speed Grade | -7 |
| FPGA Process Technology | 90 nm |
| DSP Support | Yes, dedicated DSP blocks |
| Package Type | 484-pin FBGA |
| Package Pin Count | 484 pins |
| 실장 유형 | Surface mount |
LFE2-35E-7F484C 484 pins 핀 구성 가이드
LFE2-35E-7F484C(484 pins 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: LFE2-35E-7F484C.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
LFE2-35E-7F484C 적합 용도: 6 애플리케이션s: Industrial Automation and Machine Control, Communications and Network Interface, Digital Instrumentation and Signal Conditioning, Video and Display Interface Control, Audio and General-Purpose DSP, Embedded Control and Peripheral Consolidation.
Industrial Automation and Machine Control
The LFE2-35E-7F484C fits industrial machine-control systems that combine sequential logic with many sensor and actuator connections. Its 32,000 LUTs can implement motion-state machines, interlocks, sequencing logic, communications protocols, and control datapaths, while 331 I/Os provide connections to encoders, sensors, drives, and discrete I/O. Dedicated DSP resources can accelerate filtering or arithmetic tasks without requiring a separate accelerator. The 484-pin FBGA supports dense routing across multiple buses and power domains, although careful ball-escape planning, decoupling, and signal-integrity review are essential for reliable industrial operation.
추천
Communications and Network Interface
The LFE2-35E-7F484C is appropriate for communications equipment requiring parallel packet handling, custom framing, and protocol conversion. The 32K-LUT resource level can support routing tables, packet classification, buffer management, and test logic, while 331 I/Os can connect parallel processors, memories, transceivers, and clock sources. Dedicated DSP blocks support filtering and fixed-point arithmetic that appears in packet pipelines and signal-conditioning paths. Designers should use the exact Lattice pin table to assign configuration pins, constrain clock inputs, and determine which I/O standards and voltage banks are usable in the selected architecture.
추천
Digital Instrumentation and Signal Conditioning
The LFE2-35E-7F484C can implement acquisition control, digital filtering, calibration, and data formatting in a compact instrumentation design. Its 32,000 LUTs provide capacity for control state machines, trigger logic, counters, and communication formatting, while the DSP blocks support multiply-accumulate operations commonly used in filters and numeric processing. With 331 I/Os, the device can connect converters, reference devices, memory, displays, and host interfaces. The design should explicitly budget I/O rates, clock-domain crossings, timing constraints, and DSP pipeline latency before committing resources to the final implementation.
추천
Video and Display Interface Control
The LFE2-35E-7F484C is suitable for display and imaging systems that need programmable timing, pixel-format conversion, control, and interface logic. The 32K-LUT capacity can host horizontal and vertical timing generators, data-alignment circuits, test-pattern generators, and control processors, while 331 I/Os allow parallel pixel, control, memory, and synchronization connections. DSP blocks can support selected arithmetic operations, although video performance still depends on external memory bandwidth and system timing. Layout planning should prioritize length matching, clean clock distribution, and controlled impedance on high-speed pixel interfaces.
추천
Audio and General-Purpose DSP
The LFE2-35E-7F484C supports audio and general DSP modules that combine sample-rate control, filter logic, buffering, and host communication. Its dedicated DSP blocks reduce pressure on LUT-based logic for multiply-accumulate operations, while the 32,000 LUTs remain available for control, address generation, and interface management. The 331 I/Os can connect audio converters, memory, clock sources, and digital control interfaces. Validate the selected device against required clock rates, DSP count, memory bandwidth, and latency; an external DSP such as the ADSP-1008AKD may be preferable when the workload exceeds the internal resources.
추천
Embedded Control and Peripheral Consolidation
The LFE2-35E-7F484C can consolidate timers, counters, protocol bridges, interrupt logic, and peripheral control into one programmable device. Its 32,000 LUTs provide room for multiple concurrent control tasks, and 331 I/Os allow direct attachment to external memories, sensors, transceivers, and mixed-signal components. Dedicated DSP resources add value when the control system also performs filtering or fixed-point arithmetic. Compared with a microcontroller-plus-discrete-logic architecture, an FPGA-based implementation can support parallel operations and adaptable I/O behavior, but designers must establish the configuration method, reset strategy, and deterministic boot behavior.
추천
추천 제품 요약
엔지니어링 참조 데이터: LFE2-35E-7F484C — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LFE2-35E-7FN484C | LFE2-35E-6FN484C | LFE2-35SE-7F484C | LFE2-25E-7F484C | LFE2-35E-7F484I |
|---|---|---|---|---|---|---|
| Package | 484-pin FBGA | 484-pin FBGA | 484-pin FBGA | 484-pin FBGA | 484-pin FBGA | 484-pin FBGA |
| Brand | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor |
| Speed Grade | -7 | -7 | -6 | -7 | -7 | -7 |
| Process Technology | 90 nm | 90 nm | 90 nm | 90 nm | 90 nm | 90 nm |
| Package Pin Count | 484 pins | 484 pins | 484 pins | 484 pins | 484 pins | 484 pins |
| Ordering Suffix | C | FN484C | 6FN484C | SE-7F484C | 25E-7F484C | I |
주요 차별점
- Full headline-resource match with the -7 suffix alternative (vs LFE2-35E-7FN484C)
- Higher speed designation than the -6 ECP2 candidate (vs LFE2-35E-6FN484C)
- Higher logic density than the 25K-LUT family member (vs LFE2-25E-7F484C)
설계 노트
Treat the 484-pin FBGA as a high-density routing problem. Establish ball-escape layers for power, ground, configuration, clocks, and high-speed interfaces before fixing the component placement. Follow the manufacturer package drawing for land patterns, solder-mask design, and assembly rules. Keep the clock inputs and configuration pins away from noisy switching nets, and provide local decoupling at every power ball according to the datasheet layout guidance.
Budget the 1.2 V core rail separately from every I/O and auxiliary supply because the FPGA can consume power dynamically across multiple domains. Use conservative regulator transient limits, verify startup sequencing against the configuration requirements, and include adequate bulk and high-frequency decoupling. Review power and thermal estimates from the final routed design, including the selected DSP activity and I/O switching, rather than relying only on the nominal core voltage.
Constrain all clock inputs and external interfaces according to the selected speed grade, and preserve controlled-impedance routing for high-frequency buses. Account for package and board skew in external memory or parallel data interfaces, and avoid unnecessary stubs during BGA escape routing. Validate the design with post-route timing analysis and board-level signal-integrity checks, especially when the 484-pin package carries both high-speed I/O and configuration signals.
Do not select a replacement solely because its package has 484 balls. Compare the complete ball map, power-up behavior, configuration interface, memory resources, DSP implementation, speed grade, and exact ordering suffix before accepting an LFE2-35E-7FN484C, LFE2-35E-6FN484C, LFE2-35SE-7F484C, LFE2-25E-7F484C, or LFE2-35E-7F484I as a substitution. In particular, the -6 device may reduce timing margin and the 25K-LUT device may not fit a design that uses close to 32,000 LUTs.
규정 준수 정보
The target is an ECP2 FPGA on a 90 nm process, but no explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration was identified in the product information. Confirm the status for the exact ordering code with the manufacturer.
