LFE5UM-45F-8BG381C

The LFE5UM-45F-8BG381C is a commercial‑grade ECP5 family Field Programmable Gate Array (FPGA) IC from Lattice Semiconductor. It integrates approximately 44,000 logic elements and roughly 1.99 Mbits of embedded RAM to support mid‑density programmable logic tasks.

With 203 user I/O pins, support for programmable I/O features, SERDES and DDR memory blocks described in the ECP5 family datasheet, and a compact 381‑FBGA (381‑CABGA, 17×17) package, this device is targeted at designs that require flexible I/O, on‑chip memory and configurable clocking within a commercial temperature range.

Key Features

• Core Capacity  Approximately 44,000 logic elements for implementing combinational and sequential logic, state machines and mid‑level FPGA functions.
• Embedded Memory  Approximately 1.99 Mbits of on‑chip RAM for FIFOs, buffers and small storage blocks; supports single, dual and pseudo‑dual port modes as described for the ECP5 family.
• I/O Resources  203 user I/O pins in a surface‑mount 381‑FBGA package, with programmable I/O cell architecture and on‑chip I/O buffer features referenced in the family datasheet.
• High‑Speed Interfaces  Device family documentation includes SERDES and PCS blocks and DDR memory support for high‑speed serial links and external memory interfacing.
• Clocking and Timing  Includes sysCLOCK PLL and a flexible clock distribution network as part of the ECP5 family architecture for configurable clocking schemes.
• Power and Supply  Operates with a core supply range of 1.045 V to 1.155 V, enabling predictable core power budgeting in system designs.
• Package & Mounting  381‑FBGA (supplier package 381‑CABGA, 17×17) surface‑mount package for compact board integration.
• Commercial Grade & Compliance  Commercial operating grade with RoHS compliant status; rated for 0 °C to 85 °C operation.

Typical Applications

• Interface Aggregation  I/O‑rich systems that require flexible protocol bridging or aggregation using the device’s programmable I/O and SERDES/DDR support.
• Embedded Logic and Control  Mid‑density FPGA implementations such as protocol handling, control logic and peripheral management using the device’s logic elements and embedded RAM.
• Memory Interface Prototyping  Designs that require on‑chip RAM and DDR memory support for buffering and memory controller development.
• High‑Speed Serial Links  Applications leveraging the documented SERDES and physical coding sublayer blocks for serial connectivity tasks.

Unique Advantages

• Balanced Logic and Memory:  Approximately 44,000 logic elements paired with ~1.99 Mbits of embedded RAM provide a balanced resource set for mid‑density designs without external FPGA components.
• I/O Density in a Compact Package:  203 user I/Os in a 17×17 381‑FBGA enable high pin‑count designs in a compact footprint to save PCB area.
• Flexible Clocking and Interfaces:  Family‑level support for sysCLOCK PLLs, clock distribution, DDR and SERDES documented in the ECP5 datasheet supports a range of timing and interface topologies.
• Predictable Power Envelope:  A defined core voltage range (1.045 V – 1.155 V) simplifies power supply design and thermal planning for commercial systems.
• Commercial‑Grade Reliability:  Rated for 0 °C to 85 °C operation and RoHS compliant for standard commercial deployments.

Why Choose LFE5UM-45F-8BG381C?

The LFE5UM-45F-8BG381C delivers a practical combination of logic capacity, on‑chip memory and I/O density in a compact 381‑FBGA package suitable for commercial embedded applications. Its inclusion in the ECP5 family provides access to documented features such as programmable I/O cells, flexible clocking (sysCLOCK PLL), DDR memory support and SERDES/PCS blocks to address interface‑centric designs.

This device is well suited for engineering teams building mid‑density programmable logic solutions that require a balance of resources, compact package integration and predictable operating conditions. The ECP5 family documentation included with the part supports system design, clocking and I/O considerations for reliable deployment in commercial environments.

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