LFE5UM-45F-6BG381I

The LFE5UM-45F-6BG381I is an ECP5-series FPGA from Lattice Semiconductor designed as a surface-mount, industrial-grade programmable logic device. It combines a mid-range logic fabric with embedded memory and flexible I/O to support custom digital functions, protocol bridging, and system integration in industrial applications.

This device provides a balance of logic capacity, on-chip RAM, and I/O density packaged in a compact 381-FBGA (381-CABGA, 17×17) footprint. Key engineering attributes include an extended operating temperature range and precise supply requirements for predictable deployment in controlled industrial environments.

Key Features

• Logic Capacity — 44,000 logic elements and 11,000 logic blocks provide programmable fabric for implementing combinational and sequential logic, state machines, and glue logic.
• Embedded Memory — Approximately 1.99 Mbits of on-chip RAM for FIFOs, LUT-based storage, and data buffering.
• I/O Density — 203 user I/O pins to support multiple parallel interfaces, peripheral connections, and board-level signals.
• Clocking and Timing — Integrated clocking architecture and PLL resources (documented in the ECP5 family data sheet) to support flexible clock distribution and frequency management.
• High-speed Serial and Memory Support — Family-level support for SERDES and DDR memory interfaces is documented in the ECP5 data sheet for designs that require serial links or external memory subsystems.
• Power Supply — Narrow core supply range (1.045 V to 1.155 V) for controlled power delivery and predictable device behavior.
• Package & Mounting — 381-FBGA (381-CABGA, 17×17) surface-mount package suitable for compact PCB layouts.
• Industrial Grade — Rated for an operating temperature range of −40 °C to 100 °C and RoHS compliant for environmental conformance.
• Configuration & System Features — Family data sheet documents device configuration options, on-chip oscillator, boundary-scan, and system-level features to aid board design and testability.

Typical Applications

• Industrial Control and Automation — Use the industrial temperature rating, I/O count, and programmable logic to implement custom control logic, protocol adaptation, and sensor aggregation.
• Communications and Connectivity — Leverage documented SERDES and DDR support for serial link handling, protocol conversion, and interface bridging between subsystems.
• Embedded System Glue Logic — Implement bus bridging, timing-critical glue logic, and peripheral interfaces where moderate logic density and on-chip RAM are required.

Unique Advantages

• Balanced Logic and Memory — 44,000 logic elements paired with approximately 1.99 Mbits of on-chip RAM enable mid-range designs without immediate need for external memory.
• High I/O Count — 203 I/O pins allow integration of multiple peripherals and parallel interfaces on a single device, reducing external components.
• Compact Package — 381-FBGA (17×17) package provides a small PCB footprint while maintaining significant I/O and routing capability.
• Industrial Temperature Range — Specified operation from −40 °C to 100 °C supports deployment in temperature-demanding industrial environments.
• Predictable Power Domain — Tight core voltage specification (1.045 V–1.155 V) supports controlled power design and supply planning.
• Documented System Features — The ECP5 family data sheet details clocking, SERDES, DDR support, configuration, and test features to accelerate system-level integration and bring-up.

Why Choose LFE5UM-45F-6BG381I?

The LFE5UM-45F-6BG381I positions itself as a versatile mid-range FPGA option within the ECP5 family, delivering a combination of logic capacity, embedded RAM, and high I/O count in an industrial-grade package. Its documented family-level features—such as flexible clocking, SERDES and DDR support, and configuration options—help reduce external components and simplify board-level design.

This device is well suited for engineers and procurement teams building industrial control, communications, and embedded-processing designs that require programmable logic, a compact footprint, and predictable thermal and power characteristics. The device’s family documentation supports system integration, configuration, and testing strategies for robust deployments.

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