LFE2-20E-5F256C - 21K LUT ECP2 FPGA | Lattice Semiconductor
부품 번호: LFE2-20E-5F256C ✓ 활성LFE2-20E-5F256C 개요
An FPGA is a reconfigurable digital-logic semiconductor that belongs to the programmable-logic hierarchy: FPGA → field-programmable logic device → digital semiconductor. Unlike a fixed-function application-specific integrated circuit, an FPGA lets engineers configure parallel logic, state machines, interfaces, and signal-processing functions after manufacture. The ECP2 family therefore supports design adaptation without changing the physical IC, provided the required resources, interfaces, timing, and pin assignment are supported by the selected device.
The verified source data identifies 21,000 ECP2 logic cells, 21K LUTs, 193 I/O, and approximately 0.28 Mbit of on-chip RAM. The 256-ball fbBGA package supports compact, high-density PCB layouts, while the 90 nm CMOS process identifies the technology generation used for the device. A 1.2 V core supply is suitable for low-voltage embedded systems, and the -5 ordering code identifies the device’s specified speed grade.
The ECP2 architecture is appropriate when a design needs programmable logic resources rather than a fixed controller. Its 193 I/O provide substantial board-level connectivity for clocks, data buses, serial links, control signals, and external memory interfaces. The approximately 0.28 Mbit RAM adds on-chip storage for buffering, state retention, lookup structures, and small packet or frame-processing functions, reducing the need for external memory in suitable designs.
Typical uses include embedded control, industrial automation, communications interface bridging, data acquisition, general-purpose digital signal processing, and prototype systems that require reconfigurable hardware. The commercial grade and compact BGA package make the LFE2-20E-5F256C especially relevant to cost-sensitive embedded products that need more I/O and logic than a small microcontroller can provide.
Designers should verify the exact pinout, supported I/O standards, bank voltage constraints, clock requirements, and configuration method against the manufacturer documentation before layout release. Because this package contains 256 balls, PCB escape routing, via-in-pad considerations, soldering process, and assembly inspection require careful planning.
This page consolidates the verified distributor specifications, package information, a drop-in cross-reference assessment, and practical selection guidance. It also distinguishes documented parameters from details that still require confirmation in the manufacturer pinout and device documentation.
드롭인 대체품: LFE2-20E-5F256C — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
LFE2-20E-5FN256C
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LFE2-20E-5F256C 최대 정격 & 전기적 특성
| Device Type | ECP2 Field-Programmable Gate Array (FPGA) |
| FPGA Family | LatticeECP2 |
| Logic Cells | 21,000 cells |
| Look-Up Tables | 21K LUTs |
| User I/O | 193 I/O |
| On-Chip RAM | Approximately 0.28 Mbit |
| Core Supply Voltage | 1.2 V |
| Speed Grade | -5 |
| Process Technology | 90 nm CMOS |
| 패키지 | 256-ball fbBGA |
| Package Dimensions | 17 mm × 17 mm |
| Temperature Grade | Commercial grade |
| Product Category | Programmable logic device |
| Assembly Package Form | Tray |
LFE2-20E-5F256C tray 핀 구성 가이드
LFE2-20E-5F256C(tray 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: LFE2-20E-5F256C.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
LFE2-20E-5F256C 적합 용도: 6 애플리케이션s: Industrial Automation and Control, Communications Interface Bridging, Data Acquisition and Signal Conditioning, Reconfigurable Embedded Systems, Digital Signal Processing, Product Prototype and Logic Verification.
Industrial Automation and Control
The LFE2-20E-5F256C fits industrial control prototypes that combine parallel logic, multiple I/O, and on-chip data storage. Its 21K LUTs and 21,000 logic cells can implement multiple state machines, timing blocks, interlocks, and data-routing paths, while 193 user I/O provide connections for sensors, actuators, counters, field-bus transceivers, and status indicators. The approximately 0.28 Mbit of RAM can support short histories, acquisition buffers, or communication state storage. Because the verified ordering information identifies a commercial-grade part, deployed equipment with extended-temperature requirements must confirm qualification or select an appropriate grade before release.
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Communications Interface Bridging
The LFE2-20E-5F256C is suitable for protocol conversion and data-routing logic where parallel FPGA resources improve flexibility. Its 21K LUT capacity permits dedicated serialization, framing, buffering, and state-management logic, while 193 I/O can accommodate multiple data buses and control channels. The approximately 0.28 Mbit of on-chip RAM is useful for short packet queues or temporary word assembly. Designers should confirm the supported I/O standards, clocking architecture, and bank-voltage rules before assigning high-speed interfaces, because the verified distributor summary does not provide the complete electrical constraints of each I/O bank.
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Data Acquisition and Signal Conditioning
The LFE2-20E-5F256C can implement parallel acquisition pipelines, digital filters, counters, and timing functions when programmable throughput is important. The device provides 21K LUTs and 193 I/O, allowing several sensor channels, digital buses, trigger inputs, and status signals to be handled in one programmable device. Its approximately 0.28 Mbit of on-chip RAM can buffer sampled words and coordinate multi-stage processing without immediate external-memory use. The verified information identifies a 1.2 V core and 90 nm CMOS process, but engineers must check acquisition-clock specifications, supported I/O standards, and input timing directly from the manufacturer documentation.
