LFE2-35E-7F484C - 32K LUT ECP2 FPGA | Lattice Semiconductor
料号： LFE2-35E-7F484C ✓ 量产中LFE2-35E-7F484C 概述
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.
直接替换替代料： LFE2-35E-7F484C ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
LFE2-35E-7FN484C
✅ 直接替换📋 参考替代料（不在目录中）
LFE2-35E-6FN484C
✅ 直接替换📋 参考替代料（不在目录中）
LFE2-35SE-7F484C
✅ 直接替换📋 参考替代料（不在目录中）
LFE2-25E-7F484C
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LFE2-35E-7F484I
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LFE2-35E-7F484C 最大额定值与电气特性
| 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 |
| 安装类型 | Surface mount |
LFE2-35E-7F484C 484 pins 引脚配置指南
LFE2-35E-7F484C（484 pins 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： LFE2-35E-7F484C.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LFE2-35E-7F484C 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： LFE2-35E-7F484C ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Full headline-resource match with the -7 suffix alternative （对比 LFE2-35E-7FN484C)
- Higher speed designation than the -6 ECP2 candidate （对比 LFE2-35E-6FN484C)
- Higher logic density than the 25K-LUT family member （对比 LFE2-25E-7F484C)
设计说明
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.
合规信息
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.
