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LFE5UM5G-45F-8BG381I

LFE5UM5G-45F-8BG381I

Lattice Semiconductor Corporation
Lower-capacity ECP5 option for designs that need similar I/O and package but fewer logic resources
82 in stock
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Overview

The LFE5UM5G-45F-8BG381I is a Lattice ECP5 family FPGA offering a lower-capacity option in the ECP5 lineup. It provides programmable fabric and I/O in the same package/I/O footprint as larger ECP5 devices, intended for designs that need the same board-level compatibility but fewer logic resources. Use cases include glue logic, deterministic I/O handling, and protocol bridging where a full-size FPGA is unnecessary.

Why Choose This Part

Choose this part when you need the ECP5 family I/O count and package compatibility but can save cost, power, and routing complexity by using fewer logic resources. It lets you reuse a board design intended for larger ECP5 devices while tailoring the FPGA capacity to the application. The ECP5 ecosystem also offers both vendor tools and community-supported open-source flows for development.

Applications

I/O bridging and protocol conversion
Implement deterministic serial-to-parallel interfaces, protocol translators, or custom peripheral adapters where board-level I/O compatibility is required.
Sensor and actuator preprocessing for robotics
Perform low-latency preprocessing, filtering, and aggregation of sensor data before passing results to a microcontroller or SoC.
Industrial gateway and fieldbus interface
Act as a compact FPGA for timing-critical industrial communication tasks, offloading real-time processing from the host CPU.
SoC glue logic and prototype validation
Provide custom logic, bus bridges, and early silicon validation while preserving the same PCB footprint as larger ECP5 parts for easy migration.

Getting Started

Use Lattice documentation and ECP5-compatible development kits or community boards (for example, ULX3S and other ECP5-based boards) to get started. Development can be done with Lattice vendor tools for ECP5 devices and with the open-source flow based on Project Trellis + yosys + nextpnr for people who prefer an open toolchain. Ensure you have a compatible JTAG programmer and review power sequencing, I/O voltage banks, and recommended decoupling from the datasheet before hardware bring-up.

Also Consider

LFE5UM5G-85F-8BG381I Lattice Semiconductor - Higher-capacity ECP5 in the same package when you need more logic while preserving board compatibility.
LFE5UM5G-45F-8BG381C Lattice Semiconductor - Alternate speed/grade or revision in the same logic/capacity class for different temperature or lifecycle requirements.
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