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Reconfigurable Embedded Systems
The LFE2-20E-5F256C supports embedded prototypes that benefit from hardware reconfiguration after deployment. Its 21,000-cell ECP2 implementation provides substantially more parallel logic than a small microcontroller, while the 193 I/O offer connections for local buses, memory, displays, and communication peripherals. The approximately 0.28 Mbit RAM can hold lookup tables, command structures, or acquisition windows. Its 256-ball fbBGA package supports compact integration but demands careful escape routing and a qualified assembly process. Before committing to a board spin, engineers should verify configuration pins, clock requirements, programming scheme, and the complete package-ball map.
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Digital Signal Processing
The LFE2-20E-5F256C is appropriate for fixed or parallel signal-processing functions implemented as FPGA logic. The 21K LUT capacity can accommodate filters, correlators, waveform generators, and independent processing channels, while the approximately 0.28 Mbit of RAM provides local storage for samples, coefficients, or intermediate results. Its 193 user I/O gives designers access to multiple parallel data streams and control signals. The main engineering trade-off is that the 256-ball package and 1.2 V core require disciplined PCB design. Clock-frequency, multiplier, RAM, and I/O timing details should be obtained from the manufacturer documentation before implementing a timing-critical pipeline.
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Product Prototype and Logic Verification
The LFE2-20E-5F256C provides a practical platform for validating complex digital architectures before committing to a more specialized programmable device. Its 21K LUTs and 21,000 logic cells are sufficient for substantial control, datapath, and interface prototypes, while 193 I/O expose enough pins for external test equipment and companion converters. The approximately 0.28 Mbit RAM supports test vectors, trace buffers, and state inspection. Engineers should preserve the same logic partition and I/O standards between prototype and production designs, because changing device family can alter timing closure, configuration behavior, pin constraints, and bill-of-materials requirements.
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추천 제품 요약
엔지니어링 참조 데이터: LFE2-20E-5F256C — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LFE2-20E-5FN256C |
|---|---|---|
| Brand | Lattice Semiconductor | Lattice Semiconductor |
| Package | 256-ball fbBGA | 256-ball fbBGA - same package |
| FPGA Family | LatticeECP2 | LatticeECP2 |
| Logic Cells | 21,000 cells | 21,000 cells |
| Look-Up Tables | 21K LUTs | 21K LUTs |
| User I/O | 193 I/O | 193 I/O |
| Core Supply Voltage | 1.2 V | 1.2 V |
| Speed Designation | -5 | -5 |
주요 차별점
- High I/O density for embedded programmable logic (vs LFE2-20E-5FN256C)
- Substantial logic capacity in a compact package (vs LFE2-20E-5FN256C)
- On-chip storage for embedded data handling (vs LFE2-20E-5FN256C)
- Low-voltage 90 nm ECP2 implementation (vs LFE2-20E-5FN256C)
설계 노트
Treat the 256-ball fbBGA as a fine-pitch assembly constraint rather than simply another digital footprint. Use the exact manufacturer package drawing to establish pad dimensions, solder-mask and paste apertures, ball-one orientation, and escape routing. Avoid substituting a nominal 256-BGA library footprint without checking ball-pitch differences and exposed-pad requirements. The verified source confirms the package is 17 mm × 17 mm, but it does not provide the complete land pattern, so fabrication artwork must be checked against the latest Lattice package drawing.
Plan the 1.2 V core rail as a dedicated, low-impedance power branch and separate it from unrelated analog or digital switching loads where practical. The supplied results do not contain static-current, dynamic-current, I/O-bank, or configuration-power limits, so no numerical regulator or capacitor calculation is defensible. Before schematic release, obtain the manufacturer power tables, derive worst-case utilization from the actual design, and then size decoupling, the regulator, and copper thermal capacity using those verified values.
Assign banks by voltage and interface requirements before assigning FPGA pins, then route clocks and sensitive interfaces with controlled return paths. The verified information identifies 193 I/O but does not identify bank assignments or supported standards. Consult the manufacturer pinout and device documentation for permissible clock inputs, differential pairs, voltage limits, and configuration pins. Keep configuration access and recovery signals observable for production testing, and avoid routing critical high-speed paths through areas where a 256-ball escape strategy would create avoidable discontinuities.
Do not treat the LFE2-20E-5FN256C as an unconditional substitute merely because distributor summaries show the same LUT count, I/O count, voltage, and 256-BGA package. Confirm the exact package drawing, pin assignments, speed behavior, temperature range, configuration interface, and power requirements. FPGA compatibility is more restrictive than ordinary IC substitution because even a single repurposed configuration or power ball can prevent programming or alter I/O operation. Record any approved substitution against the original device’s official ordering and datasheet information.
규정 준수 정보
The supplied web results identify commercial grade but do not contain explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. These fields remain unknown rather than being inferred from the manufacturer name or package type.
