LFE5UM-45F-7BG381C

The LFE5UM-45F-7BG381C is a Field Programmable Gate Array (FPGA) IC from the Lattice Semiconductor ECP5 family, delivered in a 381‑FBGA (381‑CABGA, 17×17) package for surface-mount board designs. It combines a high logic capacity with embedded RAM and a broad I/O count to address reprogrammable digital logic, memory interfacing, and serial link applications.

On-chip architecture and feature areas described in the ECP5 family datasheet include programmable I/O, clocking and PLL structures, DDR memory support, sysDSP slices and SERDES/physical coding sublayer blocks, enabling flexible implementations where custom logic, memory and high-speed interfaces are required.

Key Features

• Logic Capacity  Approximately 44,000 logic elements suitable for complex logic, glue logic and mid-size FPGA functions.
• Embedded Memory  Approximately 1.99 Mbits of on-chip RAM to support buffers, FIFOs and small on-chip data stores.
• I/O Resources  203 user I/O pins, enabling multiple external interfaces and parallel connections on a single device.
• Package & Mounting  381‑FBGA (supplier package: 381‑CABGA, 17×17), surface-mount mounting for compact board-level integration.
• Power Supply  Core voltage supply range specified as 1.045 V to 1.155 V, supporting consistent power delivery and system design.
• Operating Range & Grade  Commercial grade device with an operating temperature range of 0 °C to 85 °C.
• Family-Level Capabilities  ECP5 family documentation references architecture elements such as programmable I/O cells, clocking (sysCLOCK PLL), DDR memory support, sysDSP slices, SERDES and a physical coding sublayer—features intended to support serial links, memory interfaces and DSP-style datapaths.
• Compliance  RoHS compliant.

Typical Applications

• High-speed serial interfaces  Use the device’s SERDES and physical coding sublayer capabilities to implement protocol bridges, multiplexing and serial link endpoints.
• Memory interface and buffering  DDR memory support and on-chip RAM make the device suitable for memory controller logic, buffering and data staging between subsystems.
• Signal processing and acceleration  sysDSP slice resources allow implementation of DSP-oriented datapaths, filters and accelerators within embedded systems.
• Embedded control and glue logic  Large I/O count and significant logic capacity enable integration of control logic, peripheral interfaces and custom timing/control blocks on a single FPGA.

Unique Advantages

• Significant logic density: Approximately 44,000 logic elements provide the capacity to consolidate multiple discrete functions into one FPGA, reducing board complexity.
• Integrated on-chip memory: Nearly 2 Mbits of embedded RAM supports local buffering and state storage without immediate external memory dependence.
• Generous I/O accessibility: 203 I/Os enable broad connectivity options for peripherals, sensors, memory buses and external interfaces.
• Compact, board-ready package: 381‑FBGA (17×17) surface-mount package helps achieve a small PCB footprint while maintaining high I/O count.
• Configurable clocking and SERDES support: Family-level clocking blocks, PLLs and SERDES/PCS elements described in the datasheet simplify implementation of high-speed and timing-critical designs.
• Regulatory friendliness: RoHS compliance supports deployment in modern electronics production environments.

Why Choose LFE5UM-45F-7BG381C?

The LFE5UM-45F-7BG381C offers a balanced combination of logic capacity, embedded memory and I/O density in a compact 381‑FBGA footprint, making it suitable for designs that require mid-size programmable logic with on-chip RAM and extensive external connectivity. Its commercial-grade operating range and defined core voltage window support predictable integration into system power and thermal envelopes.

With architecture elements documented across the ECP5 family for programmable I/O, DDR memory support, DSP slices, SERDES and clocking, this device is positioned for customers implementing serial interfaces, memory controllers, signal processing blocks or consolidated control logic who value a programmable, reconfigurable hardware building block backed by Lattice’s family-level documentation.

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