LFE5U-45F-6BG381I

The LFE5U-45F-6BG381I is an ECP5 family FPGA in a 381-ball FBGA package designed for industrial-grade embedded logic applications. It delivers a balance of programmable logic capacity, on‑chip memory and flexible I/O for designs that require moderate density, deterministic temperature range and compact board footprint.

This device implements the ECP5 architecture and is supported by a comprehensive datasheet covering clocking, programmable I/O, memory and SERDES/PHY features for system-level integration and timing control.

Key Features

• Logic Capacity  Provides 44,000 logic elements to implement medium-density logic, state machines and control functions.
• Embedded Memory  Approximately 2.0 Mbits of on‑chip RAM for buffering, FIFOs and small memory structures without external DRAM.
• I/O Resources  203 user I/O pins to connect sensors, peripherals and external interfaces directly to the FPGA fabric.
• Package and Mounting  381-FBGA (supplier package: 381-CABGA, 17×17) in a surface-mount BGA format for compact board designs.
• Power  Core supply operating range from 1.045 V to 1.155 V to meet the device’s recommended operating voltage window.
• Industrial Temperature Grade  Specified to operate from −40 °C to 100 °C for deployment in industrial environments.
• Family-Level Capabilities (documented)  Datasheet content for the ECP5 family includes programmable I/O cells, DDR memory support, SERDES and PCS blocks, PLL-based clocking, sysDSP slices and other architecture-level features for system designers.
• Compliance  RoHS compliant for environmental and regulatory alignment.

Typical Applications

• Industrial Control  Use the industrial-grade temperature range and abundant I/O to implement machine control, sensor aggregation and deterministic I/O handling.
• Communications and Interfaces  Family-level SERDES and programmable I/O (as documented in the datasheet) support protocol bridging, transceiver interfacing and mid-range data plane functions.
• Embedded System Integration  On-chip RAM and 44,000 logic elements enable header control logic, peripheral aggregation, and protocol offload inside compact systems.
• Test & Measurement  High I/O count and reconfigurable logic make the device suitable for custom data acquisition front ends and real-time signal conditioning tasks.

Unique Advantages

• Mid-density programmable fabric: 44,000 logic elements provide the capacity needed for control, glue logic and moderate processing tasks without excessive board-level complexity.
• On-chip memory reduces external BOM: Approximately 2.0 Mbits of embedded RAM lowers the need for external memory in many buffering and small‑store use cases.
• High I/O flexibility: 203 I/O pins simplify direct connectivity to sensors, buses and peripherals, minimizing external IO expanders.
• Industrial-rated operation: −40 °C to 100 °C specification supports deployment in harsh environments where temperature tolerance is required.
• Compact BGA package: 381-FBGA (17×17) delivers a small PCB footprint while maintaining robust electrical and thermal characteristics for embedded designs.
• Documented architecture: The ECP5 family datasheet details clocking, memory, I/O and SERDES/PHY features to aid system-level design and verification.

Why Choose LFE5U-45F-6BG381I?

The LFE5U-45F-6BG381I positions itself as a practical mid-density FPGA option for industrial and embedded designs that require substantial logic, meaningful on-chip memory and a high count of user I/Os in a compact BGA package. Its documented ECP5 family capabilities—covering programmable I/O, memory modes, SERDES and clocking architecture—help engineers integrate timing, interface and buffering functions with predictable system behavior.

This device is well suited to teams that need a reliable, space-efficient FPGA with industrial temperature capability and a clear datasheet-backed architecture. It supports scalable designs where on‑chip resources reduce external components and simplify long-term product maintenance.

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