LFE5U-85F-8BG554C

The LFE5U-85F-8BG554C is a commercial-grade FPGA from the Lattice Semiconductor ECP5 family. This surface-mount 554‑FBGA device provides a programmable fabric with 84,000 logic elements, approximately 3.83 Mbits of embedded RAM, and 259 user I/Os for mid-density, I/O‑rich designs.

Built to the ECP5 family architecture described in the Lattice datasheet, the device supports on‑chip resources such as DSP slices, SERDES and physical coding sublayers, programmable I/O cells, and a flexible clocking structure to address connectivity, memory interface and signal-processing tasks.

Key Features

• Logic Capacity — 84,000 logic elements (LEs) to implement medium-complexity programmable logic and glue‑logic functions.
• Embedded Memory — Approximately 3.83 Mbits of total on‑chip RAM for buffering, FIFOs and small memory cores.
• I/O Density — 259 user I/O pins to support broad peripheral and interface connectivity.
• Family Architecture — ECP5 family architecture elements referenced in the datasheet, including sysDSP slices, SERDES and PCS blocks, programmable I/O cells, and DDR memory support.
• Clocking and Timing — Family-level clocking features such as PLLs and a distributed clock network are documented in the ECP5 datasheet to support diverse clocking topologies.
• Package & Mounting — 554‑FBGA package (supplier device package: 554‑CABGA, 23 × 23 mm) in a surface‑mount form factor for compact board implementations.
• Power and Voltage — Core supply voltage range of 1.045 V to 1.155 V for the device core rails.
• Commercial Temperature Grade — Rated for 0 °C to 85 °C operating temperature suitable for commercial applications.
• RoHS Compliant — Device is compliant with RoHS environmental requirements.

Typical Applications

• High‑speed serial links — Designs leveraging the SERDES and PCS blocks described in the ECP5 family for protocol bridging and serial communications.
• DDR memory interfaces — Systems that implement DDR memory controllers using the ECP5 family DDR support and calibrated DQS features.
• Signal processing and DSP — Applications using on‑chip sysDSP slices for arithmetic and streaming data processing.
• I/O‑centric glue logic — Boards requiring substantial I/O count and flexible programmable I/O cells for protocol translation and control logic.

Unique Advantages

• Balanced logic and memory — 84,000 logic elements combined with ~3.83 Mbits of RAM supports integrated logic plus local buffering without external memory for many mid‑range designs.
• High I/O count — 259 I/Os enable direct interfacing to a wide array of peripherals and interfaces, reducing the need for external multiplexing.
• Family‑level feature set — Access to ECP5 architecture capabilities such as SERDES, PLLs, programmable I/O cells and DDR support for consistent design reuse across the family.
• Compact system footprint — 554‑FBGA (23 × 23 mm) package offers a high‑density solution suitable for space‑constrained PCBs.
• Commercial operating range — 0 °C to 85 °C rating aligns with standard commercial deployments and typical electronics product environments.
• RoHS compliant — Meets common environmental compliance requirements for modern electronics manufacturing.

Why Choose LFE5U-85F-8BG554C?

LFE5U-85F-8BG554C delivers a practical blend of logic capacity, embedded memory and high I/O density within the Lattice ECP5 family architecture. It is positioned for designers who need a mid-density FPGA with on‑chip DSP, SERDES and DDR memory support documented in the ECP5 datasheet, packaged in a compact 554‑FBGA footprint.

This part is suited for commercial applications that require flexible I/O, moderate logic resources and integrated memory. As a member of the ECP5 family, it aligns with the architectural elements and configuration options described in the family datasheet, enabling reuse of design approaches across similar devices.

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